. Chillers. R-407C. EUWY-KAZW 6. Applied Systems. Chillers 1 1 AReEeACK i l7 - l l0Y piW4 phU-C1Features. Optimised for use with R-407C. Daikin scroll compressor. Reduced installation time thanks to integrated pump and/or buffer tank.
For devices: | Daikin EUWA5KAZW1and 3 more |
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Languages: | English |
Manual type: | Service Manual |
Pages: | 215 |
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ESiE04-03
iii
4
1
The Digital Controller
What Is in This Chapter?
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2.2
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2.3
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2.4
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2.5
....................................................
2.6
Reading or Adjusting Parameter Settings: the Programming
2–33
Troubleshooting
Inputs and Outputs Overview
What Is in This Chapter?
........................................................................
1.2
EUWY*5-24KAZW1
................................................................................
1.3
Inputs/outputs overview of the I/O PCB: EUWA*5-24KAZW1 and
................................................................................
2
2.1
........................................................................
2.2
Malfunction Indications Overview: EUWA*5-24KAZW1 and
................................................................................
2.3
Safeties Overview: EUWA*5-24KAZW1 and EUWY*5-24KAZW1
3–10
Checking the Inputs and Outputs
What Is in This Chapter?
........................................................................
3.2
.......................................................
3.3
I/O PCB sensors: R3T and R4T for EUWA*5-24KAZW1 and
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3.4
I/O PCB sensors: R6T, R7T and R8T for EUWA*5-24KAZW1 and
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3.5
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3.6
Checking the Power Supply and Fuses: EUWA*5-24KAZW1 and
................................................................................
3.7
Electrical Error Overview: EUWA*5-24KAZW1 and EUWY*5-24KAZW1
ESiE04-03 Daikin Europe N.V. is approved by LRQA for its Quality Daikin units comply with the European regulations that Service Manual / Small air-cooled chillers and heat pump ESiE04-03 Service Manual Management System in accordance with the ISO9001 guarantee the safety of the product. standard. ISO9001 pertains to quality assurance EUWA*5-24KAZW1 R-407C regarding design, development, manufacturing as well Daikin Europe N.V. participates in the Eurovent EUWY*5-24KAZW1 R-407C as to services related to the product. Certification Programme for Air Conditioners (AC), Small air-cooled chillers and heat pump Liquid Chilling Packages (LCP) and Fan Coil Units (FC); ISO14001 assures an effective environmental the certified data of certified models are listed in the management system in order to help protect human Eurovent Directory. health and the environment from the potential impact of our activities, products and services and to assist in maintaining and improving the quality of the environment. Specifications are subject to change without prior noticeZandvoordestraat 300 ESiE04-03 • 06/2005B-8400 Ostend - Belgium Prepared in Belgium by Lannoowww.daikineurope.com ESiE04-03Service ManualEUWA*5-24KAZW1 R-407CEUWY*5-24KAZW1 R-407CSmall air-cooled chillers and heat pumpESiE04-03 Table of Contents 11 Introduction 1.1 About This Manual .................................................................................. i–viiPart 1System Outline 31 General Outline 1.1 What Is in This Chapter? ........................................................................ 1–3 1.2 Technical Specifications: EUWA*5-8KAZW1.......................................... 1–5 4 1.3 Technical Specifications: EUWA*10-12KAZW1...................................... 1–8 1.4 Technical Specifications: EUWA*16-20KAZW1...................................... 1–11 1.5 Technical Specifications: EUWA*24KAZW1 ........................................... 1–14 1.6 Technical Specifications: EUWY*5-8KAZW1.......................................... 1–17 1.7 Technical Specifications: EUWY*10-12KAZW1...................................... 1–20 1.8 Technical Specifications: EUWY*16-20KAZW1...................................... 1–23 1.9 Technical Specifications: EUWY*24KAZW1 ........................................... 1–26 5 1.10 Correction factors for glycol .................................................................... 1–29 1.11 Electrical Specifications: EUWA*5-8KAZW1........................................... 1–31 1.12 Electrical Specifications: EUWA*10-12KAZW1....................................... 1–33 1.13 Electrical Specifications: EUWA*16-20KAZW1....................................... 1–35 1.14 Electrical Specifications: EUWA*24KAZW1............................................ 1–37 1.15 Electrical Specifications: EUWY*5-8KAZW1........................................... 1–39 1.16 Electrical Specifications: EUWY*10-12KAZW1....................................... 1–41 1.17 Electrical Specifications: EUWY*16-20KAZW1....................................... 1–43 1.18 Electrical Specifications: EUWY*24KAZW1............................................ 1–45 1.19 Outlook Drawing: EUWAN5-8KAZW1/EUWYN5-8KAZW1..................... 1–47 1.20 Outlook Drawing: EUWAP5-8KAZW1/EUWYP5-8KAZW1 ..................... 1–48 1.21 Outlook Drawing: EUWAB5-8KAZW1/EUWYB5-8KAZW1 ..................... 1–49 1.22 Outlook Drawing: EUWAN10-12KAZW1/EUWYN10-12KAZW1............. 1–50 1.23 Outlook Drawing: EUWAP10-12KAZW1/EUWYP10-12KAZW1 ............. 1–51 1.24 Outlook Drawing: EUWAB10-12KAZW1/EUWYB10-12KAZW1 ............. 1–53 1.25 Outlook Drawing: EUWAN16KAZW1/EUWYN16KAZW1 ....................... 1–55 1.26 Outlook Drawing: EUWAP16KAZW1/EUWYP16KAZW1 ....................... 1–56 1.27 Outlook Drawing: EUWAB16KAZW1/EUWAB16KAZW1 ....................... 1–57 1.28 Outlook Drawing: EUWAN20-24KAZW1/EUWYN20-24KAZW1............. 1–58 1.29 Outlook Drawing: EUWAP20-24KAZW1/EUWYP20-24KAZW1 ............. 1–59 1.30 Outlook Drawing: EUWAB20-24KAZW1/EUWYB20-24KAZW1 ............. 1–612 Piping Layout 2.1 What Is in This Chapter? ........................................................................ 1–63 2.2 Installation outline ................................................................................... 1–64 2.3 Functional Diagram Refrigeration Circuit: EUWA*5-24KAZW1 .............. 1–65 2.4 Functional Diagram Refrigeration Circuit: EUWY*5-24KAZW1 .............. 1–68Table of Contents i ESiE04-03 3 Wiring Layout1 3.1 3.2 3.3 What Is in This Chapter? ......................................................................... 1–71 3.4 Main Functions of the EUWA*5-24KAZW1 and EUWY*5-24KAZW1 ...... 1–72 3.5 Switch Box Layout: EUWA*5-24KAZW1 and EUWY*5-24KAZW1.......... 1–73 PCB Layout of the EUWA*5-24KAZW1 and EUWY*5-24KAZW1 ........... 1–75 Wiring Diagram: EUWA*5-24KAZW1 and EUWY*5-24KAZW1............... 1–79 Part 2 Functional Description3 1 Functional Description 1.1 What Is in This Chapter? ......................................................................... 2–34 1.2 Operational Range: EUWA*5-24KAZW1 ................................................. 2–4 1.3 Operational Range: EUWY*5-24KAZW1 ................................................. 2–5 1.4 Operational Flow Chart ............................................................................ 2–7 1.5 Compressor Working Status .................................................................... 2–8 1.6 Compressor Timers ................................................................................. 2–9 1.7 Thermostat Control: EUWA*5-24KAZW1 and EUWY*5-24KAZW1......... 2–10 1.8 Head Pressure Control: EUWA*5-24KAZW1 and EUWY*5-24KAZW1... 2–115 1.9 Fan Working: EUWA*5-24KAZW1 and EUWY*5-24KAZW1 ................... 2–13 1.10 Crankcase Heater .................................................................................... 2–14 1.11 Evaporator Heater Tape Management: EUWA*5-24KAZW1 and EUWY*5-24KAZW1 ................................................................................. 2–15 1.12 Pump Steering ......................................................................................... 2–16 1.13 Freeze-up Control: EUWA*5-24KAZW1 and EUWY*5-24KAZW1 .......... 2–17 1.14 Defrost Management for EUWY*5-24KAZW1 ......................................... 2–18 ii Table of ContentsESiE04-032 The Digital Controller 1 2.1 What Is in This Chapter? ........................................................................ 2–25 2.2 The Digital Controller .............................................................................. 2–26 2.3 Start/Stop ................................................................................................ 2–28 2.4 What Happens in Case of an Alarm or a Warning .................................. 2–30 2.5 Settings: Direct and User Parameters .................................................... 2–31 2.6 Reading or Adjusting Parameter Settings: the Programming Procedure 2–33Part 3Troubleshooting 31 Inputs and Outputs Overview 1.1 What Is in This Chapter? ........................................................................ 3–3 4 1.2 Inputs and Outputs Overview: EUWA*5-24KAZW1 and EUWY*5-24KAZW1 ................................................................................ 3–4 1.3 Inputs/outputs overview of the I/O PCB: EUWA*5-24KAZW1 and EUWY*5-24KAZW1 ................................................................................ 3–52 Malfunction Indications and Safeties Overview 5 2.1 What Is in This Chapter? ........................................................................ 3–7 2.2 Malfunction Indications Overview: EUWA*5-24KAZW1 and EUWY*5-24KAZW1 ................................................................................ 3–8 2.3 Safeties Overview: EUWA*5-24KAZW1 and EUWY*5-24KAZW1.......... 3–103 Checking the Inputs and Outputs 3.1 What Is in This Chapter? ........................................................................ 3–13 3.2 Checking the Temperature Sensors ....................................................... 3–14 3.3 I/O PCB sensors: R3T and R4T for EUWA*5-24KAZW1 and EUWY*5-24KAZW1 ................................................................................ 3–15 3.4 I/O PCB sensors: R6T, R7T and R8T for EUWA*5-24KAZW1 and EUWY*5-24KAZW1 ................................................................................ 3–16 3.5 Checking the Digital Inputs and Outputs................................................. 3–17 3.6 Checking the Power Supply and Fuses: EUWA*5-24KAZW1 and EUWY*5-24KAZW1 ................................................................................ 3–18 3.7 Electrical Error Overview: EUWA*5-24KAZW1 and EUWY*5-24KAZW1 3–19Table of Contents iii ESiE04-03 4 Troubleshooting1 4.1 4.2 4.3 What Is in This Chapter? ......................................................................... 3–23 4.4 Items to Be Checked ............................................................................... 3–24 4.5 General Repair Procedures ..................................................................... 3–26 4.6 Unlocking the Keyboard........................................................................... 3–27 4.7 Replacing the Controller: EUWA*5-24KAZW1......................................... 3–28 4.8 Replacing the Controller: EUWY*5-24KAZW1......................................... 3–33 Replacing the PCB: EUWA*5-24KAZW1 and EUWY*5-24KAZW1 ......... 3–39 Soft Starter (option EKSS) Thermal Protection........................................ 3–403 Part 4 Commissioning and Test Run 1 Pre-Test Run Checks4 1.1 What Is in This Chapter? ......................................................................... 4–35 1.2 General Checks ....................................................................................... 4–4 1.3 Water Piping Checks ............................................................................... 4–5 1.4 External Static Pressure: EUWA*5-12KAZW1......................................... 4–8 1.5 External Static Pressure: EUWA*16-24KAZW1....................................... 4–10 1.6 External Static Pressure: EUWY*5-12KAZW1......................................... 4–12 1.7 External Static Pressure: EUWY*16-24KAZW1....................................... 4–14 1.8 Static Pressure of the Pump for EUWA*5-24KAZW1 and EUWY*5-24KAZW1 ................................................................................. 4–16 1.9 Water Pressure Drop through Evaporator: EUWA*5-12KAZW1.............. 4–18 1.10 Water Pressure Drop through Evaporator: EUWA*16-24KAZW1............ 4–20 1.11 Water Pressure Drop through Evaporator: EUWY*5-12KAZW1.............. 4–22 1.12 Water Pressure Drop through Evaporator: EUWY*16-24KAZW1............ 4–24 1.13 Electrical Checks ..................................................................................... 4–26 1.14 Control of the function of the 4-way valve for EUWY*5-24KAZW1.......... 4–27 iv Table of ContentsESiE04-032 Test Run and Operation Data 1 2.1 What Is in This Chapter? ........................................................................ 4–33 2.2 Test Run and Operation Data for EUWA*5-24KAZW1 and EUWY*5-24KAZW1 ................................................................................ 4–34Part 5Maintenance1 Maintenance 3 1.1 What Is in This Chapter .......................................................................... 5–3 1.2 Maintenance of the Main Parts ............................................................... 5–4 1.3 Maintenance of the Control Devices ....................................................... 5–6 1.4 Periodical Checks ................................................................................... 5–7 4 5Table of Contents v1 ESiE04-033 Table of Contents45 viESiE04-03 Introduction1 Introduction Part 01.1 About This ManualTarget group This service manual is intended for and should only be used by qualified engineers.Purpose of this This service manual contains all the information you need to carry out the necessary repair and 3manual maintenance tasks for the EUWA*5-24KAZW1 and EUWY*5-24KAZW1.EUWA*5-24KAZW1 The Daikin EUWA*5-24KAZW1 air-cooled water chillers: ■ Are designed for outdoor installation. 4 ■ Are used for cooling applications. ■ Are available in seven standard sizes with nominal cooling capacities ranging from 11.3 kW to 55.3 kW. ■ have three types of units: EUWAN5-24KAZW1 = without hydraulic module, naked model EUWAP5-24KAZW1 = with hydraulic module: pump and expansion vessel 5 EUWAB5-24KAZW1 = with hydraulic module: buffer tank, pump and expansion vessel.EUWY*5-24KAZW1 The Daikin EUWY*5-24KAZW1 heat pump water chillers: ■ Are designed for outdoor installation. ■ Are used for cooling and heating applications. ■ Are available in seven standard sizes with nominal cooling capacities ranging from 9.1 kW to 50 kW and heating from 11.9 kW to 54 kW. ■ have three types of units: EUWYN5-24KAZW1 = without hydraulic module, naked model EUWYP5-24KAZW1 = with hydraulic module: pump and expansion vessel EUWYB5-24KAZW1 = with hydraulic module: buffer tank, pump and expansion vessel.Before starting up Before starting up the unit for the first time, make sure it has been properly installed. See 'Pre-Testthe unit Run Checks' on page 4–3. vii Introduction ESiE04-031345 viiiESIE04-03 14 Part 1 System OutlineIntroduction This part contains an outline of all the relevant elements in the EUWA*5-24KAZW1 and 3 EUWY*5-24KAZW1 installation.What is in this part? This part contains the following chapters: See page Chapter 1–General Outline 4 2–Piping Layout 3–Wiring Layout 1–3 1–63 1–71 5Part 1 – System Outline 1–111 ESIE04-033 Part 1 – System Outline5 1–2ESiE04-03 General Outline1 General Outline Part 1 11.1 What Is in This Chapter?Introduction This chapter contains the following information: 3Overview ■ Technical specifications ■ Electrical specifications 4 ■ Installation outline of a typical installation ■ Outlook drawings: Outlook, dimensions, installation and service space. See page This chapter contains the following topics: 1–5 Topic 1.2–Technical Specifications: EUWA*5-8KAZW1 1–8 1.3–Technical Specifications: EUWA*10-12KAZW1 1.4–Technical Specifications: EUWA*16-20KAZW1 1–11 5 1.5–Technical Specifications: EUWA*24KAZW1 1.6–Technical Specifications: EUWY*5-8KAZW1 1–14 1.7–Technical Specifications: EUWY*10-12KAZW1 1.8–Technical Specifications: EUWY*16-20KAZW1 1–17 1.9–Technical Specifications: EUWY*24KAZW1 1.10–Correction factors for glycol 1–20 1.11–Electrical Specifications: EUWA*5-8KAZW1 1.12–Electrical Specifications: EUWA*10-12KAZW1 1–23 1.13–Electrical Specifications: EUWA*16-20KAZW1 1.14–Electrical Specifications: EUWA*24KAZW1 1–26 1.15–Electrical Specifications: EUWY*5-8KAZW1 1–29 1.16–Electrical Specifications: EUWY*10-12KAZW1 1–31 1.17–Electrical Specifications: EUWY*16-20KAZW1 1–33 1.18–Electrical Specifications: EUWY*24KAZW1 1–35 1.19–Outlook Drawing: EUWAN5-8KAZW1/EUWYN5-8KAZW1 1.20–Outlook Drawing: EUWAP5-8KAZW1/EUWYP5-8KAZW1 1–37 1.21–Outlook Drawing: EUWAB5-8KAZW1/EUWYB5-8KAZW1 1–39 1.22–Outlook Drawing: EUWAN10-12KAZW1/EUWYN10-12KAZW1 1–41 1–43 1–45 1–47 1–48 1–49 1–50Part 1 – System Outline 1–3 General Outline ESiE04-0311 Topic See page3 1.23–Outlook Drawing: EUWAP10-12KAZW1/EUWYP10-12KAZW1 1–51 1.24–Outlook Drawing: EUWAB10-12KAZW1/EUWYB10-12KAZW1 1–53 1.25–Outlook Drawing: EUWAN16KAZW1/EUWYN16KAZW1 1–55 1.26–Outlook Drawing: EUWAP16KAZW1/EUWYP16KAZW1 1–56 1.27–Outlook Drawing: EUWAB16KAZW1/EUWAB16KAZW1 1–57 1.28–Outlook Drawing: EUWAN20-24KAZW1/EUWYN20-24KAZW1 1–58 1.29–Outlook Drawing: EUWAP20-24KAZW1/EUWYP20-24KAZW1 1–59 1.30–Outlook Drawing: EUWAB20-24KAZW1/EUWYB20-24KAZW1 1–6145 1–4 Part 1 – System OutlineESiE04-03 General Outline1.2 Technical Specifications: EUWA*5-8KAZW1 1Technical The table below contains the technical specifications. 3specifications 4 5Model EUWAN5KAZW1 EUWAP5KAZW1 EUWAB5KAZW1 EUWAN8KAZW1 EUWAP8KAZW1 EUWAB8KAZW1Nominal cooling 4.52 kW 11.3 kW 7.38 kW 17.9 kWcapacity 4.64 kW 7.39 kWNominal inputCapacity steps 0-100% 0-100%Compressor Hermetically sealed scroll Hermetically sealed scrollType 2900 rpm 2900 rpmSpeed 33 W 50 WCrankcase heaterNo. x model (W1) 1 x JT140BF-YE 1 x JT212DA-YEEvaporatorType Brased plate-heat exchanger Brased plate-heat exchangerNo. x model 1 x AC50-24HX 1 x AC50-34HXMin.water volume 54 l 85 lin the system (1)Water flow rate Min.: 16 l/min Min.: 26 l/min Max.: 65 l/min Max.: 102 l/minNominal water flowNom. water 32 l/min 51 l/minpressure drop 24 kPa 38 kPaInsulation materialCondenser ClimaflexTypeRows x stages x fin Cross fin coil Hi-X tubes and PE coated waffle louvre finspitch 2 x 40 x 2.0 mmFace areaNominal air flow 160 m³/min 1.570 m² 170 m³/minDischarge 2 x 140 kW 1 x 190 kW and 1 x 230 kWFan type VerticalNo. of fans Direct driveNo. of motors xoutput 2Piping connectionsEvap. water FBSP 1-1/4” FBSP 1-1/4”in/outletRefrigerant circuit 3.9 kg R-407C 4.6 kgRefrigerant type 1.5 l 2.7 lRefrigerant charge Thermostatic expansion valveRefrigerant control Idemitsu FVC 68DOil typeOil charge volumePart 1 – System Outline 1–5 General Outline ESiE04-0311 Model EUWAN5KAZW1 EUWAP5KAZW1 EUWAB5KAZW1 EUWAN8KAZW1 EUWAP8KAZW1 EUWAB8KAZW1 13 No. of circuits4 Pump __ 1 x Horizontal multi-stage end-suction __ 1 x Horizontal multi-stage end-suction5 No. x type Model __ CH4-30 CH4-30 Nominal static height pump __ 238 kPa 216 kPa Nominal static height unit __ 205 kPa 154 kPa Hydraulic components Buffer tank __ 55 l __ 55 l 59 l Unit water volume 2l 3l 59 l 3l 3l 241 kg Expansion vessel __ 12 l __ 12 l 300 kg Pre-pressure 1.5 bar 1.5 bar expansion vessel Safety valve __ 3 bar __ 3 bar Dimensions 1230 x 1290 x 734 mm 1230 x 1290 x 734 mm (h x w x d) Weight Machine weight 150 kg 168 kg 180 kg 215 kg 229 kg Operation weight 152 kg 171 kg 239 kg 218 kg 232 kg Casing Colour Ivory white / Munsell code 5Y7.5/1 / ± RAL 7044 Material Polyester coated galvanised steel plate Sound power 67 dBA 76 dBA level (2) Safety devices ■ Low-pressure switch ■ High-pressure switch ■ Pump motor overcurrent ■ Discharge temperature control ■ Outlet water temperature protection ■ Compressor motor overcurrent relay ■ Fan thermal protector ■ Anti-recycling and guard timer ■ Digital display controller with electronic temperature control ■ Reverse phase protector ■ Flow switch. (1): The table below contains the minimum water volume settings. EUWA*5-8KAZW1 Setting 3K The minimum water volume for standard thermostat difference setting 3/new setting For reduced setting multiply this water volume by 0.1 K Minimum allowable setting (2): The sound power level is an absolute value that does not depend on the surroundings or the distance. It cannot be measured in the field (ISO 9614). 1–6 Part 1 – System OutlineESiE04-03 General OutlineNominal conditions The nominal conditions are as follows: 1 ■ Entering/leaving evaporator water temperature 12.5/7°C ■ Ambient air temperature 35°C ■ Power input is total input: Compressor + control circuit + fans + pump.Operation range The nominal operation range covers a leaving evaporator water temperature from 5°C (-5°C/-10°C for ZH/ZL option) to 20°C (pull down condition to 25°C). 3 4 5Part 1 – System Outline 1–7 General Outline ESiE04-0311 1.3 Technical Specifications: EUWA*10-12KAZW13 Technical The table below contains the technical specifications.4 specifications5 Model EUWAN10KAZW1 EUWAP10KAZW1 EUWAB10KAZW1 EUWAN12KAZW1 EUWAP12KAZW1 EUWAB12KAZW1 Nominal cooling 8.79 kW 22.5 kW 26.5 kW capacity 8.74 kW 11.5 kW Nominal input Capacity steps 0-100% Compressor Hermetically sealed scroll Type 2900 rpm Speed 50 W Crankcase heater No. x model (W1) 1 x JT265DA-YE 1 x JT335DA-YE Evaporator Type 1 x AC50-40HX Brased plate-heat exchanger 1 x AC50-50HX No. x model 108 l Climaflex 126 l Min.water volume in the system (1) Min.: 32 l/min Min.: 38 l/min Water flow rate Max.: 129 l/min Max.: 152 l/min Nominal water 64 l/min 76 l/min flow Nom. water 43 kPa 37 kPa pressure drop Insulation material Cross fin coil Hi-X tubes and PE coated waffle louvre fins Condenser 2 x 50 x 2.0 mm Type Rows x stages x 1.970 m² fin pitch 170 m³/min Face area Nominal air flow Vertical Discharge Direct drive Fan type No. of fans 2 No. of motors x output 1 x 190 kW and 1 x 230 kW 1 x 190 kW and 1 x 230 kW Piping connections 4.6 kg FBSP 1-1/4” 6.0 kg Evap. water R-407C in/outlet Thermostatic expansion valve Refrigerant circuit Refrigerant type Refrigerant charge Refrigerant control 1–8 Part 1 – System OutlineESiE04-03 General OutlineModel EUWAN10KAZW1 EUWAP10KAZW1 EUWAB10KAZW1 EUWAN12KAZW1 EUWAP12KAZW1 EUWAB12KAZW1 1Oil type Idemitsu FVC 68D 3 4Oil charge volume 2.7 l 5No. of circuits 1PumpNo. x type __ 1 x Horizontal multi-stage end-suction __ 1 x Horizontal multi-stage end-suctionModel __ CH4-30 __ CH4-30Nominal static __ 199 kPa __ 182 kPaheight pumpNominal static __ 123 kPa __ 105 kPaheight unitHydraulic componentsBuffer tank __ 55 l __ 55 l 60 lUnit water volume 3l 3l 59 l 3l 4l 274 kgExpansion vessel __ 12 l __ 12 l 335 kg 3 barPre-pressure 1.5 bar 1.5 barexpansion vesselSafety valve __ 3 bar __Dimensions 1450 x 1290 x 734 mm(h x w x d)WeightMachine weight 245 kg 259 kg 271 kg 248 kg 262 kgOperation weight 248 kg 262 kg 330 kg 251 kg 265 kgCasingColour Ivory white / Munsell code 5Y7.5/1 / ± RAL 7044Material Polyester coated galvanised steel plateSound power 78 dBAlevel (2)Safety devices ■ Low-pressure switch ■ High-pressure switch ■ Pump motor overcurrent ■ Discharge temperature control ■ Outlet water temperature protection ■ Compressor motor overcurrent relay ■ Fan thermal protector ■ Anti-recycling and guard timer ■ Digital display controller with electronic temperature control ■ Reverse phase protector ■ Flow switch. (1): The table below contains the minimum water volume settings. EUWA*10-12KAZW1 Setting 3K The minimum water volume for standard thermostat difference setting 3/new setting For reduced setting multiply this water volume by 0.1 K Minimum allowable settingPart 1 – System Outline 1–9 General Outline ESiE04-0311 (2): The sound power level is an absolute value that does not depend on the surroundings or the distance. It cannot be measured in the field (ISO 9614). Nominal conditions The nominal conditions are as follows: ■ Entering/leaving evaporator water temperature 12.5/7°C ■ Ambient air temperature 35°C ■ Power input is total input: Compressor + control circuit + fans + pump. Operation range The nominal operation range covers a leaving evaporator water temperature from 5°C (-5°C/-10°C for ZH/ZL option) to 20°C (pull down condition to 25°C).345 1–10 Part 1 – System OutlineESiE04-03 General Outline1.4 Technical Specifications: EUWA*16-20KAZW1 1Technical The table below contains the technical specifications. 3specifications 4 5Model EUWAN16KAZW1 EUWAP16KAZW1 EUWAB16KAZW1 EUWAN20KAZW1 EUWAP20KAZW1 EUWAB20KAZW1Nominal cooling 15.2 kW 37.0 kW 18.1 kW 46.6 kWcapacity 15.0 kW 17.9 kWNominal inputCapacity steps 0%-50%-100%Compressor Hermetically sealed scrollType 2900 rpmSpeed 50 WCrankcase heaterNo. x model (W1) 2 x JT212DA-YE 2 x JT265DA-YEEvaporatorType 1 x AC130-38DQ Brased plate-heat exchanger 1 x AC130-50DQNo. x model 88 l 111 lMin.water volume 22 kPain the system (1) Min.: 53 l/min Climaflex Min.: 67 l/minWater flow rate Max.: 212 l/min Max.: 267 l/minNominal water 106 l/min 134 l/minflowNom. water Cross fin coil Hi-X tubes and PE coated waffle louvre finspressure dropInsulation material 2 x 40 x 2 mm 2 x 50 x 2 mmCondenserType 2 x 1.570 m² 2 x 1.970 m²Rows x stages xfin pitch 2 x 170 m³/minFace area VerticalNominal air flowDischarge Direct driveFan type 4No. of fansNo. of motors x 2 x 190 kW + 2 x 230 kWoutputPiping connections FBSP 2”Evap. waterin/outlet R-407CRefrigerant circuitRefrigerant type 2 x 4.6 kg __ 2 x 5.9 kg __Refrigerant chargeRefrigerant control Thermostatic expansion valveOil type Idemitsu FVC 68DPart 1 – System Outline 1–11 General Outline ESiE04-0311 Model EUWAN16KAZW1 EUWAP16KAZW1 EUWAB16KAZW1 EUWAN20KAZW1 EUWAP20KAZW1 EUWAB20KAZW13 Pump __ 1 x Horizontal multi-stage end-suction __ 1 x Horizontal multi-stage end-suction4 No. x type5 Model __ CH8-30 __ CH8-30 Nominal static height pump __ 243 kPa __ 210 kPa Nominal static height unit __ 187 kPa __ 137 kPa Hydraulic components Buffer tank __ 55 l __ 55 l 66 l Unit water volume 6l 9l 65 l 6l 10 l 520 kg Expansion vessel __ 12 l __ 12 l 586 kg Pre-pressure 1.5 bar expansion vessel Safety valve __ 3 bar __ 3 bar Dimensions 1321 x 2580 x 734 mm 1541 x 2580 x 734 mm (h x w x d) Weight Machine weight 430 kg 448 kg 460 kg 490 kg 508 kg Operation weight 436 kg 457 kg 525 kg 496 kg 518 kg Casing Colour Ivory white / Munsell code 5Y7.5/1 / ± RAL 7044 Material Polyester coated galvanised steel plate Sound power 79 dBA 81 dBA level (2) Safety devices ■ Low-pressure switch ■ High-pressure switch ■ Pump motor overcurrent ■ Discharge temperature protection ■ Outlet water temperature protection ■ Compressor motor overcurrent relay ■ Fan thermal protector ■ Anti-recycling and guard timer ■ Digital display controller with electronic temperature control ■ Reverse phase protector ■ Flow switch. (1): The table below contains the minimum water volume settings. EUWA*16-20KAZW1 Setting 3K The minimum water volume for standard thermostat difference setting 3/new setting For reduced setting multiply this water volume by 0.1 K Minimum allowable setting (2): The sound power level is an absolute value that does not depend on the surroundings or the distance. It cannot be measured in the field (ISO 9614). 1–12 Part 1 – System OutlineESiE04-03 General OutlineNominal conditions The nominal conditions are as follows: 1 ■ Entering/leaving evaporator water temperature 12.5/7°C ■ Ambient air temperature 35°C ■ Power input is total input: Compressor + control circuit + fans + pump.Operation range The nominal operation range covers a leaving evaporator water temperature from 5°C (-5°C/-10°C for ZH/ZL option) to 20°C (pull down condition to 25°C). 3 4 5Part 1 – System Outline 1–13 General Outline ESiE04-0311 1.5 Technical Specifications: EUWA*24KAZW13 Technical The table below contains the technical specifications.4 specifications5 Model EUWAN24KAZW1 EUWAP24KAZW1 EUWAB24KAZW1 55.3 kW Nominal cooling capacity 24.0 kW 24.0 kW Nominal input Capacity steps 0%-50%-100% Compressor Hermetically sealed scroll Type 2900 rpm Speed 50 W Crankcase heater No. x model (W1) 2 x JT335DA-YE Evaporator Type Brased plate-heat exchanger No. x model 1 x AC130-58DQ Min.water volume in 132 l the system (1) Water flow rate Min.: 79 l/min Max.: 317 l/min Nominal water flow Nom. water 158 l/min pressure drop 22 kPa Insulation material Condenser Climaflex Type Rows x stages x fin Cross fin coil Hi-X tubes and PE coated waffle louvre fins pitch 2 x 50 x 2 mm Face area Nominal air flow 2 x 1.970 m² Discharge 2 x 170 m³/min Fan type No. of fans Vertical No. of motors x Direct drive output Piping connections 4 Evap. water in/outlet 2 x 190 kW + 2 x 230 kW Refrigerant circuit Refrigerant type FBSP 2” Refrigerant charge Refrigerant control R-407C Oil type 2 x 6.0 kg Thermostatic expansion valve Idemitsu FVC 68D 1–14 Part 1 – System OutlineESiE04-03 General Outline Model EUWAN24KAZW1 EUWAP24KAZW1 EUWAB24KAZW1 1 Pump __ 1 x Horizontal multi-stage end-suction 3 No. x type __ CH8-40 4 Model __ 191 kPa 5 Nominal static height __ 100 kPa pump Nominal static height unit Hydraulic components Buffer tank __ 55 l Unit water volume 7l 10 l 66 l Expansion vessel __ 12 l Pre-pressure 1.5 bar expansion vessel Safety valve __ 3 bar Dimensions 1541 x 2580 x 734 mm (h x w x d) Weight Machine weight 496 kg 514 kg 526 kg Operation weight 503 kg 524 kg 592 kg Casing Colour Ivory white / Munsell code 5Y7.5/1 / ± RAL 7044 Material Polyester coated galvanised steel plate Sound power level (2) 81 dBA Safety devices ■ Low-pressure switch ■ High-pressure switch ■ Pump motor overcurrent ■ Discharge temperature protection ■ Outlet water temperature protection ■ Compressor motor overcurrent relay ■ Fan thermal protector ■ Anti-recycling and guard timer ■ Digital display controller with electronic temperature control ■ Reverse phase protector ■ Flow switch. (1): The table below contains the minimum water volume settings. Setting EUWA*24KAZW1 The minimum water volume for standard thermostat differ- 3 K ence setting For reduced setting multiply this water volume by 3/new setting Minimum allowable setting 0.1 K (2): The sound power level is an absolute value that does not depend on the surroundings or the distance. It cannot be measured in the field (ISO 9614).Part 1 – System Outline 1–15 General Outline ESiE04-0311 Nominal conditions The nominal conditions are as follows: ■ Entering/leaving evaporator water temperature 12.5/7°C ■ Ambient air temperature 35°C ■ Power input is total input: Compressor + control circuit + fans + pump. Operation range The nominal operation range covers a leaving evaporator water temperature from 5°C (-5°C/-10°C for ZH/ZL option) to 20°C (pull down condition to 25°C).345 1–16 Part 1 – System OutlineESiE04-03 General Outline1.6 Technical Specifications: EUWY*5-8KAZW1 1Technical The table below contains the technical specifications. 3specifications 4 5Model EUWYN5KAZW1 EUWYP5KAZW1 EUWYB5KAZW1 EUWYN8KAZW1 EUWYP8KAZW1 EUWYB8KAZW1Nominal capacity Cooling: 9.1 kW Cooling: 17.1 kWNominal input Heating: 11.9 kW Heating: 18.5 kWCapacity steps Cooling: 3.78 kW Cooling: 7.45 kW Cooling: 7.46 kW Heating: 4.59 kW Heating: 7.10 kW Heating: 7.10 kW 0-100%Compressor Hermetically sealed scrollType 2900 rpmSpeedCrankcase heater 33 W 50 WNo. x model (W1) 1 x JT140BF-YE 1 x JT212DA-YEEvaporatorType 1 x AC50-34HX Brased plate-heat exchanger 1 x AC50-40HXNo. x model 43 l Climaflex 82 lMin.water volumein the system (1) Min.: 21 l/min Min.: 31 l/minWater flow rate Max.: 68 l/min Max.: 106 l/min Cooling: 26 l/min Cooling: 49 l/minNominal water flow Heating: 34 l/min Heating: 53 l/min Cooling: 10 kPa Cooling: 25 kPaNom. water Heating: 17 kPa Heating: 29 kPapressure dropInsulation material Cross fin coil Hi-X tubes and PE coated waffle louvre finsCondenser 2 x 40 x 2TypeRows x stages x fin 160 m³/min 1.570 m² 170 m³/minpitch 2 x 140 kW 1 x 190 kW and 1 x 230 kWFace area VerticalNominal air flow Direct driveDischargeFan type 2No. of fansNo. of motors x FBSP 1-1/4”outputPiping connections 4.6 kg R-407C 4.7 kgEvap. waterin/outlet Thermostatic expansion valveRefrigerant circuit Idemitsu FVC 68DRefrigerant typeRefrigerant chargeRefrigerant controlOil typePart 1 – System Outline 1–17 General Outline ESiE04-0311 Model EUWYN5KAZW1 EUWYP5KAZW1 EUWYB5KAZW1 EUWYN8KAZW1 EUWYP8KAZW1 EUWYB8KAZW13 Oil charge volume 1.5 l 2.7 l45 No. of circuits 1 Pump No. x type __ 1 x Horizontal multi-stage end-suction __ 1 x Horizontal multi-stage end-suction Model __ CH4-30 __ CH4-30 Nominal static __ Cooling: 244 kPa __ Cooling: 219 kPa height pump Heating: 236 kPa Heating: 214 kPa Nominal static __ Cooling: 223 kPa __ Cooling: 171 kPa Heating: 205 kPa height unit Heating: 160 kPa Hydraulic components Buffer tank __ 55 l __ 55 l Unit water volume 2l 3l 59 l 3l 3l 59 l Expansion vessel __ 12 l __ 12 l Pre-pressure 1.5 bar 1.5 bar expansion vessel 3 bar Safety valve __ 3 bar __ 1230 x 1290 x 734 mm Dimensions (h x w x d) Weight 163 kg 181 kg 193 kg 227 kg 241 kg 253 kg Machine weight 165 kg 184 kg 252 kg 230 kg 244 kg 312 kg Operation weight Casing Ivory white / Munsell code 5Y7.5/1 / ± RAL 7044 Colour Material Polyester coated galvanised steel plate Sound power level (2) 67 dBA 76 dBA Safety devices ■ Low-pressure switch ■ High-pressure switch ■ Pump motor overcurrent ■ Discharge temperature control ■ Outlet water temperature protection ■ Compressor motor overcurrent relay ■ Fan thermal protector ■ Anti-recycling and guard timer ■ Digital display controller with electronic temperature control ■ Reverse phase protector ■ Flow switch. (1): The table below contains the minimum water volume settings. EUWY*5-8KAZW1 Setting 3K The minimum water volume for standard thermostat difference setting 3/new setting For reduced setting multiply this water volume by 0.1 K Minimum allowable setting 1–18 Part 1 – System OutlineESiE04-03 General Outline (2): The sound power level is an absolute value that does not depend on the surroundings or the 1 distance. It cannot be measured in the field (ISO 9614).Nominal conditions The nominal conditions are as follows: ■ Entering/leaving evaporator water temperature 12.5/7°C ■ Ambient air temperature 35°C ■ Power input is total input: Compressor + control circuit + fans + pump.Operation range The nominal operation range covers: ■ A leaving evaporator water temperature from 5°C (-5°C/-20°C for ZH/ZL option) to 20°C (pull down condition to 25°C). ■ A leaving condensor water temperature from 35°C to 50°C. 3 4 5Part 1 – System Outline 1–19 General Outline ESiE04-0311 1.7 Technical Specifications: EUWY*10-12KAZW13 Technical The table below contains the technical specifications.4 specifications5 Model EUWYN10KAZW1 EUWYP10KAZW1 EUWYB10KAZW1 EUWYN12KAZW1 EUWYP12KAZW1 EUWYB12KAZW1 Nominal capacity Cooling: 21.0 kW Cooling: 25.0 kW Nominal input Heating: 24.0 kW Heating: 27.0 kW Capacity steps Cooling: 8.57 kW Cooling: 11.4 kW Heating: 9.10 kW Heating: 10.8 kW 0-100% Compressor Hermetically sealed scroll Type 2900 rpm Speed 50 W Crankcase heater No. x model (W1) 1 x JT265DA-YE 1 x JT335DA-YE Evaporator Type 100 l Brased plate-heat exchanger 119 l No. x model 1 x AC50-50HX Min.water volume Min.: 38 l/min Min.: 45 l/min in the system (1) Max.: 137 l/min Climaflex Max.: 155 l/min Water flow rate Cooling: 60 l/min Cooling: 72 l/min Heating: 69 l/min Heating: 77 l/min Nominal water flow Cooling: 24 kPa Cooling: 33 kPa Heating: 31 kPa Heating: 38 kPa Nom. water pressure drop Cross fin coil Hi-X tubes and PE coated waffle louvre fins Insulation material 2 x 50 x 2 Condenser Type 1.970 m² Rows x stages x 170 m³/min fin pitch Face area Vertical Nominal air flow Direct drive Discharge Fan type 2 No. of fans 1 x 190 kW and 1 x 230 kW No. of motors x output FBSP 1-1/4” Piping connections Evap. water R-407C in/outlet 5.4 kg Refrigerant circuit Thermostatic expansion valve Refrigerant type Idemitsu FVC 68D Refrigerant charge Refrigerant control Oil type 1–20 Part 1 – System OutlineESiE04-03 General OutlineModel EUWYN10KAZW1 EUWYP10KAZW1 EUWYB10KAZW1 EUWYN12KAZW1 EUWYP12KAZW1 EUWYB12KAZW1 1Oil charge volume 2.7 l 3 4No. of circuits 1 5PumpNo. x type __ 1 x Horizontal multi-stage end-suction __ 1 x Horizontal multi-stage end-suctionModel __ CH4-30 __ CH4-30Nominal static __ Cooling: 205 kPa __ Cooling: 188 kPaheight pump Heating: 193 kPa Heating: 180 kPaNominal static __ Cooling: 151 kPa __ Cooling: 118 kPa Heating: 127 kPaheight unit Heating: 100 kPaHydraulic componentsBuffer tank __ 55 l __ 55 lUnit water volume 3l 3l 59 l 3l 3l 59 lExpansion vessel __ 12 l __ 12 lPre-pressure 1.5 bar 1.5 barexpansion vessel 3 bar 3 barSafety valve __ __ 1450 x 1290 x 734 mmDimensions(h x w x d)WeightMachine weight 258 kg 272 kg 284 kg 258 kg 272 kg 284 kg 343 kgOperation weight 261 kg 275 kg 343 kg 261 kg 275 kgCasingColour Ivory white / Munsell code 5Y7.5/1 / ± RAL 7044Material Polyester coated galvanised steel plateSound power 78 dBAlevel (2)Safety devices ■ Low-pressure switch ■ High-pressure switch ■ Pump motor overcurrent ■ Discharge temperature control ■ Outlet water temperature protection ■ Compressor motor overcurrent relay ■ Fan thermal protector ■ Anti-recycling and guard timer ■ Digital display controller with electronic temperature control ■ Reverse phase protector ■ Flow switch. (1): The table below contains the minimum water volume settings. EUWY*10-12KAZW1 Setting 3K The minimum water volume for standard thermostat difference setting 3/new setting For reduced setting multiply this water volume by 0.1 K Minimum allowable settingPart 1 – System Outline 1–21 General Outline ESiE04-0311 (2): The sound power level is an absolute value that does not depend on the surroundings or the distance. It cannot be measured in the field (ISO 9614). Nominal conditions The nominal conditions are as follows: ■ Entering/leaving evaporator water temperature 12.5/7°C ■ Ambient air temperature 35°C ■ Power input is total input: Compressor + control circuit + fans + pump. Operation range The nominal operation range covers:3 ■ A leaving evaporator water temperature from 5°C (-5°C/-20°C for ZH/ZL option) to 20°C (pull down condition to 25°C). ■ A leaving condensor water temperature from 35°C to 50°C.45 1–22 Part 1 – System OutlineESiE04-03 General Outline1.8 Technical Specifications: EUWY*16-20KAZW1 1Technical The table below contains the technical specifications. 3specifications 4 5Model EUWYN16KAZW1 EUWYP16KAZW1 EUWYB16KAZW1 EUWYN20KAZW1 EUWYP20KAZW1 EUWYB20KAZW1Nominal capacity Cooling: 34.2 kW Cooling: 40.0 kWNominal input Heating: 37.0 kW Heating: 46.0 kWCapacity steps Cooling: 14.9 kW Cooling: 16.3 kW Heating: 14.2 kW Heating: 17.4 kW 0-100%Compressor Hermetically sealed scrollType 2900 rpmSpeed 50 WCrankcase heaterNo. x model (W1) 2 x JT212DA-YE 2 x JT265DA-YEEvaporatorType 1 x AC130-50DQ Brased plate-heat exchanger 1 x AC130-58DQNo. x model 82 l Climaflex 100 lMin.water volumein the system (1) Min.: 61 l/min Min.: 75 l/minWater flow rate Max.: 212 l/min Max.: 275 l/min Cooling: 98 l/min Cooling: 120 l/minNominal water flow Heating: 106 l/min Heating: 137 l/min Cooling: 12 kPa Cooling: 13 kPaNom. water Heating: 14 kPa Heating: 17 kPapressure dropInsulation material Cross fin coil Hi-X tubes and PE coated waffle louvre finsCondenserType 2 x 40 x 2 mm 2 x 50 x 2 mmRows x stages xfin pitch 2 x 1.570 m² 2 x 1.970 m²Face areaNominal air flow 2 x 170 m³/minDischarge VerticalFan typeNo. of fans Direct driveNo. of motors x 4outputPiping connections 2 x 190 kW + 2 x 230 kWEvap. waterin/outlet FBSP 2”Refrigerant circuitRefrigerant type 2 x 5.1 kg R-407C 2 x 5.2 kgRefrigerant chargeRefrigerant control Thermostatic expansion valveOil type Idemitsu FVC 68DPart 1 – System Outline 1–23 General Outline ESiE04-0311 Model EUWYN16KAZW1 EUWYP16KAZW1 EUWYB16KAZW1 EUWYN20KAZW1 EUWYP20KAZW1 EUWYB20KAZW13 Oil charge volume 2 x 2.7 l45 No. of circuits 2 Pump No. x type __ 1 x Horizontal multi-stage end-suction __ 1 x Horizontal multi-stage end-suction Model __ CH8-30 __ CH8-30 Nominal static __ Cooling: 251 kPa __ Cooling: 227 kPa Heating: 243 kPa height pump Heating: 204 kPa Nominal static __ Cooling: 209 kPa __ Cooling: 171 kPa Heating: 195 kPa height unit Heating: 134 kPa Hydraulic components Buffer tank __ 55 l __ 55 l Unit water volume 6l 9l 65 l 6l 10 l 66 l Expansion vessel __ 12 l __ 12 l Pre-pressure __ 3 bar 1.5 bar 3 bar expansion vessel __ 1541 x 2580 x 734 mm Safety valve 1321 x 2580 x 734 mm Dimensions (h x w x d) Weight Machine weight 455 kg 473 kg 485 kg 516 kg 534 kg 546 kg 612 kg Operation weight 461 kg 482 kg 550 kg 522 kg 544 kg Casing Colour Ivory white / Munsell code 5Y7.5/1 / ± RAL 7044 Material Polyester coated galvanised steel plate Sound power 79 dBA 81 dBA level (2) Safety devices ■ Low-pressure switch ■ High-pressure switch ■ Pump motor overcurrent ■ Discharge temperature protection ■ Outlet water temperature protection ■ Compressor motor overcurrent relay ■ Fan thermal protector ■ Anti-recycling and guard timer ■ Digital display controller with electronic temperature control ■ Reverse phase protector ■ Flow switch. (1): The table below contains the minimum water volume settings. EUWY*16-20KAZW1 Setting 3K The minimum water volume for standard thermostat difference setting 3/new setting For reduced setting multiply this water volume by 0.1 K Minimum allowable setting 1–24 Part 1 – System OutlineESiE04-03 General Outline (2): The sound power level is an absolute value that does not depend on the surroundings or the 1 distance. It cannot be measured in the field (ISO 9614).Nominal conditions The nominal conditions are as follows: ■ Entering/leaving evaporator water temperature 12.5/7°C ■ Ambient air temperature 35°C ■ Power input is total input: Compressor + control circuit + fans + pump.Operation range The nominal operation range covers: ■ A leaving evaporator water temperature from 5°C (-5°C/-20°C for ZH/ZL option) to 20°C (pull down condition to 25°C). ■ A leaving condensor water temperature from 35°C to 50°C. 3 4 5Part 1 – System Outline 1–25 General Outline ESiE04-0311 1.9 Technical Specifications: EUWY*24KAZW13 Technical The table below contains the technical specifications.4 specifications5 Model EUWYN24KAZW1 EUWYP24KAZW1 EUWYB24KAZW1 Nominal capacity Cooling: 50.0 kW Nominal input Heating: 54.0 kW Capacity steps Cooling: 22.8 kW Heating: 21.6 kW 0%-100% Compressor Hermetically sealed scroll Type 2900 rpm Speed 50 W Crankcase heater No. x model (W1) 2 x JT335DA-YE Evaporator Type Brased plate-heat exchanger No. x model 1 x AC130-58DQ Min.water volume in 119 l the system (1) Water flow rate Min.: 89 l/min Max.: 309 l/min Nominal water flow Cooling: 149 l/min Heating: 155 l/min Nom. water Cooling: 19 kPa pressure drop Heating: 22 kPa Insulation material Condenser Climaflex Type Rows x stages x fin Cross fin coil Hi-X tubes and PE coated waffle louvre fins pitch 2 x 50 x 2 mm Face area Nominal air flow 2 x 1.970 m² Discharge 2 x 170 m³/min Fan type No. of fans Vertical No. of motors x Direct drive output Piping connections 4 Evap. water in/outlet 2 x 190 kW + 2 x 230 kW Refrigerant circuit Refrigerant type FBSP 2” Refrigerant charge Refrigerant control R-407C Oil type 2 x 5.6 kg Oil charge volume Thermostatic expansion valve Idemitsu FVC 68D 2 x 2.7 l 1–26 Part 1 – System OutlineESiE04-03 General Outline Model EUWYN24KAZW1 EUWYP24KAZW1 EUWYB24KAZW1 1 No. of circuits 2 3 4 Pump __ 1 x Horizontal multi-stage end-suction 5 No. x type Model __ CH8-40 Nominal static height __ Cooling: 222 kPa Heating: 199 kPa pump Nominal static height __ Cooling: 146 kPa Heating: 111 kPa unit Hydraulic components Buffer tank __ 55 l Unit water volume 6l 10 l 66 l Expansion vessel __ 12 l Pre-pressure 1.5 bar expansion vessel Safety valve __ 3 bar Dimensions (h x w x d) Weight Machine weight 516 kg 534 kg 546 kg Operation weight 522 kg 544 kg 612 kg Casing Colour Ivory white / Munsell code 5Y7.5/1 / ± RAL 7044 Material Polyester coated galvanised steel plate Sound power level (2) 81 dBA Safety devices ■ Low-pressure switch ■ High-pressure switch ■ Pump motor overcurrent ■ Discharge temperature protection ■ Outlet water temperature protection ■ Compressor motor overcurrent relay ■ Fan thermal protector ■ Anti-recycling and guard timer ■ Digital display controller with electronic temperature control ■ Reverse phase protector ■ Flow switch. (1): The table below contains the minimum water volume settings. Setting EUWY*24KAZW1 The minimum water volume for standard thermostat differ- 3 K ence setting For reduced setting multiply this water volume by 3/new setting Minimum allowable setting 0.1 KPart 1 – System Outline 1–27 General Outline ESiE04-0311 (2): The sound power level is an absolute value that does not depend on the surroundings or the distance. It cannot be measured in the field (ISO 9614). Nominal conditions The nominal conditions are as follows: ■ Entering/leaving evaporator water temperature 12.5/7°C ■ Ambient air temperature 35°C ■ Power input is total input: Compressor + control circuit + fans + pump. Operation range The nominal operation range covers:3 ■ A leaving evaporator water temperature from 5°C (-5°C/-20°C for ZH/ZL option) to 20°C (pull down condition to 25°C). ■ A leaving condensor water temperature from 35°C to 50°C.45 1–28 Part 1 – System OutlineESiE04-03 General Outline1.10 Correction factors for glycol 1Correction factors The illustration below shows the correction factors for glycol for EUWA*5-24KAZW1 and EUWY*5-24KAZW1. 3 4 5Part 1 – System Outline 1–29General Outline ESiE04-0311 Legend The table below describes the patterns and symbols used for the correction factors illustration above. Pattern Description3 Ethylene glycol Glycol freezing Propylene glycol point Kc Correction on cooling capacity45 Ki Correction on power input Kf Correction on flow rate Kp Correction on pressure drop The table below contains glycol freezing points for different glycol concentrations. Type Concentration (wt%) 0 10 20 30 40 Ethylene glycol Freezing point °C 0 -4 -9 -16 -23 Propylene glycol Minimum LWE °C Freezing point °C 5 2 0 -5 -11 Minimum LWE °C 0 -3 -7 -13 -22 5 3 -2 -4 -101–30 Part 1 – System OutlineESiE04-03 General Outline1.11 Electrical Specifications: EUWA*5-8KAZW1 1Electrical The table below contains the electrical specifications (1). 3specifications 4 5Model EUWAN5KAZW1 EUWAP5KAZW1 EUWAB5KAZW1 EUWAN8KAZW1 EUWAP8KAZW1 EUWAB8KAZW1Power supply 62.2 A 63.5 A 3N~ 99.2 A 7.7 A 9.0 A 50 Hz 14.9 APhase 11.2 A 12.5 A 400 V 18.2 AFrequency 3 x 20 gL/gG 3 x 20 gL/gG ± 10 % 3 x 25 gL/gGVoltageVoltage tolerance __ 97.9 A 2.9 A __ 13.6 AUnit __ 95 A 16.9 A 10.7 AStarting current 14 ANominal running 3 x 25 gL/gGcurrent 3~Max. running 1~ 400.0 Vcurrent 230 VRecommended 1.3 Afuses 2.2 AFans 60.0 A 3~ 5.5 A 400 VPhaseVoltage 9.0 A Direct on lineMax. running 1~current 230 VCompressor Factory installedPhase 3~ __VoltageStarting current 400.0 V __Nom. runningcurrent 1.3 A __Max. runningcurrentStarting methodControl circuitPhaseVoltageRecommendedfusesPumpPhaseVoltageMax. runningcurrentPart 1 – System Outline 1–31 General Outline ESiE04-0311 Nominal conditions The nominal conditions are as follows: ■ Entering/leaving evaporator water temperature 12.5/7°C ■ Ambient air temperature 35°C ■ Power input is total input: Compressor + control circuit + fan +pumps. Operation range The operation range covers a leaving evaporator water temperature from 5°C to 20°C (pull down condition to 25°C).345 1–32 Part 1 – System OutlineESiE04-03 General Outline1.12 Electrical Specifications: EUWA*10-12KAZW1 1Electrical The table below contains the electrical specifications (1). 3specifications 4 5Model EUWAN10KAZW1 EUWAP10KAZW1 EUWAB10KAZW1 EUWAN12KAZW1 EUWAP12KAZW1 EUWAB12KAZW1Power supply 113 A 114 A 3N~ 140 A 15.9 A 17.2 A 50 Hz 21.8 APhase 19.9 A 21.2 A 400 V 28.2 AFrequency 3 x 25 gL/gG 3 x 32 gL/gG ± 10 % 3 x 40 gL/gGVoltageVoltage tolerance __ 139 A 2.9 A __ 20.5 AUnit __ 136.0 A 26.9 A 17.6 AStarting current 24.0 ANominal running 3 x 32 gL/gG Direct on linecurrentMax. running 1~ 3~current 230 V 400.0 VRecommendedfuses 2.9 A 1.3 AFans 110.0 A 3~ 13.0 A 400 VPhase 17.0 AVoltage Direct on line 1~Max. running 230 Vcurrent Factory installedCompressor 3~ __Phase 400.0 V __VoltageStarting current 1.3 A __Nom. runningcurrentMax. runningcurrentStarting methodControl circuitPhaseVoltageRecommendedfusesPumpPhaseVoltageMax. runningcurrentPart 1 – System Outline 1–33 General Outline ESiE04-0311 Nominal conditions The nominal conditions are as follows: ■ Entering/leaving evaporator water temperature 12.5/7°C ■ Ambient air temperature 35°C ■ Power input is total input: Compressor + control circuit + fan +pumps. Operation range The operation range covers a leaving evaporator water temperature from 5°C to 20°C (pull down condition to 25°C).345 1–34 Part 1 – System OutlineESiE04-03 General Outline1.13 Electrical Specifications: EUWA*16-20KAZW1 1Electrical The table below contains the electrical specifications. 3specifications 4 5Model EUWAN16KAZW1 EUWAP16KAZW1 EUWAB16KAZW1 EUWAN20KAZW1 EUWAP20KAZW1 EUWAB20KAZW1Power supply 3N~Phase 50 HzFrequency 400 VVoltage ± 10 %Voltage toleranceUnitStarting current 97.9 A 99.9 A 113 A 115 ANominal running 27.2 A 29.2 A 31.8 A 33.8 Acurrent 33.8 A 35.8 A 39.8 A 41.8 AMax. running 3 x 40 gL/gG 3 x 50 gL/gG 3 x 50 gL/gG 3 x 50 gL/gGcurrentRecommended __ 1~fuses __ 230 V __ 5.8 AFans 95.0 A 3~ 110.0 APhase 10.7 A 400 V 13.0 AVoltageMax. running 14.0 A Direct on line 17.0 Acurrent 1~Compressor 230/ 24 V AC (supplied by factory installed transformers)Phase Factory installedVoltageStarting current 50 WNom. runningcurrent 3~ __ 3~Max. runningcurrent 400.0 V __ 400.0 VStarting method 2.0 A __ 2.0 AControl circuitPhaseVoltageRecommendedfusesCrankcase heater(E1/2 HC)PumpPhaseVoltageMax. runningcurrentPart 1 – System Outline 1–35 General Outline ESiE04-0311 Nominal conditions The nominal conditions are as follows: ■ Entering/leaving evaporator water temperature 12.5/7°C ■ Ambient air temperature 35°C ■ Power input is total input: Compressor + control circuit + fan +pumps. Operation range The operation range covers a leaving evaporator water temperature from 5°C to 20°C (pull down condition to 25°C).345 1–36 Part 1 – System OutlineESiE04-03 General Outline1.14 Electrical Specifications: EUWA*24KAZW1 1Electrical The table below contains the electrical specifications. 3specifications 4 5 Model EUWAN24KAZW1 EUWAP24KAZW1 EUWAB24KAZW1 Power supply Phase 139 A 3N~ Frequency 41.0 A 50 Hz Voltage 53.8 A 400 V Voltage tolerance 3 x 63 gL/gG ± 10 % Unit 142 A 43.7 A Starting current Nominal running 56.5 A current Max. running 3 x 63 gL/gG current Recommended fuses Fans 1~ 230 V Phase 5.8 A Voltage Max. running current Compressor 3~ 400 V Phase 136.0 A Voltage 17.6 A Starting current Nom. running 24.0 A current Max. running Direct on line current Starting method Control circuit Phase 1~ Voltage Recommended fuses 230/ 24 V AC (supplied by factory installed transformers) Crankcase heater (E1/2 HC) Factory installed Pump 50 W 50 W Phase __ 3~ Voltage Max. running __ 400.0 V current __ 2.7 APart 1 – System Outline 1–37 General Outline ESiE04-0311 Nominal conditions The nominal conditions are as follows: ■ Entering/leaving evaporator water temperature 12.5/7°C ■ Ambient air temperature 35°C ■ Power input is total input: Compressor + control circuit + fan +pumps. Operation range The operation range covers a leaving evaporator water temperature from 5°C to 20°C (pull down condition to 25°C).345 1–38 Part 1 – System OutlineESiE04-03 General Outline1.15 Electrical Specifications: EUWY*5-8KAZW1 1Electrical The table below contains the electrical specifications (1). 3specifications 4 5Model EUWYN5KAZW1 EUWYP5KAZW1 EUWYB5KAZW1 EUWYN8KAZW1 EUWYP8KAZW1 EUWYB8KAZW1Power supply 62.2 A 63.5 A 3N~ 99.2 A 7.7 A 9.0 A 50 Hz 14.9 APhase 11.2 A 12.5 A 400 V 18.2 AFrequency 3 x 20 gL/gG 3 x 20 gL/gG ± 10 % 3 x 25 gL/gGVoltageVoltage tolerance __ 97.9 A 2.9 A __ 13.6 AUnit __ 95.0 A 16.9 A 10.7 AStarting current 14.0 ANominal running 3 x 25 gL/gGcurrent cooling 3~Max. running 1~ 400.0 Vcurrent 230 VRecommended 1.3 Afuses 2.2 AFans 60.0 A 3~ 5.5 A 400 VPhaseVoltage 9.0 A Direct on lineMax. running 1~current 230 VCompressor Factory installedPhase 3~ __VoltageStarting current 400.0 V __Nom. runningcurrent cooling 1.3 A __Max. runningcurrentStarting methodControl circuitPhaseVoltageRecommendedfusesPumpPhaseVoltageMax. runningcurrentPart 1 – System Outline 1–39 General Outline ESiE04-0311 Nominal conditions The nominal conditions are as follows: ■ Entering/leaving evaporator water temperature 12.5/7°C ■ Ambient air temperature 35°C ■ Power input is total input: Compressor + control circuit + fans + pump. Operation range The nominal operation range covers: ■ A leaving evaporator water temperature from 5°C (-5°C/-20°C for ZH/ZL option) to 20°C (pull down condition to 25°C). ■ A leaving condensor water temperature from 35°C to 50°C.345 1–40 Part 1 – System OutlineESiE04-03 General Outline1.16 Electrical Specifications: EUWY*10-12KAZW1 1Electrical The table below contains the electrical specifications (1). 3specifications 4 5Model EUWYN10KAZW1 EUWYP10KAZW1 EUWYB10KAZW1 EUWYN12KAZW1 EUWYP12KAZW1 EUWYB12KAZW1Power supply 113 A 114 A 3N~ 140 A 15.9 A 17.2 A 50 Hz 21.8 APhase 19.9 A 21.2 A 400 V 28.2 AFrequency 3 x 25 gL/gG 3 x 32 gL/gG ± 10 % 3 x 40 gL/gGVoltageVoltage tolerance __ 139 A 136.0 A __ 20.5 A 17.6 AUnit __ 24.0 A 26.9 AStarting current 3~Nominal running 3 x 32 gL/gG 400.0 Vcurrent coolingMax. running 1~ 1.3 Acurrent 230 VRecommended 2.9 Afuses 110.0 A 3~Fans 13.0 A 400 VPhase 17.0 A Direct on lineVoltage 1~Max. runningcurrent 230 V Factory installedCompressor 3~ __PhaseVoltage 400.0 V __Starting currentNom. running 1.3 A __current coolingMax. runningcurrentStarting methodControl circuitPhaseVoltageRecommendedfusesPumpPhaseVoltageMax. runningcurrentPart 1 – System Outline 1–41 General Outline ESiE04-0311 Nominal conditions The nominal conditions are as follows: ■ Entering/leaving evaporator water temperature 12.5/7°C ■ Ambient air temperature 35°C ■ Power input is total input: Compressor + control circuit + fans + pump. Operation range The nominal operation range covers: ■ A leaving evaporator water temperature from 5°C (-5°C/-20°C for ZH/ZL option) to 20°C (pull down condition to 25°C). ■ A leaving condensor water temperature from 35°C to 50°C.345 1–42 Part 1 – System OutlineESiE04-03 General Outline1.17 Electrical Specifications: EUWY*16-20KAZW1 1Electrical The table below contains the electrical specifications. 3specifications 4 5Model EUWYN16KAZW1 EUWYP16KAZW1 EUWYB16KAZW1 EUWYN20KAZW1 EUWYP20KAZW1 EUWYB20KAZW1Power supply 3N~Phase 50 HzFrequency 400 VVoltage ± 10 %Voltage toleranceUnitStarting current 97.9 A 99.9 A 113 A 115 ANominal running 27.2 A 29.2 A 31.8 A 33.8 Acurrent cooling 33.8 A 35.8 A 39.8 A 41.8 AMax. running 3 x 40 gL/gG 3 x 50 gL/gG 3 x 50 gL/gG 3 x 50 gL/gGcurrentRecommended __ 1~fuses __ 230 V __ 5.8 AFans 95.0 A 3~ 110.0 APhase 10.7 A 400 V 13.0 AVoltageMax. running 14.0 A Direct on line 17.0 Acurrent 1~Compressor 230 V Factory installedPhaseVoltage 3~ __ 3~Starting currentNom. running 400.0 V __ 400.0 Vcurrent coolingMax. running 2.0 A __ 2.0 AcurrentStarting methodControl circuitPhaseVoltageRecommendedfusesPumpPhaseVoltageMax. runningcurrentPart 1 – System Outline 1–43 General Outline ESiE04-0311 Nominal conditions The nominal conditions are as follows: ■ Entering/leaving evaporator water temperature 12.5/7°C ■ Ambient air temperature 35°C ■ Power input is total input: Compressor + control circuit + fans + pump. Operation range The nominal operation range covers: ■ A leaving evaporator water temperature from 5°C (-5°C/-20°C for ZH/ZL option) to 20°C (pull down condition to 25°C). ■ A leaving condensor water temperature from 35°C to 50°C.345 1–44 Part 1 – System OutlineESiE04-03 General Outline1.18 Electrical Specifications: EUWY*24KAZW1 1Electrical The table below contains the electrical specifications. 3specifications 4 5 Model EUWYN24KAZW1 EUWYP24KAZW1 EUWYB24KAZW1 Power supply Phase 139 A 3N~ Frequency 41.0 A 50 Hz Voltage 53.8 A 400 V Voltage tolerance 3 x 63 gL/gG ± 10 % Unit 142 A 43.7 A Starting current Nominal running 56.5 A current cooling Max. running 3 x 63 gL/gG current Recommended fuses Fans 1~ 230 V Phase 5.8 A Voltage Max. running current Compressor 3~ 400 V Phase 136.0 A Voltage 17.6 A Starting current Nom. running 24.0 A current cooling Max. running Direct on line current Starting method Control circuit Phase 1~ Voltage 230 V Recommended fuses Factory installed Pump 3~ 400.0 V Phase __ 2.7 A Voltage __ Max. running __ currentPart 1 – System Outline 1–45 General Outline ESiE04-0311 Nominal conditions The nominal conditions are as follows: ■ Entering/leaving evaporator water temperature 12.5/7°C ■ Ambient air temperature 35°C ■ Power input is total input: Compressor + control circuit + fans + pump. Operation range The nominal operation range covers: ■ A leaving evaporator water temperature from 5°C (-5°C/-20°C for ZH/ZL option) to 20°C (pull down condition to 25°C). ■ A leaving condensor water temperature from 35°C to 50°C.345 1–46 Part 1 – System OutlineESiE04-03 General Outline1.19 Outlook Drawing: EUWAN5-8KAZW1/EUWYN5-8KAZW1 1EUWAN5-8KAZW1/ The illustration below shows the outlook, the dimensions and the installation and service space of theEUWYN5-8KAZW1 unit (mm). FREE SPACE B1/B2 FILTERKIT 3 (delivered with the unit) SERVICE SPACE FREE SPACE MIN 3m 4 CAUTION FOR FAN 5 FIXATION 4XØ15Components The table below lists the components. No. Component No. Component 1 Air heat exchanger 2 Compressor 11 Air purge 3 Switch box 12 Pressure port 4 Main switch 13 Ball valve: 1 1/4” BSP 5 Digital display controller 14 Water filter: 1 1/4” BSP 6 Water heat exchanger 15 Flow switch 7 Water IN connection: 1 1/4” M BSP 16 High pressure gauge (optional) 8 Water OUT connection: 1 1/4” M BSP 17 Low pressure gauge (optional) 9 Power supply intake 18 4-way valve (only on H/P models) 10 Drain 19 Accumulator (only on H/P models) 20 Liquid receiver (only on H/P models)Part 1 – System Outline 1–47 General Outline ESiE04-0311 1.20 Outlook Drawing: EUWAP5-8KAZW1/EUWYP5-8KAZW1 EUWAP5-8KAZW1/ The illustration below shows the outlook, the dimensions and the installation and service space of the EUWYP5-8KAZW1 unit (mm). FREE SPACE B1/B23 FILTERKIT4 (delivered with the unit) SERVICE SPACE FREE SPACE MIN 3m CAUTION FOR FAN5 FIXATION 4XØ15 Components The table below lists the components. No. Component 1–48 No. Component 15 Manometer (water) 1 Air heat exchanger 16 Pressure port 2 Compressor 17 Ball valve: 1 1/4” BSP 3 Switch box 18 Water filter: 1 1/4” BSP 4 Main switch 19 Pump 5 Pump switch 20 Regulation valve 6 Digital display controller 21 Flow switch 7 Water heat exchanger 22 High pressure gauge (optional) 8 Water IN connection: 1 1/4” M BSP 23 Low pressure gauge (optional) 9 Water OUT connection: 1 1/4” M BSP 24 Pump drain 10 Power supply intake 25 4-way valve (only on H/P models) 11 Drain 26 Accumulator (only on H/P models) 12 Air purge 27 Liquid receiver (only on H/P models) 13 Expansion vessel 14 Safety valve Part 1 – System OutlineESiE04-03 General Outline1.21 Outlook Drawing: EUWAB5-8KAZW1/EUWYB5-8KAZW1 1EUWAB5-8KAZW1/ The illustration below shows the outlook, the dimensions and the installation and service space of theEUWYB5-8KAZW1 unit (mm). FREE SPACE B1/B2 FILTERKIT 3 (delivered with the unit) SERVICE SPACE FREE SPACE MIN 3m 4 CAUTION FOR FAN 5 FIXATION 4XØ15Components The table below lists the components. No. Component No. Component 1 Air heat exchanger 2 Compressor 15 Manometer (water) 3 Switch box 16 Pressure port 4 Main switch 17 Ball valve: 1 1/4” BSP 5 Pump switch 18 Water filter: 1 1/4” BSP 6 Digital display controller 19 Pump 7 Water heat exchanger 20 Regulation valve 8 Water IN connection: 1 1/4” M BSP 21 Flow switch 9 Water OUT connection: 1 1/4” M BSP 22 High pressure gauge (optional) 10 Power supply intake 23 Low pressure gauge (optional) 11 Drain 24 Pump drain 12 Air purge 25 Buffertank 13 Expansion vessel 26 4-way valve (only on H/P models) 14 Safety valve 27 Accumulator (only on H/P models) 28 Liquid receiver (only on H/P models)Part 1 – System Outline 1–49 General Outline ESiE04-0311 1.22 Outlook Drawing: EUWAN10-12KAZW1/EUWYN10-12KAZW1 EUWAN10-12KAZW The illustration below shows the outlook, the dimensions and the installation and service space of the 1/EUWYN10-12KAZ unit (mm). W1 FREE SPACE B1/B23 FILTERKIT4 (delivered with the unit) SERVICE SPACE FREE SPACE MIN 3m CAUTION FOR FAN5 FIXATION 4XØ15 Components The table below lists the components: No. Component No. Component 1 Air heat exchanger 11 Air purge 12 Pressure port 2 Compressor 13 Ball valve: 1 1/4” BSP 14 Water filter: 1 1/4” BSP 3 Switch box 15 Flow switch 16 High pressure gauge (optional) 4 Main switch 17 Low pressure gauge (optional) 18 4-way valve (only on H/P models) 5 Digital display controller 19 Accumulator (only on H/P models) 20 Liquid receiver (only on H/P models) 6 Water heat exchanger 7 Water IN connection: 1 1/4” M BSP 8 Water OUT connection: 1 1/4” M BSP 9 Power supply intake 10 Drain 1–50 Part 1 – System OutlineESiE04-03 General Outline1.23 Outlook Drawing: EUWAP10-12KAZW1/EUWYP10-12KAZW1 1EUWAP10-12KAZW The illustration below shows the outlook, the dimensions and the installation and service space of the1/EUWYP10-12KAZ unit (mm).W1 FREE SPACE B1/B2 FILTERKIT 3 (delivered with the unit) SERVICE SPACE 4 FREE SPACE MIN 3m CAUTION FOR FAN 5 FIXATION 4XØ15Part 1 – System Outline 1–51 General Outline ESiE04-0311 Components The table below lists the components.3 No. Component No. Component4 1 Air heat exchanger 15 Manometer (water) 16 Pressure port 2 Compressor 17 Ball valve: 1 1/4” BSP 18 Water filter: 1 1/4” BSP 3 Switch box 19 Pump 20 Regulation valve 4 Main switch 21 Flow switch 22 High pressure gauge (optional) 5 Pump switch 23 Low pressure gauge (optional) 24 Pump drain 6 Digital display controller 25 4-way valve (only on H/P models) 26 Accumulator (only on H/P models) 7 Water heat exchanger 27 Liquid receiver (only on H/P models) 8 Water IN connection: 1 1/4” M BSP 9 Water OUT connection: 1 1/4” M BSP 10 Power supply intake 11 Drain 12 Air purge 13 Expansion vessel 14 Safety valve5 1–52 Part 1 – System OutlineESiE04-03 General Outline1.24 Outlook Drawing: EUWAB10-12KAZW1/EUWYB10-12KAZW1 1EUWAB10-12KAZW The illustration below shows the outlook, the dimensions and the installation and service space of the1/EUWYB10-12KAZ unit (mm).W1 FREE SPACE B1/B2 FILTERKIT 3 (delivered with the unit) SERVICE SPACE FREE SPACE MIN 3m 4 CAUTION FOR FAN 5 FIXATION 4XØ15Part 1 – System Outline 1–53 General Outline ESiE04-0311 Components The table below lists the components. No. Component3 No. Component 15 Manometer (water)4 1 Air heat exchanger 16 Pressure port 2 Compressor 17 Ball valve: 1 1/4” BSP 3 Switch box 18 Water filter: 1 1/4” BSP 4 Main switch 19 Pump 5 Pump switch 20 Regulation valve 6 Digital display controller 21 Flow switch 7 Water heat exchanger 22 High pressure gauge (optional) 8 Water IN connection: 1 1/4” M BSP 23 Low pressure gauge (optional) 9 Water OUT connection: 1 1/4” M BSP 24 Pump drain 10 Power supply intake 25 Buffertank 11 Drain 26 4-way valve (only on H/P models) 12 Air purge 27 Accumulator (only on H/P models) 13 Expansion vessel 28 Liquid receiver (only on H/P models) 14 Safety valve5 1–54 Part 1 – System OutlineESiE04-03 General Outline1.25 Outlook Drawing: EUWAN16KAZW1/EUWYN16KAZW1 1EUWAN16KAZW1/ The illustration below shows the outlook, the dimensions and the installation and service space of theEUWYN16KAZW1 unit (mm). FREE SPACE B1/B2 FILTERKIT (delivered with the unit) 3 SERVICE SPACE FREE SPACE MIN 3m CAUTION FOR FAN 4 5 FIXATION 4XØ15Components The table below lists the components. No. Component No. Component 1 Air heat exchanger 2 Compressor 11 Air purge 3 Switch box 12 Pressure port 4 Main switch 13 Ball valve: 1 1/4” BSP 5 Digital display controller 14 Water filter: 1 1/4” BSP 6 Water heat exchanger 15 Flow switch 7 Water IN connection: 1 1/4” M BSP 16 High pressure gauge (optional) 8 Water OUT connection: 1 1/4” M BSP 17 Low pressure gauge (optional) 9 Power supply intake 18 4-way valve (only on H/P models) 10 Drain 19 Accumulator (only on H/P models) 20 Liquid receiver (only on H/P models)Part 1 – System Outline 1–55 General Outline ESiE04-0311 1.26 Outlook Drawing: EUWAP16KAZW1/EUWYP16KAZW1 EUWAP16KAZW1/ The illustration below shows the outlook, the dimensions and the installation and service space of the EUWYP16KAZW1 unit (mm). FREE SPACE B1/B2 FILTERKIT (delivered with the unit)3 SERVICE SPACE4 FREE SPACE MIN 3m CAUTION FOR FAN CAUTION FOR FAN5 FIXATION 4XØ15 Components The table below lists the components. 1–56 No. Component No. Component 1 Air heat exchanger 15 Pressure port 16 Ball valve 2 Compressor 17 Water filter 18 Pump 3 Switch box 19 Regulation valve 20 Flow switch 4 Main switch 21 High pressure gauge (optional) 22 Low pressure gauge (optional) 5 Pump switch 23 Pump drain 24 Water pressure gauge 6 Digital display controller 25 4-way valve (only on H/P models) 26 Accumulator (only on H/P models) 7 Water heat exchanger 27 Liquid receiver (only on H/P models) 8 Water IN connection: 2” M BSP 9 Water OUT connection: 2” M BSP 10 Power supply intake 11 Drain 12 Air purge 13 Expansion vessel 14 Safety valve Part 1 – System OutlineESiE04-03 General Outline1.27 Outlook Drawing: EUWAB16KAZW1/EUWAB16KAZW1 1EUWAB16KAZW1/ The illustration below shows the outlook, the dimensions and the installation and service space of theEUWAB16KAZW1 unit (mm). FREE SPACE B1/B2 FILTERKIT (delivered with the unit) SERVICE SPACE 3 4 FREE SPACE MIN 3mCAUTION FOR FAN CAUTION FOR FAN FIXATION 5 4XØ15Components The table below lists the components No. Component No. Component 1 Air heat exchanger 2 Compressor 15 Pressure port 3 Switch box 16 Ball valve 4 Main switch 17 Water filter 5 Pump switch 18 Pump 6 Digital display controller 19 Regulation valve 7 Water heat exchanger 20 Flow switch 8 Water IN connection: 2” M BSP 21 High pressure gauge (optional) 9 Water OUT connection: 2” M BSP 22 Low pressure gauge (optional) 10 Power supply intake 23 Pump drain 11 Drain 24 Water pressure gauge 12 Air purge 25 4-way valve (only on H/P models) 13 Expansion vessel 26 Accumulator (only on H/P models) 14 Safety valve 27 Liquid receiver (only on H/P models) 28 BuffertankPart 1 – System Outline 1–57 General Outline ESiE04-0311 1.28 Outlook Drawing: EUWAN20-24KAZW1/EUWYN20-24KAZW1 EUWAN20-24KAZW The illustration below shows the outlook, the dimensions and the installation and service space of the 1/EUWYN20-24KAZ unit (mm). W1 FREE SPACE B1/B23 FILTERKIT4 (delivered with the unit) SERVICE SPACE FREE SPACE MIN 3m CAUTION FOR FAN CAUTION FOR FAN5 FIXATION 4XØ15 Components The table below lists the components. No. Component No. Component 1 Air heat exchanger 11 Air purge 12 Pressure port 2 Compressor 13 Ball valve 14 Water filter 3 Switch box 15 Flow switch 16 High pressure gauge (optional) 4 Main switch 17 Low pressure gauge (optional) 18 4-way valve (only on H/P models) 5 Digital display controller 19 Accumulator (only on H/P models) 20 Liquid receiver (only on H/P models) 6 Water heat exchanger 7 Water IN connection: 2” M BSP 8 Water OUT connection: 2” M BSP 9 Power supply intake 10 Drain 1–58 Part 1 – System OutlineESiE04-03 General Outline1.29 Outlook Drawing: EUWAP20-24KAZW1/EUWYP20-24KAZW1 1EUWAP20-24KAZW The illustration below shows the outlook, the dimensions and the installation and service space of the1/EUWYP20-24KAZ unit (mm).W1 FREE SPACE B1/B2 FILTERKIT 3 (delivered with the unit) 4 5 SERVICE SPACE FREE SPACE MIN 3mCAUTION FOR FAN CAUTION FOR FAN FIXATION 4XØ15Part 1 – System Outline 1–59 General Outline ESiE04-0311 Components The table below lists the components. No. Component3 No. Component 15 Pressure port4 1 Air heat exchanger 16 Ball valve 2 Compressor 17 Water filter 3 Switch box 18 Pump 4 Main switch 19 Regulation valve 5 Pump switch 20 Flow switch 6 Digital display controller 21 High pressure gauge (optional) 7 Water heat exchanger 22 Low pressure gauge (optional) 8 Water IN connection: 2” M BSP 23 Pump drain 9 Water OUT connection: 2” M BSP 24 Water pressure gauge 10 Power supply intake 25 4-way valve (only on H/P models) 11 Drain 26 Accumulator (only on H/P models) 12 Air purge 27 Liquid receiver (only on H/P models) 13 Expansion vessel 14 Safety valve5 1–60 Part 1 – System OutlineESiE04-03 General Outline1.30 Outlook Drawing: EUWAB20-24KAZW1/EUWYB20-24KAZW1 1EUWAB20-24KAZW The illustration below shows the outlook, the dimensions and the installation and service space of the1/EUWYB20-24KAZ unit (mm).W1 FREE SPACE B1/B2 FILTERKIT 3 (delivered with the unit) 4 5 SERVICE SPACE FREE SPACE MIN 3mCAUTION FOR FAN CAUTION FOR FAN FIXATION 4XØ15Part 1 – System Outline 1–61 General Outline ESiE04-0311 Components The table below lists the components. No. Component3 No. Component 15 Pressure port4 1 Air heat exchanger 16 Ball valve 2 Compressor 17 Water filter 3 Switch box 18 Pump 4 Main switch 19 Regulation valve 5 Pump switch 20 Flow switch 6 Digital display controller 21 High pressure gauge (optional) 7 Water heat exchanger 22 Low pressure gauge (optional) 8 Water IN connection: 2” M BSP 23 Pump drain 9 Water OUT connection: 2” M BSP 24 Water pressure gauge 10 Power supply intake 25 4-way valve (only on H/P models) 11 Drain 26 Accumulator (only on H/P models) 12 Air purge 27 Liquid receiver (only on H/P models) 13 Expansion vessel 28 Buffertank 14 Safety valve5 1–62 Part 1 – System OutlineESiE04-03 Piping Layout2 Piping Layout Part 1 12.1 What Is in This Chapter?Introduction This chapter describes the internal refrigeration circuit. The water piping is considered to be a commonOverview practice and is, therefore, not described. 3 This chapter contains the following topics: Topic See page 2.2–Installation outline 1–64 4 2.3–Functional Diagram Refrigeration Circuit: EUWA*5-24KAZW1 2.4–Functional Diagram Refrigeration Circuit: EUWY*5-24KAZW1 1–65 1–68 5Part 1 – System Outline 1–63 Piping Layout ESiE04-0311 2.2 Installation outline Introduction The installation outline contains the main parts of a typical installation: ■ Chiller ■ Primary water circuit ■ Secondary water circuit. Typical installation The illustration below shows a typical installation. Some of these components may not be present in all the chillers described in this manual. Chiller Secondary water circuit3 5 2 6 1 34 6 4 8 T1 T2 8 12 75 9 P1 P2 9 10 16 11 14 13 11 15 Primary water circuit Components The table below lists the components. Water filter No. Chiller No. Primary water circuit 1 Compressor 9 Pressure measuring points 2 Air-heat exchanger 10 Flow switch 3 Expansion valve 11 Shut-off valves 4 Water-heat exchanger 12 Buffer tank 5 Fan motor 13 Water filter 6 Refrigerant filter strainer 14 Water pump 7 Water connections 15 Drain valve 8 Temperature measuring points 16 Expansion tank Make sure a filter is installed in front of the water inlet of the plate-heat exchanger. The plate-heat exchangers are sensitive to dirt and small particles. The mesh opening of the filter is max. 0.5 mm. 1–64 Part 1 – System OutlineESiE04-03 Piping Layout2.3 Functional Diagram Refrigeration Circuit: EUWA*5-24KAZW1 1Functional diagram The illustration below shows the functional diagram of the refrigeration circuit of EUWA*5-24KAZW1. It is also applicable for glycol applications. FIELD INSTALLATION P/B-MODELS DRAIN 3 4 N-MODELS P/B-MODELS N/P-MODELS P-MODELS N/P-MODELS B-MODELS 5 WATER SIDE COOLING WATER INLET WATER. SIDE WATER OUTLET REFRIGERANT SIDE OVERVIEW EUWA 5-8-10-12: 1x EUWA 12-20-24: 2x REFR. SIDEPart 1 – System Outline 1–65Piping Layout ESiE04-0311 Symbols The table below describes the symbols.3 Symbol Description Symbol Description Check valve R3T Inlet water temperature sensor Flare connection Screw connection R4T Outlet water temperature sensor Flange connection Pinched pipe R6T Ambient temperature sensor Spinned pipe S*HP High-pressure switch S*LP Low-pressure switch M*F Condensor fan M*C Compressor Components The table below describes the main components of the refrigeration circuit on the refrigeration side. refrigeration side No. Component Function / remark4 1 Compressor A hermetically sealed scroll compressor.5 2 Water-heat exchanger The water-heat exchanger is of the brazed plate-heat exchanger (evaporator) type. 3 Air-heat exchanger The air-heat exchanger is of the cross fin coil type. Hi-X-tubes and PE coated waffle louvre fins are used. The air is discharged (condensor) upwards. 4 Fan Direct driven single or two speed motor. 5 Expansion valve The thermostatic expansion valve is set up to control the superheat between 5°C and 7°C. 6 Low-pressure switch This switch acts as a circuit safety. ■ Standard setting: OFF = 2 bar ± 0.3 ■ Standard setting: ON = 0.2 bar ± 0.2 ■ Glycol application setting: OFF = 1.5 bar ± 0.3 ■ Glycol application setting: ON = 0.5 bar ± 0.2 7 High-pressure switch This switch acts as a circuit safety. ■ Standard setting: OFF = 21.6 bar +0/-1 ■ Standard setting: ON = 30.9 bar +0/-1 8 Strainer This strainer prevents dirt particles from entering the expansion valve. 9 Water in- and outlet The water in- and outlet connections are made of galvanized steel pipe (British Standard Pipe - BSP). The pipes are not connections insulated. If copper field piping is used for the water circuit, then precau- tion should be taken to prevent electrolytic corrosion. 10 Low-pressure The low-pressure service port is used to connect a service port low-pressure gauge. 11 High-pressure The high-pressure service port is used to connect a service port high-pressure gauge.1–66 Part 1 – System OutlineESiE04-03 Piping LayoutComponents water The table below describes the main components of the refrigeration circuit on the water side. 1side 3 No. Component Function / remark 4 a Shut-off valve Makes it possible to shut-off a part of the water piping for maintenance (e.g. to change a filter). b Air purge To purge the water circuit, to prevent air from entering the water circuit. c Service port The service port is used to connect a pressure gauge. d Water tempera- The water temperature sensors are used to control ture sensor the thermostat function at the heat exchanger inlet. e Freeze-up sensor This protection device shuts down the circuit when the temperature of the chilled water becomes too low in order to prevent the water from freezing during operation. f Strainer This strainer prevents dirt particles from entering the water circuit. EUWAB5-24KAZW1 EUWAP5-24KAZW1 g Flow switch The flow switch is used to check if there is flow. EUWAN5-24KAZW1 h Drain valve The drain valve is used to drain water from the circuit. 5 i Expansion vessel The expansion vessel deals with water expansion, which occurs when the temperature of the water varies. j Pump The pump circulates the water. k Pressure gauge Standard is the pressure gauge fitted to the unit. n Safety valve Maximum 3 bar pressure. l Buffer tank This buffer tank of 55 l is used to store chilled water to prevent the compressor from switching ON/OFF continuously depending on the load. m Pressure regula- The pressure regulation valve is used to regulate tion valve the pressure of the water side.Part 1 – System Outline 1–67 Piping Layout ESiE04-0311 2.4 Functional Diagram Refrigeration Circuit: EUWY*5-24KAZW1 Functional diagram The illustration below shows the functional diagram of the refrigeration circuit of EUWY*5-24KAZW1. It is also applicable for glycol applications. FIELD INSTALLATION P/B-MODELS DRAIN3 WATER SIDE B-MODELS4 N-MODELS P/B-MODELS N/P-MODELS5 P-MODELS N/P-MODELS HEATING COOLING REFRIGERANT SIDE WATER EVAPORATOR INLET CONDENSOR WATER. SIDE WATER OUTLET OVERVIEW EVAPORATOR CONDENSOR EUWA 5-8-10-12: 1x EUWA 12-20-24: 2x REFR. SIDE 1–68 Part 1 – System OutlineESiE04-03 Piping LayoutSymbols The table below describes the symbols. 1 3 Symbol Description Symbol Description R3T Inlet water temperature sensor M*F Condensor fan R4T Outlet water temperature sensor M*C Compressor R6T Ambient temperature sensor Check valve R7-8T Coil temperature sensor Flare connection S*HP High-pressure switch Screw connection S*LP Low-pressure switch Flange connection S*T Discharge temperature controller Pinched pipe YRV* 4-way valve Spinned pipeComponents The table below describes the main components of the refrigeration circuit on the refrigeration side. 4refrigeration side No. Component Function / remark 1 Compressor A hermetically sealed scroll compressor. 2 Water-heat exchanger The water-heat exchanger is of the brazed plate-heat exchanger (evaporator) type. 3 Air-heat exchanger The air-heat exchanger is of the cross fin coil type. Hi-X-tubes 5 (condensor) and PE coated waffle louvre fins are used. The air is discharged upwards. 4 Fan Direct driven single or two speed motor. 5 Expansion valve The thermostatic expansion valve is set up to control the superheat between 5°C and 7°C. 6 Low-pressure switch This switch acts as a circuit safety. 7 High-pressure switch ■ Standard setting: OFF = 2 bar ± 0.3 ■ Standard setting: ON = 0.2 bar ± 0.2 8 Strainer ■ Glycol application setting: OFF = 1.5 bar ± 0.3 ■ Glycol application setting: ON = 0.5 bar ± 0.2 Bi-flow This switch acts as a circuit safety. 9 Water in- and outlet ■ Standard setting: OFF = 21.6 bar +0/-1 ■ Standard setting: ON = 30.9 bar +0/-1 connections This strainer prevents dirt particles from entering the expansion 10 Low-pressure valve. The type of this strainer is a bi-flow strainer. service port The water in- and outlet connections are made of galvanized steel pipe (British Standard Pipe - BSP). The pipes are not insulated. If copper field piping is used for the water circuit, then precau- tion should be taken to prevent electrolytic corrosion. The low-pressure service port is used to connect a low-pressure gauge.Part 1 – System Outline 1–69 Piping Layout ESiE04-0311 No. Component Function / remark 11 High-pressure The high-pressure service port is used to connect a service port high-pressure gauge. 12 Liquid receiver The liquid receiver temporarily holds the refrigerant which has 13 Accumulator been liquified by the condensor before being send to the expansion valve. 14 4-way valve The accumulator is used to separate the gas from the liquid in order to prevent the compressor from pumping liquid. The 4-way valve is energized during cooling.3 Components water The table below describes the main components of the refrigeration circuit on the water side. side No. Component Function / remark a Shut-off valve Makes it possible to shut-off a part of the water piping for maintenance (e.g. to change a filter).4 b Airport To purge the water circuit, to prevent air from entering the water circuit. c Service port The service port is used to connect a pressure gauge. d Water tempera- The water temperature sensors are used to control ture sensor the thermostat function at the heat exchanger inlet.5 e Freeze-up sensor This protection device shuts down the circuit when the temperature of the chilled water becomes too low in order to prevent the water from freezing during operation. f Strainer This strainer prevents dirt particles from entering the water circuit. EUWYB5-24KAZW1 EUWYP5-24KAZW1 g Flow switch The flow switch is used to check if there is flow. EUWYN5-24KAZW1 h Drain valve The drain valve is used to drain water from the circuit. i Expansion vessel The expansion vessel deals with water expansion, which occurs when the temperature of the water varies. j Pump The pump circulates the water. k Pressure gauge Standard is the pressure gauge fitted to the unit. n Safety valve Maximum 3 bar pressure. l Buffer tank This buffer tank of 55 l is used to store chilled water to prevent the compressor from switching ON/OFF continuously depending on the load. m Pressure regula- The pressure regulation valve is used to regulate tion valve the pressure of the water side. 1–70 Part 1 – System OutlineESiE04-03 Wiring Layout3 Wiring Layout Part 1 13.1 What Is in This Chapter?Introduction This chapter contains the following information: 3Overview ■ Main functions of the EUWA*5-24KAZW1 and EUWY*5-24KAZW1 ■ Switch box layout ■ Wiring diagram See page 4 This chapter contains the following topics: 1–72 Topic 3.2–Main Functions of the EUWA*5-24KAZW1 and EUWY*5-24KAZW1 1–73 3.3–Switch Box Layout: EUWA*5-24KAZW1 and EUWY*5-24KAZW1 3.3–Switch Box Layout: EUWA*5-24KAZW1 and EUWY*5-24KAZW1 1–73 3.4–PCB Layout of the EUWA*5-24KAZW1 and EUWY*5-24KAZW1 3.5–Wiring Diagram: EUWA*5-24KAZW1 and EUWY*5-24KAZW1 1–75 5 1–80Part 1 – System Outline 1–71 Wiring Layout ESiE04-0311 3.2 Main Functions of the EUWA*5-24KAZW1 and EUWY*5-24KAZW13 Main functions The table below describes the components connected to the µcontroller.45 Ter- Signal Connection Wiring diagram symbol Description minal Connector I/O PCB ID1-GND X71A X65A S10L Flow switch ID2-GND (5-10) X3M S7S Remote cool/heat ID3-GND X6A/X7A S1HP/S1HP High-pressure X8A/X9A switch Digital input Q1D/Q2D Discharge protector X10A/X11A K4S/K55 Thermal overcurrent X1 ID4-GND X63A/X64A S4LP/S5LP Low-pressure switch ID5-GND X3M S9S Remote ON/OFF B1-GND X71A X60A R3T Evaporator inlet water t° (1-4) Analog B2-GND X61A R4T Evaporator outlet input B3-GND water t° _ _ _ Y1-GND _ _ _ C1/2-NO1 X50A X17A K1M Compressor on circuit 1 C1/2-NO2 X19A K2M Compressor on circuit 2 X2 Digital C3/4-NO3 X51A X29A K1P output Y1R/Y2R Contact for pump C3/4-NO4 X5-X6/ Reversing valve X7-X8 C5-NO5 X70A X1M (1-2) H3P Alarm voltage-free contact 1–72 Part 1 – System OutlineESiE04-03 Wiring Layout3.3 Switch Box Layout: EUWA*5-24KAZW1 and EUWY*5-24KAZW1 1Double circuit The illustration below shows the switch box layout for a double circuit.layout 3 4 5Part 1 – System Outline 1–73 Wiring Layout ESiE04-0311 Single circuit layout The illustration below shows the switch box layout for a single circuit.3 The table below describes the components. Components Wiring diagram Description symbol4 C1/C2/C3/C4 AC motor capacitors 12 µF5 TR1/TR2 Power supply transformator K1P Pump contactor K6S Pump K4S/K5S Circuit 1/circuit 2 K1M/K2M Compressor contactor circuit 1/circuit 2 S12M Main switch S21P Pump switch (on front switch box) 1 I/O PCB 2 Main switch (on front switch box) 3 Auxiliary contact for K1M and K2M 1–74 Part 1 – System OutlineESiE04-03 Wiring Layout3.4 PCB Layout of the EUWA*5-24KAZW1 and EUWY*5-24KAZW1 1PCB layout The illustration below shows the I/O PCB layout of chiller types EUWA*5-24KAZW1 and EUWY*5-24KAZW1. X29A X30A X22A X21A X24A X23A X28A X51A X13A X12A X15A X14A X27A X6A X8A X73A 3 X11A X10A X7A X60A X61A X62A X40A X41A X42A X9A X17A X81A X16A 4 X50A X71A(X1) X28A X18A 5 X19A X63A X66A X64A X65A X1A X4A X2A X5A X55A X11 X3A X78A X79A X80A S9S S9S S7S S7S GO G X70A X52A X53A X2M ESH ESH N L X1M Y3R Y3R H6P H6P H5P H5P H4P H4P H3P H3PPart 1 – System Outline 1–75Wiring Layout ESiE04-0311 Components The table below describes the components.34 Connector Wiring diagram Description5 symbol 1–76 X1A (L1, N, L3) Power supply L1, N, L3 X2A TR Pri. Transformer primary X3A TR. Sec Transformer secondary X4A TR Pri. Transformer primary X5A TR. Sec Transformer secondary X6A S1HP High pressure switch of circuit 1 X7A S2HP High pressure switch of circuit 2 X8A Q1D Discharge thermal protector of circuit 1 X9A Q2D Discharge thermal protector of circuit 2 X10A K4S (NC) Overcurrent relay of circuit 1 X11A K5S (NC) Overcurrent relay of circuit 2 X12A Q11F Thermal protector of fanmotor 1 of circuit 1 X13A Q12F Thermal protector of fanmotor 2of circuit 1 X14A Q21F Thermal protector of fanmotor 1 of circuit 2 X15A Q22F Thermal protector of fanmotor 2 of circuit 2 X16A Y1S Liquid solenoid valve X17A K1M Compressor contactor (coil) of circuit 1 NC contact of K1M X18A Y2S Liquid solenoid valve X19A K2M Compressor contactor (coil) of circuit 2 NC contact of K2M X21A M11F Fanmotor 1 of circuit 1 X22A M12F Fanmotor 2 of circuit 1 X23A M21F Fanmotor 1 of circuit 2 X24A M22F Fanmotor 2 of circuit 2 X27A S21P Switch for pump: Manual - Auto X28A K6S (NC) Overcurrent relay of pump X29A K1P Pump contactor X30A S10L Flow contactor X40A R6T Ambient temperature sensor X41A R7T Coil temperature sensor for circuit 1 X42A R8T Coil temperature sensor for circuit 2 X50A X2 (C1/2, No1, No2) To A1P µchiller compact X51A X2 (C3/4, No3, No4) To A1P µchiller compact (pump + reverse valve) Part 1 – System OutlineESiE04-03 Wiring Layout Connector Wiring diagram Description 1 symbol 3 X52A K1M NO contact of K1M 4 X53A K2M NO contact of K2M 5 X55A (G, GO) Power supply to µchiller compact X56A (N, L3) Power supply for evaporator heater tape X60A R3T Evaporator inlet water temperature sensor X61A R4T Evaporator outlet water temperature sensor X62A R5T Cond. inlet water temperature sensor X63A S4LP Low pressure switch circuit 1 X64A S5LP Low pressure switch circuit 2 X65A S10L Flow contact X66A X66A No use (shortcut) X70A X2 (C5, No5) To A1P (C5, No5) X71A X1 (B1, 2, 3, Gnd, To A1P X1 (B1, B2, B3, Gnd) (ID1, ID2, ID3, ID4, ID5, ID1, ID2, ID3, ID4, Gnd) X73A ID5, Gnd) X73A Serial communication X78A SER. X79A E3H Evaporator heater tape X80A E4H Evaporator heater tape X81A E6H Buffer heater X82A E1H Crankcase heater 1 X1M E2H Crankcase heater 2 (H3P, H4P, H5P, H6P, Connection for field wiring X2M Y3R) X3M (L, N, E5H) Field connection for option OP10 Evap. heater tape (G, Go (Option)) Field connection for option kit, EKAC10A (A3P) X5 S9S and fieldwiring X6 S7S X7 DONT CONNECT Reverse valve circuit 1 X8 VOLTAGE Reverse valve circuit 1 X9 Y1R Reverse valve circuit 2 X10 Y1R Reverse valve circuit 2 X11 Y2R To fan contactor circuit 1 Y2R To fan contactor circuit 2 X9 To earth X10 PE (GRN/YLW)Part 1 – System Outline 1–77Wiring Layout ESiE04-0311 Dipswitches and The illustration below shows the dipswitches and pushbuttons on the PCB. pushbuttons S1A S2A 1234 12 Function The table below describes the function of the dipswitches and pushbuttons on the PCB.3 S1A Dipswitch 1 S2A Dipswitch 24 1 0 = 1 circ. 1 Defrost setting (only for 1 = 2 circ. EUWY*5-24KAZW1) 0 = Start condition 1 & fan defrost 1 (5HP, 8HP, 16HP) 1 = Start condition 2A/B & fan defrost 2 (10HP, 12HP, 20HP, 24HP) 2 010 = EUWA 2 Fan setting 3 100 = EUWY (without defrost com- 0 = Fan setting 1 (5HP, 8HP, 16HP) 4 pressor stop) 1 = Fan setting 2 (10HP, 12HP, 20HP, 24HP) 101 = EUWY (with defrost compressor stop)5 The table below describes the LEDs. LED’s Symbol LED Meaning Blinking = CPU OK HAP Light emitting diode Not blinking = CPU NOK H1P (Service monitor - Green) - H2P Light emitting diode - (Service monitor - RED) Light emitting diode (Service monitor - RED)Status H1P and H2P The table below describes the status of H1P and H2P. Meaning H1P H2P No error OFF OFF Safety device ON OFF Reverse phase OFF ON Sensor broken ON ON1–78 Part 1 – System OutlineESiE04-03 Wiring Layout 1 3 4 5Part 1 – System Outline 1–79 Wiring Layout ESiE04-0311 3.5 Wiring Diagram: EUWA*5-24KAZW1 and EUWY*5-24KAZW1 Diagram Option: OP10 For AC5-12 For AC16-24 Only for units with buffertank3 Option kit: EKAC10B45 Only for Only for AC5-24 heatpump AC16-24 heatpump 1–80 Only for units with integrated pump to microchiller compact Addres card serial line to Only for AC16-24 to gateway cable shield Option kit: EKRUMC Remote user interface Defrost temp S2A Option kit: EKSS16/24K Option kit: EKSS 5/12K Only for AC16-24 Fuses Only for AC16-24 For AC5 Digital inputs Digital inputs Units with integrated pump (400V) X1 (ID1-GND) : flow switch Fuses DI1 Reverse phase detection (L1-N) X1 (ID2-GND) : Remote C/H selection Units without integrated pump (400V) DI2 Reverse phase detection (N-L3) X1 (ID3-GND) : high pressure switch + Fuses + DI3 M1C ON detection overcurrent All models (400V) DI4 M2C ON detection discharge protector + DI5 Safety device detection overcurrent (St. pump) DI6 Pump ON detection X1 (ID4-GND) : low pressure switch DI7 -- X1 (ID5-GND) : remote On/Off (OP pump high) DI8 -- (OP ZH/ZL) DI9 -- Digital outputs relays (OP pump high DI10 Reverse valve request X2 (C1/2-NO1) : compressor M1C on + OP ZH/ZL) X2 (C1/2-NO2) : compressor M2C on Digital outputs (relays) X2 (C3/4-NO3) : voltage free contact RY1 Reversed phase protector for pump RY3 Pump/general operation X2 (C3/4-NO4) : reversing valve RY4-24 Fan speed relay 1 X2 (C5-NO5) : alarm voltage free RY5-25 Fan speed relay 2 RY6 Heatertape contact RY7 Reversing valve circ1 RY8 Reversing valve circ2 Analog inputs RY9 M1C off (during defrost) X1 (B1-GND) : inlet water t° RY10 M2C off (during defrost) X1 (B2-GND) : outlet water t° RY12-22 Fan speed relay 3 X1 (B3-GND) : none RY27 reversing valve of water circuit Analog outputs Others X1 (Y-GND) : HAP light emitting diode (service monitor green) H1P, H2P light emitting diode (service monitor red) S1A dipswitch (unit setting) S2A dipswitch (defr. & fan setting) Part 1 – System Outline ESiE04-03 Wiring Layout 1For AC5-12 For AC5-12For AC16-24 For AC16-24 Only for 3 AC16-24 heatpump 4 5 Only for AC5-24 heatpumpnly for Only for 16-24HP For units with integrated pumpC16-24 heatpump For units without integrated pump Only for AC16-24 Defrost temp Unit S2A S1A Not standard included Not possible as option Poss. as option Obligatory Not obligatory ( ) Applicable for unit without integrated pump Only for AC16-24 Only for heatpump Y1R,Y2R Reverse valve circuit 1, circuit 2 X1-82(A/B/M) connectors TR2 transfo 230V -> 24V for supply of I/O PCB TR1 transfo 230V -> 24V for supply of controller PCB S21P switch for pump: Manual/Auto S12M main isolator switch S10L flowswitchAC16-24 S9S* switch for remote start/stop Digital inputs S7S* switch for remote cooling/heating selection X1 (ID1-GND) : flow switch X1 (ID2-GND) : Remote C/H selection S4LP,S5LP Low pressure switch circuit 1, circuit 2 X1 (ID3-GND) : high pressure switch + S1HP,S2HP high pressure switch circuit 1, circuit 2 discharge protector + overcurrent R7T,R8T coil temperature sensor for circuit 1, circuit 2 X1 (ID4-GND) : low pressure switch X1 (ID5-GND) : remote On/Off R6T ambient temperature sensor Digital outputs relays R4T evaporator outlet water temperature sensor X2 (C1/2-NO1) : compressor M1C on X2 (C1/2-NO2) : compressor M2C on R3T evaporator inlet water temperature sensor X2 (C3/4-NO3) : voltage free contact Q21F,Q22F thermal protector fan circuit 2 for pump X2 (C3/4-NO4) : reversing valve Q11F,Q12F thermal protector fan circuit 1 X2 (C5-NO5) : alarm voltage free Q1D,Q2D discharge thermal protecotr circuit 1, circuit 2 contact PE main earth terminal Analog inputs X1 (B1-GND) : inlet water t° Notes : M1P pump motor X1 (B2-GND) : outlet water t° X1 (B3-GND) : none Optional Pump contact for units M11F,M12F fan motors circuit 1 OP10 = Evaporator heatertape without integrated pump Analog outputs Terminal 1 EKAC10B = address card kit for BMS connections M21F,M22F fan motors circuit 2 X1 (Y-GND) : EKSS5/12K: softstarter for 5HP, 8HP, 10HP, 12HP S1A dipswitch: Unit setting Wire 2 EKSS16/24K: softstarter for 16HP, 20HP, 24HP 1 > Off = 1 circuit M1C,M2C compressor motor circuit 1, circuit 2 OP PUMP high = High Head pressur pump Field wiring to be in accordance with EKRUMC = remote user interface On = 2 circuit K1P (*) pumpcontactor the local electric regulations 234 > Off Off Off = WC CO & WC CL CO Earth wiring K6S (*) overcurrent relay pump Option Off On Off = AC CO On Off Off = AC HP (without compr stop for defrost cycle) K4S,K5S overcurrent relay circuit 1, circuit 2 On Off On = AC HP (with compr stop for defrost cycle) K1M,K2M compressor contactor circuit 1, circuit 2 H6P* indication lamp general operation H5P* indication lamp operation compressor 2 Terminals for fieldwiring H4P* indication lamp operation compressor 1 X1M: H3-6P Output terminal for fieldwiring H3P* indication lamp alarm (voltage free contact max 2A/Output) F3U fuse controller PCB X2M: E5H fieldheater (max 500W resistive / 230Vac / 50hz) X3M: S7S, S9S: Input terminal for fieldwiring (don’t connect voltage) F1U fuse I/O PCB (switch load 6mA / 30VDC) F7,F8 fuse for fan motor circuit 1, circuit 2 Y1R,Y2R are activated in cooling mode F6 (#) fuse for pumpcontactor F5 ## surge proof fuse F4 fuse I/O PCB & evaproator heatertape PCB F1,F2,F3 # main fuses for the unit Outside switchbox S7S open = heating E6H** buffertank (55l) heater If compressor rotates reversely, S7S closed = closed it may be damaged Defrost temp Unit E5H* field heater Dipswitch setting S2A S1A E3H,E4H** evaporator heatertype On E1H,E2H crankcase heater circuit 1, circuit 2 C1,C2,C3,C4 capapitors for fanmotors S2A dipswitch: Defrost & fan setting Off A7P** PCB: remote user interface A5P,A6P** PCB: softstarter for circuit 1, circuit 2 1 > Off = start condition 1 for defrost cycle (5HP, 8HP, 16HP) A3P** PCB: address card On = start condition 2 for defrost cycle (10HP, 12HP, 20HP, 24HP) A2P PCB: I/O PCB 2 > Off = fansetting 1 (5HP, 8HP, 16HP) On = fansetting 2 (10HP, 12HP, 20HP, 24HP) A1P PCB: controller PCB Part 1 – System Outline 1–81 Wiring Layout ESiE04-03113451–82 Part 1 – System OutlineESIE04-03 4 Part 2 Functional Description 2Introduction This part contains more detailed information on the functions and controls in the unit. This information 3 can be used as background information for troubleshooting. This part also contains an extensive overview of the functioning of the controllers. Knowledge of the controllers is indispensable for valuable information on servicing and troubleshooting.What is in this part? This part contains the following chapters: 4 Chapter 1–Functional Description See page 2–The Digital Controller 2–3 2–25 5Part 2 – Functional Description 2–1 ESIE04-0312352–2 Part 2 – Functional DescriptionESiE04-03 Functional Description1 Functional Description Part 2 1 21.1 What Is in This Chapter?Introduction This chapter contains information on the functions used to control the system. Understanding theseOverview functions is vital when diagnosing a malfunction that is related to the functional control. 3 This chapter contains the following topics: Topic See page 1.2–Operational Range: EUWA*5-24KAZW1 2–4 4 1.3–Operational Range: EUWY*5-24KAZW1 2–5 1.4–Operational Flow Chart 2–7 1.5–Compressor Working Status 2–8 1.6–Compressor Timers 2–9 1.7–Thermostat Control: EUWA*5-24KAZW1 and EUWY*5-24KAZW1 2–10 5 1.8–Head Pressure Control: EUWA*5-24KAZW1 and EUWY*5-24KAZW1 2–11 1.9–Fan Working: EUWA*5-24KAZW1 and EUWY*5-24KAZW1 2–13 1.10–Crankcase Heater 2–14 1.11–Evaporator Heater Tape Management: EUWA*5-24KAZW1 and 2–15 EUWY*5-24KAZW1 1.12–Pump Steering 2–16 1.13–Freeze-up Control: EUWA*5-24KAZW1 and EUWY*5-24KAZW1 2–17 1.14–Defrost Management for EUWY*5-24KAZW1 2–18Part 2 – Functional Description 2–3 Functional Description ESiE04-03 1.2 Operational Range: EUWA*5-24KAZW11 Operational range The illustration below shows the operational range of EUWA*5-24KAZW1. Outdoor temp. (°CDB)2 OPTION STANDARD34 ZH ZL STANDARD5 Water Glycol Legend Leaving evaporator water temp. (°C) The table below describes the patterns and abbreviations used in the operational range illustration above. Pattern/ Description Abbrevia- tion Standard operation Pull-down area Protection water circuit against freezing If the units operate below -5°C and are installed in a draughty space, a windscreen is required ZH Option to produce evaporating leaving water temperature till -5°C ZL Option to produce evaporating leaving water temperature till -10°C 2–4 Part 2 – Functional DescriptionESiE04-03 Functional Description1.3 Operational Range: EUWY*5-24KAZW1 1 2Operational range The illustration below shows the operational range in cooling mode of the EUWY*5-24KAZW1.in cooling mode Outdoor temp. (°CDB) OPTION STANDARD 3 ZL ZH STANDARD 4 Water Glycol 5 Leaving evaporator water temp. (°C)Operational range ;; The illustration below shows the operational range in heating mode of the EUWY*5-24KAZW1.in heating modePart 2 – Functional Description 2–5 Functional Description ESiE04-031 Legend The table below describes the patterns and abbreviations used in the operational range illustration2 above.34 Pattern/ Description Abbrevia- tion Standard operation Pull-down area Protection water circuit against freezing If the units operate below -5°C and are installed in a draughty space, a windscreen is required ZH Option to produce evaporating leaving water temperature till -5°C ZL Option to produce evaporating leaving water temperature till -10°C5 2–6 Part 2 – Functional DescriptionESiE04-03 Functional Description1.4 Operational Flow Chart 1 2Flow chart The flow chart below describes the operation of EUWA*5-24KAZW1. Power ON Start cooling 3 Thermostat control 4 StopFlow chart The flow chart below describes the operation of EUWY*5-24KAZW1. 5 Power ON Start in cooling Start in heating Thermostat control StopPart 2 – Functional Description 2–7 Functional Description ESiE04-031 1.5 Compressor Working Status23 Compressor The table below gives the conditions of the compressor status. working status The compressor is ON when... The compressor is OFF when... The ON button is pressed The OFF button is pressed AND OR Thermostat ON Thermostat OFF AND OR No safety activation Safety activation45 2–8 Part 2 – Functional DescriptionESiE04-03 Functional Description1.6 Compressor Timers 1 2Compressor timers The table below shows the timers of the compressor. 3 Timer Interval (s) Use Guard timer 60 The timer starts counting down when the scroll compressor is switched OFF. Anti-recycling 240 During the countdown the compressor can not be restarted. timer The timer starts counting down when the scroll compressor is switched ON. During the countdown the compressor can not be restarted. 4 5Part 2 – Functional Description 2–9 Functional Description ESiE04-031 1.7 Thermostat Control: EUWA*5-24KAZW1 and EUWY*5-24KAZW123 Functional diagram The illustration below shows the thermostat control of 5-12HP. r1: Cooling set point 5-12HP (default 12°C) Compressor ON r3: Heating set point OFF (default 30°C) only for EUWY*5-24KAZW1 r1 r3 12°C r2 15°C 27°C 30°C Inlet water temperature r4 evap. (°C) Step difference Step difference Functional diagram The illustration below shows the thermostat control of 16-24HP. 16-24HP Compressor r1: Cooling set point (default 12°C)4 ON Compressor 2 r3: Heating set point (default 30°C) OFF only for ON EUWY*5-24KAZW1 Compressor 1 r3 OFF r1 12°C 13.5°C 15°C 27°C 28.5°C 30°C Inlet water temperature r2 r4 evap. (°C)5 Step Step difference difference Controller The table below describes the step difference. Description Lower limit Upper limit Step Default 0.1 3.0 r2 and/or r4: Step difference (°C) 0.3 19.9 2–10 Part 2 – Functional DescriptionESiE04-03 Functional Description1.8 Head Pressure Control: EUWA*5-24KAZW1 and EUWY*5-24KAZW1 1 2Functional ■ The chillers are equipped with a fan control to limit the high pressure when the ambient 3description temperature is low. ■ Each circuit (K4A, K5A and K12A) has the same functionality.Fan management in The illustration below shows the fan management in cooling mode.cooling mode Fanstep 3 Fanstep 2 Fanstep 1 T1 T2 T3 T4 TambientFan relay The table below describes the fan relay management in cooling mode.management incooling mode Fan Fan Fan Result 4 relay 1 relay 2 relay 3 RY4/RY24 RY5/RY25 RY12 For units with 2 cir- cuits and fans Fanstep 1 Open Closed Open M11F: M12F: M21F: M22F: medium OFF medium OFF 5 Fanstep 2 Closed Open Open M11F: M12F: M21F: M22F: high OFF high OFF Fanstep 3 Closed Open Closed M11F: M12F: M21F: M22F: high high high highFan motor The operation of the fan motors depends on the ambient temperature. The table below contains theoperation fan settings for different ambient temperatures. Fan setting 1 (5HP, 8HP, 16HP) Tambient Fan setting 2 (10HP, 12HP, 20HP, 24HP) T1 5°C -4°C T2 7°C -2°C T3 17°C 15°C T4 19°C 17°CSelection of fan Fan setting 1 or Fan setting 2 is selected by dipswitch S2A number 2:setting ■ OFF = fan setting 1 ■ ON = fan setting 2Part 2 – Functional Description 2–11 Functional Description ESiE04-031 Fan relay The table below describes the fan relay management in heating mode. This is only valid for the heat management in pump (EUWY*5-24KAZW1). heating mode Fan relay 1 Fan relay 2 Fan relay 3 Result RY4/RY24 RY5/RY25 RY12 For units with 2 circuits and fans2 Fans Closed Open Closed M11F: M12F: M21F: M22F: high high high high345 2–12 Part 2 – Functional DescriptionESiE04-03 Functional Description1.9 Fan Working: EUWA*5-24KAZW1 and EUWY*5-24KAZW1 1 2Working principle The fan runs parallel with the compressor operation. The operation is not steered by the microchiller controller but by the I/O PCB. See “Head Pressure Control: EUWA*5-24KAZW1 and EUWY*5-24KAZW1” on page 2-11. 3 4 5Part 2 – Functional Description 2–13 Functional Description ESiE04-03 1.10 Crankcase Heater1 Functional The crankcase heater should always work when the compressor is in the OFF status. The crankcase description heater should be used with compressors in order to avoid that refrigerant is dissolving in the compressor oil during standstill.2345 2–14 Part 2 – Functional DescriptionESiE04-03 Functional Description1.11 Evaporator Heater Tape Management: EUWA*5-24KAZW1 and 1EUWY*5-24KAZW1Functional The evaporator heater tape management protects the evaporator (and field piping) against freezing.description When the compressors 1 and 2 are switched off and the ambient temperature is low, then theHeater tapemanagement evaporator heater, field heater and buffertank heater (K6A) are switched on. If a single circuit is selected, only detect on compressor 1 (based on S1Adip). 2 The illustration below shows the heater tape management. Heater tape OFF 3 Heater tape ON 3°C 6°C TambientHeater tape control The I/O board controls the function of the evaporator heater tape. No separate power supply is 4 foreseen for the evaporating heater tape. When the main switch is switched off, the heater tape has no power and does not work. The heater tape will be activated if... The heater tape will be deactivated if... ■ The ambient temperature is lower or equal ■ The ambient temperature is higher or equal 5 then 3°C. then 6°C. ■ And the status of the compressor is OFF. ■ And the status of the compressor is ON.Illustration heater The illustration below shows the evaporator heater tape management.tape management R6T : Ambient DI3: M1C Evaporator RY6: Heater tape detection heater tape management DI4: M2C detectionPart 2 – Functional Description 2–15 Functional Description ESiE04-03 1.12 Pump Steering1 Pump steering A pumpcontact should be present with pumplead (15 s) and pumplag (0 s) timers taken into account.2345 2–16 Part 2 – Functional DescriptionESiE04-03 Functional Description1.13 Freeze-up Control: EUWA*5-24KAZW1 and EUWY*5-24KAZW1 1Functional The freeze-up control is a protection against ice formation in the water circuit at the evaporator outlet.descriptionCharacteristics The table below contains the characteristics of the freeze-up protection. 2 3 Characteristics Freeze-up protection 4 5 Control device Sensor Diagram name Activation R4T Reset Outlet water temperature < 4°C Result: The unit is disabled. Manually on controller if temperature > 7.5°C (4°C + anti-freeze hysteresis). Result: The circuit restarts.Characteristics for The table below contains the characteristics of the freeze-up protection for the glycol option.glycol option ZL Activation Outlet water temperature < -11.5°C Reset Manually on controller if temperature > -8°C (-11.5°C + anti-freeze hysteresis). ZH Activation Outlet water temperature < -6.5°C Reset Manually on controller if temperature > -3°C (-6.5°C + anti-freeze hysteresis).Part 2 – Functional Description 2–17 Functional Description ESiE04-031 1.14 Defrost Management for EUWY*5-24KAZW123 Functional The characteristics of the defrost management are the following:4 description ■ The defrost function is only active in heating mode. ■ The defrost cycle can only be performed if the compressor is on. ■ When a defrost cycle is active in a circuit, the reversing valve of that circuit is switched. ■ When a defrost cycle is active, all the fans in circuit 1 and circuit 2 are switched off or run on medium speed. ■ The defrost function is executed in the I/O PCB and “d1” or “r1” is displayed on the controller PCB (d1 = defrost is busy, r1 = normal defrost cycle failed). ■ If the defrost function for circuit 1 is active, circuit 2 is stopped by opening DO10. ■ If the defrost function for circuit 2 is active, circuit 1 is stopped by opening DO9. ■ If an “r1” indication is displayed on the controller PCB, a manual defrost can be requested by pressing SEL&UP for 5 s. ■ Priority: when the defrost function is activated for the 2 circuits, only one of the circuits will alternately be defrosted. Illustration The illustration below shows the defrost dipswitches on the PCB. dipswitches S2A S2A 125 The table below describes the function of the dipswitches on the PCB. Function dipswitches S2A S2A Dipswitch 1 Defrost setting 0 = Start condition 1 & fan defrost 1 (5HP, 8HP, 16HP) 1 = Start condition 2A/B & fan defrost 2 (10HP, 12HP, 20HP, 24HP) 2 Fan setting 0 = Fan setting 1 (5HP, 8HP, 16HP) 1 = Fan setting 2 (10HP, 12HP, 20HP, 24HP) 2–18 Part 2 – Functional DescriptionESiE04-03 Functional DescriptionFan status during The table below shows the fan status during defrost. 1defrost 2 3Fan defrost Fan status K4A K5A K12A 4setting Open OpenFan defrost 1 ■ M11F: OFF Open DependingFan defrost 2 ■ M12F: OFF Open on ■ M21F: OFF Open ■ M22F: OFF dipswitch Tamb at defrost start time = > 5°C ■ M11F: Medium Closed Open ■ M12F: OFF Tamb at defrost start time ■ M21F: Medium Open Open < 5°C ■ M22F: OFF (1) ■ M11F: OFF ■ M12F: OFF ■ M21F: OFF ■ M22F: OFF (1) (1): This fan status is kept during the complete defrost cycle, independent from Tamb changes.Illustration start The illustration below shows the start conditions and defrost activition ranges for the defrost function. 5condition Max. 50°C Tcoil (°C) A °C (5=°C) (= basic no limit) 0 -1 Start condition 2B (Accumulate Timoperate) Tambient (°C) -8 Start condition 1 & 2A (Reset Timconditional) -10 Start condition 1 & 2A (Start Timconditional)Legend start The table below describes the patterns used in the start condition illustration above.condition Pattern Description Defrost activation range of start condition 2B After defrost allowed timer (= 30 min + 2 h acc) Defrost activation range of start condition 2B Without allowed timer (= 2 h acc) Defrost activation range of start condition 1/2A Without allowed timer (= 150 s) Defrost activation range of start condition 1/2A After defrost allowed timer (= 30 min + 150 s)Part 2 – Functional Description 2–19 Functional Description ESiE04-031 Starting defrost The table below describes the start conditions for the defrost function. function Start condition 1 TcoilC1/2 < 0.6 x Tamb -10 TimConditional Depending AND on2 TimConditional TcoilC1/2 < -10°C dipswitch AND A = 5°C3 TimConditional Tamb < 50°C4 Start condition 2 AND Start condition 2A: TimCompMin5 TcoilC1/2 < 0.6 x Tamb t-10 A = 5°C AND TcoilC1/2 < -10°C AND Tamb < 50°C AND { (Tamb ≥ A°C) OR (1st Defr allow 1/2=1) } Start condition 2B: TcoilC1/2 < 0.6 x Tamb -1 AND TcoilC1/2 < -1°C AND Tamb < 50°C AND { (Tamb ≥ A°C) OR (1st Defr allow 1/2=1) } Terminating defrost The table below describes the terminating conditions for the defrost function. B = 5°C function { (Tamb at defrost start time ≥ B°C) AND (TcoilC1/2 > +20°C) } Stop condition 1 OR Stop condition 2 { (Tamb at defrost start time < B°C) AND (TcoilC1/2 > +10°C) } After Timdefrost 2–20 Part 2 – Functional DescriptionESiE04-03 Functional DescriptionDefrost starting The table below describes the timers important to start the defrost cycle. 1timers 2 3Timer Description Steps and conditions Start- 4 value 5TimConditional 1/2 The minimum time that the defrost start ■ Start of timer 150 s condition 1 or 2A must be met to start the defrost cycle. Coil & Ambient below start condition 1 or 2A AND Compressor on by thermostat (DI3/4 M1/2Cdetect = closed) ■ Reset of timer (no requests) Coil & Ambient above start condition 1 or 2 with differential of +2°C on coil temperature OR Compressor switched off by thermostat (DI3/4 M1/2Cdetect = open) ■ End of timer (goes to 0) Then defrost requests startTimOperate1/2 The minimum time that the defrost ■ Start or continue timer 2h condition 2B must be met to start the defrost cycle. This timer is accumulated Coil & Ambient below start condition 2B time. AND Compressor on by thermostat (DI3/4 M1/2Cdetect = closed) ■ Stop of timer Coil & Ambient above start condition 2B OR Compressor switched off by thermostat (DI3/4 M1/2Cdetect = open) ■ Reset of timer (no requests) Switch off unit (DI6PumpDetect = open)TimComprMin1/2 The minimum time that the compressor ■ Start of timer 20 s must be switched on before the circuit can start the defrost cycle. Compressor switched on by thermostat (DI3/4 M1/2Cdetect = closed) ■ Reset of timer (no requests) Compressor switch off by thermostat (DI3/4 M1/2Cdetect = open) End of TimOperate1/2 AND TimComprMin timer (goes to 0): Then defrost requestPart 2 – Functional Description 2–21 Functional Description ESiE04-031 Timer Description Steps and conditions Start-2 Tim 1st Defr 1/2 value3 The minimum time that the compressor ■ Start of timer 30 min4 must be switched on before the circuit5 can start the defrost cycle if the ambient Compressor switched on by thermostat 15 min temperature is under A°C. (DI3/4 M1/2Cdetect = closed) AND 1st Defr allow 1/2=0 ■ Reset of timer Compressor switched off by thermostat (DI3/4 M1/2Cdetect = open) Tim 1st Defr_reset The minimum time that the compressor ■ Start of timer 1/2 must be switched off before the circuit can reset “1st Defr allow 1/2”. Compressor switched off by thermostat (DI3/4 M1/2Cdetect = open) AND 1st Defr allow 1/2=1 ■ Reset of timer Compressor switched on by thermostat (DI3/4 M1/2Cdetect = closed) Defrost cycle timers The table below describes the timers that are importanstet in the defrost cycle. Timer Description Startvalue TimdefrMin The minimum time that a defrost cycle must be active. 10 s TimDefrMax (The timer only starts to count when the compressor is on.) 10 min TimMask 20 min TimComprStop The maximum time that a defrost can be active. 20 s TimComprStart (The timer only starts to count when the compressor is on.) 5s 1st defrost __ The minimum time interval between the stop of a defrost cycle and the start of the 1st Defr allow 1/2 next defrost cycle. 30 min The time interval that is used if the compressors stops, at the start and stop of the defrost function. The minimum time interval that is used between the start-up of compressor 1 and compressor 2. The first defrost that follows: After a compressor OFF-period of 15 min OR After a power OFF-ON of an unit. Below an ambient temperature of A°C, the unit is only allowed to go into 1st defrost after Tim1stDefr1/2. 2–22 Part 2 – Functional DescriptionESiE04-03 Functional DescriptionIllustration The illustrations below show the defrost cycle without and with compressor stop during the defrost 1compressor stop cycle. 2function 3 Start TimDefrMin Start TimDefrMask Start TimDefrMax Defrost cycle Defrost Yes BusyC1 No ON Compr. OFF DORev ON Valve OFF Time Start TimDefrMin Defrost cycle Start TimDefrMask Start TimDefrMax 4 Defrost Yes BusyC1 No 5 ON Time Compr. OFF DORev ON Valve OFFDefrost cycles and The table below describes the minimum and maximum defrost cycles without and with compressorcompressor stop stop.function Without compressor Minimum cycle 10 s TimdefrMin stop Maximum cycle 10 min TimDefrMax With compressor stop Minimum cycle 130 s TimComprStopx4 + TimdefrMin Maximum cycle 12 min TimComprStopx4 + TimDefrMaxPart 2 – Functional Description 2–23 Functional Description ESiE04-03123452–24 Part 2 – Functional DescriptionESiE04-03 The Digital Controller2 The Digital Controller Part 2 1 22.1 What Is in This Chapter?Introduction This chapter contains information on the digital controller EUWA*5-24KAZW1 andOverview EUWY*5-24KAZW1. 3 This chapter contains the following topics: Topic See page 2.2–The Digital Controller 2–26 4 2.3–Start/Stop 2–28 2.4–What Happens in Case of an Alarm or a Warning 2–30 2.5–Settings: Direct and User Parameters 2–31 2.6–Reading or Adjusting Parameter Settings: the Programming Procedure 2–33 5Part 2 – Functional Description 2–25 The Digital Controller ESiE04-031 2.2 The Digital Controller2 Digital controller EUWA*5-24KAZW1 and EUWY*5-24KAZW1 units are equipped with a digital controller offering a user-friendly way to configure, use and maintain the unit. The digital controller consists of: ■ A numeric display ■ 4 keys ■ 4 LEDs, used to provide extra user information. Each key, except for the s key, combines two functions. The function of a key depends on the status of the controller and the unit.3 Front panel The illustration below shows the front panel of the controller. comp PRG mute4 clear SEL x 100 Keys The table below contains an overview of the keys and their functions.5 Key Function p ■ To enter the scroll list of parameters (press for 5 s). ■ To save a parameter modification. ■ To return to normal operation. m ■ To deactivate the buzzer in case of an alarm. u ■ To scroll up through the list of direct/user parameters. h ■ To increase a parameter value. c ■ To switch the unit ON in heating mode (press for 5 s) (only for heat pumps). d ■ To switch the unit OFF when heating mode is active (press for 5 s) (only for s ps heat pumps). su ■ To switch the unit ON in cooling mode (press for 5 s). ■ To switch the unit OFF when the cooling mode is active (press for 5 s). ■ To scroll down through the list of direct/user parameters. ■ To decrease a parameter value. ■ To enter the scroll list of direct parameters (press for 5 s). ■ To toggle between a parameter’s name and its value. ■ To enter the scroll list of factory parameters (press for 5 s), after 5 s the password for factory parameters is requested. ■ After 5 s, the manual defrosting cycle is activated (only for heat pumps). ud ■ After 5 s, the manual alarms are reset. 2–26 Part 2 – Functional DescriptionESiE04-03 The Digital ControllerLEDs Key Function 1 2 p ■ The default parameters are written after pressing this key and then powering the unit. pu ■ The key is copied into the unit EEPROM after pressing both keys and then powering the unit (1). (1): The initialisation key can be bought as a spare part. There is one type for all micro controllers. You have to program it yourself by configuring the settings you want on a micro controller, and then copying these settings into the key. As soon as you have done this, you can copy the settings to other micro controllers. The table below contains an overview of the LEDs and their functions. 3 LED Function The compressor is inactive. Although extra load is requested, the compressor cannot start up. 4 The compressor is active. Heating mode is active (only for heat pump). Cooling mode is active. 5 The value on the numeric display should be multiplied by 100. Can be used as service indication (parameter cb). See 'cb' on page 2–31. With: Description Item Flashing ON OFFPart 2 – Functional Description 2–27 The Digital Controller ESiE04-03 2.3 Start/Stop1 At power ON When the power is ON, the display shows the inlet water temperature. Start/stop ■ Press c for 5 s to start or stop in cooling mode. ■ Press hfor 5 s to start or stop in heating mode (only for heat pump).2 Remote start/stop, The procedure to start or stop the unit depends on the setting of the remote start/stop. See 'Start/Stop' remote cool/heat on page 2–28. The procedure to cool or heat (only for EUWY*5-24KAZW1) depends on the setting of the remote3 cool/heat. See 'Settings: Direct and User Parameters' on page 2–31. Start/stop and The table below contains information on how to select start or stop or how to select cooling or heating cool/heat selection mode. for EUWY*5-24KAZW1 If start/stop and cool/heat , then... to... set-up is... set-up is...4 Local (h7=0) Local (h6=0) Press c for 5 s Start/stop in cooling mode. Always stop the unit before you switch to cooling because start/stop and cool/heat are combined in the same button.5 Press h for 5 s Start/stop in heating mode. Always stop the unit before you switch to cooling because start/stop and cool/heat are combined in the same button. Remote (h7=1) Local (h6=0) Press c for 5 s Cool. Press h for 5 s Heat. Switch remote start/stop Start/stop. Remote (h7=1) Remote (h6=1) Switch remote start/stop Start/stop. Switch remote cool/heat Cool/heat. Local (h7=0) Remote (h6=1) Switch remote cool/heat Switch on the unit automatically . Only cool/heat selection is possible. Setting the Use the u and d keys to adjust the water temperature. temperature 2–28 Part 2 – Functional DescriptionESiE04-03 The Digital ControllerWhen you switch When you switch the unit ON, the following happens: 1the unit ON 2 Stage Description 1 ■ The o LED starts flashing, indicating that the initialization cycle is started. ■ The c LED or the h LED lights up, indicating whether the cooling or the heating mode is selected (heating mode only for EUWY*5-24KAZW1). 2 When initialization is completed, the unit starts and the o LED lights up permanently. The numeric display shows the actual inlet water temperature. 3 4 5Part 2 – Functional Description 2–29 The Digital Controller ESiE04-031 2.4 What Happens in Case of an Alarm or a Warning23 Alarms and The table below describes two types of safety devices:4 warnings Item Alarm Warning Function Protects the unit. Gives additional service information. Description The display starts flashing, alternately ■ The unit is shut down. showing the warning code and the inlet Action to water temperature. take ■ The buzzer is activated. — ■ The alarm is energized. ■ The display starts flashing, alternately showing the alarm code(s) and the inlet water temperature. Press m to deactivate the buzzer. See 'Malfunction Indications Over- view: EUWA*5-24KAZW1 and EUWY*5-24KAZW1' on page 3–8.5 2–30 Part 2 – Functional DescriptionESiE04-03 The Digital Controller2.5 Settings: Direct and User Parameters 1 2Direct and user The table below describes the direct and user parameters.parameters Parameters Description Example Direct Are used for the daily usage of ■ To set the cooling temperature set point. User the unit. ■ To read the operational information. Remote control Provide advanced features.How to access the To access the parameters, proceed as follows:parameters 3 To access the… parameters Press 5 s on… A password is… Direct s Not required. Direct and user p Required. Use 22 as password.Overview of the The table below contains an overview of all the parameters. Each parameter is defined by a code and 4parameters a value. Default ValueCode Description Type Limit values Step value EUWA*5- EUWY*5- 5 24KAZW1 24KAZW1:d Measurement unit (°C or °F) User 0°C 0°C 0 or 1 1r1 Cooling temperature set point Standard Direct 12.0°C 12.0°C 7.0 to 25.0°C 0.1°C ZL option -7.0 to 25.0°C ZH option -2.0 to 25.0°Cr2 Cooling temperature difference Direct 3.0°C 3.0°C 0.3 to 19.0°C 0.1°C 30.0°C 0.1°Cr3 Heating temperature set point Standard Direct — 25.0 to 48.0°C ZL option ZH optionr4 Heating temperature difference Direct — 3.0°C 0.3 to 19°C 0.1°C Direct Read-only Read-only — 0.1r6 Outlet water temperaturec7 Time delay between the pump start-up and the User 15 s 15 s 0 to 150 s 1s compressor start-upc8 Time delay between the pump shutdown and the User 0 min 0 min — — compressor shutdownc9 (1) Total running hours of the Direct Read-only Read-only — 1h compressor 1ca(1) Total running hours of the Direct Read-only Read-only — 1h compressor 2cb Maintenance threshold of c9 User 0 (Read- 0 (Read- 0 to 10000 h 100 h only) only)Part 2 – Functional Description 2–31 The Digital Controller ESiE04-031 Code Description Type Default Value Limit values Step2 value3 EUWA*5- EUWY*5-4 24KAZW1 24KAZW15 cv (1) Total running hours of the pump Direct Read-only Read-only — — p4 Activation period of the buzzer User 1 min 1 min ■ 0 min: 1 min h6 Remote cool/heat buzzer h7 Remote start/stop User 0 0 disabled 1 h8 No. of terminals User 0 0 1 h9 (2) Controller keyboard lock User 0 0 ■ 1-14 min: 1 buzzer activation period ■ 15 min: buzzer activated until m button is pressed 0 or 1 0 or 1 0 or 1 User 1 1 0: Locked 1 1: Unlocked ha Unit’s serial address User 1 1 1 to 199 1 hb Remote control password User 1 1 — 1 hg Software release version User 1.5 (Read- 1.5 (Read- — — only) only) (1): c9 and ca and cv can be reset. (2): To unlock the keyboard, see 'Unlocking the Keyboard' on page 3–27. When you lock the keyboard, the following advanced functions are unavailable: ■ Modifying direct and user parameters (parameters can be displayed but not modified) ■ Selecting cooling mode ■ Resetting the timers. Adjusting settings To adjust settings, see 'Reading or Adjusting Parameter Settings: the Programming Procedure' on page 2–33. 2–32 Part 2 – Functional DescriptionESiE04-03 The Digital Controller2.6 Reading or Adjusting Parameter Settings: the Programming Procedure 1 2Introduction ■ When no buttons are pressed for 5 s, the display starts flashing. ■ You can exit at every step by leaving the buttons untouched for 1 min. The modifications are notReading oradjusting saved. To read or adjust parameter settings, proceed as follows: Start Do you want access to all parameters? No Yes 3 Press p for 5 s. Press s for 5 s to access only direct parameters. Enter the user password 22 with the u and d keys. 4 Press s. Select the parameter using the u and d keys. 5 Press s to display the value. No Do you want to adjust the value? Yes Adjust the value using the u and d keys. Press s to display the parameter. Do you want to select another parameter? Yes No Press p to save and exit. StopPart 2 – Functional Description 2–33 The Digital Controller ESiE04-03123452–34 Part 2 – Functional DescriptionESIE04-03 4 Part 3 TroubleshootingIntroduction The small water chillers EUWA*5-24KAZW1 and EUWY*5-24KAZW1 are equipped with a µchiller 33 controller and an I/O (input/output) PCB. These PCB’s use the information gained from the input signals to control the output signals. If the unit is not performing properly, first check the input devices, then the PCB’s and finally the output devices.What is in this part? This part contains the following chapters: 4 Chapter 1–Inputs and Outputs Overview See page 2–Malfunction Indications and Safeties Overview 3–Checking the Inputs and Outputs 3–3 4–Troubleshooting 3–7 3–13 5 3–23Part 3 – Troubleshooting 3–11 ESIE04-0333 Part 3 – Troubleshooting5 3–2ESiE04-03 Inputs and Outputs Overview1 Inputs and Outputs Overview Part 3 11.1 What Is in This Chapter?Introduction The first step in a troubleshooting procedure is to check the inputs and outputs. 33Overview This chapter contains an overview of the inputs and outputs. 4 This chapter contains the following topics See page 3–4 Topic 3–5 1.2–Inputs and Outputs Overview: EUWA*5-24KAZW1 and EUWY*5-24KAZW1 1.3–Inputs/outputs overview of the I/O PCB: EUWA*5-24KAZW1 and EUWY*5-24KAZW1 5Part 3 – Troubleshooting 3–3 Inputs and Outputs Overview ESiE04-031 1.2 Inputs and Outputs Overview: EUWA*5-24KAZW1 and EUWY*5-24KAZW133 Inputs/outputs The table below describes the relation between the wiring diagram symbols, the wiring connections4 and the error codes.5 For the exact location, see: ■ 'PCB Layout of the EUWA*5-24KAZW1 and EUWY*5-24KAZW1' on page 1–75. ■ 'Wiring Diagram: EUWA*5-24KAZW1 and EUWY*5-24KAZW1' on page 1–79. Type Device Wiring Wiring con- Error code Description diagram nection symbol terminal Analog Sensor R3T X1/B1-GND e1 - a1 Inlet water temperature sensor input e2 (r6) Outlet water temperature sensor Digital input Trans- R4T X1/B2-GND h1 Overcurrent relay + high pressure switch + ducer K4S + S1HP X1/ID3-GND discharge protector + QID l1 Control K5S + S2HP X1/ID4-GND (h7) Low-pressure switch contacts + Q2D X1/ID5-GND (h6) Switch for remote start/stop S4LP/S5LP X1/ID2-GND (fl) Switch for remote cool/heat selection Digital out- — S9S (field) X1/ID1-GND — Flow switch put S7S (field) X2C1/2-NO1 — Compressor 1 contactor S10L X2C1/2-NO2 — Compressor 2 contactor K1M X2C3/4-NO3 — Pump contactor K2M X2C3/4-NO3 — Reversing valve K1P (field) X2C5-NO5 Indication lamp alarm Y1R/Y2R H1P (field) 3–4 Part 3 – TroubleshootingESiE04-03 Inputs and Outputs Overview1.3 Inputs/outputs overview of the I/O PCB: EUWA*5-24KAZW1 and 1 EUWY*5-24KAZW1Digital inputs to I/O The table below describes the digital inputs to the I/O PCB.PCB Description Output from Output Open = 0 Closed = 1 digital controller controllerDI1 Reversed phase detection (L1-N)DI2 Reversed phase detection (N-L3)DI3 M1C detection X C1/2NO1 M1C status = OFF M1C status = ON 33 C1/2NO2 4DI4 M2C detection X C5-NO5 M2C status = OFF M2C status = ONDI5 Safety devices detection X C1/2-NO3 No alarm present Alarm present C1/2-NO4DI6 Pump detection Pump status = Pump status = ON OFFDI9 Pump request X Request to switch Request to switch off pump on pumpDI10 Reverse valve request X Request to switch Request to switch the pump off the pump offDigital outputs to The table below describes the digital outputs to the I/O PCB. 5I/O PCB Description Wiring Input Not active = 0 Active = 1 Normal diagram to open/ symbol digital normal con- closed trollerDO1 Reversed phase protector RY1 X RPP alarm RPP alarm NODO3 Pump/general operationDO4 Fan speed relay 1 RY3 Pump off Pump on NO RY4-24 Fan speed relay Fan speed relay NO off onDO5 Fan speed relay 2 RY5-25 Fan speed relay Fan speed relay NO off onDO6 Heater tape RY6 ON OFF NODO7 Reversing valve (circuit 1) or RY7 reversing valve of water circuit OFF (heating) ON (cooling) NODO8 Reversing valve (circuit 2) RY8DO9 M1C off (during defrost) RY9 OFF (heating) ON (cooling) NODO10 M2C off (during defrost) RY10DO12 Fan speed relay 3 RY12-22 M1C OFF Not (M1C off) NO M2C OFF Not (M2C off) NO Fan speed relay Fan speed relay NO off onDO27 Reversing valve of water circuit RY27 Reverse valve off Reverse valve on NOPart 3 – Troubleshooting 3–5 Inputs and Outputs Overview ESiE04-031 Analog inputs The table below describes the analog inputs. EUWA EUWY 1 circ 2 circ 1 circ 2 circ X X AI1 R6T Ambient sensor X X X X X AI2 R7T Coil temperature sensor circuit 1 AI3 R8T Coil temperature sensor circuit 23345 3–6 Part 3 – TroubleshootingESiE04-03 Malfunction Indications and Safeties Overview Part 3 12 Malfunction Indications and Safeties Overview2.1 What Is in This Chapter?Introduction The malfunction indication on the digital controller display helps you to find the cause of the problem. 33Overview This chapter describes the malfunction indications and the safeties. This chapter contains the following topics: See page Topic 3–8 4 2.2–Malfunction Indications Overview: EUWA*5-24KAZW1 and 3–10 EUWY*5-24KAZW1 2.3–Safeties Overview: EUWA*5-24KAZW1 and EUWY*5-24KAZW1 5Part 3 – Troubleshooting 3–7 Malfunction Indications and Safeties Overview ESiE04-031 2.2 Malfunction Indications Overview: EUWA*5-24KAZW1 and EUWY*5-24KAZW133 Alarm and warning The following alarm and warning codes may appear on the screen:4 codes5 Code Description Alarm or Reset See page warning a1 The anti-freeze alarm has been activated. Alarm Manual 2–30 d1 Automatic e1 The unit is carrying out a defrost cycle (only for EUWY*5-24KAZW1). Warning Automatic 3–14 e2 Automatic 3–14 e3 NTC probe used to measure the inlet water temperature is defective. Alarm Automatic ee/ep Automatic 1–72 fl NTC probe used to measure the outlet water temperature is defective. Alarm Manual 2–34 h1 The fuse for evaporator heater tape is blown or there is a reverse Alarm Manual — phase error or there is a problem with the I/O PCB (A2P). l1 Manual — n1 EEPROM on the digital controller inside the unit is defective. Alarm Manual 3–8 n2 No water flow for: Alarm Manual 3–8 ■ 15 s after the pump was started, or r1 ■ 5 s while the compressor is active. Manual e0 Automatic — ei The high-pressure switch, the discharge thermal protection or the over- Alarm Automatic — el current protection of the compressor motor is activated or NTC probe Automatic — vn to measure the ambient temperature is defective. Automatic — The low-pressure switch is activated. Alarm The compressor requires maintenance. The total running hours of the Warning compressor (direct parameter c9) has exceeded the setting of the timer threshold for maintenance warning (user parameter cb —see 'How to access the parameters' on page 2–31). The compressor requires maintenance. The total running hours of the Warning compressor (direct parameter ca) has exceeded the setting of the timer threshold for maintenance warning (user parameter cb —see 'How to access the parameters' on page 2–31). The period foreseen for defrost has elapsed but the process of Warning defrosting is not completed (only for EUWY*5-24KAZW1). Voltage is too high. Alarm Voltage is too low. Alarm Noise of power supply Alarm Error in the communication with the remote terminal. Alarm What happens in In the event of an alarm or a warning, the following happens: the event of an alarm or a warning Alarm Warning ■ The unit is shut down. The display starts flashing, alternately ■ The buzzer is activated. showing the warning code and the inlet ■ The alarm relay is energized. water temperature. ■ The display starts flashing, alternately showing the alarm code(s) and the inlet water temperature. 3–8 Part 3 – TroubleshootingESiE04-03 Malfunction Indications and Safeties OverviewWhat to do in the ■ In the event of automatic reset, the system restarts automatically. 1event of an alarm ■ In the event of manual reset, proceed as follows: Step Action Result 1 Press m. The buzzer stops. 2 Find the cause of the alarm and correct it. The system has been repaired. 3 Reset the alarm manually by pressing the The controller continues its normal opera- u and d key simultaneously for ± 5 s. tion, displaying the inlet water temperature.Resetting warning To reset warning code n1, proceed as follows: 33code n1 4 5 Step Action 1 Enter the list of direct parameters by pressing the s key for ± 5 s. The parameter code r1 appears on the display. 2 Select parameter c9 using the u and d key. 3 Press the s key to choose the parameter and to switch to the parameter value. 4 Press the u and d key simultaneously for approximately 5 s. The timer’s value resets to 0. 5 Press the s key to return to parameter code c9. 6 Press the p key to return to normal operation. ■ After resetting the timer, carry out the required maintenance activities. ■ It is also possible to reset the timer cv, which defines the total running hours of the pump, in the same way.Part 3 – Troubleshooting 3–9 Malfunction Indications and Safeties Overview ESiE04-031 2.3 Safeties Overview: EUWA*5-24KAZW1 and EUWY*5-24KAZW133 Safety devices The table below contains an overview of the safety devices.45 Alarm Alarm Activation Reset Wiring code Device description indication Flow switch or fl No flow for 5 s or no sufficient flow Manual software S10L, S11L Contact closed pump contact during a period of 15 s after pump start. reset on flow Reverse phase flh1 Wrong phase sequence Correct phase A2P I/O PCB protector (only if the unit is ON) sequence High-pressure h1 Discharge pressure Manual software S1PH, S2PH Switch ON/OFF switch > 30.9 bar reset Low-pressure l1 Low-pressure ON Manual software S4LP, S5LP Switch ON/OFF switch ■ Standard: 1.2 bar reset ■ ZL/ZH: 0.5 bar Outlet water a1 Outlet water temp. Manual software R4T NTC sensor temp. too low ■ temp. < 4.0°C reset (freeze-up ■ temp. < -11.5 °C Standard protection) ■ temp. < -6.5 °C ZL option ZH option Discharge ther- h1 High compressor discharge temp. Manual software Q1D, Q2D Bimetal mal protector > 135°C reset and temp. ON/OFF < 115°C Overcurrent h1 Overcurrent (1) Bimetal Manual software K4S, K5S ON/OFF relay compres- reset sor motor NTC probe h1 Probe is defective Manual software R6T NTC sensor reset ambient temper- ature NTC probe e1 Probe is defective Automatic reset R3T NTC sensor evaporator inlet NTC probe of e2 Probe is defective Automatic reset R4T NTC sensor the outlet water temperature ■ Fuse e3 ■ Fuse blown Automatic reset F4 ■ fuse ■ Reverse or no power supply ■ I/O PCB evaporator ■ I/O PCB malfunction heater tape (F4) ■ Reverse phase ■ Problem I/O PCB Communication vn Communication error between the Automatic reset ■ Cable Controller error remote compact µchiller and the remote terminal terminal ■ Parameter H8 (1): An overview of the fuses and overcurrent relays is given in 'Checking the Power Supply and Fuses: EUWA*5-24KAZW1 and EUWY*5-24KAZW1' on page 3–18. 3–10 Part 3 – TroubleshootingESiE04-03 Malfunction Indications and Safeties OverviewAlarm indicators on The table below describes the alarm indicators on the I/O PCB. 1I/O PCB Symbol Indication HAP Green LED ■ Blinking = CPU OK H1P Red LED ■ Not blinking = CPU NOK H2P Red LEDAlarm indications The table below describes the alarm indications on the I/O PCB.on I/O PCB Indication H1P H2P 33 4 No error OFF OFF Safety device ON OFF Reverse phase OFF ON Sensor defective ON ON If more than one alarm is present, the reverse phase has the highest priority.Service information ■ If the error is solved, H1P and H2P keep their latest status. They can only be reset by switchingfor alarm OFF/ON the power from the I/O PCB.indications ■ If alarm codes fland h1are flashing alternately, the alarm is likely to be caused by the reverse 5 phase protection or by the fuse for evaporator heater tape (F4) that was blown.Part 3 – Troubleshooting 3–11 Malfunction Indications and Safeties Overview ESiE04-03133453–12 Part 3 – TroubleshootingESiE04-03 Checking the Inputs and Outputs3 Checking the Inputs and Outputs Part 3 13.1 What Is in This Chapter?Introduction This chapter contains information on how to measure and check the most important inputs and 33Overview outputs. 4 5 This chapter contains the following topics: See page 3–14 Topic 3–15 3.2–Checking the Temperature Sensors 3–16 3.3–I/O PCB sensors: R3T and R4T for EUWA*5-24KAZW1 and EUWY*5-24KAZW1 3–17 3.4–I/O PCB sensors: R6T, R7T and R8T for EUWA*5-24KAZW1 and 3–18 EUWY*5-24KAZW1 3.5–Checking the Digital Inputs and Outputs 3–19 3.6–Checking the Power Supply and Fuses: EUWA*5-24KAZW1 and EUWY*5-24KAZW1 3.7–Electrical Error Overview: EUWA*5-24KAZW1 and EUWY*5-24KAZW1Part 3 – Troubleshooting 3–13 Checking the Inputs and Outputs ESiE04-03 3.2 Checking the Temperature Sensors1 Introduction If the cause of the problem is related to the temperature sensors, the sensors should be checked prior to changing the PCB or an output device. Temperature The following sensors of the EUWA*5-24KAZW1 and EUWY*5-24KAZW1 are connected to the I/O sensors PCB: R3T/ R4T and R6T/R7T/R8T. How to check To check the temperature sensors, proceed as follows:33 Step Action4 1 Disconnect the sensor from the I/O PCB for EUWA*5-24KAZW1 and EUWY*5-24KAZW1. 2 Measure the temperature and the resistance value. 3 Check whether the measured values correspond with the values in the appropriate table: 'I/O PCB sensors: R3T and R4T for EUWA*5-24KAZW1 and EUWY*5-24KAZW1' on page 3–15.5 3–14 Part 3 – TroubleshootingESiE04-03 Checking the Inputs and Outputs3.3 I/O PCB sensors: R3T and R4T for EUWA*5-24KAZW1 and EUWY*5-24KAZW1 1Temp.-resistance The table below contains the temperature resistance values of the I/O PCB sensors R3T and R4T. 33 4Temp. Resistance (kΩ) Temp. Resistance (kΩ) Temp. Resistance (kΩ) 5(°C) (°C) (°C) Maximum Standard Minimum Maximum Standard Minimum Maximum Standard Minimum-50 4 58-49 344.40 329.20 314.70 5 23.42 22.99 22.57 59 3.28 3.21 3.14-48 324.70 310.70 297.20 6 22.45 22.05 21.66 60 3.18 3.11 3.04-47 306.40 293.30 280.70 7 21.52 21.15 20.78 61 3.09 3.02 2.95-46 289.20 277.00 265.30 8 20.64 20.29 19.95 62 2.99 2.92 2.86-45 273.20 261.80 250.60 9 19.80 19.40 19.15 63 2.90 2.83 2.77-44 258.10 247.50 237.20 10 19.00 18.70 18.40 64 2.81 2.75 2.69-43 244.00 234.10 224.60 11 18.24 17.96 17.67 65 2.73 2.66 2.60-42 230.80 221.60 212.70 12 17.51 17.24 16.97 66 2.65 2.58 2.52-41 218.50 209.80 201.50 13 16.80 16.55 16.31 67 2.57 2.51 2.45-40 206.80 198.70 191.00 14 16.13 15.90 15.87 68 2.49 2.43 2.37-39 195.90 188.40 181.10 15 15.50 15.28 15.06 69 2.42 2.36 2.30-38 185.40 178.30 171.59 16 14.89 14.68 14.48 70 2.35 2.29 2.24-37 175.5. 168.90 162.00 17 14.31 14.12 13.93 71 2.28 2.22 2.17-36 166.20 160.10 154.10 18 13.75 13.57 13.40 72 2.21 2.16 2.10-35 157.50 151.80 140.20 19 13.22 13.06 12.89 73 2.15 2.10 2.04-34 149.30 144.00 138.80 20 12.72 12.56 12.41 74 2.09 2.04 1.98-33 141.60 136.60 131.80 21 12.23 12.09 11.95 75 2.03 1.98 1.93-32 134.40 129.70 125.20 22 11.77 11.63 11.07 76 1.97 1.92 1.87-31 127.60 123.20 118.90 23 11.32 11.20 11.07 77 1.92 1.87 1.82-30 121.20 117.10 113.10 24 10.90 10.78 10.60 78 1.86 1.81 1.78-29 115.10 111.30 107.50 25 10.49 10.38 10.27 79 1.81 1.76 1.71-28 109.30 105.70 102.20 26 10.10 10.00 9.90 80 1.76 1.71 1.68-27 103.80 100.40 97.16 27 9.73 9.63 9.52 81 1.71 1.66 1.62-26 98.63 95.47 92.41 28 9.38 9.28 9.18 82 1.66 1.62 1.57-25 93.75 90.80 87.93 29 9.04 8.94 8.84 83 1.62 1.57 1.53-24 89.15 86.39 83.70 30 8.72 8.62 8.52 84 1.57 1.53 1.49-23 84.82 82.22 79.71 31 8.41 8.31 8.21 85 1.53 1.49 1.44-22 80.72 78.29 75.93 32 8.11 8.01 7.91 86 1.49 1.45 1.40-21 76.85 74.58 72.36 33 7.82 7.72 7.62 87 1.45 1.41 1.37-20 73.20 71.07 68.99 34 7.55 7.45 7.35 88 1.41 1.37 1.33-19 69.74 67.74 65.80 35 7.28 7.19 7.09 89 1.37 1.33 1.29-18 66.42 64.54 62.72 36 7.03 6.94 6.84 90 1.34 1.30 1.26-17 63.27 61.52 59.81 37 6.79 6.69 6.60 91 1.30 1.26 1.22-16 60.30 58.66 57.05 38 6.56 6.46 6.37 92 1.27 1.23 1.19-15 57.49 55.95 54.44 39 6.33 6.24 6.15 93 1.23 1.20 1.16-14 54.83 53.39 51.97 40 6.12 6.03 5.94 94 1.20 1.16 1.13-13 52.31 50.96 49.83 41 5.92 5.82 5.73 95 1.17 1.13 1.10-12 49.93 48.66 47.12 42 5.72 5.63 5.54 96 1.14 1.10 1.07-11 47.67 46.48 45.31 43 5.53 5.43 5.35 97 1.11 1.08 1.04-10 45.53 44.41 43.32 44 5.34 5.25 5.17 98 1.08 1.05 1.01-9 43.50 42.25 41.43 45 5.16 5.08 4.99 99 1.05 1.02 0.99-8 41.54 40.56 39.59 46 4.99 4.91 4.82 100 1.03 0.99 0.96-7 39.68 38.76 37.85 47 4.83 4.74 4.66 101 1.00 0.97 0.94-6 37.91 37.05 36.20 48 4.67 4.59 4.51 102 0.98 0.94 0.91-5 36.24 35.43 34.03 49 4.52 4.44 4.36 103 0.95 0.92 0.89-4 34.65 33.89 33.14 50 4.38 4.30 4.22 104 0.93 0.90 0.87-3 33.14 32.43 31.73 51 4.24 4.16 4.08 105 0.91 0.87 0.84-2 31.71 31.04 30.39 52 4.10 4.02 3.95 106 0.88 0.85 0.82-1 30.35 29.72 29.11 53 3.97 3.90 3.82 107 0.86 0.83 0.800 20.00 28.47 27.89 54 3.84 3.77 3.69 108 0.84 0.81 0.781 27.83 27.28 26.74 55 3.72 3.65 3.57 109 0.82 0.79 0.762 26.64 26.13 25.62 56 3.61 3.53 3.46 110 0.80 0.77 0.743 25.51 25.03 24.55 57 3.49 3.42 3.35 — 0.78 0.75 0.73 24.24 23.99 23.54 3.39 3.31 3.24Part 3 – Troubleshooting 3–15 Checking the Inputs and Outputs ESiE04-03 3.4 I/O PCB sensors: R6T, R7T and R8T for EUWA*5-24KAZW1 and EUWY*5-24KAZW11 Temp.-resistance The table below contains the temperature resistance values of the I/O PCB sensors R6T, R7T and R8T. Resistance (kΩ) Resistance (kΩ) Resistance (kΩ) Temp. (°C) Temp. (°C) Temp. (°C) At x.0°C At x.5°C At x.0°C At x.5°C At x.0°C At x.5°C -20 197.81 192.08 14 33.02 32.25 48 7.75 7.60 -19 186.53 181.16 15 31.50 30.77 49 7.46 7.31 -18 175.97 170.94 16 30.06 29.37 50 7.18 7.04 -17 166.07 161.36 17 28.70 28.05 51 6.91 6.7833 -16 156.80 152.38 18 27.41 26.78 52 6.65 6.5345 -15 148.10 143.96 19 26.18 25.59 53 6.41 6.53 -14 139.94 136.05 20 25.01 24.45 54 6.65 6.53 -13 132.28 128.63 21 23.91 23.37 55 6.41 6.29 -12 125.09 121.66 22 22.85 22.35 56 6.18 6.06 -11 118.34 115.12 23 21.85 21.37 57 5.95 5.84 -10 111.99 108.96 24 20.90 20.45 58 5.74 5.43 -9 106.03 103.18 25 20.00 19.56 59 5.14 5.05 -8 100.41 97.73 26 19.14 18.73 60 4.96 4.87 -7 95.14 92.61 27 18.32 17.93 61 4.97 4.70 -6 90.17 87.79 28 17.54 17.17 62 4.62 4.54 -5 85.49 83.25 29 16.80 16.45 63 4.46 4.38 -4 81.08 78.97 30 16.10 15.76 64 4.30 4.23 -3 76.93 74.94 31 15.43 15.10 65 4.16 4.08 -2 73.01 71.14 32 14.79 14.48 66 4.01 3.94 -1 69.32 67.56 33 14.18 13.88 67 3.88 3.81 0 65.84 64.17 34 13.59 13.31 68 3.75 3.68 1 62.54 60.96 35 13.04 12.77 69 3.62 3.56 2 59.43 57.94 36 12.51 12.25 70 3.50 3.44 3 56.49 55.08 37 12.01 11.76 71 3.38 3.32 4 53.71 52.38 38 11.52 11.29 72 3.27 3.21 5 51.09 49.83 39 11.06 10.84 73 3.16 3.11 6 48.61 47.42 40 10.63 10.41 74 3.06 3.01 7 46.26 45.14 41 10.21 10.00 75 2.96 2.91 8 44.05 42.98 42 9.81 9.61 76 2.86 2.82 9 41.95 40.94 43 9.42 9.24 77 2.77 2.72 10 39.96 39.01 44 9.06 8.88 78 2.68 2.64 11 38.08 37.18 45 8.71 8.54 79 2.60 2.55 12 36.30 35.45 46 8.37 8.21 80 2.51 2.47 13 34.62 33.81 47 8.05 7.90 — 3–16 Part 3 – TroubleshootingESiE04-03 Checking the Inputs and Outputs3.5 Checking the Digital Inputs and Outputs 1Troubleshooting In most cases a malfunction occurs in the unit itself and not in the control circuit of the unit. However, if a malfunction does occur in the control circuit, measure the relevant signals using the schematic input route shown below.Input route to PCB The block diagram below shows the digital input route from the transducer (e.g. thermostat, pressostat, reverse phase, etc.) to the PCB input. Unit Transducer Relay Relay contact PCB input Voltage free 230 V (coil) Voltage free 24 V AC 33 contact contactOutput route from The output is generated by the PCB. If a device does not operate, you should find the relevant outputPCB signal from the PCB in order to decide whether the PCB or the device needs replacement. The block diagram below shows the output route. 4 PCB output Control relay Device Voltage free 230 V (supply) E.g. fan, valve... 5 contactPart 3 – Troubleshooting 3–17 Checking the Inputs and Outputs ESiE04-031 3.6 Checking the Power Supply and Fuses: EUWA*5-24KAZW1 and EUWY*5-24KAZW1 Overview The table below contains an overview of the circuits, the voltage and their fuse codes. Overview fuses and Circuit Wiring code Type / voltage Fuse code overcurrent33 Main supply L1 + L2 + L3 + N 3 phases / 400 V AC F1+F2+F34 Control circuit I/O PCB L1 + N 1 phase / 230 V AC F45 L3 + N 1 phase / 230 V AC F1U Control circuit controller TR1-sec. 24 V AC F3U, F5U Control circuit (pump) for X1M 8-7 24 V AC F6 EUWAN5-24KAZW1 Fan circuit for L1 + N 1 phase / 230 V AC F7 EUWA*5-12KAZW1 Fan circuit for L1 + N 1 phase / 230 V AC F8 EUWA*18-24KAZW1 The table below contains an overview of the fuses and overcurrent for types EUWA*5-24KAZW1 and EUWY*5-24KAZW1. All models (400 V) Fuses + 5HP 8HP 10HP 12HP 16HP 20HP 24HP overcurrent F4 8A 8A 8A 8A 8A 8A 8A F5 125 mAT 125 mAT 125 mAT 125 mAT 125 mAT 125 mAT 125 mAT F7, F8 5A 5A 5A 5A 5A 5A 5A F1U 5A 5A 5A 5A 5A 5A 5A F3U 315 mAT 315 mAT 315 mAT 315 mAT 315 mAT 315 mAT 315 mAT K4S 9A 13 A 16 A 24 A 13 A 16 A 24 A K5S ___ ___ ___ ___ 13 A 16 A 24 A K6S 1.4 A 1.4 A 1.4 A 1.4 A 2A 2A 2A (st. pump) K6S 2A 2A 2A 2A 3.7 A 3.7 A 3.7 A (op. pump high) Units with integrated pump Fuses 5HP 8HP 10HP 12HP 16HP 20HP 24HP F1, F2, F3 3 X 20 A 3 X 25 A 3 X 32 A 3 X 40 A 3 X 50 A 3 X 50 A 3 X 63 A (=gL/gG) Units without integrated pump Fuses 5HP 8HP 10HP 12HP 16HP 20HP 24HP F1, F2, F3 3 X 20 A 3 X 25 A 3 X 25 A 3 X 32 A 3 X 40 A 3 X 50 A 3 X 63 A (=gL/gG) 3–18 Part 3 – TroubleshootingESiE04-03 Checking the Inputs and Outputs3.7 Electrical Error Overview: EUWA*5-24KAZW1 and EUWY*5-24KAZW1 1Introduction This map gives an overview of the most common electrical errors that can occur on the EUWA*5-24KAZW1 and the EUWY*5-24KAZW1. See also 'Wiring Diagram: EUWA*5-24KAZW1 and EUWY*5-24KAZW1' on page 1–79.General items Before proceeding, confirm the status of the following items: ■ Microchiller compact: is the controller initialized? Are all parameters set? ■ I/O PCB: Is the PCB working? If the HAP (green led) blinks, the PCB is working. 33General remark If an electrical error is solved, H1P (red) and H2P (red) on the I/O PCB keep their latest status. H1Pabout H1P and H2P and H2P can only be reset by switching the I/O PCB OFF/ON.on I/O PCBError list The table below contains an error list for the microchiller compact controller. 4microchillercompact controllerMicrochiller I/O PCB General Possible cause Part Con- Actioncompact H1P H2P error nectorcontroller descriptionE1 OFF OFF Sensor input Evaporator inlet water R3T X60A Check sensor. 5 1 broken sensor brokenE2 OFF OFF Sensor input Evaporator outlet water R4T X61A Check sensor. 2 broken sensor brokenE3 Or FL OFF ON Fuse blown F4 X1A Check fuse.and H1 Reverse phase error X1A Check L1/L2/L3 connection. I/O PCB broken A2P ■ Check I/O PCB (HAP must be blinking). ■ Check trafo power supply.FL OFF OFF Flow error Flow switch open S10L X65A Green LED’s = flow Overcurrent protection K6A X28A Reset overcurrent. pump Shortcut X28A Check shortcut Wireharness between I/O X71A ■ Check connections on PCB and microchiller X1 X71A (I/O PCB) compact ■ Check connections on X1 (microchiller compact)Part 3 – Troubleshooting 3–19Checking the Inputs and Outputs ESiE04-031 H1 ON OFF ■ High pressure switch S1HP X6A Check S1HP. circuit 1 S2HP33 OFF OFF X7A Check S2HP.4 H1 ON ON Sensor ■ High pressure switch X7A5 H1 circuit 2 X10A Check shortcut. broken Check K4S. L1 OFF OFF Low ■ If only 1 circuit: X11A shortcut X11A Check K5S. pressure X8A ■ Overcurrent K4S Check shortcut. X9A Check Q1D. protection compr. 1 X9A X71A Check Q2D. ■ Overcurrent K5S X1 protection compr. 2 Check shortcut. X40A ■ Check connections on ■ If only 1 circuit: X41A shortcut X42A X71A (I/O PCB). X63A ■ Check connections on ■ Discharge thermal Q1D X64A protection 1 Q2D X1 (microchiller compact). ■ Discharge thermal Check sensor. protection 2 Check sensor. ■ If only 1 circuit: Check sensor. shortcut Check S4LP. Check S5LP. Wireharness between I/O PCB and microchiller compact ■ Ambient R6T ■ If heat pump unit: coil R7T sensor 1 ■ If hatpins unit: coil R8T sensor 2 ■ Low pressure switch 1 S4LP ■ Low pressure switch 2 S5LPPhenomena The table below contains error phenomenaPhenomena Possible cause Part Con- Action nector Q11FFans of circuit 1 do not run Fan fuse of circuit 1 blown Q12F F7 Check fuse. Thermal protector fan circuit 1 X12A Check Q11F. X13A Check Q12F. Wiring connector X21A Check wiring connector X22A X21A. Check wiring connector X22A.3–20 Part 3 – TroubleshootingESiE04-03 Checking the Inputs and OutputsFans of circuit 2 do not run Fan fuse of circuit 1 blown Q21F F8 Check fuse. 1PCB fuse F1U blown Thermal protector fan circuit 1 Q22F X14A 33 X15A Check Q21F. Wiring connector X23A Check Q22F. X24A Check wiring connector X23A. Shortcut (L1 connected to N) made on Check wiring connector PCDB X24A. Ex. X30A (S10L coil) was shortcut by bridge => I/O PCB was broken. 4 5Part 3 – Troubleshooting 3–21 Checking the Inputs and Outputs ESiE04-03133453–22 Part 3 – TroubleshootingESiE04-03 Troubleshooting4 Troubleshooting Part 3 14.1 What Is in This Chapter?Introduction When a problem occurs, you have to check all possible malfunctions. 33Overview 4 This chapter gives a general idea of where to look for malfunctions. Furthermore, the general 5 procedures for refrigeration circuit and electrical circuit repair are described. Not all repair procedures are described. Some procedures are considered common practice. This chapter contains the following topics: See page Topic 3–24 4.2–Items to Be Checked 3–26 4.3–General Repair Procedures 3–27 4.4–Unlocking the Keyboard 3–28 4.5–Replacing the Controller: EUWA*5-24KAZW1 3–33 4.6–Replacing the Controller: EUWY*5-24KAZW1 3–39 4.7–Replacing the PCB: EUWA*5-24KAZW1 and EUWY*5-24KAZW1 3–40 4.8–Soft Starter (option EKSS) Thermal ProtectionPart 3 – Troubleshooting 3–23Troubleshooting ESiE04-03 4.2 Items to Be Checked1Introduction The tables below contain the most frequent failures and their corresponding corrective action: ■ In case the unit does not start and there is no malfunction indication. ■ In case the unit does not start and there is a malfunction indication. No malfunction The unit does not start and there is no malfunction indication: indication Possible causes Items to be checked33 Power supply problem: ■ Loose or broken connections4 ■ Main supply ■ Blown fuses (due to short circuit) ■ Control system supply ■ Defective transformer5 ■ PCB supply (for EUWA*5-24KAZW1 ■ Check the remote start/stop set-up and correct it, if and EUWY*5-24KAZW1) necessary. The unit is not switched ON. ■ In case of remote control, check the field wiring. One of the timers is still active. Check the timers overview in this manual and wait until all timers have elapsed. See ‘‘Compressor Tim- The unit is incorrectly programmed. ers” on page 2-9. Check the settings. Do not set the compressor step in manual mode con- trol to 0%.Malfunction The unit does not start and there is a malfunction indication:indication Malfunction Possible causes Items to be checked Freeze-up ■ Water flow too low ■ Pump operation ■ Refrigerant shortage ■ Water flow (blocked valves) Overcurrent in ■ Operation out of range ■ Flow switch operation the compressor ■ Defective thermostat control ■ Operation condition ■ Blocked parts in the refrigerant system ■ Failure on one of the phases ■ Refrigerant leaks ■ Low supply voltage ■ Motor overload ■ Power supply ■ Fuses ■ Mains isolator switch ■ Mains relay contacts ■ Operation condition ■ Compressor windings ■ Current on all 3 phases ■ Reset the overcurrent relay3–24 Part 3 – TroubleshootingESiE04-03 Troubleshooting Malfunction Possible causes Items to be checked 1 ■ Operation condition High-pressure ■ Defective condenser fan 33 switch operation in cooling outdoor air temp. < 43°C 4 ■ State of the condenser (clean) 5 Flow switch or ■ Dirty or blocked condenser pump contact ■ Operation out of range ■ Flow switch ■ Pump operation Discharge ther- ■ Damaged flow switch ■ Field wiring mal protector ■ Incorrect pump operation ■ Control devices Fan thermal ■ Incorrect field wiring protector ■ Defective control devices ■ Refrigerant leak Reverse phase ■ Operation condition protection (pump relay) ■ State of the fans (free rotation) ■ State of the condenser ■ Refrigerant shortage ■ Swap two phases ■ Operation out of range ■ Connect the loose phase ■ Blocked fan ■ Blocked condenser ■ Incorrect phase direction ■ One phase missing An overview of the malfunction indications and safeties is given in 'Malfunction Indications and Safeties Overview' on page 3–7.Part 3 – Troubleshooting 3–25 Troubleshooting ESiE04-031 4.3 General Repair Procedures33 Refrigeration circuit To carry out refrigeration circuit repairs, proceed as follows: repairs Step Action 1 Recover the refrigerant from the unit. It is strictly forbidden to release refrigerant into the atmosphere during service or repair jobs. 2 Carry out the repair according to the normal procedure. There are no special procedures for the replacement of refrigeration parts.See the general Daikin air-conditioning service manual for more information on the standard practice of refrigeration works. 3 Pressurize the system. Make sure there are no leaks. 4 Charge with the proper amount of refrigerant. For more information on the general repair procedures for R-407C, refer to the Service Manual for products using refrigerant R-407C.4 All refrigeration work has to be carried out by a licensed refrigeration engineer, and it has to comply with all relevant European and national regulations. Electrical circuit To carry out electrical circuit repairs, proceed as follows: repairs Step Action5 1 Measure all that is needed to locate the defective parts of the system. 2 Switch OFF the main power supply. 3 Carry out the repair according to standard procedures. 4 Switch ON the power supply. 5 Verify the proper operation of the replaced part by measurements. All electrical work has to be carried out by a licensed electrical engineer, and it has to comply with all relevant European and national regulations. 3–26 Part 3 – TroubleshootingESiE04-03 Troubleshooting4.4 Unlocking the Keyboard 1Locked keyboard If the keyboard is locked, it is no longer possible to manipulate the controller. When the unit is OFF, it stays OFF. When the unit is ON, it stays ON.Unlock the To unlock the keyboard according to method 1, proceed as follows:keyboard(method 1) Step Action 1 Press s and p simultaneously for 5 s. 2 Scroll using u or d to go to 177. 3 Press s. 33 4 Scroll to H9 and change it into 1. 5 Press s.Unlock the To unlock the keyboard according to method 2, proceed as follows: 4keyboard(method 2) Step Action 1 Press p for 5 s. 2 Scroll using u or d to go to 22. 3 Press s. 5 4 Scroll to H9 and change it into 1. 5 Press s.Part 3 – Troubleshooting 3–27 Troubleshooting ESiE04-031 4.5 Replacing the Controller: EUWA*5-24KAZW133 Replacing the To replace the controller, proceed as follows:4 controller5 Step Action 1 Remove the connections of the old controller. 2 Remove the old controller. 3 Install the new controller in the same way as the old controller. 4 Reconnect the controller. 5 Reprogram the controller. Entering the factory The factory menu is used to set up the identification parameters of the unit according to its controller. menu To enter the factory menu, proceed as follows: Step Action Result 1 Turn ON the power supply. Make sure that the unit is not working. If... Then... If it is, press c to switch OFF the There is no controller E1, E2 or E3 appears unit. installed on the screen. The controller is The temperature of installed and correctly sensor 1 appears. wired 2 Press sand psimultaneously for After 5 s, 0 lights up. 5 s. 3 Scroll using uor d to go to 177. — 4 Press s. You have entered the factory menu. The screen displays /3. For more information on the controller, see 'The Digital Controller' on page 2–25. 3–28 Part 3 – TroubleshootingESiE04-03 TroubleshootingLoading To load parameters when you have entered the factory menu, proceed as follows: 1parameters 33 Step Action Result 4 5 1 Scroll using u or d to go to parameter HC. — 2 Press s. 3 Scroll using u or d to change the value to 01. 4 Press s. You see parameter HC. 5 Scroll using u or d to go to parameter H1. You can start initialization. 6 Press s. — 7 Scroll using u or d to change the value to 02. 8 Press s. You see parameter H1. 9 Use u or d to go to the other parameters. — For the other parameters, see the tables further in this section: ■ Sensors ■ Regulator ■ Compressor ■ Fans ■ Anti-freeze and supporting heaters ■ Alarm ■ Others.To exit the factory To exit the factory menu when you have changed all parameters, proceed as follows:menu Step Action 1 Press p. 2 Turn OFF the power supply.Part 3 – Troubleshooting 3–29 Troubleshooting ESiE04-031 Sensors The table below contains the settings of the sensors. Code Parameter Function EUWA*5-24KAZW1 Read/ write 13 Factory Air coil or ambient probe type 1 r/w 16 Factory Offset for /1 0°C 17 Factory Offset for /2 18 Factory Offset for /3 1b Factory Digital filter 4 8 1v Factory Input limitation 033 1d User Measurement unit Regulator The table below contains the settings of the regulator.4 Code Parameter Function EUWA*5- EUWA*16- Read/ 12KAZW1 24KAZW1 write5 r1 Direct Cooling set point 12°C 12°C r/w Compressor r2 Direct Cooling hysteresis 3°C 3°C r5 Factory Compressor rotation __ 0 ra Factory Min. cooling set point Standard 7°C 7°C ZL option -7°C -7°C ZH option -2°C -2°C rb Factory Max. cooling set point 25°C 25°C The table below contains the settings of the compressor. Code Parameter Function EUWA*5- EUWA*16- Read/ 12KAZW1 24KAZW1 write c1 Factory Min. running time 0s 0s r/w c2 Factory Guard timer 6 (x 10 s) 6 (x 10 s) c3 Factory Anti-recycling timer 24 (x 10 s) 24 (x 10 s) c4 Factory Start delay between the two __ 5s compressors c5 Factory Stop delay between the two __ 0s compressors c6 User Time delay at start-up 0s 0s c7 User ON delay pump compressor 15 s 15 s c8 User OFF delay pump compressor 0 min 0 min r c9 Direct Running hours compressor 1 __ __ ca Direct Running hours compressor 2 __ __ 3–30 Part 3 – TroubleshootingESiE04-03 Troubleshooting Code Parameter Function EUWA*5- EUWA*16- Read/ 1 12KAZW1 24KAZW1 write cb User Maintenance threshold of c9 & cA 0 h x 100 0 h x 100 r/w cv Direct Running hours pump __ __ rFans The table below contains the settings of the fans. Code Parameter Function EUWA*5-24KAZW1 Read/ write f1 Factory Are there any fans? 0 r/wAnti-freeze and The table below contains the settings of the anti-freeze and the supporting heaters. 33supporting heaters 4 5 Code Parameter Function EUWA*5- EUWA*16- Read/ 12KAZW1 24KAZW1 write a1 Factory Anti-freeze alarm set Standard 4°C 4°C r/w point ZL option -11.5°C -11.5°C ZH option -6.5°C -6.5°C a2 Factory Anti-freeze alarm hysteresis 3.5°C 3.5°C a3 Factory Bypass time for anti-freeze alarm 0 s 0s a4 Factory Anti-freeze heater set Standard 4°C 4°C -10°C point ZL option -10°C ZH option -5°C -5°C a5 Factory Anti-freeze heater hysteresis 3°C 3°C a6 Factory Supporting heaters probe 0 0 a7 Factory Limit anti-freeze alarm set -15°C -15°CAlarm The table below contains the settings of the alarm. Code Parameter Function EUWA*5- EUWA*16- Read/ 12KAZW1 24KAZW1 write p1 Factory Flow-start timer 20 s 20 s r/w p2 Factory Flow-stop timer 5s 5s p3 Factory LP bypass timer 60 s 60 s p4 User Buzzer ON time 1 min 1 min p5 Factory Reset of alarms 0 0 p8 Factory Selection of digital input ID1 1 1Part 3 – Troubleshooting 3–31Troubleshooting ESiE04-031 Code Parameter Function EUWA*5- EUWA*16- Read/ 12KAZW1 24KAZW1 write Others p9 Factory Selection of digital input ID2 0 0 r/w334 pa Factory LP alarm when the compr. is OFF 0 05 pb Factory High temperature alarm set 90°C 90°C pv Factory High temperature alarm delayed at 30 min 30 min start-up The table below contains the other settings. Code Parameter Function EUWA*5- EUWA*16- Read/ 12KAZW1 24KAZW1 write h1 Factory Unit type 2 2 r/w h5 Factory Pump func. logic 1 1 h6 User Cooling/heating input 0 0 h7 User ON/OFF input 0 0 h8 User Number of terminals 0 0 h9 User Keyboard lock-up 1 1 ha User Serial address 1 1 hb User Remote control password 1 1 hv Factory Second set of parameters 1 1 hd Factory Logic inversion cooling/heating 1 1 he Factory Inversion valve status cool/heat 1 1 hf Factory Alarm relay state without alarm 0 0 hG User Software release version __ __ r hh Factory Status of output 2 (heater or 0 1 r/w second compressor)3–32 Part 3 – TroubleshootingESiE04-03 Troubleshooting4.6 Replacing the Controller: EUWY*5-24KAZW1 1Replacing the To replace the controller, proceed as follows: 33controller 4 5 Step Action 1 Remove the connections of the old controller. 2 Remove the old controller. 3 Install the new controller in the same way as the old controller. 4 Reconnect the controller. 5 Reprogram the controller.Entering the factory The factory menu is used to set up the identification parameters of the unit according to its controller.menu To enter the factory menu, proceed as follows: Step Action Result 1 Turn ON the power supply. Make sure that the unit is not working. If... Then... If it is, press c to switch OFF the There is no controller E1, E2 or E3 appears unit. installed on the screen. The controller is The temperature of installed and correctly sensor 1 appears. wired 2 Press sand psimultaneously for After 5 s, 0 lights up. 5 s. 3 Scroll using uor d to go to 177. — 4 Press s. You have entered the factory menu. The screen displays /3. For more information on the controller, see 'The Digital Controller' on page 2–25.Part 3 – Troubleshooting 3–33 Troubleshooting ESiE04-031 Loading To load parameters when you have entered the factory menu, proceed as follows: parameters Step Action Result 1 Scroll using u or d to go to parameter HC. — 2 Press s. 3 Scroll using u or d to change the value to 01. 4 Press s. You see parameter HC. 5 Scroll using u or d to go to parameter H1. You can start initialization.33 6 Press s. —45 7 Scroll using u or d to change the value to 03. 8 Press s. You see parameter H1. 9 Use u or d to go to the other parameters. — For the other parameters, see the tables further in this sec- tion: ■ Sensors ■ Regulator ■ Compressor ■ Fans ■ Anti-freeze and supporting heaters ■ Alarm ■ Others. To exit the factory To exit the factory menu when you have changed all parameters, proceed as follows: menu Step Action 1 Press p. 2 Turn OFF the power supply. 3–34 Part 3 – TroubleshootingESiE04-03 TroubleshootingSensors The table below contains the settings of the sensors. 1Regulator Code Parameter Function EUWY*5-24KAZW1 Read/ write 13 Factory Air coil or ambient probe type 1 r/w 16 Factory Offset for /1 0°C 17 Factory Offset for /2 18 Factory Offset for /3 1b Factory Digital filter 4 1v Factory Input limitation 8 1d User Measurement unit 0 33 The table below contains the settings of the regulator. Code Parameter Function EUWY*5- EUWY*16- Read/ 12KAZW1 24KAZW1 write 4 r1 Direct Cooling set point 12°C 12°C r/w r2 Direct Cooling hysteresis 3°C 3°C r3 Direct Heating set point 30°C 30°C r4 Direct Heating hysteresis 3°C 3°C 5 r5 Factory Compressor rotation __ 0°C ra Factory Min. cooling set point Standard 7°C 7°C ZL option -7°C -7°C ZH option -2°C -2°C rb Factory Max. cooling set point 25°C 25°C rv Factory Min. heating set point 25°C 25°C rd Factory Max. heating set point 48°C 48°CPart 3 – Troubleshooting 3–35 Troubleshooting ESiE04-031 Compressor The table below contains the settings of the compressor. Code Parameter Function EUWY*5- EUWY*16- Read/ 12KAZW1 24KAZW1 write c1 Factory Min. running time 0s 0s r/w c2 Factory Guard timer 6 (x 10 s) 6 (x 10 s) c3 Factory Anti-recycling timer 24 (x 10 s) 24 (x 10 s) c4 Factory Start delay between the two __ 5s compressors c5 Factory Stop delay between the two __ 0s33 compressors45 c6 User Time-delay at start-up 0s 0s 15 s 15 s Fans c7 User ON delay pump-compressor 0 min 0 min Defrosting c8 User OFF delay pump-compressor c9 Direct Running hours compressor 1 __ __ r ca Direct Running hours compressor 2 __ __ cb User Maintenance threshold of c9 & cA 0 h x 100 0 h x 100 r/w cv Direct Running hours pump __ __ r The table below contains the settings of the fans. Code Parameter Function EUWY*5-24KAZW1 Read/ write f1 Factory Are there any fans? 0 r/w Fan control is done by the I/O PCB. The table below contains the settings for defrosting. Code Parameter Function EUWY*5-24KAZW1 Read/ write d1 Factory Defrost cycle 1 r/w d2 Factory Time or temperature based defrost 1 d3 Factory Defrost starting temperature 8.5°C d4 Factory Defrost stopping temperature 11.5°C d5 Factory Min. time interval for defrost start 10°C d6 Factory Min. duration of defrost cycle 10°C d7 Factory Max. duration of defrost cycle 10 min d8 Factory Time delay between 2 defrost cycles 20 min db Factory Anti-freeze heaters active while 0 defrosting 3–36 Part 3 – TroubleshootingESiE04-03 Troubleshooting Code Parameter Function EUWY*5-24KAZW1 Read/ 1 write dv Factory Delay before defrosting 0 min r/w dd Factory Delay after defrosting 0 minAnti-freeze and The table below contains the settings of the anti-freeze and the supporting heaters.supporting heaters Code Parameter Function EUWY*5- EUWY*16- Read/ 12KAZW1 24KAZW1 write a1 Direct Anti-freeze alarm set Standard 4°C 4°C r/w point ZL option -11.5°C -11.5°C 33 4 ZH option -6.5°C -6.5°C 5 a2 Direct Anti-freeze alarm hysteresis 3.5°C 3.5°C a3 Direct Bypass time for anti-freeze alarm 0 s 0s a4 Direct Anti-freeze heater set Standard 4°C 4°C point ZL option -10°C -10°C ZH option -5°C -5°C a5 Factory Anti-freeze heater hysteresis 3°C 3°C a6 Factory Supporting heaters probe 0 0 a7 Factory Limit anti-freeze alarm set -15°C -15°C a8 Factory Set point for the supporting heater 25°C 25°C a9 Factory Heating support resistance diff. 3°C 3°C aa Factory Automatic switch-on for anti-frost 0°C 0°CAlarm The table below contains the settings of the alarm. Code Parameter Function EUWY*5- EUWY*16- Read/ 12KAZW1 24KAZW1 write p1 p2 Factory Flow-start timer 20 s 20 s r/w p3 Factory Flow-stop timer 5s p4 Factory LP bypass timer 60 s 5s p5 User Buzzer ON time 1 min p8 Factory Reset of alarms 0 60 s p9 Factory Selection of digital input ID1 1 pa Factory Selection of digital input ID2 8 1 min pb Factory LP alarm when the compr. is OFF 0 pv Factory High temp. alarm set 90°C 0 Factory High temp. alarm delayed at 30 min start-up 1 8 0 90°C 30 min r/wPart 3 – Troubleshooting 3–37Troubleshooting ESiE04-031 Others The table below contains the other settings.33 Code Parameter Function EUWA*5- EUWA*16- Read/4 12KAZW1 24KAZW1 write5 h1 Factory Unit type 3 3 r/w h5 Factory Pump func. logic 1 1 h6 User Cooling/heating input 0 0 h7 User ON/OFF input 0 0 h8 User No. of terminals 0 0 h9 User Keyboard lock-up 1 1 ha User Serial address 1 1 hb User Remote control password 1 1 hv Factory Second set of parameters 1 1 hd Factory Logic inversion cooling/heating 1 1 he Factory Inversion valve status cool/heat 1 1 hf Factory Alarm relay state without alarm 0 0 hG User Software release version __ __ r hh Factory Status of output 2 (heater or 0 1 r/w second compressor)3–38 Part 3 – TroubleshootingESiE04-03 Troubleshooting4.7 Replacing the PCB: EUWA*5-24KAZW1 and EUWY*5-24KAZW1 1Replacing the PCB To replace the PCB, proceed as follows: 33 4 Step Action 1 Switch off the power. 2 Remove the connections of the old PCB. 3 Remove the old PCB. 4 Place the new PCB in the same way as the old PCB. 5 Reconnect the PCB. 6 Set the dipswitches on the PCB on the right position (depending on the unit type).Dipswitches The illustration below shows the dipswitches on the PCB. S1A S2A 1234 12Function of the The table below describes the function of the dipswitches and pushbuttons on the PCB.dipswitches 5 S1A Dipswitch 1 S2A Dipswitch 2 1 0 = 1 circ. 1 Defrost setting (only for 1 = 2 circ. EUWA*5-24KAZW1) 0 = Start condition 1 & fan defrost 1 (5HP, 8HP, 16HP) 1 = Start condition 2A/B & fan defrost 2 (10HP, 12HP, 20HP, 24HP) 2 010 = EUWA 2 Fan setting (See 'Head Pressure Con- 3 100 = EUWY (without defrost com- trol: EUWA*5-24KAZW1 and EUWY*5-24KAZW1' on page 2–11 for 4 pressor stop) fan settings. 101 = EUWY (with defrost 0 = Fan setting 1 compressor stop) (5HP, 8HP, 16HP) 1 = Fan setting 2 (10HP, 12HP, 20HP, 24HP)Part 3 – Troubleshooting 3–39 Troubleshooting ESiE04-03 4.8 Soft Starter (option EKSS) Thermal Protection1 Introduction The PS S 25 (soft starter) is used in small chillers to reduce the starting current of the compressor. The soft starter is equipped with an internal protection that prevents the softstarter from heating. Functional Inside the PS S 25, a heat sink is connected to the triac. The temperature of this heat sink is measured description internally in the soft starter. When the temperature of this heat sink reaches 100°C, the thermal protection will prevent the compressor from starting up after the start command is given by the digital controller.33 Thermal protection The thermal protection operates as follows:4 operation5 When the compressor If the heat sink temperature The compressor will... Ambient receives the start com- has reached 100°C due to... temperature > 43°C mand... The soft starter checks the ■ High ambient conditions Not start up. heat sink temperature. ■ Large switching rate (e.g. more than six hours an ambient temperature of 55°C inside the switchbox) ■ Other actions that cause the heater sink temperature to increase. If the unit is operating at an ambient temperature of more than 43°C and a restart of the compressor(s) is requested within 10 minutes after a stop, the unit may stop operating and no alarm is indicated on the central controller. This is because the soft starter module has switched to thermal protection. The thermal protection can be reset by manually switching the power off and on again after these 10 minutes. 3–40 Part 3 – TroubleshootingESIE04-03 4 Part 4 Commissioning and Test Run 3Introduction Commissioning and test run are well known practices in service engineering. This part contains a systematic approach on test run checks and test values, which guarantees a high quality installation and operation of the units.What is in this part? This part contains the following chapters: See page 44 Chapter 4–3 5 1–Pre-Test Run Checks 4–33 2–Test Run and Operation DataPart 4 – Commissioning and Test Run 4–1 ESIE04-0313454–2 Part 4 – Commissioning and Test RunESiE04-03 Pre-Test Run Checks1 Pre-Test Run Checks Part 4 11.1 What Is in This Chapter?Introduction This chapter contains checks you have to carry out before every test run.Overview This chapter contains the following topics: 3 Topic See page 4 1.2–General Checks 4–4 5 1.3–Water Piping Checks 4–5 1.4–External Static Pressure: EUWA*5-12KAZW1 4–8 1.5–External Static Pressure: EUWA*16-24KAZW1 4–10 1.6–External Static Pressure: EUWY*5-12KAZW1 4–12 1.7–External Static Pressure: EUWY*16-24KAZW1 4–14 1.8–Static Pressure of the Pump for EUWA*5-24KAZW1 and EUWY*5-24KAZW1 4–16 1.9–Water Pressure Drop through Evaporator: EUWA*5-12KAZW1 4–18 1.9–Water Pressure Drop through Evaporator: EUWA*5-12KAZW1 4–18 1.10–Water Pressure Drop through Evaporator: EUWA*16-24KAZW1 4–20 1.11–Water Pressure Drop through Evaporator: EUWY*5-12KAZW1 4–22 1.12–Water Pressure Drop through Evaporator: EUWY*16-24KAZW1 4–24 1.13–Electrical Checks 4–26 1.14–Control of the function of the 4-way valve for EUWY*5-24KAZW1 4–27Part 4 – Commissioning and Test Run 4–3 Pre-Test Run Checks ESiE04-031 1.2 General Checks3 Checklist The table below contains the general checklist.45 Step Check whether... 1 There is external damage. 2 The unit is properly supported and/or has a proper foundation. 3 The unit is installed horizontally with a deviation of maximum 1°. 4 Anti-vibration pads are required. 5 Is the chiller of the type EUWY*5-24KAZW1? ■ When yes, go to step 6. ■ When no, go to step 8. 6 There is a drain possibility for condensed water. 7 A heater tape is placed inside the drain system. This is necessary to prevent ice accumu- lation and possible blockage during wintertime. 8 Check for remaining metal dust of burrs. Metal dust or burrs from grinding or drilling in the metal parts during construction facilitates the rust process and shortens the lifetime of the unit. 9 The operator has received the operation manual. 10 The installer has received the installation manual. 11 The air volume over the coil is adequate; there is no blockage (from paper, plastic...) or air short circuit due to wrong positioning. 4–4 Part 4 – Commissioning and Test RunESiE04-03 Pre-Test Run Checks1.3 Water Piping Checks 1Checklist The table below contains the water piping checklist. 3 4 Step Check whether... 5 1 A filter is installed in front of the water inlet of the plate-heat exchanger. The plate-heat exchangers are sensitive to dirt and small particles. 2 The water volume is within the limits. 3 There is adequate water flow. 4 The water quality meets the standards. 5 The water piping is properly insulated. 6 Measurement points for temperature and pressure are available on the water circuit. 7 The flow switch and pump are properly working. 8 Air purge points are installed on the high parts of the water piping. 9 Drain taps are installed at the low points of the water piping. 10 Other parts of the water circuit are properly mounted and installed (e.g. buffer tank, expan- sion tank...). 11 Vibration compensators are mounted at the water connections if the unit is positioned on anti-vibration pads.Water volume, flow The table below shows the operation range of water volume and water flow for proper operation of theand pressure unit. Chiller type Minimum water volume Minimum water flow Maximum water flow EUWA*5KAZW1 54 l 16.2 l/min 64.9 l/min EUWA*8KAZW1 85 l 25.6 l/min 102.5 l/min EUWA*10KAZW1 108 l 32.2 l/min 128.9 l/min EUWA*12KAZW1 126 l 37.9 l/min 151.6 l/min EUWA*16KAZW1 88 l 53 l/min 212 l/min EUWA*20KAZW1 111 l 67 l/min 267 l/min EUWA*24KAZW1 132 l 79 l/min 317 l/min EUWY*5KAZW1 43 l 21 l/min 68 l/min EUWY*8KAZW1 82 l 31 l/min 106 l/min EUWY*10KAZW1 100 l 38 l/min 137 l/min EUWY*12KAZW1 119 l 45 l/min 155 l/min EUWY*16KAZW1 82 l 61 l/min 212 l/min EUWY*20KAZW1 100 l 75 l/min 275 l/min EUWY*24KAZW1 119 l 89 l/min 309 l/min (1): a is the steplength. The water pressure should not exceed the maximum working pressure of 10 bar.Part 4 – Commissioning and Test Run 4–5 Pre-Test Run Checks ESiE04-031 Calculation of the The calculation method below is based on the fact that the water volume in a chiller should be large minimum water enough to prevent the compressor from excessive cycling. Sufficient water volume gives a certain volume inertia to the system, so that: ■ Water (or glycol) temperature does not drop too fast when the unit turns ON. ■ Water (or glycol) temperature does not rise too fast when the unit turns OFF. 0,5 x Q x t V= [m³] 2 x ρ x d x Cw with:3 Notation Dimension Description Default45 V [m³] Required system volume — Q [W] Cooling capacity at the lowest capacity — step of each chiller in the system t [s] Minimum cycling time allowed by the com- 240 s pressor ρ [kg/m³] Specific mass of the fluid ρwater = 1000 kg/m³ d [K] Thermostat step difference dinlet water control = 3 K Cw [J/kgK] Specific heat capacity of the fluid Cw, water = 4186 J/kgK Water quality The table below contains the required water quality specifications. Evaporator water Heated water (low temperature) Tendency if out of criteria Circulating Supply water Circulating water Supply water water (< 20°C) (20°C-60°C) Items to be checked pH at 25°C 6.8~8.0 6.8~8.0 7.0~8.0 7.0~8.0 Corrosion + scale < 30 < 30 < 30 Corrosion + scale Electrical conductivity mS/m < 40 < 50 < 50 < 50 Corrosion (at 25°C) < 50 < 50 < 50 Corrosion < 50 < 50 < 50 Scale Chloride ion mg Cl-/l < 50 < 70 < 70 < 70 Scale < 50 < 50 < 50 Scale Sulphate ion mg SO42-/l < 50 < 30 < 30 < 30 Scale M-alkalinity (pH 4.8) mg CaCO3/l < 50 Total hardness mg CaCO3/l < 70 Calcium hardness mg CaCO3/l < 50 Silica ion mg SiO2/l < 30 Items to be referred to Iron mg Fe/l < 1.0 < 0.3 < 1.0 < 0.3 Corrosion + scale Copper mg Cu/l < 1.0 < 0.1 < 1.0 < 0.1 Corrosion Sulphide ion mg S2-/l Not detectable Not detectable Not detectable Not detectable Corrosion 4–6 Part 4 – Commissioning and Test RunESiE04-03 Pre-Test Run Checks Evaporator water Heated water (low temperature) Tendency if out of 1 criteriaAmmonium ion mg NH4+/l < 1.0 < 0.1 < 0.3 < 0.1 CorrosionRemaining chloride mg Cl/l < 0.3 < 0.3 < 0.25 < 0.3Free carbide mg CO2/l < 4.0 < 4.0 < 0.4 < 4.0 CorrosionStability index – – – – Corrosion Corrosion + scale 3 4 5Part 4 – Commissioning and Test Run 4–7 Pre-Test Run Checks ESiE04-03 1.4 External Static Pressure: EUWA*5-12KAZW11 External static The illustration below shows the external static pressure of the unit depending on the water flow and pressure the OP-pump. 450,00 400,003 ESP [kPa] 350,00 54 300,00 65 250,00 7 200,00 8 150,00 100,00 1 2 50,00 3 4 0,00 20 40 60 80 100 120 140 0 WF [l/min] Symbols The table below describes the symbols. 4–8 Symbol Description ESP External static pressure of the unit WF Waterflow rate (1) EUWA(P,B)5KAZW1 (standard) (2) EUWA(P,B)8KAZW1 (standard) (3) EUWA(P,B)10KAZW1 (standard) (4) EUWA(P,B)12KAZW1 (standard) Part 4 – Commissioning and Test RunESiE04-03 Pre-Test Run Checks Symbol Description 1 (5) EUWA(P,B)5KAZW1 (OP pump high) (6) EUWA(P,B)8KAZW1 (OP pump high) 3 (7) EUWA(P,B)10KAZW1 (OP pump high) 4 (8) EUWA(P,B)12KAZW1 (OP pump high) 5Part 4 – Commissioning and Test Run 4–9 Pre-Test Run Checks ESiE04-03 1.5 External Static Pressure: EUWA*16-24KAZW11 External static The illustration below shows the external static pressure of the unit depending on the water flow and pressure the OP-pump. 600,003 ESP [kPa] 500,00 44 400,00 55 300,00 200,00 3 100,00 6 1 2 0,00 20 40 60 80 100 120 140 160 180 200 0 WF [l/min] Symbols The table below describes the symbols. 4–10 Symbol Description ESP External static pressure of the unit WF Waterflow rate (1) EUWA(P,B)16KAZW1 (standard) (2) EUWA(P,B)20KAZW1 (standard) (3) EUWA(P,B)24KAZW1 (standard) (4) EUWA(P,B)16KAZW1 (OP pump high) Part 4 – Commissioning and Test RunESiE04-03 Pre-Test Run Checks Symbol Description 1 (5) EUWA(P,B)20KAZW1 (OP pump high) (6) EUWA(P,B)24KAZW1 (OP pump high) 3 4 5Part 4 – Commissioning and Test Run 4–11 Pre-Test Run Checks ESiE04-03 1.6 External Static Pressure: EUWY*5-12KAZW11 External static The illustration below shows the external static pressure of the unit depending on the water flow and pressure the OP-pump. 450,00 NON-OPERATION AREA 400,003 ESP [kPa] 350,00 44 300,00 55 250,00 6 200,00 150,00 1 100,00 2 3 50,00 0,00 20 40 60 80 100 120 140 0 WF [l/min] Symbols The table below describes the symbols. 4–12 Symbol Description ESP External static pressure of the unit WF Waterflow rate (1) EUWY(P,B)5KAZW1 (standard) (2) EUWY(P,B)8KAZW1 (standard) (3) EUWY(P,B)10KAZW1 + EUWY(P,B)12KAZW1 (standard) (1) (4) EUWY(P,B)5KAZW1 (OP pump high) Part 4 – Commissioning and Test RunESiE04-03 Pre-Test Run Checks Symbol Description 1 (5) EUWY(P,B)8KAZW1 (OP pump high) (6) EUWY(P,B)10KAZW1 + EUWY(P,B)12KAZW1 (OP pump high) (1) (1): The minimum allowed waterflow of 12 HP unit is 45 l/min. Selecting a flow outside the curves can cause damage to or malfunction of the unit. See also minimum and maximum allowed water flowrange. See'Technical Specifications: EUWY*5-8KAZW1' on page 1–17 and 'Technical Specifications: EUWY*10-12KAZW1' on page 1–20. 3 4 5Part 4 – Commissioning and Test Run 4–13 Pre-Test Run Checks ESiE04-03 1.7 External Static Pressure: EUWY*16-24KAZW11 External static The illustration below shows the external static pressure of the unit depending on the water flow and pressure the OP-pump. 450,00 NON-OPERATION AREA 400,003 ESP [kPa] 350,00 44 300,00 35 250,00 5 200,00 150,00 1 100,00 2 50,00 0,00 20 40 60 80 100 120 140 160 180 200 0 WF [l/min] Symbols The table below describes the symbols. 4–14 Symbol Description ESP External static pressure of the unit WF Waterflow rate (1) EUWY(P,B)16KAZW1 (standard) (2) EUWY(P,B)20KAZW1 (standard) (3) EUWY(P,B)24KAZW1 (standard) (1) (4) EUWY(P,B)16KAZW1 (OP pump high) Part 4 – Commissioning and Test RunESiE04-03 Pre-Test Run Checks Symbol Description 1 (5) EUWY(P,B)20KAZW1 + EUWY(P,B)24KAZW1 (OP pump high) (1) (1): The minimum allowed waterflow of 12 HP unit is 45 l/min. Selecting a flow outside the curves can cause damage to or malfunction of the unit. See also minimum and maximum allowed water flowrange. See'Technical Specifications: EUWY*16-20KAZW1' on page 1–23 and 'Technical Specifications: EUWY*24KAZW1' on page 1–26. 3 4 5Part 4 – Commissioning and Test Run 4–15 Pre-Test Run Checks ESiE04-03 1.8 Static Pressure of the Pump for EUWA*5-24KAZW1 and EUWY*5-24KAZW11 Static pressure The illustration below shows the static pressure of the pump depending on the water flow and the pump type. 600,003 SP [kPa] 500,00 3 44 400,00 55 300,00 2 200,00 1 100,00 0,00 20,00 40,00 60,00 80,00 100,00 120,00 140,00 160,00 180,00 0,00 WF [l/min] 4–16 Part 4 – Commissioning and Test RunESiE04-03 Pre-Test Run ChecksSymbols The table below describes the symbols. 1 Symbol Description ESP Static pressure of pump WF Waterflow rate 1 CH4-30 (standard pump EUWA/Y(P,B)5-12KAZW1) 2 CH8-30 (standard pump EUWA/Y(P,B)16-20KAZW1) 3 CH4-50 (optional pump EUWA/Y(P,B)5-12KAZW1) 4 CH8-60 (optional pump EUWA/Y(P,B)16-24KAZW1) 5 CH8-40 (standard pump EUWA/Y(P,B)24KAZW1) 3 4 5Part 4 – Commissioning and Test Run 4–17 Pre-Test Run Checks ESiE04-03 1.9 Water Pressure Drop through Evaporator: EUWA*5-12KAZW11 Water pressure The illustration below shows the water pressure drop through evaporator for EUWA*5-12KAZW1. drop 1000,003 100,004 PD [kPa] 3 2 4 15 10,00 1,00 10 100 1000 1 WFE [l/min] 4–18 Part 4 – Commissioning and Test RunESiE04-03 Pre-Test Run ChecksSymbols The table below describes the symbols. 1 Symbol Description PD Pressure drop through evaporator WFE Evaporator waterflow rate (1) For EUWA*5KAZW1 (2) For EUWA*8KAZW1 (3) For EUWA*10KAZW1 (4) For EUWA*12KAZW1 Selecting a flow outside the curves can cause damage to or malfunction of the unit. See also 3 minimum and maximum allowed water flowrange. See 'Technical Specifications: EUWA*5-8KAZW1' on page 1–5 and 'Technical Specifications: EUWA*10-12KAZW1' on page 1–8. 4 5Part 4 – Commissioning and Test Run 4–19 Pre-Test Run Checks ESiE04-03 1.10 Water Pressure Drop through Evaporator: EUWA*16-24KAZW11 Water pressure The illustration below shows the water pressure drop through evaporator for EUWA*16-24KAZW1. drop 100,003 PD [kPa] 10,0045 2 3 1 100 1000 1,00 WFE [l/min] 10 4–20 Part 4 – Commissioning and Test RunESiE04-03 Pre-Test Run ChecksSymbols The table below describes the symbols. 1 Symbol Description PD Pressure drop through evaporator WFE Evaporator waterflow rate (1) For EUWA*16KAZW1 (2) For EUWA*20KAZW1 (3) For EUWA*24KAZW1 Selecting a flow outside the curves can cause damage to or malfunction of the unit. See also minimum and maximum allowed water flowrange. See 'Technical Specifications: 3 EUWA*16-20KAZW1' on page 1–11 and 'Technical Specifications: EUWA*24KAZW1' on page 1–14. 4 5Part 4 – Commissioning and Test Run 4–21 Pre-Test Run Checks ESiE04-03 1.11 Water Pressure Drop through Evaporator: EUWY*5-12KAZW11 Water pressure The illustration below shows the water pressure drop through evaporator for EUWY*5-12KAZW1. drop 1000,003 100,004 PD [kPa] 2 15 3 10,00 1,00 10 100 1000 1 WFE [l/min] 4–22 Part 4 – Commissioning and Test RunESiE04-03 Pre-Test Run ChecksSymbols The table below describes the symbols. 1 Symbol Description PD Pressure drop through evaporator WFE Evaporator waterflow rate (1) For EUWY*5KAZW1 (2) For EUWY*8KAZW1 (3) EUWY(P,B)10KAZW1 - EUWY(P,B)12KAZW1 (OP pump high) (1) (1): The minimum allowed waterflow of 12 HP unit is 45 l/min. 3 Selecting a flow outside the curves can cause damage to or malfunction of the unit. See also minimum and maximum allowed water flowrange. See 'Technical Specifications: EUWY*5-8KAZW1' on page 1–17 and 'Technical Specifications: EUWY*10-12KAZW1' on page 1–20. 4 5Part 4 – Commissioning and Test Run 4–23 Pre-Test Run Checks ESiE04-03 1.12 Water Pressure Drop through Evaporator: EUWY*16-24KAZW11 Water pressure The illustration below shows the water pressure drop through evaporator for EUWY*16-24KAZW1. drop 100,003 1 24 PD [kPa] 10,005 1,00 100 1000 10 WFE [l/min] 4–24 Part 4 – Commissioning and Test RunESiE04-03 Pre-Test Run ChecksSymbols The table below describes the symbols. 1 Symbol Description PD Pressure drop through evaporator WFE Evaporator waterflow rate (1) For EUWY*16KAZW1 (2) EUWY(P,B)20KAZW1 - EUWY(P,B)24KAZW1 (1) (1): The minimum allowed waterflow of 24 HP unit is 90 l/min. Selecting a flow outside the curves can cause damage to or malfunction of the unit. See also 3 minimum and maximum allowed water flowrange. See 'Technical Specifications: EUWY*16-20KAZW1' on page 1–23 and 'Technical Specifications: EUWY*24KAZW1' on page 1–26. 4 5Part 4 – Commissioning and Test Run 4–25 Pre-Test Run Checks ESiE04-03 1.13 Electrical Checks1 Checklist The table below contains the electrical checklist. Step Check whether... 1 The main fuses, earth leak detector and main isolator are installed. 2 The main power supply voltage deviates less than 10% from the nominal value. 3 The flow switch and pump contact are properly wired. 4 The optional wiring for pump control is installed. 5 The optional wiring for remote start/stop is installed.3 Make sure that the controller is correctly programmed. 6 The optional wiring for remote cool/heat is installed. Make sure that the controller is correctly programmed.45 4–26 Part 4 – Commissioning and Test RunESiE04-03 Pre-Test Run Checks1.14 Control of the function of the 4-way valve for EUWY*5-24KAZW1 1Illustration The illustration below shows the main components of the 4-way valve and of the connections with the 4-way valve. a b 1 3 e 5 f c 6 4 4 3 2 d 5Components The table below lists the main components of the 4-way valve and of the connections with the 4-wayNormal cooling valve. Symbol Description Symbol Description 1 Discharge tube from the a Pilot body compressor 2 Suction tube to the compressor b Coil 3 Tube to the plate heat exchanger c Piston body 4 Tube to the air-cooled heat d Compressor exchanger 5 Left pilot back capillary tube e Piston needle 6 Right pilot back capillary tube f Bleed hole The table below contains the normal condition of the 4-way valve in cooling mode. Discharge Suction Tube to the Tube to the Left pilot Right pilot plate heat air-cooled back capil- back capil- tube 1 tube 2 exchanger heat lary tube lary tube exchanger Hot Cool Cool as in Hot as in Temperature Temperature column 2 column 1 of valve body of valve bodyPart 4 – Commissioning and Test Run 4–27 Pre-Test Run Checks ESiE04-031 Normal heating The table below contains the normal condition of the 4-way valve in heating mode. Discharge Suction Tube to the Tube to the Left pilot Right pilot plate heat air-cooled back capil- back capil- tube 1 tube 2 exchanger heat lary tube lary tube exchanger Hot Cool Hot as in Cool as in Temperature Temperature column 1 column 2 of valve body of valve body The valve does not The table below contains the possible checks for finding the cause for the valve not shifting from shift from cooling to cooling to heating and the corresponding procedure to solve the problem. heating3 Check Cause Procedure45 Check the electrical circuit. No voltage to the coil Repair the electrical circuit. Check the coil. Coil is defective. Replace the coil. Check the refrigerant charge. Charge is low. 1. Repair the refrigerant charge. 2. Recharge the system. Pressure differential is Re-check the system. too high. Check the operation conditions in the following table to find the cause of the malfunction. The procedure for solving the problem is described in the last column. See the illustration to situate the numbers in the table heading. 4–28 Part 4 – Commissioning and Test RunESiE04-03 Pre-Test Run Checks1 2 3 4 5 6 Cause Procedure 1 Cool asHot Cool in Hot as in Temper- Hot The pilot valve 1. De-energize the solenoid. 3 column column ature of 4 2 1 valve works correctly. 5 body Cool as There is dirt in 2. Raise the head pressure. in column one bleed hole. 2 3. Re-energize the solenoid Cool as in to loosen the dirt. column 2 4. If the procedure was unsuccessful: Cool as in The piston cup ■ Remove the valve and column head leaks. clean it. 2 ■ Check for air before reinstalling. ■ If there is still no movement: replace the valve, add a new strainer to the discharge tube and mount the valve horizontally. 1. Stop the unit. 2. After pressure equaliza- tion, restart with energized solenoid.Hot Cool Hot as in Temper- Temper- The pilot tubes 3. If the valve shifts, column ature of ature of are clogged. retry with the compressor 1 valve valve on. body body If there is no reversal, replace the valve. 1. Raise the head pressure. 2. Operate the solenoid to free the dirt. 3. If there is still no shift, replace the valve.Hot Cool Hot as in Hot Hot Both parts of the 1. Raise the head pressure. column 1 pilot are still open. 2. Operate the solenoid to free the partially clogged port.Warm Cool Hot as in Temper- Warm 3. If there is still no shift, column ature of replace the valve. 1 valve body The compressor is defective.Part 4 – Commissioning and Test Run 4–29 Pre-Test Run Checks ESiE04-031 The valve starts to Check the operation conditions in the table below to find the cause of the malfunction. shift but does not The procedure to solve the problem is described in the last column. See the illustration to situate the numbers in the table heading. complete the reversal. 1 2 3 4 5 6 Cause Procedure Warm Warm Hot Warm Temper- Hot There is not 1. Check the unit for correct ature of enough pressure operating pressure and valve differential at charge. body start of stroke or not enough flow 2. Raise the head pressure.3 to maintain the pressure 3. If there is still no shift, differential. replace the valve. There is body Replace the valve. damage. Hot Warm Warm Hot Hot Hot Both parts of the 1. Raise the head pressure. pilot are still4 open. 2. Operate the solenoid to free the partially clogged port. Hot Hot Hot Hot Temper- Hot There is body 3. If there is still no shift, damage. replace the valve.5 ature of The valve is Replace the valve. valve hung up at mid-stroke. The 1. Raise the head pressure. body pumping vol- 2. Operate the solenoid. ume of the com- 3. If there is still no shift, Hot Hot Hot Hot Hot Hot pressor is not sufficient to replace the valve. maintain the reversal. 1. Raise the head pressure. 2. Operate the solenoid to Both parts of the pilot are still free the partially clogged open. port. 3. If there is still no shift, replace the valve. 4–30 Part 4 – Commissioning and Test RunESiE04-03 Pre-Test Run ChecksThe valve does not Check the operation conditions in the table below to find the cause of the malfunction. 1shift from heating to The procedure to solve the problem is described in the last column.cooling See the illustration to situate the numbers in the table heading. 3 41 2 3 4 5 6 Cause Procedure 5Hot Cool Hot as in Cool as Temper- Temper- The pressure 1. Raise the head pressure. column in ature of ature of differential is too The valve will reverse 1 column valve valve high. during the pressure 1 body body equalization period. The pilot tubes 2. Recheck the system. are clogged. 1. Raise the head pressure. 2. Operate the solenoid to free the dirt. 3. If there is still no shift, replace the valve.Hot Cool Hot as in Cool as Hot Temper- There is dirt in 1. Raise the head pressure. column in ature of one bleed hole. 1 column valve 2. Operate the solenoid. 1 body 3. If the procedure was unsuccessful: ■ Remove the valve and clean it. ■ Check for air before reinstalling. ■ If there is still no movement: replace the valve, add a new strainer to the discharge tube and mount the valve horizontally.Hot Cool Hot as in Cool as Hot Temper- The piston cup 1. Stop the unit. column in ature of head leaks. 1 column valve 2. After pressure equaliza- 1 body tion, restart with de-energized solenoid. 3. If the valve shifts, retry with the compressor on. If there is no reversal, replace the valve.Hot Cool Hot as in Cool as Hot Hot The pilot is Replace the pilot valve. column in Warm 1 column defective. 1Warm Cool Warm as Cool as Temper- The compressor is defective. in in ature of column column valve 1 1 bodyPart 4 – Commissioning and Test Run 4–31 Pre-Test Run Checks ESiE04-031 Leak when in Check the operation conditions in the table below to find the cause of the malfunction. heating mode The procedure to solve the problem is described in the last column. See the illustration to situate the numbers in the table heading. 1 2 3 4 5 6 Cause Procedure Hot Cool Hot as in Cool as Temper- Warmer The piston 1. Operate the valve several column in ature of than needle is leaking times. 1 column valve valve at the end of the 1 body body slide. 2. Recheck.3 Hot Cool Hot as in Cool as Warmer Warmer The piston 3. If there is an excessive column in than than needle and pilot leak, replace the valve. 1 column valve valve needle are leak- 1 body body ing. 1. Operate the valve several times. 2. Recheck. 3. If there is an excessive leak, replace the valve.45 4–32 Part 4 – Commissioning and Test RunESiE04-03 Test Run and Operation Data2 Test Run and Operation Data Part 4 12.1 What Is in This Chapter?Introduction The tables in this chapter contain an overview of the measurements that you can carry out. Use it asOverview a guideline during commissioning. 3 For the location of the measurement points, refer to the piping and wiring diagrams in Part 1. This chapter contains the following topics: Topic See page 4 2.2–Test Run and Operation Data for EUWA*5-24KAZW1 and EUWY*5-24KAZW1 4–34 5Part 4 – Commissioning and Test Run 4–33Test Run and Operation Data ESiE04-03 2.2 Test Run and Operation Data for EUWA*5-24KAZW1 and EUWY*5-24KAZW11Pressures The table below contains the measurable pressures. Measurement Value Suction pressure 4 – 8.5 bar Discharge pressure 7 – 22 bar Maximum water pressure 10 bar Temperatures The table below contains the measurable temperatures.3 Measurement Value4 Leaving water temperature ■ Standard: 5– 20°C ■ For ZH: -5 – 20°C5 Outdoor temperature ■ For ZL: -10 – 20°C Temperature difference at the air side ■ Heating: 35 - 50°C (only for Temperature difference at the water side Discharge temperature EUWY*5-24KAZW1) ■ -15 – 43°C for standard unit ■ -10 – 43°C for glycol unit 10 – 15°C 3 – 8°C 80 – 120°CVoltages The table below contains the measurable voltages. Measurement Value Power supply voltage Within ± 10% of the rated voltage Phase imbalance Control circuit voltage Within ± 2% of the rated voltage 230 V AC for main electromagnetic switches 24 V DC for the controllersCurrents The table below contains the currents and used fuses. Unit Nominal current Maximum current Fuses 3 x 20 gL/gG EUWAN5KAZW1 7.7 A 11.2 A 3 x 25 gL/gG EUWAP5KAZW1 9.1 A 12.6 A EUWAB5KAZW1 3 x 25 gL/gG EUWAN8KAZW1 13.6 A 15.9 A 3 x 25 gL/gG EUWAP8KAZW1 15.0 A 17.3 A EUWAB8KAZW1 3 x 25 gL/gG EUWAN10KAZW1 15.9 A 18.9 A4–34 Part 4 – Commissioning and Test RunESiE04-03 Test Run and Operation Data Unit Nominal current Maximum current Fuses 1 EUWAP10KAZW1 17.3 A 20.3 A 3 x 32 gL/gG EUWAB10KAZW1 3 EUWAN12KAZW1 20.5 A 26.9 A 3 x 40 gL/gG 4 EUWAP12KAZW1 21.9 A 28.3 A 3 x 40 gL/gG 5 EUWAB12KAZW1 EUWAN16KAZW1 27.2 A 31.8 A 3 x 40 gL/gG EUWAP16KAZW1 29.2 A 33.8 A 3 x 50 gL/gG EUWAB16KAZW1 EUWAN20KAZW1 31.8 A 37.8 A 3 x 50 gL/gG EUWAP20KAZW1 33.8 A 39.8 A 3 x 50 gL/gG EUWAB20KAZW1 EUWAN24KAZW1 41.0 A 53.8 A 3 x 63 gL/gG EUWAP24KAZW1 43.0 A 55.8 A 3 x 63 gL/gG EUWAB24KAZW1 Recommended fuses according to IEC standard 269-2: gL/gG (aM also admitted) (F1U, F2U, F3U = gL/gG)Part 4 – Commissioning and Test Run 4–35 Test Run and Operation Data ESiE04-0313454–36 Part 4 – Commissioning and Test RunESIE04-03 4 Part 5 MaintenanceIntroduction Preventive maintenance should be set up for operation at maximum capacity or to avoid damage. The 3 following chapters explain how to or when to maintain the units. It is also applicable on other types of Daikin chillers.What is in this part? This part contains the following chapters: 4 Chapter 1–Maintenance See page 5–3 55Part 5 – Maintenance 5–11 ESIE04-033 Part 5 – Maintenance5 5–2ESiE04-03 Maintenance1 Maintenance Part 5 11.1 What Is in This ChapterIntroduction As shown in the table below, we have grouped the maintenance in maintenance of the main parts 3Precautions (condenser, compressor and evaporator) and periodical checks. 55Overview Correct choices and decisions have to be made before any maintenance is done. Opening the refrigerant circuit may cause a loss of refrigerant or lead to system contamination. ■ Avoid high gas concentrations. While the heavy concentration of the refrigerant gas will raise from the floor level, good ventilation is a must. ■ Avoid all contact with open fires or hot surfaces. By high temperatures, the refrigerant gas R-407C may decompose into irritating and poisonous gas. Avoid skin and hand contact with the liquid refrigerant and protect your eyes against liquid splashes. This chapter covers the following topics: See page Topic 5–4 1.2–Maintenance of the Main Parts 5–6 1.3–Maintenance of the Control Devices 5–7 1.4–Periodical ChecksPart 5 – Maintenance 5–3 Maintenance ESiE04-03 1.2 Maintenance of the Main Parts1 Preventive A program of scheduled maintenance should be set up and followed. The items mentioned are to be maintenance used as a guide and must be used in combination with sound electrical and refrigeration workmanship to ensure trouble free operation and performance. Unit Casing Follow the below instructions to check the unit casing.3 Check if... If not, then... The paint of the unit casing is Touch-up with paint. intact. Screw the plate work down in position. All plate work is screwed down in position. Compressor Follow the instructions below to check the compressor: ■ Check crankcase heater operation. Switch of the compressor and carefully touch the crankcase55 Evaporator and condenser heater area by hand. Unit switchbox No operation can cause compressor damage when the ambient temperature reaches a low temperature. Follow the instructions below to check the evaporator and condenser: ■ Inspect the evaporator tubes or condenser plates after the first operating season. This condition indicates the required frequency of cleaning and also whether water treatment is needed in the chilled water circuit. ■ Check the air plugs and drain plugs to prevent or detect water leakage. ■ Check pressure-drop and water flow. ■ Record temperature difference between in / out and water out/ refrigerant temperature. ■ Inspect evaporator insulation. If damaged, repair to avoid water between insulation and evaporator shell. ■ Inspect water and refrigerant connections. ■ If the evaporator heater-tape is installed, check operation by direct power connection and hand-touch. ■ brush cleaning. Abnormal high condensing-pressures are an indication for periodic cleaning. Follow the instructions below to check the unit switchbox: ■ Check all power connections for tightness. ■ Check compressor motor terminals. ■ Inspect wiring for any signs of overheating (discolouring). ■ Remove all dust and debris from the switchbox. Replaced coils and components should not be left in the unit control panel. ■ Check all field-wired terminals. 5–4 Part 5 – MaintenanceESiE04-03 MaintenanceExpansion valve The expansion valve will allow the correct amount of refrigerant to enter the evaporator to match the 1 cooling load (by keeping a constant superheat). Follow the instructions below to check the expansionFlow switch andpump interlock valve. ■ Check the superheat setting. ■ Inspect the bulb / power-head capillary connection (no chaffing). ■ Inspect the equaliser line visually. ■ Inspect the feeler bulb suction pipe connection / insulation. Follow the instructions below to check the flow switch and the pump interlock. ■ Check operation by ohmmeter after disconnecting the wires to the field terminals and simulating flow and no-flow conditions. ■ Inspect the flow-switch for possible corrosion (glycol applications). Check electrical connections for 3 shunts or bridges. 55Part 5 – Maintenance 5–5 Maintenance ESiE04-03 1.3 Maintenance of the Control Devices1 Preventive A program of scheduled maintenance should be set up and followed. The items mentioned are to be maintenance used as a guide and must be used in combination with sound electrical and refrigeration workmanship to ensure trouble free operation and performance.355 5–6 Part 5 – MaintenanceESiE04-03 Maintenance1.4 Periodical Checks 1Electrical checks The table below contains the electrical checks. Inspection checks and actions Remarks Check that all electrical wiring is properly — connected and securely tightened. Check the electrical components for damage or loss. — Check if the power supply corresponds with the — identification label of the unit. Check the operation of the circuit breaker and the — 3 earth leak detector of the local supply panel. Check the operation of the safety devices. No operation can cause damage of the unit.Refrigerant checks The table below contains the refrigerant checks. Inspection checks and actions Remarks Check the refrigerant circuit. — ■ If the unit leaks, contact your dealer.Water checks The table below contains the water checks. 55 Inspection checks and actions Remarks Check the water condition. ■ Drain the water from the air release plug. Dirty water causes a cooling capacity drop ■ If the water is dirty, replace all the water in the as well as corrosion of the water heat exchanger and pipe. system. Check the water connection. — Check the water velocity. — Check the function of the flow switch. The evaporator can freeze up if the flow switch is not able to operate. Make sure that there is no air mixed in the water Even if air is removed at the beginning, air pipes. can sometimes enter later. Bleed therefore the system regularly. Check the water filter. —Part 5 – Maintenance 5–7 Maintenance ESiE04-031 Noise checks The table below contains the noise checks. Inspection checks and actions Remarks — Check for any abnormal noise. ■ Locate the noise producing section and search the cause. ■ If the cause of the noise cannot be located, contact your dealer.355 5–8 Part 5 – MaintenanceESiE04-03 Index 1C 3 4Checking the Digital Inputs and Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 3 - 17 5Checking the Power Supply and Fuses EUWA*5-24KAZW1 and EUWY*5-24KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 3 - 18Checking the Temperature Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 3 - 14Compressor Timers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 2 - 9Compressor Working Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 2 - 8Control of the function of the 4-way valve for EUWY*5-24KAZW1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 4 - 27Correction factors for glycol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 1 - 29Crankcase Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 2 - 14DDefrost Management for EUWY*5-24KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 2 - 18EElectrical Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 4 - 26Electrical Error Overview EUWA*5-24KAZW1 and EUWY*5-24KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 3 - 19Electrical Specifications EUWA*10-12KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 1 - 33 EUWA*16-20KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 1 - 35 EUWA*24KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 1 - 37 EUWA*5-8KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 1 - 31 EUWY*10-12KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 1 - 41 EUWY*16-20KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 1 - 43 EUWY*24KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 1 - 45 EUWY*5-8KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 1 - 39Evaporator Heater Tape Management EUWA*5-24KAZW1 and EUWY*5-24KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 2 - 15External Static Pressure EUWA*16-24KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 4 - 10 EUWA*5-12KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 4 - 8 EUWY*16-24KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 4 - 14 EUWY*5-12KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 4 - 12FFan Working EUWA*5-24KAZW1 and EUWY*5-24KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 2 - 13Freeze-up Control EUWA*5-24KAZW1 and EUWY*5-24KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 2 - 17Functional Diagram Refrigeration Circuit EUWA*5-24KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 1 - 65 EUWY*5-24KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 1 - 68GGeneral Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 4 - 4General Repair Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 3 - 26Index i ESiE04-031 H3 Head Pressure Control45 EUWA*5-24KAZW1 and EUWY*5-24KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 2 - 11 I I/O PCB sensors R3T and R4T for EUWA*5-24KAZW1 and EUWY*5-24KAZW1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 3 - 15 R6T, R7T and R8T for EUWA*5-24KAZW1 and EUWY*5-24KAZW1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 3 - 16 Inputs and Outputs Overview EUWA*5-24KAZW1 and EUWY*5-24KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 3 - 4 Inputs/outputs overview of the I/O PCB EUWA*5-24KAZW1 and EUWY*5-24KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 3 - 5 Installation outline. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 1 - 64 Items to Be Checked . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 3 - 24 M Main Functions of the EUWA*5-24KAZW1 and EUWY*5-24KAZW1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 1 - 72 Maintenance of the Control Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 5 - 6 Maintenance of the Main Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 5 - 4 Malfunction Indications Overview EUWA*5-24KAZW1 and EUWY*5-24KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 3 - 8 O Operational Flow Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 2 - 7 Operational Range EUWA*5-24KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 2 - 4 EUWY*5-24KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 2 - 5 Outlook Drawing EUWAB10-12KAZW1/EUWYB10-12KAZW1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 1 - 53 EUWAB16KAZW1/EUWAB16KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 1 - 57 EUWAB20-24KAZW1/EUWYB20-24KAZW1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 1 - 61 EUWAB5-8KAZW1/EUWYB5-8KAZW1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 1 - 49 EUWAN10-12KAZW1/EUWYN10-12KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 1 - 50 EUWAN16KAZW1/EUWYN16KAZW1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 1 - 55 EUWAN20-24KAZW1/EUWYN20-24KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 1 - 58 EUWAN5-8KAZW1/EUWYN5-8KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 1 - 47 EUWAP10-12KAZW1/EUWYP10-12KAZW1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 1 - 51 EUWAP16KAZW1/EUWYP16KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 1 - 56 EUWAP20-24KAZW1/EUWYP20-24KAZW1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 1 - 59 EUWAP5-8KAZW1/EUWYP5-8KAZW1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 1 - 48 P PCB Layout of the EUWA*5-24KAZW1 and EUWY*5-24KAZW1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 1 - 75 Periodical Checks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 5 - 7 Pump Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 2 - 16 R Reading or Adjusting Parameter Settings the Programming Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 2 - 33 Replacing the Controller EUWA*5-24KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 3 - 28 EUWY*5-24KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 3 - 33 Replacing the PCB EUWA*5-24KAZW1 and EUWY*5-24KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 3 - 39 ii IndexESiE04-03S 1Safeties Overview 3 4 EUWA*5-24KAZW1 and EUWY*5-24KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 3 - 10 5Settings Direct and User Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 2 - 31Soft Starter (option EKSS) Thermal Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 3 - 40Start/Stop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 2 - 28Static Pressure of the Pump for EUWA*5-24KAZW1 and EUWY*5-24KAZW1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 4 - 16Switch Box Layout EUWA*5-24KAZW1 and EUWY*5-24KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 1 - 73TTechnical Specifications EUWA*10-12KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 1 - 8 EUWA*16-20KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 1 - 11 EUWA*24KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 1 - 14 EUWA*5-8KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 1 - 5 EUWY*10-12KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 1 - 20 EUWY*16-20KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 1 - 23 EUWY*24KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 1 - 26 EUWY*5-8KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 1 - 17Test Run and Operation Data for EUWA*5-24KAZW1 and EUWY*5-24KAZW1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 4 - 34The Digital Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 2 - 26Thermostat Control EUWA*5-24KAZW1 and EUWY*5-24KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 2 - 10UUnlocking the Keyboard. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 3 - 27WWater Piping Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 4 - 5Water Pressure Drop through Evaporator EUWA*16-24KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 4 - 20 EUWA*5-12KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 4 - 18 EUWY*16-24KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 4 - 24 EUWY*5-12KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 4 - 22What Happens in Case of an Alarm or a Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 2 - 30Wiring Diagram EUWA*5-24KAZW1 and EUWY*5-24KAZW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k 1 - 79Index iii1 ESiE04-033 Index45 iv Daikin Europe N.V. is approved by LRQA for its Quality Daikin units comply with the European regulations that Management System in accordance with the ISO9001 guarantee the safety of the product. standard. ISO9001 pertains to quality assurance regarding design, development, manufacturing as well Daikin Europe N.V. participates in the Eurovent as to services related to the product. Certification Programme for Air Conditioners (AC), Liquid Chilling Packages (LCP) and Fan Coil Units (FC); ISO14001 assures an effective environmental the certified data of certified models are listed in the management system in order to help protect human Eurovent Directory. health and the environment from the potential impact of our activities, products and services and to assist in maintaining and improving the quality of the environment. Specifications are subject to change without prior noticeZandvoordestraat 300 ESiE04-03 • 07/2005B-8400 Ostend - Belgium Prepared in Belgium by Lannoowww.daikineurope.com