Daikin EUWL KZW1 Series User manual

ESIE-0303
Table of Contents i
3
4
5
1
Table of Contents
1Introduction
1.1 About This Manual .................................................................................. i–v
Part 1
System Outline
1 General Outline
1.1 What Is in This Chapter? ........................................................................ 1–3
1.2 Technical Specifications: EUW5-10KZW1 .............................................. 1–4
1.3 Technical Specifications: EUW12-20KZW1............................................ 1–6
1.4 Technical Specifications: EUW24KZW1 ................................................. 1–8
1.5 Technical Specifications: EUWL5-10KZW1............................................ 1–10
1.6 Technical Specifications: EUWL12-20KZW1.......................................... 1–12
1.7 Technical Specifications: EUWL24KZW1 ............................................... 1–14
1.8 Electrical Specifications: EUW5-10KZW1............................................... 1–16
1.9 Electrical Specifications: EUW12-20KZW1............................................. 1–17
1.10 Electrical Specifications: EUW24KZW1.................................................. 1–18
1.11 Electrical Specifications: EUWL5-10KZW1............................................. 1–19
1.12 Electrical Specifications: EUWL12-20KZW1........................................... 1–20
1.13 Electrical Specifications: EUWL24KZW1................................................ 1–21
1.14 Outlook Drawing: EUW5-8-10-12KZW1 ................................................. 1–22
1.15 Outlook Drawing: EUW16-20-24KZW1................................................... 1–24
1.16 Outlook Drawing: EUWL5-8-10-12KZW1 ............................................... 1–26
1.17 Outlook Drawing: EUWL16-20-24KZW1................................................. 1–27
2 Piping Layout
2.1 What Is in This Chapter? ........................................................................ 1–29
2.2 Functional Diagram Refrigeration and Water Circuit:
EUW5-8-10-12KZW1 .............................................................................. 1–30
2.3 Functional Diagram Refrigeration and Water Circuit:
EUW16-20-24KZW1 ............................................................................... 1–33
2.4 Functional Diagram Refrigeration and Water Circuit:
EUWL5-8-10-12KZW1 ............................................................................ 1–36
2.5 Functional Diagram Refrigeration and Water Circuit:
EUWL16-20-24KZW1 ............................................................................. 1–39

ESIE-0303
ii Table of Contents
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3 Wiring Layout
3.1 What Is in This Chapter? ......................................................................... 1–43
3.2 Main Functions of the EUW5-24KZW1 and EUWL5-24KZW1 ................ 1–44
3.3 Switch Box Layout: EUW5-12KZW1........................................................ 1–45
3.4 Switch Box Layout: EUW16-24KZW1...................................................... 1–47
3.5 PCB Layout of the EUW5-24KZW1 and EUWL5-24KZW1...................... 1–49
3.6 Wiring Diagram ........................................................................................ 1–53
Part 2
Functional Description
1 Functional Description
1.1 What Is in This Chapter? ......................................................................... 2–3
1.2 Operational Range: EUW5-24KZW1 ....................................................... 2–4
1.3 Operational Range: EUWL5-24KZW1 ..................................................... 2–5
1.4 Compressor Working Status.................................................................... 2–6
1.5 Compressor Timers ................................................................................. 2–7
1.6 Thermostat Control: EUW5-24KZW1 and EUWL5-24KZW1 ................... 2–8
1.7 Pump Steering ......................................................................................... 2–9
1.8 Freeze-up Control.................................................................................... 2–10
2 The Digital Controller: EUW5-24KZW1 and EUWL5-24KZW1
2.1 What Is in This Chapter? ......................................................................... 2–11
2.2 The Digital Controller ............................................................................... 2–12
2.3 Start/Stop................................................................................................. 2–14
2.4 What Happens in Case of an Alarm or a Warning................................... 2–16
2.5 Settings: Direct and User Parameters ..................................................... 2–17
2.6 Reading or Adjusting Parameter Settings: the Programming Procedure 2–19
Part 3
Troubleshooting
1 Inputs and Outputs Overview
1.1 What Is in This Chapter? ......................................................................... 3–3
1.2 Inputs and Outputs Overview: EUW5-24KZW1 and EUWL5-24KZW1 ... 3–4

ESIE-0303
Table of Contents iii
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1
2 Malfunction Indications and Safeties Overview
2.1 What Is in This Chapter? ........................................................................ 3–7
2.2 Malfunction Indications Overview ........................................................... 3–8
2.3 Safeties Overview ................................................................................... 3–10
3 Checking the Inputs and Outputs
3.1 What is in This Chapter?......................................................................... 3–13
3.2 Checking the Temperature Sensors ....................................................... 3–14
3.3 Controller Sensors: R3T, R4T and R5T.................................................. 3–15
3.4 Checking the Digital Inputs and Outputs................................................. 3–16
3.5 Checking the Power Supply and Fuses .................................................. 3–17
4 Troubleshooting
4.1 What Is in This Chapter? ........................................................................ 3–19
4.2 Items to Be Checked............................................................................... 3–20
4.3 General Repair Procedures .................................................................... 3–22
4.4 Unlocking the Keyboard.......................................................................... 3–23
4.5 Replacing the Controller ......................................................................... 3–24
4.6 Replacing the PCB: EUW5-24KZW1 and EUWL5-24KZW1................... 3–29
Part 4
Commissioning and Test Run
1 Pre-Test Run Checks
1.1 What Is in This Chapter? ........................................................................ 4–3
1.2 General Checks ...................................................................................... 4–4
1.3 Water Piping Checks .............................................................................. 4–5
1.4 Water Pressure Drop: EUW5-12KZW1................................................... 4–8
1.5 Water Pressure Drop: EUW16-24KZW1................................................. 4–9
1.6 Water Pressure Drop: EUWL5-24KZW1................................................. 4–10
1.7 Setting of the Flow Switch....................................................................... 4–12
1.8 Electrical Checks .................................................................................... 4–14

ESIE-0303
iv Table of Contents
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2 Test Run and Operation Data
2.1 What Is in This Chapter? ......................................................................... 4–15
2.2 Currents and Used Fuses........................................................................ 4–16
Part 5
Maintenance
1 Maintenance
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

ESIE-0303 Introduction
v
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Part 0
1 Introduction
1.1 About This Manual
Target group This service manual is intended for and should only be used by qualified engineers.
Purpose of this
manual
This service manual contains all the information you need to carry out the necessary repair and
maintenance tasks for the EUW5-24KZW1.
EUW5-24KZW1 The Daikin EUW5-24KZ water-cooled water chillers:
■Are designed for indoor installation.
■Are used for cooling and heating applications.
■Are available in seven standard sizes with nominal cooling capacities ranging from 13 kW to
65 kW.
EUWL5-24KZW1 The Daikin EUWL5-24KZ water/air-cooled water chillers:
■Are designed for indoor installation.
■Are used for cooling and heating applications.
■Are available in seven standard sizes with nominal cooling capacities ranging from 12.1 kW to
62.4 kW.
Before starting up
the unit
Before starting up the unit for the first time, make sure it has been properly installed. See "Pre-Test
Run Checks" on page 4–3.

Introduction ESIE-0303
vi
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ESIE-0303
Part 1 – System Outline 1–1
4
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1
Part 1
System Outline
Introduction This part contains an outline of all the relevant elements in the EUW5-24KZW1 and EUWL5-24KZW1
installation.
What is in this part? This part contains the following chapters:
Chapter See page
1–General Outline 1–3
2–Piping Layout 1–29
3–Wiring Layout 1–43

ESIE-0303
1–2 Part 1 – System Outline
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ESIE-0303 General Outline
Part 1 – System Outline 1–3
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Part 1
1 General Outline
1.1 What Is in This Chapter?
Introduction This chapter contains the following information:
■Technical specifications
■Electrical specifications
■Installation outline of a typical installation
■Outlook drawings: outlook, dimensions, installation and service space.
Overview This chapter contains the following topics:
Topic See page
1.2–Technical Specifications: EUW5-10KZW1 1–4
1.3–Technical Specifications: EUW12-20KZW1 1–6
1.4–Technical Specifications: EUW24KZW1 1–8
1.5–Technical Specifications: EUWL5-10KZW1 1–10
1.6–Technical Specifications: EUWL12-20KZW1 1–12
1.7–Technical Specifications: EUWL24KZW1 1–14
1.8–Electrical Specifications: EUW5-10KZW1 1–16
1.9–Electrical Specifications: EUW12-20KZW1 1–17
1.10–Electrical Specifications: EUW24KZW1 1–18
1.11–Electrical Specifications: EUWL5-10KZW1 1–19
1.12–Electrical Specifications: EUWL12-20KZW1 1–20
1.13–Electrical Specifications: EUWL24KZW1 1–21
1.14–Outlook Drawing: EUW5-8-10-12KZW1 1–22
1.15–Outlook Drawing: EUW16-20-24KZW1 1–24
1.16–Outlook Drawing: EUWL5-8-10-12KZW1 1–26
1.17–Outlook Drawing: EUWL16-20-24KZW1 1–27

General Outline ESIE-0303
1–4 Part 1 – System Outline
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1.2 Technical Specifications: EUW5-10KZW1
Technical
specifications
The table below contains the technical specifications.
Model EUW5KZW1 EUW8KZW1 EUW10KZW1
Nominal cooling
capacity
13.0 kW 21.5 kW 28.0 kW
Nominal cooling input 3.71 kW 5.96 kW 7.76 kW
Capacity steps 1
Compressor
Type Hermetically sealed scroll
Speed 2900 rpm
No. x model 1 x JT140BF-YE 1 x JT212DA-YE 1 x JT300DA-YE
Evaporator
Type Brazed plate-heat exchanger
Min.water volume in
the system (1)
62 l 103 l 134 l
No. x model
Water flow rate Min.: 19 l/min
Max.: 75 l/min
Min.: 31 l/min
Max.: 123 l/min
Min.: 40 l/min
Max.: 161 l/min
Nominal water flow 37 l/min 62 l/min 80 l/min
Nominal water
pressure drop
kPa kPa kPa
Insulation material Polyethylene foam
Condenser
Type Brazed plate-heat exchanger
No. x model
Water flow rate Min.: 24 l/min
Max.: 95 l/min
Min.: 39 l/min
Max.: 157 l/min
Min.: 51 l/min
Max.: 203 l/min
Nominal water flow 48 l/min 78 l/min 102 l/min
Nominal water
pressure drop
Piping connections
Evap. water in/outlet
Cond. water in/outlet
FBSP 25
Refrigerant circuit
Refrigerant type R-407C
Refrigerant charge 1.2 kg 2.0 kg 2.3 kg
Refrigerant control Thermostatic expansion valve
Oil type Idemitsu FVC 68D
Dimensions
(h x w x d)
600 x 600 x 600 mm
Weight
Machine weight 113 kg 150 kg 160 kg
Operation weight kg kg kg

ESIE-0303 General Outline
Part 1 – System Outline 1–5
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(1): The table below contains the minimum water volume settings.
(2): The sound power level is an absolute value that does not depend on the surroundings or the
distance (ISO 9614). It cannot be measured in the field
Nominal conditions The nominal conditions are as follows:
■Entering/leaving evaporator water temperature 12/7°C, ambient air temperature 35°C,
■Entering/leaving condenser water temperature 30/35°, ambient temperature 7°C DB/6°C WB
■Power input is total input: Compressor + control circuit + pumps.
Operation range The nominal operation range covers a leaving evaporator water temperature from 5°C (-5°C/ -10°C
with ZH/ ZL option) to 20°C and a leaving condenser water temperature from 20°C to 55°C.
Casing
Material Polyester coated / galvanised steel plate
Colour Ivory white / Munsell code 5Y7.5/1 / ± RAL 7044
Sound power level (2) 64 dB
Safety devices
■Low-pressure switch
■High-pressure switch
■Evaporating temperature protection
■Discharge temperature protection
■Outlet water temperature protection
■Compressor motor overcurrent relay
■Anti-recycling and guard timer
■Digital display controller with electronic temperature control
■Reverse phase protector
■Internal fuses.
Setting EUW5-10KZW1
The minimum water volume for standard thermostat difference setting 3 K
For reduced setting multiply this water volume by 3/new setting
Minimum allowable setting 0.1 K
Model EUW5KZW1 EUW8KZW1 EUW10KZW1

General Outline ESIE-0303
1–6 Part 1 – System Outline
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1.3 Technical Specifications: EUW12-20KZW1
Technical
specifications
The table below contains the technical specifications.
Model EUW12KZW1 EUW16KZW1 EUW20KZW1
Nominal cooling
capacity
32.5 kW 43.0 kW 56.0 kW
Nominal cooling input 9.1 kW 12.1 kW 16.0 kW
Capacity steps 1 2
Compressor
Type Hermetically sealed scroll
Speed 2900 rpm
No. x model 1 x JT335DA-YE 2 x JT212DA-YE 2 x JT300DA-YE
Evaporator
Type Brazed plate-heat exchanger
Min.water volume in
the system (1)
155 l 205 l 268 l
No. x model
Water flow rate Min.: 47 l/min
Max.: 186 l/min
Min.: 62 l/min
Max.: 247 l/min
Min.: 80 l/min
Max.: 321 l/min
Nominal water flow 93 l/min 123 l/min 161 l/min
Nominal water
pressure drop
kPa kPa kPa
Insulation material Polyethylene foam
Condenser
Type Brazed plate-heat exchanger
No. x model
Water flow rate Min.: 59 l/min
Max.: 237 l/min
Min.: 79 l/min
Max.: 314 l/min
Min.: 102 l/min
Max.: 410 l/min
Nominal water flow 118 l/min 157 l/min 205 l/min
Nominal water
pressure drop
Piping connections
Evap. water in/outlet
Cond. water in/outlet
FBSP 25 FBSP 40
Refrigerant circuit
Refrigerant type R-407C
Refrigerant charge 2.7 kg 2 x 2.3 kg 2 x 2.3 kg
Refrigerant control Thermostatic expansion valve
Oil type Idemitsu FVC 68D
Dimensions
(h x w x d)
600 x 600 x 600 mm 600 x 600 x 1200 mm
Weight
Machine weight 167 kg 300 kg 320 kg
Operation weight kg kg kg

ESIE-0303 General Outline
Part 1 – System Outline 1–7
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(1): The table below contains the minimum water volume settings.
(2): The sound power level is an absolute value that does not depend on the surroundings or the
distance (ISO 9614). It cannot be measured in the field
Nominal conditions The nominal conditions are as follows:
■Entering/leaving evaporator water temperature 12/7°C, ambient air temperature 35°C,
■Entering/leaving condenser water temperature 30/35°, ambient temperature 7°C DB/6°C WB
■Power input is total input: Compressor + control circuit + pumps.
Operation range The nominal operation range covers a leaving evaporator water temperature from 5°C (-5°C/ -10°C
with ZH/ ZL option) to 20°C and a leaving condenser water temperature from 20°C to 55°C.
Casing
Material Polyester coated / galvanised steel plate
Colour Ivory white / Munsell code 5Y7.5/1 / ± RAL 7044
Sound power level (2) 71 dB 67 dB
Safety devices
■Low-pressure switch
■High-pressure switch
■Evaporating temperature protection
■Discharge temperature protection
■Outlet water temperature protection
■Compressor motor overcurrent relay
■Anti-recycling and guard timer
■Digital display controller with electronic temperature control
■Reverse phase protector
■Internal fuses.
Setting EUW12-20KZW1
The minimum water volume for standard thermostat difference setting 3 K
For reduced setting multiply this water volume by 3/new setting
Minimum allowable setting 0.1 K
Model EUW12KZW1 EUW16KZW1 EUW20KZW1

General Outline ESIE-0303
1–8 Part 1 – System Outline
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1.4 Technical Specifications: EUW24KZW1
Technical
specifications
The table below contains the technical specifications.
Model EUW24KZW1
Nominal cooling capacity 65.0 kW
Nominal cooling input 18.3 kW
Capacity steps 2
Compressor
Type Hermetically sealed scroll
Speed 2900 rpm
No. x model 2 x JT335DA-YE
Evaporator
Type Brazed plate-heat exchanger
Min.water volume in the system (1) 311 l
No. x model
Water flow rate Min.: 93 l/min
Max.: 373 l/min
Nominal water flow 186 l/min
Nominal water
pressure drop
kPa
Insulation material Polyethylene foam
Condenser
Type Brazed plate-heat exchanger
No. x model
Water flow rate Min.: 118 l/min
Max.: 474 l/min
Nominal water flow 237 l/min
Nominal water
pressure drop
Piping connections
Evap. water in/outlet
Cond. water in/outlet
FBSP 40
Refrigerant circuit
Refrigerant type R-407C
Refrigerant charge 2 x 2.8 kg
Refrigerant control Thermostatic expansion valve
Oil type Idemitsu FVC 68D
Dimensions
(h x w x d)
600 x 600 x 1200 mm
Weight
Machine weight 334 kg
Operation weight kg
Casing

ESIE-0303 General Outline
Part 1 – System Outline 1–9
3
1
4
5
(1): The table below contains the minimum water volume settings.
(2): The sound power level is an absolute value that does not depend on the surroundings or the
distance (ISO 9614). It cannot be measured in the field
Nominal conditions The nominal conditions are as follows:
■Entering/leaving evaporator water temperature 12/7°C, ambient air temperature 35°C,
■Entering/leaving condenser water temperature 30/35°, ambient temperature 7°C DB/6°C WB
■Power input is total input: Compressor + control circuit + pumps.
Operation range The nominal operation range covers a leaving evaporator water temperature from 5°C (-5°C/ -10°C
with ZH/ ZL option) to 20°C and a leaving condenser water temperature from 20°C to 55°C.
Material Polyester coated / galvanised steel plate
Colour Ivory white / Munsell code 5Y7.5/1 / ± RAL 7044
Sound power level (2) 74 dB
Safety devices
■Low-pressure switch
■High-pressure switch
■Evaporating temperature protection
■Discharge temperature protection
■Outlet water temperature protection
■Compressor motor overcurrent relay
■Anti-recycling and guard timer
■Digital display controller with electronic
temperature control
■Reverse phase protector
■Internal fuses.
Setting EUW24KZW1
The minimum water volume for standard thermostat difference setting 3 K
For reduced setting multiply this water volume by 3/new setting
Minimum allowable setting 0.1 K
Model EUW24KZW1

General Outline ESIE-0303
1–10 Part 1 – System Outline
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1.5 Technical Specifications: EUWL5-10KZW1
Technical
specifications
The table below contains the technical specifications.
Model EUWL5KZW1 EUWL8KZW1 EUWL10KZW1
Nominal cooling
capacity
12.1 kW 20.0 kW 26.8 kW
Nominal cooling input 4.2 kW 6.7 kW 8.7 kW
Capacity steps 1
Compressor
Type Hermetically sealed scroll
Speed 2900 rpm
Crankcase heater 1 x 33 W
No. x model 1 x JT140BF-YE 1 x JT212DA-YE 1 x JT300DA-YE
Evaporator
Type Brazed plate-heat exchanger
Min.water volume in
the system (1)
62 l 103 l 134 l
No. x model
Water flow rate Min.: 17 l/min
Max.: 69 l/min
Min.: 29 l/min
Max.: 115 l/min
Min.: 38 l/min
Max.: 153 l/min
Nominal water flow 35 l/min 57 l/min 77 l/min
Nominal water
pressure drop
kPa kPa kPa
Insulation material Polyethylene foam
Condenser
Type
Piping connections
Evap. water in/outlet FBSP 25
Evaporator drain purge Field installed
Discharge connection 12.7 mm flare 19.1 mm flare 19.1 mm flare
Liquid connection 9.52 mm flare 12.7 mm flare 12.7 mm flare
Max. lenght/circuit (3) 50 mm
Max. height/circuit (3) 30 mm
Refrigerant circuit
Refrigerant type R-407C
Refrigerant charge N2holding charge
Refrigerant control Thermostatic expansion valve
Oil type Idemitsu FVC 68D
Refrigerant charge
formular (4)
0.9+(0.06xLLP)+
(VRC x 0.38)
1.5 + (0.12 x LLP) +
(VRC x 0.38)
1.7 + (0.12 x LLP) +
(VRC x 0.38)
Dimensions
(h x w x d)
600 x 600 x 600 mm

ESIE-0303 General Outline
Part 1 – System Outline 1–11
3
1
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(1): The table below contains the minimum water volume settings.
(2): The sound power level is an absolute value that does not depend on the surroundings or the
distance (ISO 9614). It cannot be measured in the field
(3): Explanation of the length and height:
Height = Height difference between the unit and the remote condenser.
Length = Total length of liquid line or discharge line.
(4): Explanation of the formula:
VRC = Volume Remote condenser (l).
LLP = Length Liquid Piping (m).
Nominal conditions The nominal conditions are as follows:
■Entering/leaving evaporator water temperature 12/7°C
■Condensing temperature bubble = 45°C (5)
■Liquid temperature = 40°C
(5): This temperature corresponds with the compressor discharge pressure.
Operation range The operation range covers a leaving evaporator water temperature from 5°C
(-5°C/ -10°C with ZH/ ZL option) to 20°C.
Weight
Machine weight 104 kg 138 kg 144 kg
Casing
Material Polyester coated / galvanised steel plate
Colour Ivory white / Munsell code 5Y7.5/1 / ± RAL 7044
Sound power level (2) 64 dB
Safety devices
■Low-pressure switch
■High-pressure switch
■Evaporating temperature protection
■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
■Internal fuses.
Setting EUWL5-10KZW1
The minimum water volume for standard thermostat difference setting 3 K
For reduced setting multiply this water volume by 3/new setting
Minimum allowable setting 0.1 K
Model EUWL5KZW1 EUWL8KZW1 EUWL10KZW1

General Outline ESIE-0303
1–12 Part 1 – System Outline
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1.6 Technical Specifications: EUWL12-20KZW1
Technical
specifications
The table below contains the technical specifications.
Model EUWL12KZW1 EUWL16KZW1 EUWL20KZW1
Nominal cooling
capacity
31.2 kW 40.0 kW 53.7 kW
Nominal cooling input 10.2 kW 13.5 kW 18.0 kW
Capacity steps 1 2
Compressor
Type Hermetically sealed scroll
Speed 2900 rpm
Crankcase heater 1 x 33 W 2 x 33 W
No. x model 1 x JT335DA-YE 2 x JT212DA-YE 2 x JT300DA-YE
Evaporator
Type Brazed plate-heat exchanger
Min.water volume in
the system (1)
155 l 205 l 268 l
No. x model
Water flow rate Min.: 45 l/min
Max.: 179 l/min
Min.: 57 l/min
Max.: 229 l/min
Min.: 77 l/min
Max.: 307 l/min
Nominal water flow 89 l/min 115 l/min 154 l/min
Nominal water
pressure drop
kPa kPa kPa
Insulation material Polyethylene foam
Condenser
Type
Piping connections
Evap. water in/outlet FBSP 25 FBSP 40
Evaporator drain purge Field installed
Discharge connection 19.1 mm flare 2 x 19.1 mm flare 2 x 19.1 mm flare
Liquid connection 12.7 mm flare 2 x 12.7 mm flare 2 x 12.7 mm flare
Max. lenght/circuit (3) 50 mm
Max. height/circuit (3) 30 mm
Refrigerant circuit
Refrigerant type R-407C
Refrigerant charge N2holding charge
Refrigerant control Thermostatic expansion valve
Oil type Idemitsu FVC 68D
Refrigerant charge
formula (4)
2.0+(0.12xLLP)+
(VRC x 0.38)
See 2 x 8HP See 2 x 10HP
Dimensions
(h x w x d)
600 x 600 x 600 mm 600 x 600 x 1200 mm