Daikin EUWA/Y5-30HB/C(Z) Service Manual
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Daikin EUWA/Y5-30HB/C(Z) Service Manual

Daikin EUWA/Y5-30HB/C(Z) Service Manual

Small air-cooled water chillers
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Service Manual
EUWA/Y5-30HB/C(Z)
Small air-cooled water chillers
Daikin Europe NV
CHILLER
6
3
2
H
C
C
H
1
5
8
9
T1
T2
P1
P2
16
15
7
4
7
9
10
14
13
ESIE98-06A
SECONDARY WATER CIRCUIT
SECONDARY WATER CIRCUIT
12
11
11
PRIMARY WATER CIRCUIT
PRIMARY WATER CIRCUIT

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Summary of Contents for Daikin EUWA/Y5-30HB/C(Z)

  • Page 1 ESIE98-06A CHILLER SECONDARY WATER CIRCUIT SECONDARY WATER CIRCUIT PRIMARY WATER CIRCUIT PRIMARY WATER CIRCUIT Service Manual EUWA/Y5-30HB/C(Z) Small air-cooled water chillers Daikin Europe NV...

  • Page 3: Table Of Contents

    ESIE98–06A Table of Contents Introduction 1.1 About This Manual ......................v Part 1 System Outline 1-1 General Outline 1.1 What Is in This Chapter .....................1-3 1.2 Technical Specifications ....................1-4 1.3 Electrical specifications ....................1-10 1.4 Outlook Drawing ......................1-13 Piping Layout 2.1 What Is in This Chapter ...................1-21 2.2 Functional Diagram Refrigeration Circuit for EUWA5-30HB/C(Z)......1-22 2.3 Main Parts Refrigeration Circuit for EUWA5-30HB/C(Z)..........1-24 2.4 Functional Diagram Refrigeration Circuit for EUWY5-30HB/C,...
  • Page 4 ESIE98–06A Part 2 Functional Description 2-1 Functional Control 1.1 What Is in This Chapter ..................... 2-3 1.2 Operation Range ....................... 2-4 1.3 Operation Flowchart....................2-6 1.4 Defrost Principle (only for EUWY5-30HB/C(Z)) ............2-7 1.5 Defrost Circuit Control....................2-9 1.6 Thermostat Control ....................2-11 1.7 Head Pressure Control for EUWA/Y5-10HB(Z) ............2-12 1.8 Head Pressure Control for EUWA/Y15-30HC(Z) .............2-13 1.9 Freeze-up Control ....................2-14...
  • Page 5 ESIE98–06A Part 3 Troubleshooting 3-1 Overview of Inputs and Outputs 1.1 What Is in This Chapter .....................3-3 1.2 Overview of Inputs and Outputs of EUWA/Y5-10HB(Z)..........3-4 1.3 Overview of Inputs and Outputs of EUWA/Y15-30HC(Z)...........3-5 Overview of Fault Indications and Safeties 2.1 What Is in this Chapter....................3-7 2.2 Fault Indication EUWA/Y5-10HB(Z)................3-8 2.3 Fault Indication EUWA/Y15-30HC(Z)...............3-10 2.4 Safeties Overview ....................3-12...
  • Page 6 ESIE98–06A Part 4 Commissioning and Test Run 4-1 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 Electrical Checks ....................... 4-7 Test Run & Operation Data Part 5 Maintenance 5-1 Index i...

  • Page 7: Introduction

    The EUWA5-30HB/C(Z) units are available in 6 standard sizes with nominal cooling capacities ranging from 10.1 to 63 kW. The EUWA/Y5-30HB/C(Z) units can be combined with Daikin fan coil units or air handling units for air conditioning purposes. They can also be used to supply water for process cooling or heating.
  • Page 8 Introduction ESIE98–06A...

  • Page 9: System Outline

    ESIE98–06A Part 1 System Outline Introduction The purpose of this part is to give an outline of all the relevant elements in the installation of the EUWA/Y5-30HB/C(Z) chiller types. Once all the elements of the installation are briefly described and the installation set-up is understood, a functional description of all elements will be given in the next parts of this book.
  • Page 10 ESIE98–06A 1–2 Part 1 – System Outline...

  • Page 11: General Outline

    ESIE98–06A General Outline Part 1 General Outline What Is in This Chapter Introduction In this chapter you will find the outlook drawing and the installation outline of the water chillers EUWA/Y5-30HB/C(Z). Overview This chapter covers the following topics: Topic See page 1.2 –...

  • Page 12: Technical Specifications

    General Outline ESIE98–06A Technical Specifications EUWA5-30HB/C In the following table you will find the technical specifications of the air-cooled-water chiller types EUWA5-30HB/C: Model EUWA5HB EUWA8HB EUWA10HB EUWA15HC EUWA20HC EUWA25HC EUWA30HC Nominal cooling capacity 9.3 kW 18.3 kW 21.6 kW 30.7 kW 43.6 kW 52.9 kW 65.2 kW...
  • Page 13 ESIE98–06A General Outline Model EUWA5HB EUWA8HB EUWA10HB EUWA15HC EUWA20HC EUWA25HC EUWA30HC refrigerant charge 3.6 kg 5.1 kg 5.9 kg 5.9+3.6 kg 2x5.9 kg 2x5.9+3.6 kg 3x5.9 kg refrigerant control capillary tube oil type SUNISO 4GSDID-K Dimensions 1444 x 645 x 1220 x 1290x 1444 x1290 x 1535 x 1930 x...
  • Page 14 General Outline ESIE98–06A EUWY5-30HB/C In the following table you will find the technical specifications of the air-cooled-water chiller types EUWY5-30HB/C: Model EUWY5HB EUWY8HB EUWY10HB EUWY15HC EUWY20HC EUWY25HC EUWY30HC Nominal capacity cooling 9.1 kW 17.7 kW 21 kW 30 kW 42.4 kW 51.5 kW 63.4 kW heating...
  • Page 15 ESIE98–06A General Outline Model EUWY5HB EUWY8HB EUWY10HB EUWY15HC EUWY20HC EUWY25HC EUWY30HC refrigerant charge 3.6 kg 5.1 kg 5.9 kg 5.9+3.6 kg 2x5.9 kg 2x5.9+3.6 kg 3x5.9 kg refrigerant control capillary tube oil type SUNISO 4GSDID-K oil charge volume 1.5 l 2.7 l 2.7 l 2.7+1.5 l...
  • Page 16 General Outline ESIE98–06A EUWA5-30HB/CZ In the following table you will find the technical specifications of air-cooled-water chiller types EUWA5-30HB/CZ: Model EUWA5HBZ EUWA8HBZ EUWA10HBZ EUWA15HCZ EUWA20HCZ EUWA25HCZ EUWA30HCZ Nominal cooling capacity 10.1 kW 17.1 kW 21 kW 31 kW 42 kW 52 kW 63 kW Nominal cooling...
  • Page 17 ESIE98–06A General Outline Model EUWA5HBZ EUWA8HBZ EUWA10HBZ EUWA15HCZ EUWA20HCZ EUWA25HCZ EUWA30HCZ refrigerant control expansion valve oil type FVC68D FVC68D FVC68D FVC68D FVC68D FVC68D FVC68D oil charge volume 1.5 l 2.7 l 2.7 l 2.7+1.5 l 2x2.7 l 2x2.7+1.5 l 3x2.7 l n°...

  • Page 18: Electrical Specifications

    General Outline ESIE98–06A Electrical specifications EUWA5-30HB/C In the following table you will find the electrical specifications of chiller types EUWA5-30HB/C: EUWA5HBW1 EUWA8HBW1 EUWA10HBW1 EUWA15HCW1 EUWA20HCW1 EUWA25HCW1 EUWA30HCW1 Model /EUWA5HBT1 /EUWA8HBT1 /EUWA10HBT1 /EUWA15HCT1 /EUWA20HCT1 /EUWA25HCT1 /EUWA30HCT1 Compressor phase Voltage 220 - 380 V starting current 49 A/88 A 79 A/142 A...
  • Page 19 ESIE98–06A General Outline EUWY5-30HB/C In the following table you will find the electrical specifications of chiller types EUWY5-30HB/C: Model EUWY5HB EUWY8HB EUWY10HB EUWY15HC EUWY20HC EUWY25HC EUWY30HC Compressor phase Voltage 220 - 380 V starting current 49 A 79 A 109 A 49 A/109 A 109 A 49 A/109 A...
  • Page 20 General Outline ESIE98–06A EUWA5-30HB/CZ In the following table you will find the electrical specifications of chiller types EUWA5-30HB/CZ: Model EUWA5HBZ EUWA8HBZ EUWA10HBZ EUWA15HCZ EUWA20HCZ EUWA25HCZ EUWA30HCZ Compressor phase Voltage 220 - 380 V starting current 49 A/88 A 79 A/142 A 109 A/183 A 49 A/88 A- 109 A/183 A...

  • Page 21: Outlook Drawing

    ESIE98–06A General Outline Outlook Drawing Introduction Below you will find the outlook drawings of the EUWA/Y5-30HB/C(Z) chiller types. The diagrams indicate the following important items: dimensions service space main components location operation space EUWA/Y5HB(Z) The figure below displays the outlook of the chiller types EUWA/Y5HB(Z): Part 1 –...
  • Page 22 General Outline ESIE98–06A EUWA/Y8HB(Z) The figure below displays the outlook of the chiller types EUWA/Y8HB(Z): 1–14 Part 1 – System Outline...
  • Page 23 ESIE98–06A General Outline EUWA/Y10HB(Z) The figure below displays the outlook of the chiller types EUWA/Y10HB(Z): Part 1 – System Outline 1–15...
  • Page 24 General Outline ESIE98–06A EUWA/Y15HC(Z) The figure below displays the outlook of the chiller types EUWA/Y15HC(Z): 1–16 Part 1 – System Outline...
  • Page 25 ESIE98–06A General Outline EUWA/Y20HC(Z) The figure below displays the outlook of the chiller types EUWA/Y20HC(Z): Part 1 – System Outline 1–17...
  • Page 26 General Outline ESIE98–06A EUWA/Y25HC(Z) The figure below displays the outlook of the chiller types EUWA/Y25HC(Z): 1–18 Part 1 – System Outline...
  • Page 27 ESIE98–06A General Outline EUWA/Y30HC(Z) The figure below displays the outlook of the chiller types EUWA/Y30HC(Z): Part 1 – System Outline 1–19...
  • Page 28 General Outline ESIE98–06A 1–20 Part 1 – System Outline...

  • Page 29: Piping Layout

    ESIE98–06A Piping Layout Part 1 Piping Layout What Is in This Chapter Introduction In this chapter we will describe the internal refrigeration circuit. The water piping is considered as a common practice and is, therefore, not described. Overview This chapter covers the following topics: Topic See page 2.2 –...

  • Page 30: Functional Diagram Refrigeration Circuit For Euwa5-30Hb/C(Z)

    Piping Layout ESIE98–06A Functional Diagram Refrigeration Circuit for EUWA5-30HB/C(Z) Functional diagram The figure below displays the functional diagram of the refrigeration circuit of the chiller types EUWA5-30HB/C EUWA5-30HB/C: The numbers on the drawing refer to the numbers in the table on page 1-24. 1–22 Part 1 –...
  • Page 31 ESIE98–06A Piping Layout Functional diagram The figure below displays the functional diagram of the refrigeration circuit of the chiller types EUWA5-30HB/CZ EUWA5-30HB/C(Z) (with or without glycol application): EUWA5-10HZ t < t > t < EUWA15-20HZ t < t < t > t <...

  • Page 32: Main Parts Refrigeration Circuit For Euwa5-30Hb/C(Z)

    Piping Layout ESIE98–06A Main Parts Refrigeration Circuit for EUWA5-30HB/C(Z) Table The numbers in the table below refer to the numbers in the piping diagrams on the previous pages. N° Part name Function Compressor All compressors are hermetically sealed scroll types. Air-heat exchanger The air-heat exchanger is of the cross fin coil type.

  • Page 33: Functional Diagram Refrigeration Circuit For Euwy5-30Hb/C, Euwa5-30Hb/C With Glycol Application

    ESIE98–06A Piping Layout Functional Diagram Refrigeration Circuit for EUWY5-30HB/C, EUWA5-30HB/C with Glycol Application Functional diagram The figure below displays the functional diagram of the refrigeration circuit of the chiller types EUWY5-30HB/C EUWY5-30HB/C: EUWY5-10H t < t > t < cooling EUWY15-20H heating evaporator...
  • Page 34 Piping Layout ESIE98–06A Functional diagram The figure below displays the functional diagram of the refrigeration circuit of the chiller types EUWA5-30HB/C EUWA5-30HB/C with glycol application: (glycol application) The numbers on the drawing refer to the numbers in the table on page 1-27. 1–26 Part 1 –...

  • Page 35: Main Parts Refrigeration Circuit Euwy5-30Hb/C, Euwa5-30Hb/C With Glycol Application

    ESIE98–06A Piping Layout Main Parts Refrigeration Circuit EUWY5-30HB/C, EUWA5-30HB/C with Glycol Application Main parts The numbers in the table below refer to the numbers in the piping diagrams on the previous pages. N° Part name Function Compressor All compressors are hermetically sealed scroll types. Air-heat exchanger The air-heat exchanger is of the cross fin coil type.
  • Page 36 Piping Layout ESIE98–06A 1–28 Part 1 – System Outline...

  • Page 37: Wiring Layout

    ESIE98–06A Wiring Layout Part 1 Wiring Layout What Is in This Chapter Introduction The purpose of this chapter is to guide you through the PCBs and the wiring diagrams. Therefore, we use schematic drawings and wiring diagrams, which indicate and locate the necessary information. Overview This chapter covers the following topics: Topic...

  • Page 38: Main Functions Of The Chiller

    Wiring Layout ESIE98–06A Main functions of the chiller Main functions The figure below shows the main circuit of the chiller types EUWA/Y5-10HB(Z): EUWA/Y5-10HB(Z) line line No1 C1/2 C1/2 C3/4 x No2 No3 No4 C3/4 x No5 G0 B1 B2 B3 ID5 ID3 ID1 G GND GND Y GND ID4 ID2 MCHRTF control...
  • Page 39 ESIE98–06A Wiring Layout Con. Terminal Wiring diagram symbol Description ID1-GND S11L flow switch S10L pump contact ID2-GND remote cool/heat ID3-GND discharge temperature overcurrent ID4-GND S16T evaporator thermostat ID5-GND remote ON/OFF B1-GND sensor inlet water B2-GND sensor outlet water B3-GND sensor ambient Y1-GND C1/2-NO1 compressor...
  • Page 40 Wiring Layout ESIE98–06A Main functions The figure below shows the main PCB board of the chiller types EUWA/Y15-30HC(Z): EUWA/Y15-30HC(Z) J9 J8 +24Vcc AVSS AVSS AVSS IDCM2 ID11R ID10 ID11 ID12R ID12 IDCM1 NO11 NC11 NO10 NC10 NO13 NO12 4898 1–32 Part 1 –...
  • Page 41 ESIE98–06A Wiring Layout Wiring diagram Block Connection Description symbol ambient temperature sensor outlet water temperature sensor evaporator 1 outlet water temperature sensor evaporator 2 outlet water temperature sensor evaporator 3 evap./cond. inlet water temperature contactor for defrost circuit 1 contactor for defrost circuit 2 contactor for defrost circuit 3 S8S (field wiring) switch for dual set point...

  • Page 42: Wiring Diagrams

    Wiring Layout ESIE98–06A Wiring Diagrams Overview The wiring diagrams of the following chiller types are displayed on the pages below: Chiller type See page … EUWA5-8-10HB page 1-35 EUWY5-8-10HB page 1-36 EUWA5-8-10HBZ page 1-37 EUWA15-20HC page 1-38 EUWY15-20HC page 1-39 EUWA15-20HCZ page 1-39 EUWA25-30HC...

  • Page 43: Euwa5-8-10Hb

    ESIE98–06A Wiring Layout Wiring diagram EUWA5-8-10HB connector for digital outputs in terminal unit solenoid valve for injection line transfo 230V -> 24V for supply of controllers S25T thermostat for evaporator heatertape S24T thermostat for inlet water control S23B emergency operation selection S22S ON/OFF switch in emergency operation S19T...
  • Page 44 ESIE98–06A Wiring Layout Wiring diagram EUWA5-8-10HBZ connector for digital outputs in terminal unit solenoid valve for injection line transfo 230V -> 24V for supply of controllers S25T thermostat for evaporator heatertape S19T thermostat for liquid injection S17T auxiliary thermostat for fanspeed control S16T evaporating temperature thermostat S12S...

  • Page 45: Euwy5-8-10Hb

    ESIE98–06A Wiring Layout Wiring diagram EUWY5-8-10HB connector for digital outputs in terminal unit YRV1 reverse valve transfo 230V -> 24V for supply of controllers S16T evaporating temperature thermostat S12S main isolator switch S11L contact that closes if the pump is working S10L flowswitch switch for remote start/stop...

  • Page 46: Euwa15-20Hc

    ESIE98–06A Wiring Layout Wiring diagram EUWA15-20HC Y1S,Y2S ** solenoid valve for injection line circuit1, circuit2 X1A/X1B,X2A/X2B interconnection connector switchbox 1,switchbox 2 transfo 230V -> 24V for supply of controllers S25T thermostat for evaporator heatertape S19T,S20T ** thermostat for liquid injection circuit1, circuit2 S16T,S17T evaporating temperature thermostat circuit1, circuit2 S12S...

  • Page 47: Euwy15-20Hc

    ESIE98–06A Wiring Layout Wiring diagram EUWY15-20HC YRV1,YRV2, reverse valve circuit1, circuit2 X1A/X1B,X2A/X2B interconnection connector switchbox 1,switchbox 2 transfo 230V -> 24V for supply of controllers S16T,S17T evaporating temperature thermostat circuit1, circuit2 S13DF,S14DF defrost protector circuit 1,circuit 2 S12S # main isolator switch S11L # contact that closes if pump is working S10L #...

  • Page 48: Euwa15-20Hcz

    ESIE98–06A Wiring Layout Wiring diagram EUWA15-20HCZ Y1S,Y2S ** solenoid valve for injection line circuit1, circuit2 X1A/X1B,X2A/X2B interconnection connector switchbox 1,switchbox 2 transfo 230V -> 24V for supply of controllers S25T thermostat for evaporator heatertape S24T thermostat for inlet water control S23B emergency operation selection S22S...

  • Page 49: Euwa25-30Hc

    ESIE98–06A Wiring Layout Wiring diagram EUWA25-30HC Y1S,Y2S,Y3S ** solenoid valve for injection line circuit1, circuit2, circuit3 X3A/X4A,X3B/X4B interconnection connector switchbox 1,switchbox 3 X1A/X1B,X2A/X2B interconnection connector switchbox 1,switchbox 2 transfo 230V -> 24V for supply of controllers S25T thermostat for evaporator heatertape S24T thermostat for inlet water control S23B...
  • Page 50 ESIE98–06A Wiring Layout Wiring diagram EUWY25-30HC YRV1,YRV2,YRV3 reverse valve circuit1, circuit2, circuit3 X3A/X4A,X3B/X4B interconnection connector switchbox 1,switchbox 3 X1A/X1B,X2A/X2B interconnection connector switchbox 1,switchbox 2 transfo 230V -> 24V for supply of controllers S16T,S17T,S18T evaporating temperature thermostat circuit1, circuit2, circuit3 S13DF,S14DF,S15DF # defrost protector circuit 1,circuit 2, circuit3 S12S # main isolator switch...
  • Page 51 ESIE98–06A Wiring Layout Wiring diagram EUWA25-30HZ Y1S,Y2S,Y3S ** solenoid valve for injection line circuit1, circuit2, circuit3 X3A/X4A,X3B/X4B interconnection connector switchbox 1,switchbox 3 X1A/X1B,X2A/X2B interconnection connector switchbox 1,switchbox 2 transfo 230V -> 24V for supply of controllers S25T thermostat for evaporator heatertape S19T,S20T,S21T ** thermostat for liquid injection circuit1, circuit2, circuit3 S16T,S17T,S18T...
  • Page 52 ESIE98–06A Wiring Layout Part 1 – System Outline 1–44...

  • Page 53: Field Wiring

    ESIE98–06A Part 1 Wiring Layout Field Wiring Field wiring The table below gives an overview of all possible field wiring connections for each unit. The item components numbers will be repeated throughout the explanation to show the position on both wiring diagram and overview switch box layout.
  • Page 54 ESIE98–06A Schematic The schematic drawings on the following pages will help you to locate the field wiring connections on drawings the wiring diagrams. EUWA/Y5-10HB(Z) terminal connections Item Code (contact) Description Terminals L1/L2/L3/N/PE power supply to unit L1/L2/L3/N/PE S12S mains isolator L1/L2/L3/N/PE remote cool/heat setting 78-79...
  • Page 55 ESIE98–06A EUWA/Y15-20HC(Z) terminal connections Item Code (contact) Description Terminals L1/L2/L3/N/PE power supply to unit L1/L2/L3/N/PE S12S mains isolator L1/L2/L3/N/PE remote cool/heat setting 72-75 dual set point 71-73 remote start/stop 71-74 S10L/S11L flow switch / pump contact 72-76 pump contactor output 77-78 remote alarm indication 79-80...
  • Page 56 ESIE98–06A EUWA/Y25-30HC(Z) terminal connections Item Code (contact) Description Terminals L1/L2/L3/N/PE power supply to unit L1/L2/L3/N/PE S12S mains isolator L1/L2/L3/N/PE remote cool/heat setting 72-75 dual set point 71-73 remote start/stop 71-74 S10L/S11L flow switch / pump contact 72-76 pump contactor output 77-78 remote alarm indication 79-80...

  • Page 57: Part 2 Functional Description

    ESIE98–06A Part 2 Functional Description Introduction This part gives more detailed information on the functions and controls in the unit. This information can be used as background information for troubleshooting. An extensive overview of the functioning of the controllers is also given in this part. Knowledge of the controllers is indispensable to gain valuable information prior to servicing and troubleshooting.
  • Page 58 ESIE98–06A 2–2 Part 2 – Functional Description...

  • Page 59: Functional Control

    ESIE98–06A Functional Control Part 2 Functional Control What Is in This Chapter Introduction This chapter will give more detailed information on the functions used to control the system. Understanding these functions is vital when diagnosing a malfunction, which is related to the functional control.

  • Page 60: Operation Range

    Functional Control ESIE98–06A Operation Range Operation range The following figure shows the operation range for cooling only chiller types with R-22: EUWA5-30HB/C outdoor temperature (˚C) standard option Standard (special model) Glycol Water leaving water temperature (˚C) Range for pull down operation Protect the water circuit against freezing Operation range The following figure shows the operation range for heatpump chiller types in cooling and in heating...
  • Page 61 Daikin offers a windscreen as option for this purpose. - An extra fan speed control is required (Daikin Option kit EKHP8/10H) * EUWA5-15-20-25-30HCZ - If the units operate below -5˚C and are installed in a rather windy space, a windscreen is required.

  • Page 62: Operation Flowchart

    Functional Control ESIE98–06A Operation Flowchart EUWA5-30HB/C(Z) The operation of chiller types EUWA5-30HB(Z) is clarified in the schematic diagram below: Power on Start in cooling Thermostat control Stop EUWY5-30HB/C The operation of chiller types EUWY5-30HB is clarified in the schematic diagram below: Power on Start in cooling Start in heating...

  • Page 63: Defrost Principle (Only For Euwy5-30Hb/C(Z))

    ESIE98–06A Functional Control Defrost Principle (only for EUWY5-30HB/C(Z)) Introduction This chapter explains the principle of defrost. In the next chapter (refer to 1.5 – Defrost Circuit Control) we concentrate on the location of the defrost PCB in the switch box and on the wiring diagram and we will give an overview of the different defrost circuit combinations.
  • Page 64 Functional Control ESIE98–06A Example start defrost stop defrost start defrost stop defrost Tcoil > +10˚C Tcoil Tcoil < -10˚C Tcoil < 0.6xTamb - 10 (±3) 150 s 10 min. 20 min. 150 s < 10 min. and stopped timer 1 timer 2 timer 3 timer 1...

  • Page 65: Defrost Circuit Control

    ESIE98–06A Functional Control Defrost Circuit Control Defrost PCB layout The following picture shows the layout of the defrost PCB: = defrost switch -3˚C till +3˚C CN 1 normal (=flashing) CN 2 CN1 = coil sensor CN2 = ambient sensor green LED A-B = power supply 24 V C D T C-D = not used...
  • Page 66 Functional Control ESIE98–06A Defrost circuit When one of the circuits of chillers with more than one refrigeration circuit (EUWY15-30HC) performs combination a defrost: EUWY15-30HC Circuits 2 and 3 will influence each other in such a way that one circuit is switched off when the other circuit performs a defrost.

  • Page 67: Thermostat Control

    ESIE98–06A Functional Control Thermostat Control Two different The thermostat control in chiller types EUWA/Y5-10HB(Z) differs from that in chiller types thermostat controls EUWA/Y15-30HC(Z). Functional diagram EUWA/Y5-10HB(Z) compressor c: cooling set point d: heating set point inlet water temperature Controller The limit values of the step difference are given below: EUWA/Y5-10HB(Z) Description Lower limit...

  • Page 68: Head Pressure Control For Euwa/Y5-10Hb(Z)

    Functional Control ESIE98–06A Head Pressure Control for EUWA/Y5-10HB(Z) Functional The chiller types EUWA/Y5-10HB(Z) are equipped with a dual speed fan control to ensure the high description pressure when the ambient temperature is low. When no signal is sent, all fans rotate on high speed. Cooling mode In cooling mode, the head pressure control is activated when the temperature decreases until 17°C (= F5 or min.

  • Page 69: Head Pressure Control For Euwa/Y15-30Hc(Z)

    ESIE98–06A Functional Control Head Pressure Control for EUWA/Y15-30HC(Z) Functional The chiller types EUWA/Y15-30HC(Z) are equipped with a fan control to ensure the high pressure description when the ambient temperature is low. When no signal is sent, all fans rotate on high speed. When the temperature decreases until 17°C, relay Ry1 switches on.

  • Page 70: Freeze-Up Control

    Functional Control ESIE98–06A Freeze-up Control Freeze-up Freeze-up protection is a protection against ice formation in the water circuit at the evaporator outlet. protection There are 2 sorts of freeze-up protection: Soft freeze-up protection: to control the outlet water temperature. Hard freeze-up protection: to control the evaporating temperature. The following table shows all the characteristics of soft and hard freeze-up protection: Characteristics Soft freeze-up protection...

  • Page 71: The Controller For The Euwa/Y5-10Hb(Z) Chillers

    ESIE98–06A The Controller for the EUWA/Y5-10HB(Z) Chillers Part 2 The Controller for the EUWA/Y5-10HB(Z) Chillers What Is in This Chapter Introduction In this chapter you will learn to work with the controller for the chiller types EUWA/Y5-10HB(Z). Overview This chapter covers the following topics: Topic See page 2.2 –...

  • Page 72: The Euwa/Y5-10Hb(Z) Controller

    The Controller for the EUWA/Y5-10HB(Z) Chillers ESIE98–06A The EUWA/Y5-10HB(Z) Controller Digital controller The EUWA/Y5-10HB(Z) 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.
  • Page 73 ESIE98–06A The Controller for the EUWA/Y5-10HB(Z) Chillers Function the default parameters are written after pressing this key and then powering the unit the key is copied into the unit EEPROM after pressing both keys and then powering the unit (note 1) pv d the unit EEPROM is copied into the key after pressing both keys and then powering the unit (note 1)

  • Page 74: Start/Stop, Cool/Heat And Temperature Setting

    The Controller for the EUWA/Y5-10HB(Z) Chillers ESIE98–06A Start/Stop, Cool/Heat and Temperature Setting At power on The display shows the inlet water temperature. Remote start/stop, The procedure to start or stop the unit depends on the setting of the remote start/stop, refer to remote cool/heat page 2-21.
  • Page 75 ESIE98–06A The Controller for the EUWA/Y5-10HB(Z) Chillers What happens When you switch the unit on, the following happens: when you switch the unit on Stage Description LED starts blinking, indicating that the initialization cycle is started. LED or the LED lights up, indicating whether cooling or heating mode is selected.

  • Page 76: What Happens In Case Of An Alarm Or A Warning

    The Controller for the EUWA/Y5-10HB(Z) Chillers ESIE98–06A What Happens in Case of an Alarm or a Warning Alarms and The units are equipped with two kinds of safety devices: warnings Alarm Warning Function Protects the unit. Gives additional service information. Description the unit is shut down the display starts flashing, alternately...

  • Page 77: Settings: Direct And User Parameters

    ESIE98–06A The Controller for the EUWA/Y5-10HB(Z) Chillers Settings: Direct and User Parameters Direct and user The digital controller provides direct and user parameters: parameters Direct parameters are used for the daily usage of the unit (for example to set the cooling and heating temperature set point and to read the operational information).
  • Page 78 The Controller for the EUWA/Y5-10HB(Z) Chillers ESIE98–06A Description Type Code Default Value Limit values Step value nr. of terminals user user 0: locked and controller keyboard lock 1: unlocked unit’s serial address user 1 to 199 not used — — —...

  • Page 79: How To Read Or Adjust Parameter Settings: The Programming Procedure

    ESIE98–06A The Controller for the EUWA/Y5-10HB(Z) Chillers How to Read or Adjust Parameter Settings: the Programming Procedure Programming procedure BEGIN Do you want access to all parameters? Press for 5 seconds. Press for 5 seconds to access only direct parameters. Enter the user-password 22 with the keys Press...
  • Page 80 The Controller for the EUWA/Y5-10HB(Z) Chillers ESIE98–06A 2–24 Part 2 – Functional Description...

  • Page 81: The Controller For The Euwa/Y15-30Hc(Z) Chillers

    ESIE98–06A The Controller for the EUWA/Y15-30HC(Z) Chillers Part 2 The Controller for the EUWA/Y15-30HC(Z) Chillers What Is in This Chapter Introduction In this chapter you will learn to work with the controller for the chiller types EUWA/Y15-30HC(Z). Overview This chapter covers the following topics: Topic See page 3.2 –...

  • Page 82: The Euwa/Y15-30Hc(Z) Controller

    The Controller for the EUWA/Y15-30HC(Z) Chillers ESIE98–06A The EUWA/Y15-30HC(Z) Controller Digital controller The EUWA/Y15-30HC(Z) units are equipped with a digital controller offering a user-friendly way to configure, use and maintain the unit. The digital controller consists of: an alphanumeric LCD display 14 keys (5 general keys and 8 menu keys) 10 LEDs next to the menu keys indicating the selected menu.

  • Page 83: Start/Stop, Cool/Heat And Temperature Setting

    ESIE98–06A The Controller for the EUWA/Y15-30HC(Z) Chillers Start/Stop, Cool/Heat and Temperature Setting At power on The initialization takes 10 seconds. The controller automatically enters the read-out menu, displaying the first read-out screen. Remote start/stop The procedure to start or stop the unit depends on the setting of the remote start/stop, see page 2-33. The remote start/stop is field supply.

  • Page 84: What Happens In Case Of An Alarm

    The Controller for the EUWA/Y15-30HC(Z) Chillers ESIE98–06A What Happens in Case of an Alarm Two kinds of safety The units are equipped with two kinds of safety devices: devices Unit alarm Circuit alarm Function Protects the unit in general. Protects the individual circuits. Description All compressors are shut down.

  • Page 85: Menu Overview

    ESIE98–06A The Controller for the EUWA/Y15-30HC(Z) Chillers Menu Overview An overview of the menus is given in the table below. Menu key Access Screen n° Task description See page a Read-out direct Screen 1 To consult the settings. page 2-31 Screen 2 To consult the outlet water temperature.

  • Page 86: How To Read Or Adjust Parameter Settings: The Programming Procedure

    The Controller for the EUWA/Y15-30HC(Z) Chillers ESIE98–06A How to Read or Adjust Parameter Settings: the Programming Procedure Programming procedure BEGIN Press the desired menu-key. Does the controller prompt you to give the password? Enter the password using the h key. Refer to page 2-41. Press the j key.

  • Page 87: Read-Out Menu

    ESIE98–06A The Controller for the EUWA/Y15-30HC(Z) Chillers Read-out Menu Operational Using this menu you can read the actual operational information, such as the cooling and heating set information points, the inlet and outlet water temperature, the circuits status, etc. This menu provides 3 screens. Screen 1 This screen shows information about the operation mode, the set points and the temperature: Line n°...

  • Page 88: Set Points Menu

    The Controller for the EUWA/Y15-30HC(Z) Chillers ESIE98–06A Set Points Menu Glycol application Follow the next steps when you want to start the glycol application. step Action Push the read-out & user setting buttons at the same time for 5 seconds. Release the push buttons, the C led is on.

  • Page 89: User Settings Menu

    ESIE98–06A The Controller for the EUWA/Y15-30HC(Z) Chillers User Settings Menu Password You need the password to enter this menu. Menu description This menu allows a full customizing of the units and provides the following 6 screens: Screen n° Display Description See page To activate remote control.
  • Page 90 The Controller for the EUWA/Y15-30HC(Z) Chillers ESIE98–06A Screen 3 This screen provides the ability to modify the thermostat parameters: Lower Upper Line n° Display Description Step Default limit limit screen title THERM. SETTINGS number of thermo- STEPS stat steps STPL (°C) step length (a) STEPDIFFERENCE (°C) step difference (b)
  • Page 91 ESIE98–06A The Controller for the EUWA/Y15-30HC(Z) Chillers Screen 6 This screen provides the ability to set an offset value to the measured temperature: Lower Upper Line n° Display Description Step Default limit limit screen title SENSOR ACCURACY inlet water INLET WATER SENSOR -2.0 ˚...

  • Page 92: Software Timers Menu

    The Controller for the EUWA/Y15-30HC(Z) Chillers ESIE98–06A 3.10 Software Timers Menu Software timers Using this menu you can read the actual value of the software timers. This menu provides 2 screens. Screen 1 This screen shows the actual value of the general timers. Line n°...

  • Page 93: History Menu

    ESIE98–06A The Controller for the EUWA/Y15-30HC(Z) Chillers 3.11 History Menu Reading safety info Using this menu you can at all times read the information of the latest shutdowns: after shutdown The number of times a unit safety or circuit safety occurred The unit status at the moment of the last shutdown.

  • Page 94: Info Menu

    The Controller for the EUWA/Y15-30HC(Z) Chillers ESIE98–06A 3.12 Info Menu Additional unit Using this menu you can consult additional information about the unit. There are two screens. information Screen 1 This screen shows the unit information: Line n° Display Description screen title UNIT INFORMATION the unit name...

  • Page 95: Input /Output Menu

    ESIE98–06A The Controller for the EUWA/Y15-30HC(Z) Chillers 3.13 Input /Output Menu Reading the status Using this menu you can read the status of the digital inputs and the status of the relay outputs. of inputs and Screens 1 to 4 provide status information of the digital inputs. outputs Screens 5 to 9 provide status information of the relay outputs.
  • Page 96 The Controller for the EUWA/Y15-30HC(Z) Chillers ESIE98–06A Screen 6 This screen shows the status of the low pressure bypass switches: Line n° Display Description and status screen title RELAY OUTPUTS low pressure bypass switch of circuit 1, 2 or 3: active or not LPBYPASS 1, 2, 3 active Screen 7...

  • Page 97: Password Menu

    ESIE98–06A The Controller for the EUWA/Y15-30HC(Z) Chillers 3.14 Password Menu Password The password protects the access to: the user settings menu e the set points menu z. The password is a 4-digit number between 0000 and 9999. The units leave the factory with user password 0000. The general factory password is 1914. To reset a pre-defined user password, press j and q simultaneously for 5 seconds.
  • Page 98 The Controller for the EUWA/Y15-30HC(Z) Chillers ESIE98–06A 2–42 Part 2 – Functional Description...

  • Page 99: Overview Of Inputs And Outputs

    ESIE98–06A Part 3 Troubleshooting Introduction The small water chillers (EUWA/Y5-30HB/C) are equipped with electronic PCBs. These PCBs 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 PCBs and finally the output devices. The chapters in this part are arranged according to this sequence.
  • Page 100 ESIE98–06A 3–2 Part 3 – Troubleshooting...

  • Page 101: What Is In This Chapter

    ESIE98–06A Overview of Inputs and Outputs Part 3 Overview of Inputs and Outputs What Is in This Chapter Introduction The first step in a troubleshooting sequence is to check the inputs and outputs. In this chapter an overview is given. The PCB for the chiller types EUWA/Y5-10HB(Z) differs from the PCB for the chiller types EUWA/Y15-30HC(Z).

  • Page 102: Overview Of Inputs And Outputs Of Euwa/Y5-10Hb(Z)

    Overview of Inputs and Outputs ESIE98–06A Overview of Inputs and Outputs of EUWA/Y5-10HB(Z) Inputs/outputs The following table describes the relation between the wiring diagram symbols and the wiring connections of chiller types EUWA/Y5-10HB(Z) and also the malfunction (or program) code. We refer to the wiring diagram and the PCB layout to find the exact location on both wiring diagram and switch box.

  • Page 103: Overview Of Inputs And Outputs Of Euwa/Y15-30Hc(Z)

    ESIE98–06A Overview of Inputs and Outputs Overview of Inputs and Outputs of EUWA/Y15-30HC(Z) Inputs/outputs The following table describes the relation between the wiring diagram symbols and the wiring connections of chiller types EUWA/Y15-30HC(Z). We refer to the wiring diagram and the PCB layout to find the exact location on both wiring diagram and switch box: Wiring diagram Wiring connec-...
  • Page 104 Overview of Inputs and Outputs ESIE98–06A Defrost PCB The following table shows the defrost PCB wiring. It describes the relation between the wiring diagram symbols and the wiring connections for chiller types EUWY15-30HC(Z). Wiring diagram Wiring connection Type Detail Description symbol terminal analog input...

  • Page 105: Overview Of Fault Indications And Safeties

    ESIE98–06A Overview of Fault Indications and Safeties Part 3 Overview of Fault Indications and Safeties What Is in this Chapter Introduction In the first stage of the troubleshooting sequence it is important to interpret the fault indication on the controller display. This will help you to find the cause of the problem. Overview This chapter covers the following topics: Topic...

  • Page 106: Fault Indication Euwa/Y5-10Hb(Z)

    Overview of Fault Indications and Safeties ESIE98–06A Fault Indication EUWA/Y5-10HB(Z) Overview of codes The following alarm and warning codes may appear on the screen: Alarm or Code(s) Description Reset See … warning The anti-freeze alarm is activated. alarm manual page 2-20 Overcurrent protection of the compressor motor is activated.
  • Page 107 ESIE98–06A Overview of Fault Indications and Safeties What to do in the In the event of automatic reset, the system starts again automatically. event of an alarm In the event of manual reset, proceed as follows: Step Action Result The buzzer stops. Press Find the cause of the alarm and correct it.

  • Page 108: Fault Indication Euwa/Y15-30Hc(Z)

    Overview of Fault Indications and Safeties ESIE98–06A Fault Indication EUWA/Y15-30HC(Z) What happens in The units are equipped with two kinds of safety devices: the event of an alarm Unit alarm Circuit alarm Function Protects the unit in general. Protects the individual circuits. Description all compressors are shut down the compressor of the corresponding...
  • Page 109 ESIE98–06A Overview of Fault Indications and Safeties What to do in the In the event of an alarm, proceed as follows: event of an alarm Step Action Result Press g to acknowledge The buzzer stops. the alarm. The g LED starts blinking. One of the following alarm screens is displayed: Screen n°...

  • Page 110: Safeties Overview

    Overview of Fault Indications and Safeties ESIE98–06A Safeties Overview Safety devices Alarm Wiring Alarm indication Activation Reset Device description code EUWA/Y5-10HB( EUWA/Y15-30HC( flow switch or no flow for 5 sec- manual software S10L, contact flow switch activated pump contact onds reset S11L closed on...

  • Page 111: Checking The Inputs And Outputs

    ESIE98–06A Checking the Inputs and Outputs Part 3 Checking the Inputs and Outputs What Is in This Chapter Introduction In this chapter you will find information on how to measure and check the most important inputs. Overview This chapter covers the following topics: Topic See page 3.2 –...

  • Page 112: Checking The Temperature Sensors

    Checking the Inputs and Outputs ESIE98–06A Checking the Temperature Sensors Introduction If the cause of the problem is related to the temperature sensors, then the sensors should be checked prior to changing the PCB or an output device. Types of sensors There are two types of temperature sensors: sensors connected to the controller PCB: R3T/ R4T/ R5T/R6T sensors connected to the defrost PCB: R11T/ R12T/ R21T/ R22T/ R31T/ R32T...
  • Page 113 ESIE98–06A Checking the Inputs and Outputs Table 1 In the following table you will find the temperature-resistance values of the controller sensors R3T, R4T, R5T and R6T. Tempera- Tempera- Tempera- Resistor value Resistor value Resistor value ture ture ture maximum standard minimum maximum...
  • Page 114 Checking the Inputs and Outputs ESIE98–06A Table 2 In the following table you will find the temperature-resistance values of the defrost sensors R11T, R12T, R21T, R22T, R31T and R32T. Temperature Resistor value Temperature Resistor value Temperature Resistor value °C kΩ kΩ...

  • Page 115: Checking The Digital Inputs And Outputs

    ESIE98–06A Checking the Inputs and Outputs Checking the Digital Inputs and Outputs Input route In the following block diagram the digital input route from the transducer (e.g. thermostat, pressostat, reverse phase, etc.) to the PCB input is shown. UNIT TRANSDUCER RELAY RELAISCONTACT PCB INPUT...

  • Page 116: Checking The Power Supply And Fuses

    Checking the Inputs and Outputs ESIE98–06A Checking the Power Supply and Fuses Overview The following overview shows the circuits, the voltage and their fuse codes: Circuit Wiring code Type / voltage Fuse code main supply L1+L2+L3+M 3 phases / 200 V AC F1U+F2U+F3U control circuit (fans + relays) L2+M...

  • Page 117: Troubleshooting

    ESIE98–06A Troubleshooting Part 3 Troubleshooting What Is in This Chapter Introduction When a problem occurs, you have to check all possible faults. This chapter gives a general idea of where to look for faults. Furthermore the general procedures for refrigeration circuit repair and for electrical circuit repair are explained.

  • Page 118: Items To Be Checked

    Troubleshooting ESIE98–06A Items to Be Checked Introduction In the tables below the most frequent failures and their corrective action are explained. Use these tables when the unit or a circuit does not start. No malfunction The unit does not start and there is no malfunction indication. indication Possible causes Items to be checked...
  • Page 119 ESIE98–06A Troubleshooting Problem Possible causes Items to be checked High pressure water flow too low in heating pump operation switch water temperature too high in water flow (blocked valves) heating flow switch operation defective condenser fan operation condition operation in cooling outdoor air temperature <...

  • Page 120: General Repair Procedures

    Perform the repair according to the normal procedure. There are no special procedures for the replacement of refrigeration parts. We refer to the general DAIKIN air-conditioning service manual for more information on the standard practice of refrigeration works. Pressurize the system. Make sure there are no leaks.

  • Page 121: Unlocking The Keyboard

    ESIE98–06A Troubleshooting Unlocking the Keyboard Locked keyboard If the keyboard is locked, it is no longer possible to manipulate the controller. The following table explains the manipulation. When the unit is the unit stays off. Unlock the To unlock the keyboard, proceed as follows: keyboard (method 1) Step...

  • Page 122: Procedure For Controller Changing (Euwa/Y5-10Hb(Z))

    Troubleshooting ESIE98–06A Procedure for controller Changing (EUWA/Y5-10HB(Z)) Changing the To change the controller, proceed as follows: controller Step Action Remove the connections of the old controller. Remove the old controller. Place the new controller in the same way as the old controller. Reconnect the controller.
  • Page 123 ESIE98–06A Troubleshooting Step Action Result Scroll using to change the value to 02 for EUWA5-8-10HB(Z). Scroll using to change the value to 03 for EUWY5-8-10HB. You will see parameter H1. Press to go to the other parameters. For the other parameters, refer to the following tables. Table 1 with The following table shows the settings of the remaining parameters that are not identical for all units: parameters...
  • Page 124 Troubleshooting ESIE98–06A Table 2 with The following table shows the settings of the remaining parameters that are not identical for all units parameters referring to the optional items ZL and ZH: CAREL EUWA5-10HB EUWA5-10HB Name Function Parameter EUWA/Y5-10HB (default) (option ZL) (option ZH) min.
  • Page 125 ESIE98–06A Troubleshooting CAREL Name Function Parameter EUWA/Y5-10HB (default) triac pulse length factory antifreeze-alarm hysteresis factory bypass-time for antifreeze-alarm factory antifreeze-heater differential factory supporting heaters probe factory limit antifreeze-alarm set factory - 40 - 15 flow start timer factory flow stop timer factory LP bypass timer factory...

  • Page 126: Procedure For Pcb Changing (Euwa/Y15-30Hc(Z))

    Troubleshooting ESIE98–06A Procedure for PCB Changing (EUWA/Y15-30HC(Z)) Changing the PCB To change the PCB, proceed as follows: Step Action Remove the connections of the old PCB. Remove the old PCB. Place the new PCB in the same way as the old PCB. Reconnect the PCB.
  • Page 127 ESIE98–06A Troubleshooting Screen 1 This screen shows the information about the unit type: Line n° Display Description Default setting To change the setting: 1 Use h to select the correct type. chiller type UNIT TYPE EUWA15 2 Press j. 1 Use h and j to change the digits. manufacturing number MANUFACT.

  • Page 128: Procedure To Set The Carell Controller

    Troubleshooting ESIE98–06A Procedure to Set the Carell Controller Setting of dipswitch The following picture shows how to set the dipswitch on the back of the controller for EUWA/Y5-10HB(Z): EUWA/Y5-10HB(Z) All dipswitches should be off. address 00 = 1 term. 01 = 2 term. to power board keypad off (0)

  • Page 129: Control Of Function Of 4 Way Valve(Euwy5-30Hb/C)

    ESIE98–06A Troubleshooting Control of function of 4 way valve(EUWY5-30HB/C) Four-way valve The following drawing indicates the main components necessary to execute good troubleshooting: coil pilot body left pilot back capillary tube right pilot back discharge tube from the capillary tube compressor piston bleed hole...
  • Page 130 Troubleshooting ESIE98–06A The valve will not The following list explains what the possible causes could be: shift from cooling to Check the electrical circuit. If there is no voltage to the coil, repair it. heating Check the coil. If it is defective, replace it. Check the refrigerant charge.
  • Page 131 ESIE98–06A Troubleshooting The valve starts to The following list explains what the possible causes could be. The numbers in the columns refer to the shift but does not numbers in the drawing: page 3-31: complete the reversal Description Warm Warm Warm Temperature There is not enough pressure...
  • Page 132 Troubleshooting ESIE98–06A The valve will not The following list explains what the possible causes could be. The numbers in the columns refer to the shift from heating to numbers in the drawing: page 3-31: cooling Description Cool Hot as Cool as Temperature Temperature The pressure differential is...
  • Page 133 ESIE98–06A Troubleshooting Leak when heating The following list explains what the possible causes could be. The numbers in the columns refer to the mode numbers in the drawing: page 3-31: Description Cool Hot as Cool as Temperature Warmer At the end of the slide, the piston of valve than valve needle is leaking.
  • Page 134 Troubleshooting ESIE98–06A 3–36 Part 3 – Troubleshooting...

  • Page 135: Pre-Test Run Checks

    ESIE98–06A Part 4 Commissioning and Test Run Introduction Commissioning and test run are well known practices in service engineering. This part offers a systematic approach to test run checks and test value, which will guarantee a high quality installation and operation of the units. It is, therefore, recommended to read the chapters in this part with particular attention.
  • Page 136 ESIE98–06A 4–2 Part 4 – Commissioning and Test Run...

  • Page 137: What Is In This Chapter

    ESIE98–06A Pre-Test Run Checks Part 4 Pre-Test Run Checks What Is in This Chapter Introduction As shown in the table below, we have grouped the pre-test run checks into three main groups to facilitate the servicing. Overview This chapter covers the following topics: Topic See page 1.2 –...

  • Page 138: General Checks

    Pre-Test Run Checks ESIE98–06A General Checks Checklist A checklist of general checks is given below: Check if … there is external damage. the unit is well supported and/or if the foundation is properly done. the unit should be installed horizontally with a deviation of maximum 1°. anti-vibration pads are required.

  • Page 139: Water Piping Checks

    ESIE98–06A Pre-Test Run Checks Water Piping Checks Checklist A checklist of water piping checks is given below: Check if … the water volume is within the limits. there is adequate water flow. the water quality meets the standards. the water piping is properly insulated. measurement points for temperature and pressure are available on the water circuit.
  • Page 140 Pre-Test Run Checks ESIE98–06A Calculation of the The following calculation method 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 will give a certain volume inertia to the system so that water (or glycol) temperature does not drop too fast when the unit turns on and that the temperature does not rise too fast when the unit turns off.

  • Page 141: Electrical Checks

    ESIE98–06A Pre-Test Run Checks Electrical Checks Checklist A checklist of electrical checks is given below: Check if … main fuses, earth leak detector and main isolator are installed. the main power supply voltage deviates less than 10% from the nominal value. the flow switch and pump contact are properly wired up.
  • Page 142 Pre-Test Run Checks ESIE98–06A 4–8 Part 4 – Commissioning and Test Run...

  • Page 143: Test Run & Operation Data

    ESIE98–06A Test Run & Operation Data Part 4 Test Run & Operation Data Introduction The following tables give an overview of the measurements that you can do. Use it as a guideline during commissioning. For the location of the measurement points we refer to the piping and wiring diagrams in Part 1. Pressures Measurement Value...
  • Page 144 Test Run & Operation Data ESIE98–06A Currents Unit Nominal current Maximum current Fuses EUWA/Y5HB 12.5 A 3x20 aM EUWA/Y8HB 13.2 A 21.5 A 3x25 aM EUWA/Y10HB 16 A 24.5 A 3x32 aM EUWA/Y15HC 23 A 36 A 3x40 aM EUWA/Y20HC 31 A 48 A 3x50 aM...
  • Page 145 ESIE98–06A Part 5 Maintenance Periodical checks The following table gives a list of periodical checks and actions in order to execute a good or actions maintenance. Inspection checks and actions Remarks Verify if the cross-fin coil is not blocked. If so, clean A dirty cross-fin coil results in a capacity with low pressure tap water.
  • Page 146 ESIE98–06A 5–2 Part 5 – Maintenance...
  • Page 147 ESIE98–06A Index This index is set up in three columns. In the first column you will find references to the item in general. In the second column you will find references to the EUWA/Y5-10HB chiller type and in the third column to the EUWA/Y15-30HC chiller type.
  • Page 148 ESIE98–06A General index EUWA/Y5-10H(Z) EUWA/Y15-30H(Z) condenser ......1-24, 1-27 controller compressor timers ............2-36 cooling set point .
  • Page 149 ESIE98–06A General index EUWA/Y5-10H(Z) EUWA/Y15-30H(Z) factory menu ..............3-28 fan card .
  • Page 150 ESIE98–06A General index EUWA/Y5-10H(Z) EUWA/Y15-30H(Z) low pressure service port ... . . 1-24, 1-27 main board ..........1-30 main board .
  • Page 151 ESIE98–06A General index EUWA/Y5-10H(Z) EUWA/Y15-30H(Z) read-out menu ..............2-29, 2-31 refrigeration circuit 4-way valve .
  • Page 152 ESIE98–06A General index EUWA/Y5-10H(Z) EUWA/Y15-30H(Z) technical specifications ....1-4, 1-6, 1-8 temperature difference cooling ..........2-21 heating .

Table of Contents