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Daikin EUWY 24KBZW1 Series, Service Manual

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ESIE11-02

Part 2 – Functional Description

2–1

4

3

4

5

2

Part 2

Functional Description

Introduction

This part contains more detailed information on the functions and controls in the unit. This information
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:

Chapter

See page

1–Functional Description

2–The Digital Controller

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Summary of Contents for EUWY 24KBZW1 Series

Page 1: ...ESIE11 02 Service Manual EUWA 5 24KBZW1 R 407C EUWY 5 24KBZW1 R 407C Small air cooled chillers and heat pump...

Page 2: ......

Page 3: ...8KBZW1 1 39 1 16 Electrical Specifications EUWY 10 12KBZW1 1 41 1 17 Electrical Specifications EUWY 16 20KBZW1 1 43 1 18 Electrical Specifications EUWY 24KBZW1 1 45 1 19 Outlook Drawing EUWAN5 8KBZW1...

Page 4: ...perational Range EUWA 5 24KBZW1 2 4 1 3 Operational Range EUWY 5 24KBZW1 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 24...

Page 5: ...24KBZW1 3 4 1 3 Inputs outputs overview of the I O PCB EUWA 5 24KBZW1 and EUWY 5 24KBZW1 3 5 2 Malfunction Indications and Safeties Overview 2 1 What Is in This Chapter 3 7 2 2 Malfunction Indication...

Page 6: ...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 External Static Pressure EUWA 5 24KBZW1 4 8 1 5 External Stat...

Page 7: ...at Is in This Chapter 4 29 2 2 Test Run and Operation Data for EUWA 5 24KBZW1 and EUWY 5 24KBZW1 4 30 Part 5 Maintenance 1 Maintenance 1 1 What Is in This Chapter 5 3 1 2 Maintenance of the Main Parts...

Page 8: ...ESIE11 02 vi Table of Contents 3 1 4 5...

Page 9: ...ZW1 without hydraulic module naked model EUWAP5 24KBZW1 with hydraulic module pump and expansion vessel EUWAB5 24KBZW1 with hydraulic module buffer tank pump and expansion vessel EUWY 5 24KBZW1 The Da...

Page 10: ...Introduction ESIE11 02 viii 3 1 4 5...

Page 11: ...ntroduction This part contains an outline of all the relevant elements in the EUWA 5 24KBZW1 and EUWY 5 24KBZW1 installation What is in this part This part contains the following chapters Chapter See...

Page 12: ...ESIE11 02 1 2 Part 1 System Outline 3 1 1 5...

Page 13: ...WY 5 8KBZW1 1 17 1 7 Technical Specifications EUWY 10 12KBZW1 1 20 1 8 Technical Specifications EUWY 16 20KBZW1 1 23 1 9 Technical Specifications EUWY 24KBZW1 1 26 1 10 Correction factors for glycol 1...

Page 14: ...B10 12KBZW1 1 52 1 25 Outlook Drawing EUWAN16KBZW1 EUWYN16KBZW1 1 53 1 26 Outlook Drawing EUWAP16KBZW1 EUWYP16KBZW1 1 54 1 27 Outlook Drawing EUWAB16KBZW1 EUWAB16KBZW1 1 55 1 28 Outlook Drawing EUWAN2...

Page 15: ...at exchanger No x model 1 x AC70X 24HX 1 x AC70X 34HX Min water volume in the system 1 54 l 85 l Water flow rate Min 16 l min Max 65 l min Min 26 l min Max 102 l min Nominal water flow 32 l min 51 l m...

Page 16: ...x w x d 1230 x 1290 x 734 mm 1230 x 1290 x 734 mm Weight Machine weight 150 kg 168 kg 180 kg 215 kg 229 kg 241 kg Operation weight 152 kg 171 kg 239 kg 218 kg 232 kg 300 kg Casing Colour Ivory white...

Page 17: ...ows 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 cove...

Page 18: ...anger No x model 1 x AC70X 40HX 1 x AC70X 50HX Min water volume in the system 1 108 l 126 l Water flow rate Min 32 l min Max 129 l min Min 38 l min Max 152 l min Nominal water flow 64 l min 76 l min N...

Page 19: ...ht Machine weight 245 kg 259 kg 271 kg 248 kg 262 kg 274 kg Operation weight 248 kg 262 kg 330 kg 251 kg 265 kg 335 kg Casing Colour Ivory white Munsell code 5Y7 5 1 RAL 7044 Material Polyester coated...

Page 20: ...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...

Page 21: ...odel 1 x AC230X 38HX 1 x AC230X 50HX Min water volume in the system 1 88 l 111 l Water flow rate Min 53 l min Max 212 l min Min 67 l min Max 267 l min Nominal water flow 106 l min 134 l min Nom water...

Page 22: ...21 x 2580 x 734 mm 1541 x 2580 x 734 mm Weight Machine weight 430 kg 448 kg 460 kg 490 kg 508 kg 520 kg Operation weight 436 kg 457 kg 525 kg 496 kg 518 kg 586 kg Casing Colour Ivory white Munsell cod...

Page 23: ...lows 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 cov...

Page 24: ...nger No x model 1 x AC230X 58HX Min water volume in the system 1 132 l Water flow rate Min 79 l min Max 317 l min Nominal water flow 158 l min Nom water pressure drop 22 kPa Insulation material Climaf...

Page 25: ...fety valve __ 3 bar Dimensions h x w x d 1541 x 2580 x 734 mm 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 M...

Page 26: ...llows 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 co...

Page 27: ...nger No x model 1 x AC70X 34HX 1 x AC70X 40HX Min water volume in the system 1 43 l 82 l Water flow rate Min 21 l min Max 68 l min Min 31 l min Max 106 l min Nominal water flow Cooling 26 l min Heatin...

Page 28: ...ne weight 163 kg 181 kg 193 kg 227 kg 241 kg 253 kg Operation weight 165 kg 184 kg 252 kg 230 kg 244 kg 312 kg Casing Colour Ivory white Munsell code 5Y7 5 1 RAL 7044 Material Polyester coated galvani...

Page 29: ...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 Op...

Page 30: ...t exchanger No x model 1 x AC70X 50HX Min water volume in the system 1 100 l 119 l Water flow rate Min 38 l min Max 137 l min Min 45 l min Max 155 l min Nominal water flow Cooling 60 l min Heating 69...

Page 31: ...ight 258 kg 272 kg 284 kg 258 kg 272 kg 284 kg Operation weight 261 kg 275 kg 343 kg 261 kg 275 kg 343 kg Casing Colour Ivory white Munsell code 5Y7 5 1 RAL 7044 Material Polyester coated galvanised s...

Page 32: ...l 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 O...

Page 33: ...38HX 1 x AC230X 50HX Min water volume in the system 1 82 l 100 l Water flow rate Min 61 l min Max 212 l min Min 75 l min Max 275 l min Nominal water flow Cooling 98 l min Heating 106 l min Cooling 12...

Page 34: ...ine weight 455 kg 473 kg 485 kg 516 kg 534 kg 546 kg Operation weight 461 kg 482 kg 550 kg 522 kg 544 kg 612 kg Casing Colour Ivory white Munsell code 5Y7 5 1 RAL 7044 Material Polyester coated galvan...

Page 35: ...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 Op...

Page 36: ...0X 58HX Min water volume in the system 1 119 l Water flow rate Min 89 l min Max 309 l min Nominal water flow Cooling 149 l min Heating 155 l min Nom water pressure drop Cooling 19 kPa Heating 22 kPa I...

Page 37: ...t 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 press...

Page 38: ...l 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 O...

Page 39: ...2 General Outline Part 1 System Outline 1 29 3 1 4 5 1 10 Correction factors for glycol Correction factors The illustration below shows the correction factors for glycol for EUWA 5 24KBZW1 and EUWY 5...

Page 40: ...ains glycol freezing points for different glycol concentrations Pattern Description Ethylene glycol Propylene glycol Kc Correction on cooling capacity Ki Correction on power input Kf Correction on flo...

Page 41: ...63 5 A 97 9 A 99 2 A Nominal running current 7 7 A 9 0 A 13 6 A 14 9 A Max running current 11 2 A 12 5 A 16 9 A 18 2 A Recommended fuses 3 x 20 gL gG 3 x 20 gL gG 3 x 25 gL gG 3 x 25 gL gG Fans Phase...

Page 42: ...ditions 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...

Page 43: ...39 A 140 A Nominal running current 15 9 A 17 2 A 20 5 A 21 8 A Max running current 19 9 A 21 2 A 26 9 A 28 2 A Recommended fuses 3 x 25 gL gG 3 x 32 gL gG 3 x 32 gL gG 3 x 40 gL gG Fans Phase 1 Voltag...

Page 44: ...ditions 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...

Page 45: ...urrent 27 2 A 29 2 A 31 8 A 33 8 A Max running current 33 8 A 35 8 A 39 8 A 41 8 A Recommended fuses 3 x 40 gL gG 3 x 50 gL gG 3 x 50 gL gG 3 x 50 gL gG Fans Phase 1 Voltage 230 V Max running current...

Page 46: ...ditions 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...

Page 47: ...A Nominal running current 41 0 A 43 7 A Max running current 53 8 A 56 5 A Recommended fuses 3 x 63 gL gG 3 x 63 gL gG Fans Phase 1 Voltage 230 V Max running current 5 8 A Compressor Phase 3 Voltage 40...

Page 48: ...ditions 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...

Page 49: ...9 A 99 2 A Nominal running current cooling 7 7 A 9 0 A 13 6 A 14 9 A Max running current 11 2 A 12 5 A 16 9 A 18 2 A Recommended fuses 3 x 20 gL gG 3 x 20 gL gG 3 x 25 gL gG 3 x 25 gL gG Fans Phase 1...

Page 50: ...rator 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 wa...

Page 51: ...A 139 A 140 A Nominal running current cooling 15 9 A 17 2 A 20 5 A 21 8 A Max running current 19 9 A 21 2 A 26 9 A 28 2 A Recommended fuses 3 x 25 gL gG 3 x 32 gL gG 3 x 32 gL gG 3 x 40 gL gG Fans Pha...

Page 52: ...rator 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 wa...

Page 53: ...A 113 A 115 A Nominal running current cooling 27 2 A 29 2 A 31 8 A 33 8 A Max running current 33 8 A 35 8 A 39 8 A 41 8 A Recommended fuses 3 x 40 gL gG 3 x 50 gL gG 3 x 50 gL gG 3 x 50 gL gG Fans Pha...

Page 54: ...rator 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 wa...

Page 55: ...0 Unit Starting current 139 A 142 A Nominal running current cooling 41 0 A 43 7 A Max running current 53 8 A 56 5 A Recommended fuses 3 x 63 gL gG 3 x 63 gL gG Fans Phase 1 Voltage 230 V Max running c...

Page 56: ...rator 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 wa...

Page 57: ...4X 15 SERVICE SPACE FILTERKIT delivered with the unit No Component No Component 1 Air heat exchanger 11 Air purge 2 Compressor 12 Pressure port 3 Switch box 13 Ball valve 1 1 4 BSP 4 Main switch 14 Wa...

Page 58: ...o Component No Component 1 Air heat exchanger 15 Manometer water 2 Compressor 16 Pressure port 3 Switch box 17 Ball valve 1 1 4 BSP 4 Main switch 18 Water filter 1 1 4 BSP 5 Pump switch 19 Pump 6 Digi...

Page 59: ...ent No Component 1 Air heat exchanger 15 Manometer water 2 Compressor 16 Pressure port 3 Switch box 17 Ball valve 1 1 4 BSP 4 Main switch 18 Water filter 1 1 4 BSP 5 Pump switch 19 Pump 6 Digital disp...

Page 60: ...TION 4X 15 SERVICE SPACE FILTERKIT delivered with the unit No Component No Component 1 Air heat exchanger 11 Air purge 2 Compressor 12 Pressure port 3 Switch box 13 Ball valve 1 1 4 BSP 4 Main switch...

Page 61: ...t No Component No Component 1 Air heat exchanger 15 Manometer water 2 Compressor 16 Pressure port 3 Switch box 17 Ball valve 1 1 4 BSP 4 Main switch 18 Water filter 1 1 4 BSP 5 Pump switch 19 Pump 6 D...

Page 62: ...omponent No Component 1 Air heat exchanger 15 Manometer water 2 Compressor 16 Pressure port 3 Switch box 17 Ball valve 1 1 4 BSP 4 Main switch 18 Water filter 1 1 4 BSP 5 Pump switch 19 Pump 6 Digital...

Page 63: ...15 SERVICE SPACE FILTERKIT delivered with the unit No Component No Component 1 Air heat exchanger 11 Air purge 2 Compressor 12 Pressure port 3 Switch box 13 Ball valve 1 1 4 BSP 4 Main switch 14 Wate...

Page 64: ...d with the unit No Component No Component 1 Air heat exchanger 15 Pressure port 2 Compressor 16 Ball valve 3 Switch box 17 Water filter 4 Main switch 18 Pump 5 Pump switch 19 Regulation valve 6 Digita...

Page 65: ...he unit No Component No Component 1 Air heat exchanger 15 Pressure port 2 Compressor 16 Ball valve 3 Switch box 17 Water filter 4 Main switch 18 Pump 5 Pump switch 19 Regulation valve 6 Digital displa...

Page 66: ...N FIXATION 4X 15 CAUTION FOR FAN SERVICE SPACE FILTERKIT delivered with the unit No Component No Component 1 Air heat exchanger 11 Air purge 2 Compressor 12 Pressure port 3 Switch box 13 Ball valve 4...

Page 67: ...ivered with the unit No Component No Component 1 Air heat exchanger 15 Pressure port 2 Compressor 16 Ball valve 3 Switch box 17 Water filter 4 Main switch 18 Pump 5 Pump switch 19 Regulation valve 6 D...

Page 68: ...with the unit No Component No Component 1 Air heat exchanger 15 Pressure port 2 Compressor 16 Ball valve 3 Switch box 17 Water filter 4 Main switch 18 Pump 5 Pump switch 19 Regulation valve 6 Digital...

Page 69: ...he internal refrigeration circuit The water piping is considered to be a common practice and is therefore not described Overview This chapter contains the following topics Topic See page 2 2 Installat...

Page 70: ...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 T1...

Page 71: ...on below shows the functional diagram of the refrigeration circuit of EUWA 5 24KBZW1 It is also applicable for glycol applications REFRIGERANT SIDE WATER SIDE N MODELS B MODELS P MODELS P B MODELS N P...

Page 72: ...e 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 switc...

Page 73: ...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 g Flow switch The fl...

Page 74: ...ional diagram of the refrigeration circuit of EUWY 5 24KBZW1 It is also applicable for glycol applications REFRIGERANT SIDE WATER SIDE N MODELS B MODELS P MODELS P B MODELS N P MODELS HEATING EVAPORAT...

Page 75: ...il type Hi X tubes 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...

Page 76: ...nnect a pressure gauge d Water tempera ture sensor The water temperature sensors are used to control the thermostat function at the heat exchanger inlet e Freeze up sensor This protection device shuts...

Page 77: ...of the EUWA 5 24KBZW1 and EUWY 5 24KBZW1 Switch box layout Wiring diagram Overview This chapter contains the following topics Topic See page 3 2 Main Functions of the EUWA 5 24KBZW1 and EUWY 5 24KBZW1...

Page 78: ...oint ID3 GND X6A X7A S1HP S1HP High pressure switch X8A X9A Q1D Q2D Discharge protector X10A X11A K4S K55 Thermal overcurrent ID4 GND X63A X64A S4LP S5LP Low pressure switch ID5 GND X3M S9S Remote ON...

Page 79: ...11 02 Wiring Layout Part 1 System Outline 1 69 3 1 4 5 3 3 Switch Box Layout EUWA 5 24KBZW1 and EUWY 5 24KBZW1 Double circuit layout The illustration below shows the switch box layout for a double cir...

Page 80: ...below describes the components Wiring diagram symbol Description C1 C2 C3 C4 AC motor capacitors 12 F TR1 TR2 Power supply transformator K1P Pump contactor K6S Pump K4S K5S Circuit 1 circuit 2 K1M K2M...

Page 81: ...chiller types EUWA 5 24KBZW1 and EUWY 5 24KBZW1 X11 X73A X50A X1A X19A X18A X28A X80A X79A X2A X4A X78A X15A X14A X13A X12A X23A X24A X21A X22A Y3R H6P H5P H4P H3P ESH H3P H4P H5P H6P Y3R L N ESH X1M...

Page 82: ...otor 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...

Page 83: ...tcut X70A X2 C5 No5 To A1P C5 No5 X71A X1 B1 2 3 Gnd ID1 ID2 ID3 ID4 ID5 Gnd To A1P X1 B1 B2 B3 Gnd ID1 ID2 ID3 ID4 ID5 Gnd X73A X73A SER Serial communication X78A E3H Evaporator heater tape X79A E4H...

Page 84: ...A Dipswitch 1 S2A Dipswitch 2 1 0 1 circ 1 2 circ 1 Defrost setting only for EUWY 5 24KBZW1 0 Start condition 1 fan defrost 1 5HP 8HP 16HP 1 Start condition 2A B fan defrost 2 10HP 12HP 20HP 24HP 2 3...

Page 85: ...circuit 2 S21HP S22HP PCB Power supply card A71P fuse for pumpcontactor F6 fuse I O PCB fuse controller PCB F3U F1U PCB softstarter for circuit 1 buffertank 55l heater field heater E6H E5H H5P indicat...

Page 86: ...Wiring Layout ESIE11 02 1 76 Part 1 System Outline...

Page 87: ...rmation 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...

Page 88: ...ESIE11 02 2 2 Part 2 Functional Description 3 1 2 5...

Page 89: ...nal Range EUWA 5 24KBZW1 2 4 1 3 Operational Range EUWY 5 24KBZW1 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 24KBZW1 a...

Page 90: ...he operational range illustration above ZL ZH Water Glycol Leaving evaporator water temp C Outdoor temp CDB OPTION STANDARD STANDARD Pattern Abbrevia tion Description Standard operation Pull down area...

Page 91: ...range in cooling mode The illustration below shows the operational range in cooling mode of the EUWY 5 24KBZW1 Operational range in heating mode The illustration below shows the operational range in h...

Page 92: ...range illustration above Pattern Abbrevia tion Description Standard operation Pull down area Protection water circuit against freezing If the units operate below 5 C and are installed in a draughty sp...

Page 93: ...erational Flow Chart Flow chart The flow chart below describes the operation of EUWA 5 24KBZW1 Flow chart The flow chart below describes the operation of EUWY 5 24KBZW1 Power ON Start cooling Thermost...

Page 94: ...r Working Status Compressor working status The table below gives the conditions of the compressor status The compressor is ON when The compressor is OFF when The ON button is pressed AND Thermostat ON...

Page 95: ...mers of the compressor Timer Interval s Use Guard timer 60 The timer starts counting down when the scroll compressor is switched OFF During the countdown the compressor can not be restarted Anti recyc...

Page 96: ...difference r01 Cooling set point default 12 C r03 Heating set point default 30 C only for EUWY 5 24KBZW1 r21 Cooling set point 2 r22 Heating set point 2 only for EUWY 5 24KBZW1 27 C 30 C r02 r04 r01...

Page 97: ...operation of the fan motors depends on the ambient temperature The table below contains the fan settings for different ambient temperatures Selection of fan setting Fan setting 1 or Fan setting 2 is s...

Page 98: ...in heating mode The table below describes the fan relay management in heating mode This is only valid for the heat pump EUWY 5 24KBZW1 Fan relay 1 Fan relay 2 Fan relay 3 Result RY4 RY24 RY5 RY25 RY12...

Page 99: ...1 1 9 Fan Working EUWA 5 24KBZW1 and EUWY 5 24KBZW1 Working principle The fan runs parallel with the compressor operation The operation is not steered by the microchiller controller but by the I O PC...

Page 100: ...4 5 1 10 Crankcase Heater Functional description The crankcase heater should always work when the compressor is in the OFF status The crankcase heater should be used with compressors in order to avoi...

Page 101: ...ater tape management Heater tape control The I O board controls the function of the evaporator heater tape No separate power supply is foreseen for the evaporating heater tape When the main switch is...

Page 102: ...nctional Description ESIE11 02 2 16 Part 2 Functional Description 3 1 2 4 5 1 12 Pump Steering Pump steering A pumpcontact should be present with pumplead 15 s and pumplag 0 s timers taken into accoun...

Page 103: ...he table below contains the characteristics of the freeze up protection for the glycol option Characteristics Freeze up protection Control device Sensor Diagram name R4T Activation Outlet water temper...

Page 104: ...I O PCB and there will be no defrost indication on the controller 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 c...

Page 105: ...d M12F off M21F Medium and M22F off Open Closed Open If Ambient at defrost start time 5 C AND ComprMinFanC1 2 1 M11F off and M12F off M21F off and M22F off Open Open Open If Ambient at defrost start t...

Page 106: ...2A TcoilC1 2 0 6 x Tamb 10 C AND TcoilC1 2 10 C AND Tamb 50 C TimConditional OR Start condition 2B TcoilC1 2 0 6 x Tamb 1 C AND TcoilC1 2 1 C AND Tamb 50 C TimConditional AND TimCompMin Stop condition...

Page 107: ...timer goes to 0 Then defrost requests start 150 s TimOperate1 2 The minimum time that the defrost condition 2B must be met to start the defrost cycle This timer is accumulated time Start or continue t...

Page 108: ...itched off Continue of timer Compressor on by thermostat DI3M1Cdetect closed Stop of timer Compressor switch off by thermostat DI3M1Cdetect open End of timer goes to 0 Now defrost is possible 20 min a...

Page 109: ...m defrost cycles without and with compressor stop Defrost cycle Start TimDefrMin Start TimDefrMax Start TimDefrMask Time Yes No ON OFF ON OFF Defrost BusyC1 Compr DORev Valve Defrost cycle Start TimDe...

Page 110: ...is set to 1 active the unit can be switched on or off as follows When the remote on off switch is opened the unit is switched off and it is not possible to switch the unit on off by pressing the D or...

Page 111: ...KBZW1 and EUWY 5 24KBZW1 Overview This chapter contains the following topics Topic See page 2 2 The Digital Controller 2 26 2 3 Start Stop 2 29 2 4 What Happens in Case of an Alarm or a Warning 2 31 2...

Page 112: ...iendly 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 f...

Page 113: ...for 5 seconds Switch unit on off in heat ing mode Press once Direct access to readout menu sensor b01 b02 b03 Press once Select previous sensor parameter Press once Select previous param eter group or...

Page 114: ...oup or parameter different LEDs related to the parameter group or parameter are displayed Example The LEDs F and G are displayed when accessing a parameter group or when accessing parameters directly...

Page 115: ...e is active proceed as follows Press the C key for approximately 5 seconds the F LED will be extinguished Remote start stop remote cool heat The procedure to start or stop the unit depends on the sett...

Page 116: ...ollowing happens Local h07 0 Remote h0b 1 Switch remote cool heat Switch on the unit automatically Only cool heat selection is possible If start stop set up is and cool heat set up is then to Stage De...

Page 117: ...Protects the unit Gives additional service information Description The unit is shut down The alarm is energized The H symbol is displayed The display starts flashing alternately showing the alarm code...

Page 118: ...t parameters accessible b b01 Evaporator inlet water temperature 0 1 C R D 102 A b02 Evaporator outlet water temperature 0 1 C R D 103 A b03 Not used 0 1 C R D 104 A c c07 Time delay between pump star...

Page 119: ...y to return to the main display If during the procedure no buttons are pressed for 30 seconds the displayed parameter code or value will start flashing After another 30 seconds without pressing any bu...

Page 120: ...ing the procedure no buttons are pressed for 30 seconds the displayed parameter code or value will start flashing After another 30 seconds without pressing any buttons the controller automatically ret...

Page 121: ...e b03 Not used c10 Total running hours of the compressor 1 c11 Total running hours of the compressor 2 c15 Total running hours of the pump REMARKS The parameters b01 b02 and b03 can also be consulted...

Page 122: ...tion 3 1 2 4 5 2 6 Reading or Adjusting Parameter Settings the Programming Procedure Introduction When no buttons are pressed for 5 s the display starts flashing You can exit at every step by leaving...

Page 123: ...you want to adjust the value Adjust the value using the C and D keys Press s to display the value Do you want to select another parameter within the same group Stop Press s for 5 s to access only dir...

Page 124: ...The Digital Controller ESIE11 02 2 38 Part 2 Functional Description 3 1 2 4 5 2 7 Menu Overview Overview l p function is not used...

Page 125: ...ility The RS485 communication settings for Modbus protocol are baudrate 9600 stop bit 2 parity none Controller settings Following parameters have to be programmed to activate Modbus communication H23...

Page 126: ...P N A W U E B F 0 1 5 C A W U E EUWYN P B5 24KB EWWP014 065KB EWLP012 065KB H L G0 G 1cm H L 120 1 4 W 120 Ohm 2 1 3 EKRUMCA EKRUMCA EKRUMCA EKAC10C 2x 0 35 mm2 AWG 22 2x 1 5 mm2 AWG 16 RS485 24 Vac G...

Page 127: ...ark Modbus communication and remote controller cannot be selected at the same time When Modbus communication is enabled parameter code H23 1 the remote controller will indicate OFFLINE To enable the u...

Page 128: ...The Digital Controller ESIE11 02 2 42 Part 2 Functional Description 3 1 2 4 5...

Page 129: ...se 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 i...

Page 130: ...ESIE11 02 3 2 Part 3 Troubleshooting 3 1 3 5...

Page 131: ...first step in a troubleshooting procedure is to check the inputs and outputs This chapter contains an overview of the inputs and outputs Overview This chapter contains the following topics Topic See...

Page 132: ...Description Analog input Sensor R3T X1 B1 GND e1 Inlet water temperature sensor R4T X1 B2 GND e2 Outlet water temperature sensor Digital input Trans ducer K4S S1HP QID K5S S2HP Q2D X1 ID3 GND hp1 Over...

Page 133: ...h off pump Request to switch on pump DI10 Reverse valve request X C1 2 NO4 Request to switch the pump off Request to switch the pump off Description Wiring diagram symbol Input to digital con troller...

Page 134: ...3 Troubleshooting 3 1 3 4 5 Analog inputs The table below describes the analog inputs EUWA EUWY 1 circ 2 circ 1 circ 2 circ AI1 R6T Ambient sensor X X X X AI2 R7T Coil temperature sensor circuit 1 X...

Page 135: ...uction The malfunction indication on the digital controller display helps you to find the cause of the problem This chapter describes the malfunction indications and the safeties Overview This chapter...

Page 136: ...n this case contact a licensed electrician Alarm Automatic 3 11 el1 indicates that there is a power supply error example noise In this case contact a licensed electrician Alarm Automatic el2 indicates...

Page 137: ...nning hours of the compressor 1 direct parameter c10 has exceeded the setting of the timer threshold for maintenance warning user parameter c14 Warning Manual hc2 indicates that the compressor 2 requi...

Page 138: ...essor 2 requires maintenance the total running hours of the compressor 2 direct parameter c11 has exceeded the setting of the timer threshold for maintenance warning user parameter c14 To reset the ma...

Page 139: ...L ZH 0 5 bar Manual software reset S4LP S5LP Switch ON OFF Outlet water temp too low freeze up protection a1 Outlet water temp temp 4 0 C temp 11 5 C temp 6 5 C Standard ZL option ZH option Manual sof...

Page 140: ...ority Service information for alarm indications If the error is solved H1P and H2P keep their latest status They can only be reset by switching OFF ON the power from the I O PCB If alarm codes fl and...

Page 141: ...Overview This chapter contains the following topics Topic See page 3 2 Checking the Temperature Sensors 3 14 3 3 I O PCB sensors R3T and R4T for EUWA 5 24KBZW1 and EUWY 5 24KBZW1 3 15 3 4 I O PCB sen...

Page 142: ...The following sensors of the EUWA 5 24KBZW1 and EUWY 5 24KBZW1 are connected to the I O PCB R3T R4T and R6T R7T R8T How to check To check the temperature sensors proceed as follows Step Action 1 Disc...

Page 143: ...27 78 1 81 1 76 1 71 29 109 30 105 70 102 20 25 10 10 10 00 9 90 79 1 76 1 71 1 68 28 103 80 100 40 97 16 26 9 73 9 63 9 52 80 1 71 1 66 1 62 27 98 63 95 47 92 41 27 9 38 9 28 9 18 81 1 66 1 62 1 57...

Page 144: ...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 1...

Page 145: ...PCB The block diagram below shows the digital input route from the transducer e g thermostat pressostat reverse phase etc to the PCB input Output route from PCB The output is generated by the PCB If...

Page 146: ...voltage and their fuse codes Circuit Wiring code Type voltage Fuse code Main supply L1 L2 L3 N 3 phases 400 V AC F1 F2 F3 Control circuit I O PCB L1 N L3 N 1 phase 230 V AC 1 phase 230 V AC F4 F1U Con...

Page 147: ...5 A 5 A 5 A 5 A 5 A 5 A 5 A F1U 5 A 5 A 5 A 5 A 5 A 5 A 5 A F3U 315 mAT 315 mAT 315 mAT 315 mAT 315 mAT 315 mAT 315 mAT K4S 9 A 13 A 16 A 24 A 13 A 16 A 24 A K5S ___ ___ ___ ___ 13 A 16 A 24 A K6S st...

Page 148: ...ly be reset by switching the I O PCB OFF ON Error list microchiller compact controller The table below contains an error list for the microchiller compact controller Microchiller compact controller I...

Page 149: ...X9A X9A Check Q1D Check Q2D Check shortcut hp1 OFF OFF Wireharness between I O PCB and microchiller compact X71A X1 Checkconnectionson X71A I O PCB Checkconnectionson X1 microchiller compact hp1 ON ON...

Page 150: ...fuse of circuit 1 blown F8 Check fuse Thermal protector fan circuit 1 Q21F Q22F X14A X15A Check Q21F Check Q22F Wiring connector X23A X24A Check wiring connector X23A Check wiring connector X24A PCB f...

Page 151: ...it repair are described Not all repair procedures are described Some procedures are considered common practice Overview This chapter contains the following topics Topic See page 4 2 Items to Be Checke...

Page 152: ...correct it if necessary 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 Compresso...

Page 153: ...ld wiring Defective control devices pump relay Flow switch Pump operation Field wiring Control devices Discharge ther mal protector Refrigerant shortage Operation out of range Refrigerant leak Operati...

Page 154: ...s to comply with all relevant European and national regulations Step Action 1 Recover the refrigerant from the unit It is strictly forbidden to release refrigerant into the atmosphere during service o...

Page 155: ...t not modified resetting the timers switching the unit on off in cooling or heating Lock the keyboard When user parameter h09 is set to 1 the above described advanced features can be carried out using...

Page 156: ...emove 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 Step Ac...

Page 157: ...1 P9 should be equal to 9 To exit the factory menu To exit the factory menu when you have changed all parameters proceed as follows Parameter code Description Default value S P Unit of measurement EUW...

Page 158: ...emove 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 Step Ac...

Page 159: ...exit the factory menu when you have changed all parameters proceed as follows Parameter code Description Default value S P Unit of measurement EUWY 5 8 10 12K standard EUWY 5 8 10 12K OP ZL EUWY 5 8...

Page 160: ...0 0 0 0 0 R W 4 4 ANA 15 Probe B3 calibration 1 9 F F 0 C F 0 0 0 0 0 0 0 0 0 0 0 0 R W 5 5 ANA 16 1 9 F F 0 C F 21 Digital filter 1 9 U F 4 4 4 4 4 4 4 4 4 4 4 4 4 R W 20 227 INT 22 Input limitation...

Page 161: ...INT c05 Stop delay between the two compressors 1 9 U F 0 sec 0 0 0 0 0 0 R W 29 236 INT c06 Time delay at startup 1 9 U F 0 sec 0 0 0 0 0 0 0 0 0 0 0 0 R W 30 237 INT c07 ON delay pump compr 1 9 U U 2...

Page 162: ...H10 Serial address 1 9 U U 1 1 1 1 1 1 1 1 1 1 1 1 1 R W 58 265 INT H11 Output modes 1 9 F F 0 0 0 0 9 9 9 0 0 0 9 9 9 R W 59 266 INT H12 Capacity control and reversing valve logic 1 9 F F 1 0 0 0 0 0...

Page 163: ...30 30 30 30 30 R W 43 43 ANA r04 Heating hysteresis 1 9 D D 3 C 3 3 3 3 3 3 R W 44 44 ANA r05 Compressor rotation 1 9 F F 0 1 1 1 1 1 1 R W 78 285 INT r06 Type of compressor control 1 9 F F 0 C 0 0 0...

Page 164: ...ZH R W Supervis variable Modbus Type r31 Heating compensation constant 1 9 U F 0 0 0 0 0 0 0 0 0 0 0 0 0 R W 60 60 ANA r32 1 9 D F 120 r33 1 9 F F 30 r34 Enable free cooling free heating 1 9 F F 0 0...

Page 165: ...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 1 2 3 S1A 4 1 2 S2A S1A Dipswitch 1 S2...

Page 166: ...protection operation The thermal protection operates as follows Ambient temperature 43 C If the unit is operating at an ambient temperature of more than 43 C and a restart of the compressor s is reque...

Page 167: ...e 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 i...

Page 168: ...ESIE11 02 4 2 Part 4 Commissioning and Test Run 3 1 4 5...

Page 169: ...4 5 1 4 External Static Pressure EUWA 5 24KBZW1 4 8 1 5 External Static Pressure EUWY 5 24KBZW1 4 10 1 6 Static Pressure of the Pump for EUWA 5 24KBZW1 and EUWY 5 24KBZW1 4 12 1 7 Water Pressure Drop...

Page 170: ...n 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 winte...

Page 171: ...itch 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 c...

Page 172: ...sor 240 s kg m Specific mass of the fluid water 1000 kg m d K Thermostat step difference dinlet water control 3 K Cw J kgK Specific heat capacity of the fluid Cw water 4186 J kgK 0 5 x Q x t V m 2 x x...

Page 173: ...7 3 4 5 1 Ammonium ion mg NH4 l 1 0 0 1 0 3 0 1 Corrosion Remaining chloride mg Cl l 0 3 0 3 0 25 0 3 Corrosion Free carbide mg CO2 l 4 0 4 0 0 4 4 0 Corrosion Stability index Corrosion scale Evaporat...

Page 174: ...un 3 1 4 5 1 4 External Static Pressure EUWA 5 24KBZW1 External static pressure The illustration below shows the external static pressure of the unit depending on the water flow 0 50 100 150 200 250 3...

Page 175: ...and maximum allowed water flowrange See Technical Specifications EUWA 5 8KBZW1 on page 1 5 Technical Specifications EUWA 10 12KBZW1 on page 1 8 Technical Specifications EUWA 16 20KBZW1 on page 1 11 T...

Page 176: ...1 4 5 1 5 External Static Pressure EUWY 5 24KBZW1 External static pressure The illustration below shows the external static pressure of the unit depending on the water flow 0 50 100 150 200 250 300 35...

Page 177: ...and maximum allowed water flowrange See Technical Specifications EUWY 5 8KBZW1 on page 1 17 Technical Specifications EUWY 10 12KBZW1 on page 1 20 Technical Specifications EUWY 16 20KBZW1 on page 1 23...

Page 178: ...3 1 4 5 1 6 Static Pressure of the Pump for EUWA 5 24KBZW1 and EUWY 5 24KBZW1 Static pressure The illustration below shows the static pressure of the pump depending on the water flow and the pump typ...

Page 179: ...Test Run Checks Part 4 Commissioning and Test Run 4 13 3 4 5 1 Symbols The table below describes the symbols Symbol Description SP Static pressure of pump WF Waterflow rate 1 CM3 3 2 CM5 3 3 CM10 2 4...

Page 180: ...and Test Run 3 1 4 5 1 7 Water Pressure Drop through Evaporator EUWA 5 12KBZW1 Water pressure drop The illustration below shows the water pressure drop through evaporator for EUWA 5 12KBZW1 1 00 10 0...

Page 181: ...use damage to or malfunction of the unit See also minimum and maximum allowed water flowrange See Technical Specifications EUWA 5 8KBZW1 on page 1 5 and Technical Specifications EUWA 10 12KBZW1 on pag...

Page 182: ...oning and Test Run 3 1 4 5 1 8 Water Pressure Drop through Evaporator EUWA 16 24KBZW1 Water pressure drop The illustration below shows the water pressure drop through evaporator for EUWA 16 24KBZW1 1...

Page 183: ...s can cause damage to or malfunction of the unit See also minimum and maximum allowed water flowrange See Technical Specifications EUWA 16 20KBZW1 on page 1 11 and Technical Specifications EUWA 24KBZW...

Page 184: ...g and Test Run 3 1 4 5 1 9 Water Pressure Drop through Evaporator EUWY 5 12KBZW1 Water pressure drop The illustration below shows the water pressure drop through evaporator for EUWY 5 12KBZW1 1 00 10...

Page 185: ...n cause damage to or malfunction of the unit See also minimum and maximum allowed water flowrange See Technical Specifications EUWY 5 8KBZW1 on page 1 17 and Technical Specifications EUWY 10 12KBZW1 o...

Page 186: ...oning and Test Run 3 1 4 5 1 10 Water Pressure Drop through Evaporator EUWY 16 24KBZW1 Water pressure drop The illustration below shows the water pressure drop through evaporator for EUWY 16 24KBZW1 1...

Page 187: ...curves can cause damage to or malfunction of the unit See also minimum and maximum allowed water flowrange See Technical Specifications EUWY 16 20KBZW1 on page 1 23 and Technical Specifications EUWY 2...

Page 188: ...solator 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 insta...

Page 189: ...the 4 way valve in cooling mode 5 1 6 4 2 3 a b e d f c Symbol Description Symbol Description 1 Discharge tube from the compressor a Pilot body 2 Suction tube to the compressor b Coil 3 Tube to the pl...

Page 190: ...Left pilot back capil lary tube Right pilot back capil lary tube Hot Cool Hot as in column 1 Cool as in column 2 Temperature of valve body Temperature of valve body Check Cause Procedure Check the ele...

Page 191: ...piston cup head leaks 1 Stop the unit 2 After pressure equaliza tion restart with energized solenoid 3 If the valve shifts retry with the compressor on If there is no reversal replace the valve Hot C...

Page 192: ...arge 2 Raise the head pressure 3 If there is still no shift replace the valve There is body damage Replace the valve Hot Warm Warm Hot Hot Hot Both parts of the pilot are still open 1 Raise the head p...

Page 193: ...If there is still no shift replace the valve Hot Cool Hot as in column 1 Cool as in column 1 Hot Temper ature of valve body There is dirt in one bleed hole 1 Raise the head pressure 2 Operate the sole...

Page 194: ...eading 1 2 3 4 5 6 Cause Procedure Hot Cool Hot as in column 1 Cool as in column 1 Temper ature of valve body Warmer than valve body The piston needle is leaking at the end of the slide 1 Operate the...

Page 195: ...e tables in this chapter contain an overview of the measurements that you can carry out Use it as a guideline during commissioning For the location of the measurement points refer to the piping and wi...

Page 196: ...andard 5 20 C For ZH 5 20 C For ZL 10 20 C Heating 35 50 C only for EUWY 5 24KBZW1 Outdoor temperature 15 43 C for standard unit 10 43 C for glycol unit Temperature difference at the air side 10 15 C...

Page 197: ...0KBZW1 EUWAN12KBZW1 20 5 A 26 9 A 3 x 40 gL gG EUWAP12KBZW1 21 9 A 28 3 A 3 x 40 gL gG EUWAB12KBZW1 EUWAN16KBZW1 27 2 A 31 8 A 3 x 40 gL gG EUWAP16KBZW1 29 2 A 33 8 A 3 x 50 gL gG EUWAB16KBZW1 EUWAN20...

Page 198: ...Test Run and Operation Data ESIE11 02 4 32 Part 4 Commissioning and Test Run 3 1 4 5...

Page 199: ...ce should be set up for operation at maximum capacity or to avoid damage The following chapters explain how to or when to maintain the units It is also applicable on other types of Daikin chillers Wha...

Page 200: ...ESIE11 02 5 2 Part 5 Maintenance 3 1 5...

Page 201: ...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 con...

Page 202: ...eaning 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 temperat...

Page 203: ...spect the bulb power head capillary connection no chaffing Inspect the equaliser line visually Inspect the feeler bulb suction pipe connection insulation Flow switch and pump interlock Follow the inst...

Page 204: ...trol Devices Preventive maintenance A program of scheduled maintenance should be set up and followed The items mentioned are to be used as a guide and must be used in combination with sound electrical...

Page 205: ...l Check the operation of the safety devices No operation can cause damage of the unit Inspection checks and actions Remarks Check the refrigerant circuit If the unit leaks contact your dealer Inspecti...

Page 206: ...1 5 5 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...

Page 207: ...ctrical Error Overview EUWA 5 24KBZW1 and EUWY 5 24KBZW1 k 3 20 Electrical Specifications EUWA 10 12KBZW1 k 1 33 EUWA 16 20KBZW1 k 1 35 EUWA 24KBZW1 k 1 37 EUWA 5 8KBZW1 k 1 31 EUWY 10 12KBZW1 k 1 41...

Page 208: ...rational Flow Chart k 2 7 Operational Range EUWA 5 24KBZW1 k 2 4 EUWY 5 24KBZW1 k 2 5 Outlook Drawing EUWAB10 12KBZW1 EUWYB10 12KBZW1 k 1 52 EUWAB16KBZW1 EUWAB16KBZW1 k 1 55 EUWAB20 24KBZW1 EUWYB20 24...

Page 209: ...k 1 11 EUWA 24KBZW1 k 1 14 EUWA 5 8KBZW1 k 1 5 EUWY 10 12KBZW1 k 1 20 EUWY 16 20KBZW1 k 1 23 EUWY 24KBZW1 k 1 26 EUWY 5 8KBZW1 k 1 17 Test Run and Operation Data for EUWA 5 24KBZW1 and EUWY 5 24KBZW1...

Page 210: ...ESIE11 02 4 Index 3 1 4 5...

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