McQuay. Ceiling Mounted Water Source Heat Pump. WCRH, WCRW 048, 060, 070 Design 1. Replacement Parts List No Revision C 10/2016

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1 Replacement Parts List No Revision C 10/2016 McQuay Ceiling Mounted Water Source Heat Pump WCRH, WCRW 048, 060, 070 Design 1 To find your Daikin Applied parts distributor, call or visit

2 Contents Parts List Revision History...3 Nomenclature Serial Number...4 Model Number...4 Field Installed Accessories...5, 6 Basic Unit Layout...7 Cabinet- Drain Pan, Condensate Hose, Filter, Hanger Bracket, Cabinet Gaskets & Access Panels...8 Blower Assembly- Motor, Capacitor, Wheel, Housing...9 Refrigeration Circuit Reversing Valve & Solenoid, Compressor, Condenser, Evaporator, Fusible Plug, High Pressure Switch, Low Pressure Switch, Coremax Valves... 10, 11 Control Box Microtech 2000, Alerton Controller, DDC Less Board...12, 13 Mark IV Controller...14, 15 Critical Parts List...CPL1 Ceiling Mounted WSHP; WCRH/WCRW Design 1 Rev C 10/16 RPL / Page 2

3 Parts List Revision History Revision Date Description New 07/08 New A 02/09 Page 9 - Ref No. 348, Change Mount, Arm-Mount p/n Qty from 1 to 3 all unit sizes. B 02/09 Page 10- Remove the note from compressor mounting detail drawing (Size 24 shown). C 10/16 Page CPL1- Added new page for Critical Parts List. Daikin Applied, Industrial Park Blvd., P.O. Box 1551, Minneapolis, MN (763) Ceiling Mounted WSHP; WCRH/WCRW Design 1 Rev C 10/16 RPL / Page 3

4 Plant Identification AUB = Auburn U= Unit Nomenclature Serial Number AUB U Year of Manufacture 05= = = 2007 etc. Model Number Serial Number (build sequence) Month of Manufacture 01= January 02= February 03= March 04= April 05= May 06= June 07= July 08= August 09= September 10= October 11= November 12= December W CRH M K Y L E 01 YY A C Y YY Y YYY YYY YYY R Y YYY Y Y Y E 1 C 2 Code Code 01= Unit Type W= Water Source Heat Pump Code 02= Product Identifier CRH= R22, Ceiling Mounted, Standard Range CRW= R22, Ceiling Mounted, Geothermal Range Code 03= Design Series 1= Design 1 Code 04= Unit Size 048= BtuH Nominal Cooling 060= BtuH Nominal Cooling 070= BtuH Nominal Cooling Code 05= Controls A= Alerton E= DDC Less Board K= MicroTech 2000 w/ LonMark Card L= MicroTech 2000 w/ LonWorks Card M= Mark IV Code 06= Voltage E= F= K= L= Code 07= Cabinet Height Y= None Code 08= Return Air L= Left Hand Return Air R= Right Hand Return Air Code 09= Discharge Air E= End Discharge S= Straight Discharge Code 10= Blower Motor 01= Standard Code 11= Discharge Grille/ Cabinet Type YY= None Code 12= Construction Type A= Standard E= Indoor Air Quality (IAQ) Code 13= Water to Refrigerant Heat Exchanger C= Copper Inner Tube/ Steel Outer Tube S= Cupro Nickel Inner Tube/ Steel Outer Tube Y= None Code 14= Heating Options Y= None Code 15= Dehumidification YY= None Code 16= Piping Hand Y= None Code 17= Thermostat Control YYY= None Codes 18= Night Control YYY= None Code 19= Desuperheater YYY= None Code 20= Refrigerant R= R22 Code 21= Power Connection Y= None Code 22= Cabinet Electrical 75V= 75 Volt Control Transformer YYY= None Code 23= Water Flow Control Y= None Code 24= Always Y Code 25= Outside Air Y= None Code 26= Agency Type C= ETL, CETL, ARI, MEA E= ETL, CETL, CE Code 27= Packaging Code 28= Warranty Code 29= Always 2 (Product Style 2) Ceiling Mounted WSHP; WCRH/WCRW Design 1 Rev C 10/16 RPL / Page 4

5 Field Installed Accessories Relays Description Part Number Auxiliary Relay- 24V, Normally Open. 24V 1PDT Dry Contact Relay- 5 VDC in, AC/DC out, Normally Open Motorized Valve Control Relay Kit- Kit contains circuit board p/n and 6-pin plug p/n Pump Restart Relay- Used on Mark IV units Time Schedule Relay- 24 VDC relay controls the Mark IV "U" terminal Ball Valves and Motorized Valves Description Part Number Combination Shutoff/Balancing Valve with Memory Stop (2 per unit) Motorized Valve Kit- Includes valve/operator, conduit assy. 300 PSIG max Valve Body V Actuator Filters and Filter Rack- 048 Description Part Number Filter Rack Filter- 1" Throwaway Filter- 2" Throwaway Filters and Filter Rack- 060, 070 Description Part Number Filter Rack Filter- 1" Throwaway Filter- 2" Throwaway Hoses Description Specification Part Number Hose Assy- Fire Rated Condensate 3/4" X 2' /4" X 3' Hose Assy- Fire Rated Supply/Return 1/2" X 2' /2" X 3' Hose Assy- Plastic Condensate 3/4" X 30" /4" X 36" Flow Control Hose Kit- Fire Rated Supply/Return 3.0 GPM Includes: Supply Ball Valve, Y-Strainer, and 24" Stainless Steel Hose. 3.5 GPM Return Flow Controller, Ball Valve, (2) P/T, 24" Stainless Steel Hose. 4.0 GPM GPM GPM GPM GPM GPM GPM GPM GPM GPM GPM GPM GPM GPM Ceiling Mounted WSHP; WCRH/WCRW Design 1 Rev C 10/16 RPL / Page 5

6 Field Installed Accessories Continued Remote Sensor, Thermostat Guard Description Part Number Remote Sensor for stats & Thermostat Guard- Clear plastic guard with ring base, lock and key Mark IV Unit Thermostats and Wall Plates Description Part No. Thermostat- Programmable with Remote Sensor Wall Stat- AC/DC, ACO, 7 Day Programmable, 2 Heat/2 Cool with Wall Plate Wall Stat- AC/DC, ACO, Non- Programmable, 2 Heat/2 Cool, NSB & OR with Wall Plate Wall Plate- Insulated Mark IV Unit Control Accessories Description Specification Part No. Multiple Unit Control Panel- Master & 1 Slave Allows master unit to be controlled by any t-stat. Slave units "follow" Control of 3 units with paralleled operation. Not recommended with Boilerless System 24 VDC Aux. Relay Boilerless System Kit Components listed below. Boilerless System Kit Description Part No. Qty. Control Box Cover- Control Box P.C. Board Sensor- Temperature Harness Assembly Inverter Relay Resistor Multiple Unit Control Panel Ref. Description Part Qty. No. Number 310 Cover- Control Box Circuit Board Stand Off- Circuit Board Box Ceiling Mounted WSHP; WCRH/WCRW Design 1 Rev C 10/16 RPL / Page 6

7 Basic Unit Layout Expansion Valve Condenser Coil Evaporator (Air to Refrigerant Heat Exchanger) Compressor Blower Reversing Valve Ceiling Mounted WSHP; WCRH/WCRW Design 1 Rev C 10/16 RPL / Page 7

8 Cabinet Drain Pan, Condensate Hose, Filter, Compressor Damper & Vibration Insulation, Hanger Bracket, Cabinet Gaskets & Access Panels Hanger Bracket Detail (4 per unit) Base Pan Detail Control Box Ref. Part Part Unit Size No. Description Number Drain Pan Terminal, Ring- Condensate Overflow Wire Hose- Condensate Plate- Damper Insulation- Vibration Cover- Top Panel- Access Panel- Blower Panel- Rear Gasket- Edging Filter 16 x 22¼ x Filter 22 x 22 x Kit- Unit Hanger N/S= Not shown on diagram. 1 Kit includes bracket (p/n ), grommet (p/n ), and hardware. 2 Attaches using a stand off p/n Ceiling Mounted WSHP; WCRH/WCRW Design 1 Rev C 10/16 RPL / Page 8

9 Blower Assembly Motor, Capacitor, Wheel, Housing Blower Panel (see previous page) Motor Voltage Ref Part Part No. Description Number 330 Motor- Blower.750 HP Motor- Blower.750 HP Motor- Blower.750 HP Capacitor- Blower Motor 10 MFD 440V Capacitor- Blower Motor 15 MFD 370V Housing- Blower Wheel- Blower Bracket- Capacitor Mount, Band- Motor Mount, Arm- Motor Ceiling Mounted WSHP; WCRH/WCRW Design 1 Rev C 10/16 RPL / Page 9

10 Refrigeration Circuit Reversing Valve & Solenoid, Compressor, Condenser, Evaporator, Fusible Plug, High Pressure Switch, Low Pressure Switch, Coremax Valves Diagrams Evaporator/ TXV Detail 92 Condenser Detail Compressor Reversing Valve Piping Compressor Mounting Detail 160 TXV Bulb Low Temp. Switch Bulb (see control box for p/n) Coremax Valve Assy 105 Coremax Valve Assembly Detail 151A 151B 151C Ceiling Mounted WSHP; WCRH/WCRW Design 1 Rev C 10/16 RPL / Page 10

11 Refrigeration Circuit Reversing Valve & Solenoid, Compressor, Condenser, Evaporator, Fusible Plug, High Pressure Switch, Low Pressure Switch, Coremax Valves Components Unit Size Ref Part Part No. Description Number 57 Sleeve- Compressor Mount Sleeve- Compressor Mount WB Nut- Compressor Mount Grommet- Compressor Mount Grommet- Compressor Mount 4RHZ Compressor Compressor Compressor Compressor Compressor Compressor Compressor Compressor Compressor Compressor Compressor Compressor Condenser Copper Inner Tube (C13= C) Condenser Copper Inner Tube (C13= C) Condenser Copper Inner Tube (C13= C) Condenser CUNI Inner Tube (C13= S) Condenser CUNI Inner Tube (C13= S) Condenser CUNI Inner Tube (C13= S) Adapter.875 OBS x.750 FPT Flange Nut- Hex Evaporator Coil Evaporator Coil Valve- Reversing Solenoid- Reversing Valve 24VAC Control- High Pressure 400 ± 10PSI Control- Low Pressure 22 ± 7PSI/7 ± 3PSI A Seat- Fitting B Core- Valve C Cap- Valve Fusible Plug Assy Plug Only 283 F Valve- Expansion Valve- Expansion Ceiling Mounted WSHP; WCRH/WCRW Design 1 Rev C 10/16 RPL / Page 11

12 Control Box Microtech 2000 Controller with LonMark: Code 05= K Microtech 2000 Controller with LonWorks: Code 05= L Alerton Controller: Code 05= A DDC Less Board: Code 05= E Diagrams B 249A Ceiling Mounted WSHP; WCRH/WCRW Design 1 Rev C 10/16 RPL / Page 12

13 Control Box Microtech 2000 Controller with LonMark: Code 05= K Microtech 2000 Controller with LonWorks: Code 05= L Alerton Controller: Code 05= A DDC Less Board: Code 05= E Components Unit Size Ref Part Part No. Description Number 67 Bracket- Capacitor Capacitor- Compressor 40MFD/ 440V Capacitor- Compressor 80MFD/ 370V Capacitor- Compressor 80MFD/ 440V Control- Temperature, Low Limit WCRW Units 6.5 /17.5 ± 2 F WCRH Units +28 /+38 F PC Board- Main Controller Microtech 2000 w/lonmark Code 05= K Microtech 2000 w/lonworks Code 05= L Alerton Code 05= A Contactor- Compressor 24V 2PDT Contactor- Compressor 24V 2PDT Contactor- Fan 24V 1PDT Stand Off- PC Board A Board- Terminal LO Volt 7- Position B Block- Terminal ELUPC Transformer Transformer Transformer N/S Sensor- Air 10K/ N/S= Not shown on diagram. Ceiling Mounted WSHP; WCRH/WCRW Design 1 Rev C 10/16 RPL / Page 13

14 Control Box Mark IV Controller: Code 05= M Diagrams Ceiling Mounted WSHP; WCRH/WCRW Design 1 Rev C 10/16 RPL / Page 14

15 Control Box Mark IV Controller: Code 05= M Components Unit Size Ref Part Part No. Description Number 67 Bracket- Capacitor Capacitor- Compressor 40MFD/ 440V Capacitor- Compressor 80MFD/ 370V Capacitor- Compressor 80MFD/ 440V Control- Temperature, Low Limit WCRW Units 6.5 /17.5 ± 2 F WCRH Units +28 /+38 F PC Board- Main Controller Mark IV Code 05= M Bracket- Low Voltage Barrier Contactor- Compressor 208/240V 3PDT Contactor- Compressor 208/240V 2PDT Contactor- Compressor 24V 2PDT Contactor- Fan 24V 1PDT Stand Off- PC Board Transformer Transformer Transformer Bracket- Mark IV Support Ceiling Mounted WSHP; WCRH/WCRW Design 1 Rev C 10/16 RPL / Page 15

16 Critical Daikin Applied OEM Parts Are What Your HVAC Unit Needs! McQuay Ceiling Mounted Water Source Heat Pump WCRH, WCRW Design 1 Critical Components UNIT SIZE Voltage Part Number Controls Mark IV AC ALL ALL Microtech LonWorks ALL ALL Microtech LonMark ALL ALL Alerton ALL ALL Motor 3/4 HP, 900 rpm 048, 060, /60/ /4 HP, 900 rpm 048, 060, /60/ /4 HP, 900 rpm 048, 060, /4 HP, 900 rpm 048, 060, Wheel Metal ALL ALL Compressor BTU /60/ BTU /60/ BTU BTU BTU /60/ BTU /60/ BTU BTU BTU /60/ BTU /60/ BTU BTU Call Your Local Daikin Applied Parts Distributor For All Your Parts Needs. To Locate A Distributor, Go To or Call PARTS Rev. C 10/2016 CPL Page 1 of 1