McQuay. Vertical Water Source Heat Pump. FCV, FCG, FCW 036, 042 Vintage A. Last Manufactured: 1993

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1 Replacement Parts List No Revision D 08/2017 McQuay Vertical Water Source Heat Pump FCV, FCG, FCW 036, 042 Vintage A Last Manufactured: 1993 To find your Daikin Applied parts distributor, call or visit

2 Contents Parts List Revision History... 3 Nomenclatures Serial Number... 4 Model Number... 4 Field Installed Accessories Thermostats and Subbases for Electromechanical Control Units... 5 Thermostats and Subbases for Mark IV Control Units... 5 Thermostat Accessories... 6 Hoses & Valves... 6 Filters and Filter Components... 6 Unit Accessories... 7 Refrigeration Circuit Diagram... 8 Components... 9, 10 Fan and Housing Assembly...11 Control Box Accessory & Standard Control Layout MicroTech Control Layout Components... 14, 15 Critical Parts List... CPL1 WSHP; FCV,FCG,FCW 036, 042 Vintage A Rev. D 08/17 RPL / Page 2

3 Parts List Revision History Revision Date A 06/99 Page 3-Added Revision History page. Page 4-Correct part numbers for Programmable Microelectronic Thermostats on Electromechanical Control units. B 07/06 Page 12- Bub#18 Changed blower housing pn to C 01/13 Reformat to current standards. Change PM6.5 to CS6. Change p/ns to 9 Digits. Page 4- Added Serial Number (2/1999 to present). CPL1- Add Critical Parts List. D 08/17 Rebrand Daikin. Delete sheet metal. Pages Combine onto one page Fan and Housing Assembly. Pages Delete Panels and Cabinet Assembly. CPL1- Rebrand and delete Refrigeration Circuit. Daikin Applied, Industrial Park Blvd., P.O. Box 1551, Minneapolis, MN (763) WSHP; FCV,FCG,FCW 036, 042 Vintage A Rev. D 08/17 RPL / Page 3

4 Nomenclatures Serial Number 7 U A Plant Identification Number 7 = Auburn Year Manufactured S = 1987 T = 1988 U = 1989 V= 1990 W= 1991 X= 1992 Y= 1993 Engineering Revision Serial Number Month Manufactured A=January G= July B=February I=August C=March J=September D= April K=October E= May L=November F= June M=December Digits 1-3 Model Type FCV = Floor Concealed Vertical Water Source Heat Pump FCG = Floor Concealed Vertical Cooling Only FCW = Floor Concealed Vertical Extended Range Heat Pump Digits 4-7 Unit Size / Vintage 036A = 36,500 Nominal Cooling Btuh 042A = 41,000 Nominal Cooling Btuh Model Number FCG 036A E G L Digit 10 Return Air Arrangement L = Left Hand Return R = Right Hand Return Digit 9 Voltage G = 208- N = 265/60/1 F = 208- T = Q = Digit 8 Control System E = Electromechanical Control M = Mark IV Control C = MicroTech Control WSHP; FCV,FCG,FCW 036, 042 Vintage A Rev. D 08/17 RPL / Page 4

5 Field Installed Accessories Thermostats & Subbases for Electromechanical Control Unit Part Number STANDARD MANUAL CHANGEOVER THERMOSTAT & SUBBASE. Honeywell T834C with no LED. Mounts vertically. System "Heat-Off-Cool" switch and fan. "On-Auto" switch. (Includes subbase) STANDARD AUTOMATIC CHANGEOVER THERMOSTAT & SUBBASE. Thermostat Honeywell T874/Q674. LED for "Service." Mounts horizontal. System "Off-Auto" switch and fan "On-Auto" switch. Subbase DELUXE AUTOMATIC CHANGEOVER THERMOSTAT & SUBBASE WITH NIGHT SETBACK. Honeywell T874/Q674. LED for "Service." Mounts horizontal. Requires factory installed night setback relay or field installed night setback or night setback/demand control relay. Night setback bulb set 8 o F below day heating setpoint. System "Off-Auto" switch and fan "On-Auto" switch. Requires minimum of 6 wires. PROGRAMMABLE MICROELECTRONIC THERMOSTAT. Auto or manual changeover. Mounts horizontal. System "Off-Auto" switch, temp. "Heat-Auto-Cool" switch and fan "On-Auto" switch. PROGRAMMABLE MICROELECTRONIC THERMOSTAT WITH REMOTE SENSOR. Auto or manual changeover. Mounts horizontal. System "Off-Auto" switch, temp. "Heat-Auto-Cool" switch and fan "On-Auto" switch. Honeywell T862. *Replaces (Digistat HP-2000DC) and (Digistat HP-1000 DC) Thermostat. Thermostat Subbase * (Includes subbase) (Includes subbase) Thermostats & Subbases for Mark IV Control Unit (Includes subbase) Thermostat ** STANDARD MANUAL CHANGEOVER THERMOSTAT & SUBBASE. Honeywell T834C with no LED. Mounts vertically. System "Heat-Off-Cool" switch and fan. "On-Auto" switch. STANDARD AUTOMATIC CHANGEOVER THERMOSTAT & SUBBASE. Honeywell T874/Q674. LED for "Service." Mounts horizontal. System "Off-Auto" switch and fan "On-Auto" switch. Subbase STANDARD MANUAL & AUTO CHANGEOVER THERMOSTAT & Thermostat SUBBASE. Honeywell T874/Q674. LED for "Service." Mounts horizontal. System "Off-Heat-Auto-Cool" switch and fan "On-Auto" switch. Subbase DELUXE AUTOMATIC CHANGEOVER THERMOSTAT & SUBBASE WITH NIGHT SETBACK AND OVERRIDE. Honeywell T874/Q674. LED Thermostat for "Service." Mounts horizontal. Requires grounding of unit "U" terminal. Night setback bulb set 12 o F below day heat setpoint. System "Off-Auto" Subbase switch and fan "On-Auto-Override" switch. STANDARD AUTOMATIC CHANGEOVER THERMOSTAT & SUBBASE Thermostat FOR OPERATING TWO UNITS. Honeywell T874/Q674. LED for "Ser- Subbase vice." Mounts horizontal. System "Off-Auto" switch PROGRAMMABLE MICROELECTRONIC THERMOSTAT. Auto or manual changeover. Mounts horizontal. System "Off-Auto" switch, temp. "Heat-Auto-Cool" switch and fan "On-Auto" switch. PROGRAMMABLE MICROELECTRONIC THERMOSTAT WITH REMOTE SENSOR. "Heat-Auto-Cool" switch and fan "On-Auto" switch. Honeywell T862. * Replaces (Digistat HP-2000DC) and (Digistat HP-1000 DC) Thermostat. Part Number * (Includes subbase) (Includes subbase) ** Deluxe Thermostat was (T874D1686) which has been phased out. When replacing with , must also replace the Subbase from to Thermostat is not compatible with (Q674C-1298) Subbase. WSHP; FCV,FCG,FCW 036, 042 Vintage A Rev. D 08/17 RPL / Page 5

6 Field Installed Accessories Thermostat Accessories NIGHT SETBACK THERMOSTAT. Honeywell T822. Mounts vertically. No LED. No switches. For applications requiring a separate NSB stat. UNIVERSAL THERMOSTAT GUARD. Honeywell TG500A. Clear plastic with ring base, lock and keys. DELUXE LOCKING COVER FOR T874/Q674 THERMOSTATS. Honeywell TG504A. Applies only to T874/Q674 thermostats. Replaces standard thermostat cover. Includes cover, lock and keys. ADAPTER PLATE FOR T874/Q674 THERMOSTATS. Allows for horizontal thermostat to be mounted on a vertical junction box 7-DAY TIME CLOCK. OVERRIDE TIMER - 1 HOUR. OVERRIDE TIMER - 6 HOUR. Part Number ETA Hoses & Valves Part Number STANDARD SUPPLY OR RETURN HOSE. Rubber hose with MPT 2' long, 3/4" I.D swivel hydraulic fittings on each end. Order two per unit. 3' long, 3/4" I.D FIRE RATED SUPPLY OR RETURN HOSE. Stainless steel, braided 2' long, 3/4" I.D hose with one MPT and one MPT swivel fitting. Order 2 per unit. 3' long. 3/4" I.D CONDENSATE HOSE ASSEMBLY. Requires trap by others. Order Clear plastic, 38" long one per unit. Fire rated, 24" long Includes fitting to be soldered on unit. Fire rated, 36" long BALL VALVE. Combination shutoff and balancing valve with memory 3/4" FPT stop. Order two per unit. Filters & Filter Components Part Number 2" THICK THROWAWAY FILTER. Fits into 2" thick filter rack. Must order in multiples of " THICK THROWAWAY FILTER. Replacement for standard filter. Must order in multiples of " THICK CLEANABLE FILTER. Must order in multiples of " THICK PLEATED FILTER, 35% EFFICIENT. Must order in multiples of RETURN AIR DUCT COLLAR & TWO INCH FILTER RACK WSHP; FCV,FCG,FCW 036, 042 Vintage A Rev. D 08/17 RPL / Page 6

7 Field Installed Accessories Unit Accessories SHUTDOWN RELAY KIT FOR ELECTROMECHANICAL CONTROL UNITS. For shutdown of the unit from an external 24 volt AC power source. Relay mounts at control box. NIGHT SETBACK RELAY KIT FOR ELECTROMECHANICAL UNITS. Relay to put unit into NSB mode from an external 24 volt AC power source. Relay mounts at control box. Operation requires ACO stat with built-in NSB or a separate NSB stat. NIGHT SETBACK/DEMAND CONTROL RELAY KIT - ELECTROMECHANICAL UNITS. Relay to put unit into NSB mode from one 24 volt AC power source and to put unit into load shed mode from another 24 volt AC power source (3 total wires required). Relay mounts at control box, operation requires ACO stat with built-in NSB or separate NSB stat. RANDOM START RELAY - ELECTROMECHANICAL CONTROL. 115, 208/230, 265V UNITS. Time delay relay to delay compressor startup when coming off night operation and to not allow all units to start at the same time. 460, 575V AUXILIARY RELAY. 24 volt DC relay to be wired to low voltage terminal block to allow a set of SPDT pilot duty contacts to operate miscellaneous devices when the fan or compressor operate. BOILERLESS SYSTEM KIT. Must be Mark IV control unit. Includes electronics and sensor to lock out compressor operation at 50 o F to 60 o F EWT and provide SPNO contacts to a field supplied electric heater control system. LOGIC LINK II. Must be Mark IV control unit. Includes electronics, ACO stat and subbase for adjustable night setback and setup and compressor only shutdown (demand control/load shed) from a 24 volt AC external power source. Also includes 1 hour override control at the thermostat. LOGIC LINK II WITH BOILERLESS SYSTEM. Incorporates both Logic Link and Boilerless System control in one package. Includes ACO stat and subbase, and EWT sensor. Requires 24 volt AC external power source. MULTIPLE UNIT CONTROL PANEL. Allows master unit to be Master & 1 Slave controlled by any thermostat. Slave units "follow" with paralleled Master & 3 Slaves Kit operation. Not recommended with Boilerless System. MOTORIZED VALVE. Includes prewired valve/operator, 3 foot conduit assembly with leads and quick connects. Valve shuts water 3/4" FPT flow off for variable pumping. 300 psig maximum operating pressure. Requires control relay. See below. CONTROL RELAY FOR MOTORIZED VALVE. Part Number (NLA) (NLA) INTERFACE KIT. For other electronic or DDC controliers. Heat, Cool & Fan Ctrl Heat, Cool & Fan Ctrl & Fault Relay NLA = Part Numbers & are no longer available as a kit. Individual parts may be available. WSHP; FCV,FCG,FCW 036, 042 Vintage A Rev. D 08/17 RPL / Page 7

8 Refrigeration Circuit Diagram TO WATER REGULATING VALVE (OPTION) WSHP; FCV,FCG,FCW 036, 042 Vintage A Rev. D 08/17 RPL / Page 8

9 Refrigeration Circuit Components Bub. Num. Part Number 265/60/1 1 Compressor Compressor Compressor Compressor Compressor Compressor Compressor Compressor Compressor Compressor Compressor Compressor Compressor Compressor * 1 1 Compressor Compressor N/S Plug, Threaded 1/2" N/S Capacitor, Compr. 40 Mfd, 370V N/S Capacitor, Compr. 35 Mfd, 440V N/S Bracket, Capacitor Coaxial Coil* Copper Coaxial Coil* Cupronickel Coaxial Coil* Copper Coaxial Coil* Cupronickel Fin Tubular Coil** Fin Tubular Coil** Capillary 33 X.059 X Capillary 25 X.054 X Strainer / Distributor Strainer / Distributor N/S = Not shown on diagram 2 FCV, FCG only. 3 FCW only. * = Water to Refrigerant ** = Air to Refrigerant Continued on next page. WSHP; FCV,FCG,FCW 036, 042 Vintage A Rev. D 08/17 RPL / Page 9

10 Refrigeration Circuit Components Bub. Num. Part Number 265/60/1 6 Reversing Valve Solenoid, Reversing Valve 1 24V Switch, High Pressure Thermostat, Low Temp. Cutout Accumulator Accumulator N/S Flanged Nut, Compressor Mounting N/S Grommet, Compressor Mounting N/S Sleeve, Compressor Grommet N/S Sleeve, Compressor Grommet N/S Spacer, Lower, Compressor Mtg N/S Spacer, Top, Compressor Mtg N/S Spring, Compressor Mounting N/S Water Regulating Valve 2, N/S Water Regulating Valve 3, N/S Drain Pan N/S = Not shown on diagram 1 FCV, FCW only. 2 FCV, FCG only. 3 FCW, only. 6 Used only on Standard Construction units. 7 Used on all Extra Quiet Construction units. 15 Only used on units with Water Regulating Valve option. WSHP; FCV,FCG,FCW 036, 042 Vintage A Rev. D 08/17 RPL / Page 10

11 Fan and Housing Assembly Cabinet/Chassis Components Bub. Num. Part Number 265/60/1 15 Motor 1/2 HP Motor 1/2 HP Motor 1/2 HP Motor 1/2 HP Motor 1/3 HP Motor 1/3 HP Motor 1/3 HP N/S Kit, Motor Mount Run Capacitor, Motor (7.5 MFD, 440V) Run Capacitor, Motor (7.5 MFD, 440V) Bracket, Capacitor Blower Housing Weldment Blower Housing Weldment Inlet Ring Inlet Ring Wheel Blower Wheel Blower Protector Terminal N/S Cabinet/Chassis components 1 N/S = Not shown on diagram. 1 Contact Daikin with unit model and serial number for part numbers on Sheet Metal components. WSHP; FCV,FCG,FCW 036, 042 Vintage A Rev. D 08/17 RPL / Page 11

12 Control Box Standard Control Layout 50HZ TERMINAL BLOCK & BRACKET WSHP; FCV,FCG,FCW 036, 042 Vintage A Rev. D 08/17 RPL / Page 12

13 Control Box Layout - MicroTech Control MicroTech Control Layout WSHP; FCV,FCG,FCW 036, 042 Vintage A Rev. D 08/17 RPL / Page 13

14 Control Box Components Bub. Num. Part Number 265/60/1 22 Barrier, Control Box Barrier, Control Box * Circuit Board, Mark-IV, DC K Circuit Board, Electromechanical K Circuit Board, Microtech* N/S Sensor Assembly, Temperature * Block, Terminal, 3-Pole * Block, Terminal, 4-Pole * Block, Terminal, 5-Pole * Panel, Mounting, PC Board Panel, Mounting, PC Board * Stand-Off * Stand-Off Stand-Off Nylon Nut * Nylon Nut Nylon Nut Control Box Screw, Tapping N/S Washer, Cupped N/S Condensate Overflow Wire *, Contactor, Compressor 25A Contactor, Compressor * 25A Contactor, Compressor 20A Contactor, Compressor 25A Contactor, Compressor * 20A Contactor, Compressor 30A N/S = Not shown on diagram * MicroTech Control units only. (Units with Model No. Digit 8 = C). 8 Mark IV Control units only. (Units with Model No. Digit 8 = M). 9 Electromechanical Control units only. (Units with Model No. Digit 8 = E). Continued on next page. WSHP; FCV,FCG,FCW 036, 042 Vintage A Rev. D 08/17 RPL / Page 14

15 Control Box Components Bub. Num. Part Number 265/60/1 33 Relay, Fan * 24VAC Relay, Fan 24V SPDT Relay, Fan 24V Bracket, Control Option Mtg Bracket, Control Option Mtg Relay, Random Start 9, Relay, Random Start 9, Relay, Shutdown 9,11 24V Relay, Night Setback 9,12 RK Relay, Demand Control, Bd Galt 9, Relay, Auxiliary 14 24V BD Relay, Timed Output * 24V Relay, Boilerless System * 24V Relay, Fresh Air Damper * 24V Relay, Motorized Valve * 24V N/S Suppressor / Diode Ass'y. * Mount, Terminal Block Terminal Block End, Terminal Block Terminal Lug Transformer 208/230V - 24V Transformer 277V, 24V Transformer 480V, 24V Transformer * 24V N/S Condensate Overflow Switch N/S Condensate Overflow Wire *, N/S = Not shown on diagram * MicroTech Control units only. (Units with Model No. Digit 8 = C). 8 Mark IV Control units only. (Units with Model No. Digit 8 = M). 9 Electromechanical Control units only. (Units with Model No. Digit 8 = E). 10 Only on units with Random Start Relay Option. 11 Only on units with Shutdown Relay Option. 12 Only on units with Night Setback Option. 13 Only on units with Demand Control Relay Option. 14 Only on units with Auxiliary Relay Option and without MicroTech Controller. WSHP; FCV,FCG,FCW 036, 042 Vintage A Rev. D 08/17 RPL / Page 15

16 Critical Daikin Applied OEM Parts Are What Your HVAC Unit Needs! McQuay Vertical WSHP FCV, FCG, FCW 036, 042 Vintage A Critical Components Unit Sizes Voltage Part Number Control Control Board, Electromechanical ALL ALL K Control Board, Mark-IV, DC ALL ALL K Control Board, MicroTech ALL ALL Compressor Compressor / Compressor / Compressor /60/ Compressor Compressor Compressor / Compressor / Compressor Compressor Compressor (FCW only) / Compressor (FCW only) / Compressor (FCW only) /60/ Compressor (FCW only) Compressor (FCW only) Compressor (FCW only) / Compressor (FCW only) / Compressor (FCW only) Compressor (FCW only) Blower Motor Motor, 1/2HP // Motor, 1/2HP /60/ Motor, 1/2HP Motor, 1/2HP Motor, 1/3HP // Motor, 1/3HP Motor, 1/3HP Fan Housing and Wheel Blower Housing 036 N/A Blower Housing 042 N/A Wheel, Blower 036 N/A Wheel, Blower 042 N/A Sensor Sensor, Temperature Assy ALL N/A Call Your Local Daikin Applied Parts Distributor For All Your Parts Needs. To Locate A Distributor, Go To or Call PARTS Rev. D 08/2017 CPL Page 1 of 1