Carrier WeatherMaster 50HCQ04-12 Service And Maintenance Instructions
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Carrier WeatherMaster 50HCQ04-12 Service And Maintenance Instructions

Single package rooftop heat pump/electric heat with puron (r-410a) refrigerant
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Service and Maintenance Instructions
CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 2
UNIT ARRANGEMENT AND ACCESS . . . . . . . . . . . . . . 3
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Routine Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Seasonal Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
RETURN AIR FILTERS. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Removing the Return Air Filters . . . . . . . . . . . . . . . . . . . 4
Re-installing the Access Panel . . . . . . . . . . . . . . . . . . . . 4
Outside Air Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Economizer Inlet Air Screen . . . . . . . . . . . . . . . . . . . . . . 4
Manual Outside Air Hood Screen . . . . . . . . . . . . . . . . . . 4
SUPPLY FAN (BLOWER) SECTION . . . . . . . . . . . . . . . . 5
Supply Fan (Direct-Drive) . . . . . . . . . . . . . . . . . . . . . . . . . 5
ECM Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Supply Fan (Belt-Drive) . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Variable Frequency Drive (VFD) . . . . . . . . . . . . . . . . . . . 7
Belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Adjustable-Pitch Pulley on Motor. . . . . . . . . . . . . . . . . . 7
Changing the Fan Speed . . . . . . . . . . . . . . . . . . . . . . . . . 8
Aligning Blower and Motor Pulleys . . . . . . . . . . . . . . . . 8
Bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
MOTOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
HEAT PUMP REFRIGERATION SYSTEM . . . . . . . . . . . 8
Outdoor Coil. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Indoor Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
and Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Indoor Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Refrigeration System Components . . . . . . . . . . . . . . . 10
Problems and Check Valves . . . . . . . . . . . . . . . . . . . 10
(R-410A) REFRIGERANT . . . . . . . . . . . . . . . . 11
®
Refrigerant Charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
TXV Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Replacing TXV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
COOLING CHARGING CHARTS . . . . . . . . . . . . . . . . . . 14
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53500234-01
Single Package Rooftop Heat Pump/Electric Heat
Printed in U.S.A.
Form 50HCQ-4-12-02SM Rev. A
with Puron
Page
How To Use Cooling Charging Charts . . . . . . . . . . . . 14
COMPRESSOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Replacing Compressor . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Compressor Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Filter Drier. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Outdoor Fan Location . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Troubleshooting Cooling System . . . . . . . . . . . . . . . . 17
CONVENIENCE OUTLETS . . . . . . . . . . . . . . . . . . . . . . . 19
Non-Powered Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Unit-Powered Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Installing Weatherproof Cover . . . . . . . . . . . . . . . . . . . 19
Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Fuse on Powered Type . . . . . . . . . . . . . . . . . . . . . . . . . . 20
HEAT PUMP CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . 20
Central Terminal Board. . . . . . . . . . . . . . . . . . . . . . . . . . 20
PROTECTIVE CONTROLS . . . . . . . . . . . . . . . . . . . . . . . 20
Compressor Protection . . . . . . . . . . . . . . . . . . . . . . . . . 20
Supply (Indoor) Fan Motor Protection . . . . . . . . . . . . 21
Outdoor Fan Motor Protection . . . . . . . . . . . . . . . . . . . 21
COMMERCIAL DEFROST CONTROL . . . . . . . . . . . . . 21
Reversing Valve Control. . . . . . . . . . . . . . . . . . . . . . . . . 21
Compressor Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Auxiliary (Electric) Heat control . . . . . . . . . . . . . . . . . . 22
Defrost. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Defrost Thermostats . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Indoor Fan Off Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Defrost Speedup Functions. . . . . . . . . . . . . . . . . . . . . . 23
ELECTRIC HEATERS. . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Safety Devices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Completing Heater Installation . . . . . . . . . . . . . . . . . . . 25
SMOKE DETECTORS . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Smoke Detector Sensor . . . . . . . . . . . . . . . . . . . . . . . . . 26
Smoke Detector Locations . . . . . . . . . . . . . . . . . . . . . . 27
Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Pg 1
WeatherMaster
50HCQ04-12
®
(R-410A) Refrigerant
10-19
Replaces: 50HCQ-4-12-01SM
®
Page

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Summary of Contents for Carrier WeatherMaster 50HCQ04-12

  • Page 1: Table Of Contents

    ® WeatherMaster 50HCQ04-12 Single Package Rooftop Heat Pump/Electric Heat with Puron ® (R-410A) Refrigerant Service and Maintenance Instructions CONTENTS Page Page How To Use Cooling Charging Charts ... . 14 SAFETY CONSIDERATIONS .

  • Page 2: Safety Considerations

    CONTENTS (CONT) SAFETY CONSIDERATIONS Page Improper installation, adjustment, alteration, service, maintenance, or use can cause explosion, fire, electrical shock FIOP Smoke Detector Wiring and Response ..29 or other conditions which may cause personal injury or SENSOR AND CONTROLLER TESTS.

  • Page 3: Unit Arrangement And Access

    UNIT ARRANGEMENT AND ACCESS WARNING General FIRE, EXPLOSION HAZARD Fig. 1 and Fig. 2 show general unit arrangement and access locations. Failure to follow this warning could result in serious personal injury, death, and/or property damage. Disconnect gas piping from unit when leak testing at pressure greater than 0.5 psig (3450 Pa).

  • Page 4: Seasonal Maintenance

    Seasonal Maintenance Outside Air Hood Outside air hood inlet screens are permanent aluminum-mesh These items should be checked at the beginning of each season type filters. Check these for cleanliness. Remove the screens (or more often if local conditions and usage patterns dictate): when cleaning is required.

  • Page 5: Supply Fan (Blower) Section

    Re-install the Manual Outside Air Hood Screen by placing the ECM Motor screen frame in its track, rotating the retainer back down. The direct-drive motor is an X13 Electronically Commutated Tighten all screws.. Motor (ECM). An ECM motor contains electronic circuitry used to convert single-phase line AC voltage into 3-phase DC voltage to power the motor circuit.

  • Page 6: Supply Fan (Belt-Drive)

    208/230, 460-v Units 575-v Units Fig. 7 — ECM Unit Wiring TROUBLESHOOTING THE ECM MOTOR REPLACING THE X-13 ECM MOTOR Troubleshooting the X13 ECM requires a voltmeter. Before removing the ECM belly-band mounting ring from old motor: Disconnect main power to the unit. Measure the distance from base of the motor shaft to the Remove the motor power plug (including the control BRN edge of the mounting ring.

  • Page 7: Variable Frequency Drive (Vfd)

    BLOWER PULLEY CAUTION V--- BELT EQUIPMENT DAMAGE HAZARD Failure to follow this CAUTION can result in premature MOTOR wear and damage to equipment. PULLEY Do not use a screwdriver or a pry bar to place the new V- belt in the pulley groove. This can cause stress on the V-belt and the pulley resulting in premature wear on the V-belt MOTOR and damage to the pulley.

  • Page 8: Changing The Fan Speed

    firm that the motor in this unit is capable of operating at the Changing the Fan Speed new operating condition. Fan shaft loading increases dramati- Shut off unit power supply. Use proper lockout/tagout pro- cally as wheel speed is increased. cedures.
  • Page 9 ROUTINE CLEANING OF INDOOR COIL SURFACES For Sizes 04-06: Remove screws securing coil to compres- sor plate and compressor access panel. Periodic cleaning with Totaline environmentally sound coil ® For Sizes 07-12: Remove fastener holding coil sections cleaner is essential to extend the life of coils. This cleaner is together at return end of condenser coil.

  • Page 10: Indoor Coil

    Refrigeration System Components Each heat pump refrigeration system includes a compressor, CAUTION accumulator, reversing valve, dual-function outdoor coil with UNIT DAMAGE HAZARD vapor header check valve, cooling liquid line with a filter drier Failure to follow this caution may result in accelerated cor- and a check valve, dual-function indoor coil with a vapor head- rosion of unit parts.

  • Page 11: Puron ® (R-410A) Refrigerant

    The amount of refrigerant charge is listed on the unit’s name- feature. For a cylinder with a dip tube, place the cylinder in the plate. Refer to Carrier GTAC2-5 Charging, Recovery, Recy- upright position (access valve at the top) when removing liquid cling and Reclamation training manual and the following pro- refrigerant for charging.

  • Page 12: Thermostatic Expansion Valve (Txv)

    See Fig. 19. The needle valve on the pin carrier is spring loaded, exert- Route equalizer tube through suction connection opening ing pressure on the underside of the diaphragm. Therefore,...
  • Page 13 CAPILLARY TUBE DIAPHRAGM PUSHRODS FEEDER TUBES INLET COIL OUTLET NEEDLE VALVE SPRING DISTRIBUTOR BULB EXTERNAL EQUALIZER TUBE Fig. 17 — Thermostatic Expansion Valve (TXV) Operation CHECK VALVE CLOSED CHECK VALVE OPEN Fig. 18 — Thermostatic Expansion Valve (TXV) with Bypass...

  • Page 14: Cooling Charging Charts

    COOLING CHARGING CHARTS THERMAL EXPANSION (TXV) VALVE CLAMP TXV SENSING BULB SENSING BULB INSULATION REMOVED FOR CLARITY Fig. 20 — Cooling Charging Chart — 50HCQA04 Fig. 19 — TXV Valve and Sensing Bulb COOLING CHARGING CHARTS How To Use Cooling Charging Charts Take the outdoor ambient temperature and read the suction pressure gauge.
  • Page 15 2-Stage 6 Ton Heat Pump Charging Chart R410A Refrigerant (Cooling Mode - Compressor at Full Load and Outdoor Fans at High Speed) Add Charge if Above the Curve Remove Charge if Below the Curve 1050 1400 1750 2100 2450 2800 3150 3500 3850 Compressor Discharge Pressure (PSIG / Kpa) Fig.

  • Page 16: Compressor

    Fig. 28 — Cooling Charging Chart — 50HCQD12 Circuit B Fig. 26 — Cooling Charging Chart — 50HCQD09 COMPRESSOR Lubrication The compressor is charged with the correct amount of oil at the factory. CAUTION INSTALLATION SITE DAMAGE Failure to follow this caution can result in damage to equip- ment location site.

  • Page 17: Compressor Rotation

    The suction and discharge pressure levels should now move to their normal start-up levels. WARNING Filter Drier FIRE, EXPLOSION HAZARD Replace the Filter Drier whenever refrigerant system is exposed to atmosphere. Only use factory specified liquid-line filter driers Failure to follow this warning could result in death, serious with working pressures no less than 650 psig (4482 kPa).
  • Page 18 Table 6 — Troubleshooting SYMPTOM CAUSE SOLUTION Power failure. Call power company. Fuse blown or circuit breaker tripped. Replace fuse or reset circuit breaker. Determine root cause. Defective thermostat, contactor, transformer. Replacement component. control relay, or capacitor. Insufficient line voltage. Determine cause and correct.

  • Page 19: Convenience Outlets

    CONVENIENCE OUTLETS WARNING ELECTRICAL OPERATION HAZARD Failure to follow this warning could result in personal inju- ry or death. Units with convenience outlet circuits may use multiple disconnects. Check convenience outlet for power status before opening unit for service. Locate its disconnect switch, if appropriate, and open it.

  • Page 20: Maintenance

    Remove two slot fillers in the bottom of the cover to per- mit service tool cords to exit the cover. CUT FOR Check cover installation for full closing and latching. CUT FOR REHEAT/HP REHEAT/HP GFCI RECEPTACLE NOT INCLUDED COVER - WHILE-IN-USE FOR PMR WEATHERPROOF CUT FOR...

  • Page 21: Supply (Indoor) Fan Motor Protection

    HIGH PRESSURE SWITCH COMMERCIAL DEFROST CONTROL The system is provided with a high pressure switch mounted on The Commercial Defrost Control Board (DFB) coordinates ther- the discharge line. The switch is stem-mounted and brazed into the mostat demands for supply fan control, 1 or 2 stage cooling, 2 discharge tube.

  • Page 22: Auxiliary (Electric) Heat Control

    Fig. 35 — Defrost Control Board Location Table 8 — 50HCQ Defrost Board I/O and Jumper Configurations UNIT POINT NAME TYPE OF I/O CONNECTION PIN NUMBER NOTE CONNECTION G Fan DI, 24Vac P2-3 LCTB-G Y1 Cool 1 DI, 24Vac P2-5 LCTB-Y1 Y2 Cool 2 DI, 24Vac...

  • Page 23: Defrost Thermostats

    At the end of the continuous run period, the defrost control will Defrost Thermostats test for a need to defrost. On unit sizes 04-07 (single compres- These are temperature switches that monitor the surface tem- sor designs), DFT1 controls the start and termination of the de- perature of the outdoor coil circuits.

  • Page 24: Electric Heaters

    NOTE: The value in position 9 of the part number differs between ELECTRIC HEATERS the sales package part number (value is 1) and a bare heater model The 50HCQ units can be equipped with field-installed accesso- number (value is 0). ry electric heaters.

  • Page 25: Single Point Boxes And Supplementary Fuses

    without fuses, connect the field power supply conductors to the Single Point Boxes and Supplementary Fuses heater power leads and the field-supplied tap conductors inside When the unit MOCP device value exceeds 60A, unit-mounted the Single Point Box. Use UL approved pressure connectors supplementary fuses are required for each heater circuit.

  • Page 26: Smoke Detectors

    The 50HCQ units use a various number of control wires, col- TRAN1 FROM POWER SCHEMATIC ors, and terminal boards depending on voltage and unit size. GRN/ See Fig. 43-46 and the unit wiring diagram for proper place- 3.2 AMPS TRAN2 FROM POWER SCHEMATIC ment.

  • Page 27: Smoke Detector Locations

    the sensor housing using four captive screws and forms an air- tight chamber around the sensing electronics. Each sensor in- cludes a harness with an RJ45 terminal for connecting to the controller. Each sensor has four LEDs (for Power, Trouble, Alarm and Dirty) and a manual test/reset button (on the left- side of the housing).

  • Page 28: Completing Installation Of Return Air Smoke

    FLEXIBLE EXHAUST RETURN AIR TUBES DETECTOR MODULE (Shipping position shown)* CONTROLLER MODULE SCREWS RETURN AIR DETECTOR SAMPLING TUBE *RA detector must be moved from shipping position to operating position by installer. SAMPLE TUBE Fig. 50 — Typical Return Air Smoke Detector Location RETURN AIR SMOKE DETECTOR SENSOR WITH ECONOMIZER...

  • Page 29: Fiop Smoke Detector Wiring And Response

    HIGHLIGHT E FIOP Smoke Detector Wiring and Response GRA lead at Smoke Alarm input on LCTB provides 24-v sig- ALL UNITS nal to FIOP DDC control. FIOP smoke detector is configured to automatically shut down PREMIERLINK all unit operations when a smoke condition is detected. See Fig.

  • Page 30: Sensor And Controller Tests

    SENSOR AND CONTROLLER TESTS Dirty Sensor Test The dirty sensor test provides an indication of the sensor’s abil- Sensor Alarm Test ity to compensate for gradual environmental changes. A sensor The sensor alarm test checks a sensor’s ability to signal an that can no longer compensate for environmental changes is alarm state.

  • Page 31: Remote Station Test

    Remote Station Test The remote station alarm test checks a test/reset station’s abili- ty to initiate and indicate an alarm state. SMOKE DETECTOR CONTROLLER NOTICE − AUXILIARY OPERATIONAL TEST ALERT EQUIPMENT Failure to follow this ALERT can result in an unnecessary evacuation of the facility.

  • Page 32: Indicators

    • If a sensor trouble, the sensor’s Trouble LED the control- ler’s Trouble LED turn on. • If 100% dirty, the sensor’s Dirty LED turns on and the HVAC DUCT SAMPLING controller’s Trouble LED flashes continuously. TUBE SENSOR • If a wiring fault between a sensor and the controller, the HOUSING controller’s Trouble LED turns on but not the sensor’s.

  • Page 33: Premierlink™ Controller

    The RTU Open controller is an integrated component of the operational. If not, make sure JP2 and JP3 are set correctly Carrier rooftop unit. Its internal application programming pro- on the controller before applying power. vides optimum performance and energy efficiency. RTU Open Verify that power is applied to the controller’s supply...

  • Page 34: Additional Rtu Open Installation

    Fig. 58 — PremierLink™ Controller WARNING Electrical shock can cause personal injury and death. Shut off all power to this equipment during installation. There may be more than one disconnect switch. Tag all disconnect locations to alert others not to restore power until work is completed. Additional RTU Open Installation and Trouble- shooting Refer to the following manuals: “Controls, Start-up, Operation...
  • Page 35 Board Power (AO-1) DO-6 (Dehumidification) DO-7 (Reversing Valve) DO-8 (Power Exhaust) SPT (temp Input) Protocol Selector *Remove BACnet, Modbus, or N2 both for 0-5V SPT (common) (LON connection J15) SPT (offset input) Fig. 59 — RTU Open Control Module...

  • Page 36: Pre-Start-Up/Start-Up

    tight. Be sure that wires are not in contact with refrig- PRE-START-UP/START-UP erant tubing or sharp edges. d. Inspect coil fins. If damaged during shipping and han- WARNING dling, carefully straighten fins with a fin comb. Verify the following conditions: PERSONAL INJURY HAZARD a.

  • Page 37: Compressor Rotation

    If the suction pressure does not drop and the discharge pressure Use the Carrier network communication software to start up does not rise to normal levels: and configure the PremierLink controller.

  • Page 38: Start-Up, Rtu Open Controls

    START-UP, RTU OPEN CONTROLS NOTICE SET-UP INSTRUCTIONS Installation, wiring and troubleshooting information for the RTU-OPEN Controller: “Controls, Start-up, Operation and Troubleshooting Instructions,” “RTU Open Installation and Start-up Guide” and “RTU-Open Integration Guide”. Have a copy of these manuals available at unit start-up. FASTENER TORQUE VALUES Refer to Table 13.

  • Page 39: Appendix A - Model Number Nomenclature

    APPENDIX A — MODEL NUMBER NOMENCLATURE Position: 9 10 11 12 13 14 15 16 17 18 – Example: ® Series - WeatherMaster Factory Assigned 50HC - Packaged Rooftop - 0 = Standard High Efficiency 1 = LTL Q = Heat Pump Electrical Options A = None C = Non-Fused Disconnect...

  • Page 40: Appendix B - Physical Data

    APPENDIX B — PHYSICAL DATA Table A — Physical Data (Cooling) 3-6 Tons 50HCQA04 50HCQA05 50HCQA06 50HCQA07 50HCQD07 REFRIGERATION SYSTEM 1 / 1 / 1 / 1 / 1 / 1 / # Circuits / # Comp. / Type 1 / 1 / Scroll 1 / 1 / Scroll 1-Stage Scroll 1-Stage Scroll...
  • Page 41 APPENDIX B — PHYSICAL DATA (cont) Table B — Physical Data (Cooling) — 7.5-10 Tons 50HCQD08 50HCQD09 50HCQD12 REFRIGERATION SYSTEM # Circuits / # Comp. / Type 2 / 2 / Scroll 2 / 2 / Scroll 2 / 2 / Scroll Puron ®...

  • Page 42: Appendix C - Fan Performance

    The Fan Performance tables offer motor/drive recommen- dations. In cases when two motor/drive combinations would work, Carrier recommended the lower horsepower option. For information on the electrical properties of Carrier’s motors, please see the Electrical information section of this book.
  • Page 43 APPENDIX C — FAN PERFORMANCE (cont) Table C — 50HCQA04 3 Ton Horizontal Unit Direct Table D — 50HCQA04 3 Ton Vertical Unit Direct Drive Drive Speed (Torque) Speed (Torque) 0.44 0.19 0.57 0.25 0.34 0.18 0.47 0.24 1050 0.24 0.17 1050 0.37...
  • Page 44 APPENDIX C — FAN PERFORMANCE (cont) Table E — 50HCQA05 4 Ton Horizontal Unit Direct Table F — 50HCQA05 4 Ton Vertical Unit Direct Drive Drive Speed (Torque) Speed (Torque) 1200 0.87 0.43 1200 0.93 0.48 1300 0.73 0.41 1300 0.80 0.46 1400...
  • Page 45 APPENDIX C — FAN PERFORMANCE (cont) Table G — 50HCQA06 5 Ton Horizontal Unit Direct Table H — 50HCQA06 5 Ton Vertical Unit Direct Drive Drive Speed (Torque) Speed (Torque) 1500 0.27 0.32 1500 1.37 0.74 1625 0.13 0.30 1625 1.22 0.73 1750...
  • Page 46 APPENDIX C — FAN PERFORMANCE (cont) Table I — 50HCQA04 3 Ton Horizontal Supply Available External Static Pressure (in. wg) RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 0.13 0.23 0.34 913 0.47 999 0.61 1078 0.77 1151 0.93...
  • Page 47 APPENDIX C — FAN PERFORMANCE (cont) Table K — 50HCQA05 4 Ton Horizontal Supply Available External Static Pressure (in. wg) RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 1200 0.20 0.31 859 0.43 949 0.56 1030 0.70 1104 0.84 1173 0.99...
  • Page 48 APPENDIX C — FAN PERFORMANCE (cont) Table M — 50HCQA06 5 Ton Horizontal Supply Available External Static Pressure (in. wg) RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 1500 0.33 840 0.46 937 0.60 1023 0.75 1101 0.90 1172 1.06 1239 1.23...
  • Page 49 APPENDIX C — FAN PERFORMANCE (cont) Table O — 50HCQA/D07 6 Ton Horizontal Supply Available External Static Pressure (in. wg) RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 1800 0.28 0.46 0.65 0.85 1.08 1.31...
  • Page 50 APPENDIX C — FAN PERFORMANCE (cont) Table Q — 50HCQD08 7.5 Ton Horizontal Supply Available External Static Pressure (in. wg) RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 2250 0.29 0.41 0.54 0.67 0.81 0.96...
  • Page 51 APPENDIX C — FAN PERFORMANCE (cont) Table S — 50HCQD09 8.5 Ton Horizontal Supply Available External Static Pressure (in. wg) RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 2550 0.39 0.52 0.66 0.80 0.96 1.11...
  • Page 52 APPENDIX C — FAN PERFORMANCE (cont) Table U — 50HCQD12 10 Ton Horizontal Supply Available External Static Pressure (in. wg) RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 3000 0.32 0.51 0.74 1.00 1.29 1.59...
  • Page 53 APPENDIX C — FAN PERFORMANCE (cont) Table W — Pulley Adjustment - Belt Drive MOTOR PULLEY TURNS OPEN UNIT MOTOR/DRIVE COMBO Medium Static 1251 1208 1165 1121 1078 1035 3 phase High Static 1466 1423 1380 1337 1294 1251 1207 1164 1121 1078...

  • Page 54: Appendix D - Electrical Information

    APPENDIX D — ELECTRICAL INFORMATION Table X — 50HCQA04 Single Stage Cooling with Single Speed Indoor Fan Motor VOLTAGE RANGE COMP (ea) OFM (ea) V-Ph-Hz EFF at WATTS TYPE Full Load 208-1-60 16.6 DD-STD 230-1-60 16.6 DD-STD DD-STD 208-3-60 10.4 HIGH DD-STD 230-3-60...
  • Page 55 APPENDIX D — ELECTRICAL INFORMATION (cont) Table AA — 50HCQA07 Single Stage Cooling with Single Speed Indoor Fan Motor (Units Produced On or After 02/16/2015) VOLTAGE RANGE COMP (ea) OFM (ea) V-Ph-Hz WATTS TYPE EFF at Full Load 230-3-60 19.6 HIGH 13.6 230-3-60...
  • Page 56 APPENDIX D — ELECTRICAL INFORMATION (cont) Table AD — 50HCQD08 2-Stage Cooling with Single Speed Indoor Fan Motor VOLTAGE RANGE COMP (Cir 1) COMP (Cir 2) OFM (ea) V-Ph-Hz WATTS TYPE EFF at Full Load 208-3-60 13.1 13.1 HIGH 10.6 230-3-60 13.1 13.1...
  • Page 57 APPENDIX D — ELECTRICAL INFORMATION (cont) Table AH — 50HCQD12 2-Stage Cooling with Single Speed Indoor Fan Motor COMP COMP VOLTAGE RANGE (Cir 1) (Cir 2) (ea) V-Ph-Hz WATTS TYPE EFF at Full Load 208-3-60 15.6 15.9 HIGH 89.5% 17.0 230-3-60 15.6 15.9...
  • Page 58 APPENDIX D — ELECTRICAL INFORMATION (cont) Legend and Notes Applicable for Electrical Data Tables AJ-AU LEGEND max voltage deviation from average voltage % Voltage Imbalance = 100 x BRKR — Circuit breaker average voltage C.O. — Convenience outlet DISC — Disconnect Example: Supply voltage is 230-3-60 —...
  • Page 59 APPENDIX D — ELECTRICAL INFORMATION (cont) Table AJ — 50HCQA04 Unit Wire/Fuse or HACR Breaker Sizing Data Single Stage Cooling with Single Speed Indoor Fan Motor NO C.O. or UNPWR C.O. ELEC. HTR NO P .E. WITH P.E. (pwrd fr/ unit) NOM.
  • Page 60 APPENDIX D — ELECTRICAL INFORMATION (cont) Table AJ — 50HCQA04 Unit Wire/Fuse or HACR Breaker Sizing Data Single Stage Cooling with Single Speed Indoor Fan Motor (cont) WITH PWRD C.O. ELEC. HTR NO P .E. WITH P.E. (pwrd fr/ unit) NOM.
  • Page 61 APPENDIX D — ELECTRICAL INFORMATION (cont) Table AK — 50HCQA05 Unit Wire/Fuse or HACR Breaker Sizing Data Single Stage Cooling with Single Speed Indoor Fan Motor NO C.O. or UNPWR C.O. ELEC. HTR NO P.E. WITH P.E. (pwrd fr/ unit) NOM.
  • Page 62 APPENDIX D — ELECTRICAL INFORMATION (cont) Table AK — 50HCQA05 Unit Wire/Fuse or HACR Breaker Sizing Data Single Stage Cooling with Single Speed Indoor Fan Motor (cont) WITH PWRD C.O. ELEC. HTR NO P .E. WITH P.E. (pwrd fr/ unit) NOM.
  • Page 63 APPENDIX D — ELECTRICAL INFORMATION (cont) Table AL — 50HCQA06 Unit Wire/Fuse or HACR Breaker Sizing Data Single Stage Cooling with Single Speed Indoor Fan Motor NO C.O. or UNPWR C.O. ELEC. HTR NO P .E. WITH P.E. (pwrd fr/ unit) NOM.
  • Page 64 APPENDIX D — ELECTRICAL INFORMATION (cont) Table AL — 50HCQA06 Unit Wire/Fuse or HACR Breaker Sizing Data Single Stage Cooling with Single Speed Indoor Fan Motor (cont) WITH PWRD C.O. ELEC. HTR NO P .E. WITH P.E. (pwrd fr/ unit) NOM.
  • Page 65 APPENDIX D — ELECTRICAL INFORMATION (cont) Table AM — 50HCQA07 Unit Wire/Fuse or HACR Breaker Sizing Data Single Stage Cooling with Single Speed Indoor Fan Motor NO C.O. or UNPWR C.O. ELEC. HTR NO P.E. WITH P.E. (pwrd fr/ unit) NOM.
  • Page 66 APPENDIX D — ELECTRICAL INFORMATION (cont) Table AM — 50HCQA07 Unit Wire/fuse or HACR Breaker Sizing Data Single Stage Cooling with Single Speed Indoor Fan Motor (cont) WITH PWRD C.O. ELEC. HTR NO P .E. WITH P.E. (pwrd fr/ unit) NOM.
  • Page 67 APPENDIX D — ELECTRICAL INFORMATION (cont) Table AN — 50HCQD07 Unit Wire/Fuse or HACR Breaker Sizing Data Two Stage Cooling with Single Speed Indoor Fan Motor NO C.O. or UNPWR C.O. ELEC. HTR NO P .E. WITH P.E. (pwrd fr/ unit) NOM.
  • Page 68 APPENDIX D — ELECTRICAL INFORMATION (cont) Table AN — 50HCQD07 Unit Wire/Fuse or HACR Breaker Sizing Data Two Stage Cooling with Single Speed Indoor Fan Motor (cont) WITH PWRD C.O. ELEC. HTR NO P .E. WITH P.E. (pwrd fr/ unit) NOM.
  • Page 69 APPENDIX D — ELECTRICAL INFORMATION (cont) Table AO — 50HCQD08 Unit Wire/Fuse or HACR Breaker Sizing Data Two Stage Cooling with Single Speed Indoor Fan Motor NO C.O. or UNPWR C.O. ELEC. HTR NO P .E. WITH P.E. (pwrd fr/ unit) NOM.
  • Page 70 APPENDIX D — ELECTRICAL INFORMATION (cont) Table AO — 50HCQD08 Unit Wire/Fuse or HACR Breaker Sizing Data Two Stage Cooling with Single Speed Indoor Fan Motor (cont) WITH PWRD C.O. ELEC. HTR NO P .E. WITH P.E. (pwrd fr/ unit) NOM.
  • Page 71 APPENDIX D — ELECTRICAL INFORMATION (cont) Table AP — 50HCQD09 Unit Wire/Fuse or HACR Breaker Sizing Data Two Stage Cooling with Single Speed Indoor Fan Motor NO C.O. or UNPWR C.O. ELEC. HTR NO P.E. WITH P.E. (pwrd fr/ unit) NOM.
  • Page 72 APPENDIX D — ELECTRICAL INFORMATION (cont) Table AP — 50HCQD09 Unit Wire/Fuse or HACR Breaker Sizing Data Two Stage Cooling with Single Speed Indoor Fan Motor (cont) WITH PWRD C.O. ELEC. HTR NO P .E. WITH P.E. (pwrd fr/ unit) NOM.
  • Page 73 APPENDIX D — ELECTRICAL INFORMATION (cont) Table AQ — 50HCQD12 Unit Wire/Fuse or HACR Breaker Sizing Data Two Stage Cooling with Single Speed Indoor Fan Motor NO C.O. or UNPWR C.O. ELEC. HTR NO P .E. WITH P.E. (pwrd fr/ unit) NOM.
  • Page 74 APPENDIX D — ELECTRICAL INFORMATION (cont) Table AQ — 50HCQD12 Unit Wire/Fuse or HACR Breaker Sizing Data Two Stage Cooling with Single Speed Indoor Fan Motor (cont) WITH PWRD C.O. ELEC. HTR NO P .E. WITH P.E. (pwrd fr/ unit) NOM.
  • Page 75 APPENDIX D — ELECTRICAL INFORMATION (cont) Table AQ — S50HCQD12 Unit Wire/Fuse or HACR Breaker Sizing Data Two Stage Cooling with Single Speed Indoor Fan Motor (cont) WITH PWRD C.O. ELEC. HTR NO P .E. WITH P.E. (pwrd fr/ unit) NOM.
  • Page 76 APPENDIX D — ELECTRICAL INFORMATION (cont) Table AR — 50HCQD07 Unit Wire/Fuse or HACR Breaker Sizing Data Two Stage Cooling with Two Speed Indoor Fan Motor NO C.O. or UNPWR C.O. ELEC. HTR NO P.E. WITH P.E. (pwrd fr/ unit) NOM.
  • Page 77 APPENDIX D — ELECTRICAL INFORMATION (cont) Table AR — 50HCQD07 Unit Wire/Fuse or HACR Breaker Sizing Data Two Stage Cooling with Two Speed Indoor Fan Motor (cont) WITH PWRD C.O. ELEC. HTR NO P.E. WITH P.E. (pwrd fr/ unit) NOM. IFM TYPE DISC.
  • Page 78 APPENDIX D — ELECTRICAL INFORMATION (cont) Table AS — 50HCQD08 Unit Wire/Fuse or HACR Breaker Sizing Data Two Stage Cooling with Two Speed Indoor Fan Motor NO C.O. or UNPWR C.O. ELEC. HTR NO P .E. WITH P.E. (pwrd fr/ unit) NOM.
  • Page 79 APPENDIX D — ELECTRICAL INFORMATION (cont) Table AS — 50HCQD08 Unit Wire/Fuse or HACR Breaker Sizing Data Two Stage Cooling with Two Speed Indoor Fan Motor (cont) WITH PWRD C.O. ELEC. HTR NO P .E. WITH P.E. (pwrd fr/ unit) NOM.
  • Page 80 APPENDIX D — ELECTRICAL INFORMATION (cont) Table AT — 50HCQD09 Unit Wire/Fuse or HACR Breaker Sizing Data Two Stage Cooling with Two Speed Indoor Fan Motor NO C.O. or UNPWR C.O. ELEC. HTR NO P .E. WITH P.E. (pwrd fr/ unit) NOM.
  • Page 81 APPENDIX D — ELECTRICAL INFORMATION (cont) Table AT — 50HCQD09 Unit Wire/Fuse or HACR Breaker Sizing Data Two Stage Cooling with Two Speed Indoor Fan Motor (cont) WITH PWRD C.O. ELEC. HTR NO P .E. WITH P.E. (pwrd fr/ unit) NOM.
  • Page 82 APPENDIX D — ELECTRICAL INFORMATION (cont) Table AU — 50HCQD12 Unit Wire/Fuse or HACR Breaker Sizing Data Two Stage Cooling with Two Speed Indoor Fan Motor NO C.O. or UNPWR C.O. ELEC. HTR NO P .E. WITH P.E. (pwrd fr/ unit) NOM.
  • Page 83 APPENDIX D — ELECTRICAL INFORMATION (cont) Table AU — 50HCQD12 Unit Wire/Fuse or HACR Breaker Sizing Data Two Stage Cooling with Two Speed Indoor Fan Motor (cont) WITH PWRD C.O. ELEC. HTR NO P .E. WITH P.E. (pwrd fr/ unit) NOM.

  • Page 84: Appendix E - Wiring Diagrams

    APPENDIX E — WIRING DIAGRAMS 50HCQA CONTROL POWER SIZE VOLTAGE DRAWING PAGE DRAWING PAGE 208/230 - 1 - 60 48TM501434 - J 48TM501435 - I 208/230 - 3 - 60 48TM501434 - J 48TM501436 - I 460 - 3 - 60 48TM501434 - J 48TM501515 - K 575 - 3 - 60...
  • Page 85 APPENDIX E — WIRING DIAGRAMS (cont) Fig. B — 50HCQA04/A05 Control Wiring Diagram - 208/230-1-60; 208/230-3-60; 460-3-60...
  • Page 86 APPENDIX E — WIRING DIAGRAMS (cont) Fig. C — 50HCQA04/A05 Control Wiring Diagram — 575-3-60...
  • Page 87 APPENDIX E — WIRING DIAGRAMS (cont) Fig. D — 50HCQ*06 Control Wiring Diagram — 208/230-1-60; 208/230-3-60; 460-3-60...
  • Page 88 APPENDIX E — WIRING DIAGRAMS (cont) Fig. E — 50HCQ*06 Control Wiring Diagram — 575-3-60...
  • Page 89 APPENDIX E — WIRING DIAGRAMS (cont) Fig. F — 50HCQA07 Control Wiring Diagram — 208/230-1-60; 208/230-3-60; 460-3-60; 575-3-60...
  • Page 90 APPENDIX E — WIRING DIAGRAMS (cont) Fig. G — 50HCQD07 Heat Pump Control Wiring Diagram — 208/230; 460; 575 Tier 2 (1) Compressor...
  • Page 91 APPENDIX E — WIRING DIAGRAMS (cont) Fig. H — 50HCQ*08/09 Control Wiring Diagram — 208/230-1-60; 208/230-3-60; 460-3-60; 575-3-60...
  • Page 92 APPENDIX E — WIRING DIAGRAMS (cont) Fig. I — 50HCQ*12 Control Wiring Diagram — 208/230-1-60; 208/230-3-60; 460-3-60; 575-3-60...
  • Page 93 APPENDIX E — WIRING DIAGRAMS (cont) Fig. J — 50HCQ*04/05/06 Power Wiring Diagram — 208/230-1-60...
  • Page 94 APPENDIX E — WIRING DIAGRAMS (cont) Fig. K — 50HCQ*04/05/06 Power Wiring Diagram — 208/230-3-60...
  • Page 95 APPENDIX E — WIRING DIAGRAMS (cont) Fig. L — 50HCQ*04/05/06 Power Wiring Diagram — 460-3-60...
  • Page 96 APPENDIX E — WIRING DIAGRAMS (cont) Fig. M — 50HCQ*04/05/06 Power Wiring Diagram — 575-3-60...
  • Page 97 APPENDIX E — WIRING DIAGRAMS (cont) Fig. N — 50HCQA07 Power Wiring Diagram — 208/230-3-60; 460-3-60; 575-3-60...
  • Page 98 APPENDIX E — WIRING DIAGRAMS (cont) Fig. O — 50HCQD07 Power Wiring Diagram — 208/230-3-60; 460-3-60; 575-3-60...
  • Page 99 APPENDIX E — WIRING DIAGRAMS (cont) Fig. P — 50HCQ*08/09 Power Wiring Diagram — 208/230-3-60; 460-3-60; 575-3-60...
  • Page 100 APPENDIX E — WIRING DIAGRAMS (cont) Fig. Q — 50HCQ*12 Power Wiring Diagram — 208/230-3-60...
  • Page 101 APPENDIX E — WIRING DIAGRAMS (cont) Fig. R — 50HCQ*12 Power Wiring Diagram — 460-3-60; 575-3-60...
  • Page 102 APPENDIX E — WIRING DIAGRAMS (cont) Fig. S — 50HCQ PremierLink™ Control Diagram...
  • Page 103 APPENDIX E — WIRING DIAGRAMS (cont) Fig. T — 50HCQ RTU—Open Control Diagram...

  • Page 104: Appendix F - Motormaster

    ® APPENDIX F — MOTORMASTER SENSOR LOCATIONS SENSOR LOCATION Fig. V — 50HCQA05/A06 Outdoor Circuiting Fig. U — 50HCQA04 Outdoor Circuiting Sensor Location Fig. W — 50HCQA07 and 50HCQD07 Outdoor Circuiting...
  • Page 105 ® APPENDIX F — MOTORMASTER SENSOR LOCATIONS (cont) Sensor Location SENSOR LOCATION Locate sensor on feeder tube (as shown on coil whose headers are closest to the compressor access panel) Fig. Y — 50HCQD12 Outdoor Circuiting Fig. X — 50HCQD08/D09 Outdoor Circuiting...
  • Page 106 © 2019 Carrier Corporation Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53500234-01 Printed in U.S.A. Form 50HCQ-4-12-02SM Rev. A Pg 106 10-19 Replaces: 50HCQ-4-12-01SM...

  • Page 107: Unit Start-Up Checklist

    UNIT START-UP CHECKLIST (Remove and use for Job File) NOTE: To avoid injury to personnel and damage to equipment or property when completing the procedures listed in this start-up checklist, use good judgment, follow safe practices, and adhere to the safety considerations/information as outlined in preceding sec- tions of this Service and Maintenance Instructions document.
  • Page 108 © 2019 Carrier Corporation Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53500234-01 Printed in U.S.A. Form 50HCQ-4-12-02SM Rev. A Pg CL-2 10-19 Replaces: 50HCQ-4-12-01SM...

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