COMFORT-AIRE Century HRG14P Service Manual
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COMFORT-AIRE Century HRG14P Service Manual

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SERVICE MANUAL
HRG14P
This is a safety alert symbol and should never be ignored. When you see this symbol on labels or in manuals, be alert to
the potential for personal injury or death.
WARNING
Improper installation, adjustment, alteration, service
or maintenance can cause property damage, personal
injury or loss of life. Installation and service must be
performed by a licensed professional HVAC installer (or
equivalent), service agency or the gas supplier.
CAUTION
As with any mechanical equipment, contact with sharp
sheet metal edges can result in personal injury. Take
care while handling this equipment and wear gloves
and protective clothing.
508220-01

Table of Contents

Technical Specifications - HRG14P.............................2
General ......................................................................15
Installation .................................................................15
Refrigeration Piping ...................................................17
Start-Up Procedure....................................................26
Operation ...................................................................27
Maintenance ..............................................................32
Homeowner Information ............................................34
Start-Up and Performance Checklist .........................40
Electric shock hazard.
Can cause injury or death. Before attempting
to perform any service or maintenance,
turn the electrical power to unit OFF at
disconnect switch(es). Unit may have
multiple power supplies.
*P508220-01*
Issue 2132
WARNING
(P) 508220-01
Page 1 of 40

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Summary of Contents for COMFORT-AIRE Century HRG14P

  • Page 1: Table Of Contents

    SERVICE MANUAL HRG14P This is a safety alert symbol and should never be ignored. When you see this symbol on labels or in manuals, be alert to the potential for personal injury or death. Table of Contents Technical Specifications - HRG14P......2 General ..............15 Installation ..............15 Refrigeration Piping ...........17...

  • Page 2: Technical Specifications - Hrg14P

    Technical Specifications - HRG14P MODEL NUMBER GUIDE SEER Series/ Heat Pump Residential Split ‘Green’ Gas Capacity S = Scroll Power Revision R-410A BTUH x 1000 Compressor 1 = 208/230-1-60 PHYSICAL AND ELECTRICAL DATA Compressor Outdoor Fan Motor Max. Over Min. Current Rated Voltage...
  • Page 3 PERFORMANCE WITH COILS, AIR HANDLERS AND FURNACES Indoor Model Cooling Heating 47° 17° Evap. Coil TXV Kit AHRI AHRI Reference Air Handlers Where Needed Furnace SEER Capacity Numbers HSPF Btuh Btuh (C,M)CG24P(A,B,C) 4P+TXV H4TXV01 18,000 203464654 15,700 9,800 HCG24V1P 15.5 12.5 18,000 203216916...
  • Page 4 PERFORMANCE WITH COILS, AIR HANDLERS AND FURNACES Indoor Model Cooling Heating 47° 17° Evap. Coil AHRI AHRI Reference TXV Kit Air Handlers Furnace SEER Capacity Numbers HSPF Btuh Btuh Where Needed (C,M)CG2430PB3P+TXV H4TXV01 GUH92C045B3M 12.5 23,600 204338059 20,000 12,100 (C,M)CG24PB4P+TXV H4TXV01 GUH92C045B3M 12.5...
  • Page 5 PERFORMANCE WITH COILS, AIR HANDLERS AND FURNACES Indoor Model Cooling Heating 47° 17° Evap. Coil AHRI AHRI Reference TXV Kit Air Handlers Where Needed Furnace SEER Capacity Numbers HSPF Btuh Btuh HMG36F1P 14.5 12.2 30,000 203216969 27,400 17,800 HMG36X1P 30,000 203216976 26,800 17,100 HWCG35T0A...
  • Page 6 PERFORMANCE WITH COILS, AIR HANDLERS AND FURNACES Indoor Model Cooling Heating 47° 17° Evap. Coil AHRI AHRI Reference TXV Kit Air Handlers Furnace SEER Capacity Numbers HSPF Btuh Btuh Where Needed (C,M)CG3036PC4P+TXV H4TXV01 GUH97M090C3M 15 12.5 29,800 204237821 25,400 15,700 (C,M)CG30PC5P+TXV H4TXV01 GUH97M090C3M 15...
  • Page 7 PERFORMANCE WITH COILS, AIR HANDLERS AND FURNACES Indoor Model Cooling Heating 47° 17° Evap. Coil AHRI AHRI Reference TXV Kit Air Handlers Furnace SEER Capacity Numbers HSPF Btuh Btuh Where Needed (C,M)CG36PC7P+TXV H4TXV02 GUH96T090C3M 34,600 204711067 29,600 18,800 (C,M)CG36PC7P+TXV H4TXV02 GUH96T090C5M 34,000 204711068...
  • Page 8 PERFORMANCE WITH COILS, AIR HANDLERS AND FURNACES Indoor Model Cooling Heating 47° 17° Evap. Coil AHRI AHRI Reference TXV Kit Air Handlers Furnace SEER Capacity Numbers HSPF Btuh Btuh Where Needed (C,M)CG42PC6P+TXV H4TXV02 GDD92C090C4M 12.2 40,000 204446738 37,400 24,200 (C,M)CG4248PC8P+TXV H4TXV02 GUH92C110C4M 12.5...
  • Page 9 PERFORMANCE WITH COILS, AIR HANDLERS AND FURNACES Indoor Model Cooling Heating 47° 17° Evap. Coil AHRI AHRI Reference TXV Kit Air Handlers Furnace SEER Capacity Numbers HSPF Btuh Btuh Where Needed (C,M)CG4248PCBP+TXV H4TXV02 GUH97M090C5M 15 12.5 42,000 204237846 37,800 25,200 MCG48TC2M GUH97M090C5M 15.5 12.3...
  • Page 10 PERFORMANCE WITH COILS, AIR HANDLERS AND FURNACES Indoor Model Cooling Heating 47° 17° Evap. Coil AHRI AHRI Reference TXV Kit Air Handlers Furnace SEER Capacity Numbers HSPF Btuh Btuh Where Needed MCG60TC2M GUH95T110C5M 15.5 12.4 45,000 204291397 42,500 26,200 (C,M)CG48PC9P+TXV H4TXV02 GUH95C110C5M 12.2...
  • Page 11 PERFORMANCE WITH COILS, AIR HANDLERS AND FURNACES Indoor Model Cooling Heating 47° 17° Evap. Coil AHRI AHRI Reference TXV Kit Air Handlers Furnace SEER Capacity Numbers HSPF Btuh Btuh Where Needed (C,M)CG48PD9P+TXV H4TXV02 GUH97M135D5M 14.5 12.2 47,000 204237861 39,500 25,000 (C,M)CG60PDAP+TXV H4TXV02 GUH97M135D5M 15...
  • Page 12 ACCESSORIES Description Where Used Kit Number 18, 24, 30 H4TXV01 TXV Kit 36, 42, 48 H4TXV02 H4TXV03 18, 24, 30, 36 93M04 Crankcase Heater 42, 48, 60 93M05 (Factory Installed) 12, 24, 30, 36 14W00 (Factory Installed) Sound Blanket 42, 48, 60 14W01 (Factory Installed) Short Cycle Protector All models...
  • Page 13 FAN BLADE SPECS Fan Blade HRG14P Dia. #of Blades Pitch Part # Print # 82W58 100060-31 43W37 100060-23 43W37 100060-23 32W31 100017-10 13W85 100060-17 13W85 100060-17 21W10 100060-11 Page 13 of 40 Issue 2132 508220-01...
  • Page 14 Discharge Line Expansion Valve Low Pressure Switch Reversing Valve Bi-Flow Filter Drier High Pressure Switch Vapor Line Service Valve Liquid Line Service Valve Figure 2. Typical Parts Arranegment - HRG14P 508220-01 Issue 2132 Page 14 of 40...

  • Page 15: General

    Always disconnect electrical power before removing General panel or servicing equipment. Keep hands and clothing away from moving parts. Read this entire instruction manual, as well as the Handle refrigerant with caution; refer to proper MSDS instructions supplied in separate equipment, before from refrigerant supplier.
  • Page 16 If conditions or local codes require the unit be attached to pad or mounting frame, tie down bolts should be used and secured to unit base pan. Discharge Air Building Structure 24” 6”* Mounting Slab 30” around Ground Level Control Mounting slab must slope slightly away from NOTE: See Table 2 for specific minimum clearance guidelines.

  • Page 17: Refrigeration Piping

    Filter Drier Refrigeration Piping The filter drier is very important for proper system operation and reliability. If the drier is shipped loose, it must be installed by the installer in the field. Unit warranty will be • Use only refrigerant grade copper tubes. void, if the drier is not installed.
  • Page 18 LINE SET IMPORTANT — Refrigerant lines must not contact structure. INSTALLATION REFRIGERANT LINE SET — INSTALLING Line Set Isolation — The following illustrations are VERTICAL RUNS (NEW CONSTRUCTION SHOWN) examples of proper refrigerant line set isolation: NOTE — Insulate liquid line when it is routed through areas where the surrounding ambient temperature could become higher than the REFRIGERANT LINE SET —...
  • Page 19 NOTE In lieu of R-410A, an industry-standard flushing agent may also be used. CYLINDER CONTAINING GAUGE CLEAN R-410A TO BE MANIFOLD USED FOR FLUSHING (Positioned to deliver liquid refrigerant) HIGH VAPOR LINE OUTDOOR SERVICE VALVE UNIT OPENED CLOSED EXISTING INDOOR UNIT LIQUID LINE SERVICE VALVE...
  • Page 20 Refrigerant Piping - Install Indoor Expansion Valve This outdoor unit is designed for use in systems that include an expansion valve metering device (purchased separately) at the indoor coil. See the Product Specifications for approved expansion valve kit match-ups and application information. The check expansion valve unit can be installed internal or external to the indoor coil.
  • Page 21 Refrigerant Piping - Brazing Procedures CAP AND CORE REMOVAL CUT AND DEBUR Cut ends of the refrigerant lines square (free from nicks or dents) Remove service cap and core from and debur the ends. The pipe must remain round. Do not crimp end both the vapor and liquid line service of the line.
  • Page 22 WRAP SERVICE VALVES To help protect service valve seals during brazing, wrap water-saturated cloths around service valve bodies and copper tube stubs. Use additional water-saturated cloths underneath the valve body to protect the base paint. FLOW NITROGEN Flow regulated nitrogen (at 1 to 2 psig) through the refrigeration gauge set into the valve stem port connection on the liquid service valve and out of the vapor valve stem port.
  • Page 23 Leak Test and Evacuation LEAK TEST HIGH MANIFOLD GAUGE SET OUTDOOR UNIT TO VAPOR SERVICE VALVE NOTE - Position canister to deliver liquid refrigerant. NITROGEN HFC-410A CONNECT GAUGE SET A - Connect the high pressure hose of an HFC-410A manifold gauge set to the vapor valve service port. NOTE - Normally, the high pressure hose is connected to the liquid line port.
  • Page 24 EVACUATION HIGH CONNECT GAUGE SET NOTE - Remove cores from service valves (if not already done). A - Connect low side of manifold gauge set with 1/4 SAE in-line tee to vapor line service valve B - Connect high side of manifold gauge set to OUTDOOR MANIFOLD liquid line service valve...

  • Page 25: Electrical - Circuit Sizing And Wire Routing

    Electrical – Circuit Sizing and Wire Routing WARNING In the U.S.A., wiring must conform with current local codes Fire Hazard. Use of aluminum wire with this product and the current National Electric Code (NEC). In Canada, may result in a fire, causing property damage, severe wiring must conform with current local codes and the injury or death.

  • Page 26: Start-Up Procedure

    The following illustration provides an example of control wiring connections when using a standard thermostat. ROUTING HIGH VOLTAGE, GROUND AND CONTROL WIRING HIGH VOLTAGE / GROUND WIRES Any excess high voltage field wiring should be trimmed and secured away from any low voltage field wiring. To facilitate a conduit, a cutout is located in the bottom of the control panel.

  • Page 27: Operation

    Before final adjustment is made to the refrigerant charge, Add refrigerant if subcooling is lower than table. it is imperative that proper indoor airflow be established. Recover refrigerant if subcooling is high. Airflow will be higher across a dry coil versus a wet coil. If ambient temp is lower than 60°F, check charge in Blower charts are calculated with a dry or wet coil basis.
  • Page 28 TEST PINS AMBIENT DEFROST THERMOSTAT TERMINATION PINS PIN SETTINGS SENSOR PLUG-IN (COIL & AMBIENT SENSORS) DIAGNOSTIC LEDs DELAY PINS REVERSING 24V TERMINAL VALVE STRIP CONNECTIONS PRESSURE SWITCH CIRCUIT CONNECTIONS Note - Component Locations Vary by Board Manufacturer Figure 8. Control Board Defrost System Sensors being open, shorted or out of the temperature range of the sensor, the board will not perform demand or...

  • Page 29: Control Board Diagnostics And Test Mode

    Delay Mode Actuation When the reversing valve is de-energized, the Y1 circuit is The defrost system has a field-selectable function to energized, and the coil temperature is below 35°F (2°C), reduce occasional sounds that may occur while the unit is the board logs the compressor run time.
  • Page 30 DS1 and DS2 System Status, Fault and Lockout Codes Type Condition / Code Possible Cause(s) Solution Green 1. Check control transformer power (24V). No power (24V) to control Status Power Problem board terminals R and C or 2. If power is available to control board and control board failure.
  • Page 31 Control Control Label Purpose Function Locations or Description The control board has selections which are: 50, 70, 90, and 100°F Defrost Temperature (10, 21, 32 and 38°C). The shunt termination pin is factory-set at 50°F 50, 70, 90, 100 Termination Shunt (10°C).

  • Page 32: Maintenance

    Maintenance Regular Maintenance Requirements Your system should be regularly inspected by a qualified service technician. These regular visits may include (among other things) checks for: • Motor operation Remove two • Ductwork air leaks screws at top panel to remove •...
  • Page 33 WARNING To prevent personal injury, or damage to panels, unit or structure, be sure to observe the following: While installing or servicing this unit, carefully stow all removed panels out of the way, so that the panels will not cause injury to personnel, nor cause damage to objects or structures nearby, nor will the panels be subjected to damage (e.g., being bent or scratched).

  • Page 34: Homeowner Information

    Homeowner Information Fan Switch In AUTO or INT (intermittent) mode, the blower operates WARNING only when the thermostat calls for heating or cooling. This ELECTRICAL SHOCK HAZARD! mode is generally preferred when humidity control is a priority. Turn OFF electric power to unit before performing any maintenance or removing panels or doors.
  • Page 35 IF YOUR SYSTEM STILL DOES NOT OPERATE, CONTACT YOUR SERVICING DEALER. Be sure to describe the problem, and have the model and serial numbers of the equipment available. If warranty replacement parts are required, the warranty must be processed through a qualified distribution location. Page 35 of 40 Issue 2132 508220-01...
  • Page 36 Figure 11. Typical Factory Wiring (-018 through -030 models) 508220-01 Issue 2132 Page 36 of 40...
  • Page 37 Figure 12. Typical Factory Wiring (-036 through -060 models) Page 37 of 40 Issue 2132 508220-01...
  • Page 38 Y2 IS NOT USED WITH SINGLE STAGE UNITS Figure 13. Wiring Diagram 018 - 030 Models 508220-01 Issue 2132 Page 38 of 40...
  • Page 39 Y2 IS NOT USED WITH SINGLE STAGE UNITS Figure 14. Wiring Diagram 036 - 060 Models Page 39 of 40 Issue 2132 508220-01...

  • Page 40: Start-Up And Performance Checklist

    Start-Up and Performance Checklist Job Name _________________________________________ Job no. _____________________________ Date ________________ Job Location ____________________________________________ City ______________________ State ____________________ Installer ________________________________________________ City ______________________ State ____________________ Unit Model No. _____________________ Serial No. __________________________ Service Technician ____________________ Nameplate Voltage __________________________________________________________________________________________ Rated Load Ampacity ________________ Compressor _______________________ Outdoor Fan ________________________ Maximum Fuse or Circuit Breaker _______________________________________________________________________________ □...

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