Goodman GMH95 Technical Manual
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Goodman GMH95 Technical Manual

Goodman GMH95 Technical Manual

40" 95%
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See also: Instruction and Installation Manual
•
Refer to Service Manual RS6610004 for installation, operation, and troubleshooting information.
•
All safety information must be followed as provided in the Service Manual.
•
Refer to the appropriate Parts Catalog for part number information.
•
Model numbers listed on page 3.
This manual is to be used by qualified, professionally trained HVAC technicians only.
Goodman does not assume any responsibility for property damage or personal
injury due to improper service procedures or services performed by an unqualified
person.
Copyright © 2007,
2009-2010
TECHNICAL MANU
TECHNICAL MANU
TECHNICAL MANU AL
TECHNICAL MANU
TECHNICAL MANU
GMH95
40" 95% Gas Furnace
Goodman Manufacturing Company, L.P.
AL
AL
AL
AL
®
C
US
RT6612018 Rev. 6
July 2010

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Summary of Contents for Goodman GMH95

  • Page 1 This manual is to be used by qualified, professionally trained HVAC technicians only. RT6612018 Rev. 6 Goodman does not assume any responsibility for property damage or personal July 2010 injury due to improper service procedures or services performed by an unqualified person.

  • Page 2: Product Identification

    Disconnect ALL power before servicing or installing this unit. Multiple power sources may be present. Failure to do so may cause property damage, personal injury or death. Installation and repair of this unit Goodman will not be responsible WARNING should be performed ONLY by WARNING...
  • Page 3 WARNING that is not design certified by damage, personal injury, or death, Goodman for use with this unit. do not store combustible materials or use gasoline or Serious property damage, personal injury, reduced unit other flammable liquids or vapors in the vicinity of this performance and/or hazardous conditions may result appliance.

  • Page 4: Product Design

    3. Conversion kits for high altitude natural or propane gas General Operation operation are available. See High Altitude Derate chart The GMH95 furnaces are equipped with an electronic igni- for details. tion device used to light the burners and an induced draft 4.

  • Page 5: Component Identification

    COMPONENT IDENTIFICATION Upflow/Horizontal 1 Gas Valve 17 Electrical Connection Inlets (Alternate) 2 Gas Line Entrance (Alternate) 18 Coil Front Cover Pressure Tap 3 Pressure Switch 19 Coil Front Cover Drain Port 4 Gas Manifold 20 Drain Line Penetrations 5 Combustion Air Intake Connection / “Coupling” 21 Drain Trap 6 Hot Surface Igniter 22 Blower Door Interlock Switch...
  • Page 6 COMPONENT IDENTIFICATION GMH95*****XA* DISCHARGE DISCHARGE (DISCHARGE) 19 3/4 STANDARD GAS INTAKE SUPPLY HOLE PIPE CONDENSATE 2" PVC DRAIN TRAP w/ 3/4" PVC HIGH VOLTAGE DISCHARGE ELECTRICAL HOLE (RIGHT OR LEFT SIDE) HIGH VOLTAGE LEFT SIDE ELECTRICAL HOLE DRAIN LINE HOLES...
  • Page 7 PRODUCT DESIGN...
  • Page 8 PRODUCT DESIGN PRIMARY LIMIT Part Number 0130F00105 20162903 20162904 Open Setting (°F) GMH950453BXA* GMH950703BXA* GMH950704CXA* GMH950904CXA* GMH950905CXA* GMH950905DXA* GMH951155DXA* ROLLOUT LIMIT SW ITCHES Part Number 10123514 or 10123533 10123517 Open Setting (°F) GMH950453BXA* GMH950703BXA* GMH950704CXA* GMH950904CXA* GMH950905CXA* GMH950905DXA* GMH951155DXA* AUXILIARY LIMIT SW ITCHES Part Number 10123535 10123519...
  • Page 9 A large array of Amana brand coils are available for use with the GMH95 furnaces, in either upflow or horizontal applica- tions. These coils are available in both cased and uncased models (with the option of a field installed TXV expansion device).
  • Page 10 PRODUCT DESIGN Thermostats: NOTE: Complete lineup of thermostats can be found in the Thermostat Specification Sheets. Filters: Filters are required with this furnace and must be provided by the installer. The filters used must comply with UL900 or CAN/ULCS111 standards. Installing this furnace without filters will void the unit warranty. Upflow Filters This furnace has provisions for the installation of return air filters at the side and/or bottom return.

  • Page 11: Furnace Specifications

    FURNACE SPECIFICATIONS GMH95 GMH95 GMH95 GMH95 GMH95 GMH95 GMH95 GMH95 MODEL 0453BXA* 0703BXA* 0704CXA* 0904CXA* 0905CXA* 0905DXA* 1155DXA* Btuh Input (U S) 46,000 69,000 69,000 92,000 92,000 92,000 115,000 Output (US) 44,400 66,400 66,900 89,000 88,400 88,400 110,500 Input (C AN)

  • Page 12: Blower Performance Specifications

    BLOWER PERFORMANCE SPECIFICATIONS BLO W ER P ERF O RM ANCE (CF M & T e m p e ra tu re Rise vs. Ex te rn a l S ta tic P re ssu re ) Tons A C E XTE RNA L S TA TIC P RE S S URE (Inc hes W ater Colum n) Model M otor...
  • Page 13 BLOWER PERFORMANCE SPECIFICATIONS...
  • Page 14 WIRING DIAGRAMS GMH95[0453,0704,0905]*XAB GMH95[0703,0904,1155]*XAC STAGE DELAY MODE HEAT DELAY NOTE 6 COOL-H 6. TO RECALL THE LAST 5 FAULTS, MOST RECENT TO LEAST RECENT, DEPRESS SWITCH FOR MORE THAN 2 SECONDS WHILE IN STANDBY (NO THERMOSTAT INPUTS) Wiring is subject to change, always refer to the wiring diagram on the unit for the most up-to-date wiring.

  • Page 15: Wiring Diagrams

    GMH95[0453,0704,0905]*XAC WIRING DIAGRAMS GMH95[0703,0904,1155]*XAD BLOWER INTEGRATED HUMIDIFIER 24 VAC COMPARTMENT CONTROL MODULE HUMIDIFIER DOOR SWITCH TR (6) (OPEN WHEN 24 VAC DOOR OPEN) GND (8) 40 VA MVC (9) TRANSFORMER 115 VAC VALVE MVH (12) 24V THERMOSTAT CONNECTIONS MVL(2) ID BLOWER...
  • Page 16 WIRING DIAGRAMS GMH950905CXAA BLOWER HUMIDIFIER INTEGRATED 24 VAC COMPARTMENT CONTROL MODULE HUMIDIFIER DOOR SWITCH (OPEN WHEN TR (6) 24 VAC DOOR OPEN) GND (8) 40 VA VALVE MVC (9) TRANSFORMER 115 VAC MVH (12) 24V THERMOSTAT AUXILIARY LIMIT CONTROLS CONNECTIONS MVL(2) FRONT COVER PS (10)

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