Goodman GMH95 Installation Instructions Manual
Goodman GMH95 Installation Instructions Manual

Goodman GMH95 Installation Instructions Manual

Gas-fired warm air furnace
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G
(Type FSP CATEGORY IV Direct or Non Direct Vent Air Furnace)
ATTENTION INSTALLING PERSONNEL
As a professional installer you have an obligation to know the product better than the customer. This includes all safety
Prior to actual installation, thoroughly familiarize yourself with this Instruction Manual. Pay special attention to all safety
warnings. Often during installation or repair it is possible to place yourself in a position which is more hazardous than
Remember, it is your responsibility to install the product safely and to know it well enough to be able to instruct a customer
Safety is a matter of common sense...a matter of thinking before acting. Most dealers have a list of specific good safety
The precautions listed in this Installation Manual are intended as supplemental to existing practices. However, if there is
a direct conflict between existing practices and the content of this manual, the precautions listed here take precedence.
IO-299B
GMH95/GCH9
-F
W
AS
IRED
I
NSTALLATION
Installer: Affix all manuals adjacent to the unit.
These furnaces comply with requirements
embodied in the American National Stan-
dard / National Standard of Canada ANSI
Z21.47·CSA-2.3 Gas Fired Central Fur-
naces.
RECOGNIZE THIS SYMBOL AS A SAFETY PRECAUTION.
precautions and related items.
when the unit is in operation.
practices...follow them.
NOTE: Please contact your distributor or our website
for the applicable Specification Sheet referred to in this manual.
Goodman Manufacturing Company, L.P.
5151 San Felipe, Suite 500, Houston, TX 77056
www.goodmanmfg.com
2006-2007 Goodman Manufacturing Company, L.P.
©
A
F
ARM
IR
I
NSTRUCTIONS
in its safe use.
URNACE
®
C
US
7/07

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Summary of Contents for Goodman GMH95

  • Page 1 GMH95/GCH9 IRED URNACE NSTALLATION NSTRUCTIONS Installer: Affix all manuals adjacent to the unit. (Type FSP CATEGORY IV Direct or Non Direct Vent Air Furnace) These furnaces comply with requirements embodied in the American National Stan- ® dard / National Standard of Canada ANSI Z21.47·CSA-2.3 Gas Fired Central Fur-...
  • Page 2: Table Of Contents

    Table of Contents I. Component Identification ............................... 5 II. Safety ....................................6 (ESD) P ....................6 LECTROSTATIC ISCHARGE RECAUTIONS III. Product Application ..............................6 IV. Location Requirements & Considerations ......................... 7 ................................. 7 ENERAL ........................... 8 LEARANCES AND CCESSIBILITY ............................8 URNACE USPENSION ..........................
  • Page 3 Table of Contents XIV. Startup Procedure & Adjustment ..........................27 ..........................27 NTICIPATOR ETTING ............................27 RAIN RIMING ............................27 URNACE OPERATION ......................28 UPPLY RESSURE EASUREMENT .................. 28 ANIFOLD RESSURE EASUREMENT AND DJUSTMENT ) ..................29 NPUT EASUREMENT ATURAL ............................
  • Page 4 NSTALLER WARNING Before installing this unit, please read this manual thoroughly to familiarize yourself with specific items which must be adhered to, F THE INFORMATION IN THESE INSTRUCTIONS IS NOT FOLLOWED including but not limited to: unit maximum external static pressure, EXACTLY A FIRE OR EXPLOSION MAY RESULT CAUSING PROPERTY gas pressures, BTU input rating, proper electrical connections, cir-...
  • Page 5: Component Identification

    I. COMPONENT IDENTIFICATION Upflow/Horizontal Counterflow/Horizontal Gas Valve 22 Blower Door Interlock Switch Gas Line Entrance (Alternate) 23 Capacitor Pressure Switch 24 Integrated Control Module Gas Manifold (with fuse and diagnostic LED) Combustion Air Intake Connection / “Coupling” 25 24-Volt Thermostat Connections Hot Surface Igniter 26 Transformer (40 VA) Rollout Limit...
  • Page 6: Safety

    II. SAFETY or shuffle your feet, do not touch ungrounded objects, etc.). If you come in contact with an ungrounded object, repeat Please adhere to the following warnings and cautions when in- step 2 before touching control or wires. stalling, adjusting, altering, servicing, or operating the furnace. 4.
  • Page 7: Location Requirements & Considerations

    • 100% outside air is provided for combustion air The rated heating capacity of the furnace should be greater than or requirements during construction. Temporary ducting can equal to the total heat loss of the area to be heated. The total heat be used.
  • Page 8: Clearances And Accessibility

    following substances: Refer to the Specification Sheet applicable to your model for mini- mum clearances to combustible surfaces. One of the ventilation chlorinated waxes or cleaners openings must be within 12 inches of the top; the other opening chlorine-based swimming pool chemicals must be within 12 inches of the bottom of the confined space.
  • Page 9: Thermostat Location

    House depressurization can cause back drafting or improper com- f. After it has been determined that each appliance connected to the bustion of gas-fired appliances, thereby exposing building occu- venting system properly vents when tested as outlined above, re- pants to gas combustion products that could include carbon mon- turn doors, windows, exhaust fans, fireplace dampers and any other oxide.
  • Page 10 Equipment Located in Confined Spaces; All Air from Outdoors— Space, Unconfined. Inlet Air from Ventilated Crawl Space and Outlet Air to Ventilated For purposes of this Code, a space whose volume is not less than 50 Attic. See 5.3.3-b cubic feet per 1,000 BTU per hour of the aggregate input rating of all 2.
  • Page 11: Installation Positions

    NOTE: The single opening must have VII. HORIZONTAL APPLICATIONS & CONSIDERATIONS a free area of not less than one Chimney or Gas Vent square inch per 3000 BTU of ENERAL the total input rating of all equip- ment in the enclosure, but not less than Horizontal applications, in particular, may dictate many of the the sum of the areas of all vent connectors in the confined space.
  • Page 12: Alternate Electrical And Gas Line Connections

    This furnace is shipped from the factory configured for natural gas ALTERNATE FLUE AND DISCHARGE Bottom COMBUSTION AIR PIPE ALTERNATE FLUE PIPE at standard altitude. Propane gas installations require an orifice Return LOCATIONS LOCATION Duct change to compensate for the energy content difference between Connection natural and propane gas.
  • Page 13: Dual Certification : Non -Direct /Direct Vent

    ERTIFICATION IRECT IRECT ERMINATION OCATIONS This furnace is dual certified and may be installed as a non-direct NOTES: Refer to Section IV, Location Requirements and vent (single pipe) or direct vent (dual pipe) appliance. A non-direct Considerations for combustion air contaminant restrictions. vent installation requires only a vent/flue pipe, while a direct vent installation requires both a vent/flue pipe and a combustion air The following bullets and diagram describe the restrictions con-...
  • Page 14: Canadian Venting Requirements

    ANADIAN ENTING EQUIREMENTS NOTE: For non-direct vent installations, a minimum of one 90° elbow should be installed on the combustion air intake coupling IIn Canada, venting must conform to the requirements of the cur- to guard against inadvertent blockage. rent CAN/CSA-B149.1-05 Installation Code. Use only CSA-listed, ULC-S636 compliant two- or three-inch diameter PVC or ABS pipe, OMBUSTION solvent cement, and fittings throughout.
  • Page 15: Non -Direct Vent (Single Pipe ) Piping

    and the “Alternate Vent/Flue Location” figure. Secure field supplied vent/flue piping to the rubber elbow using a worm gear hose clamp. NOTE: Use of the alternate NOTE: Counterflow instructions follow the upflow instructions. vent/flue location for upright installations, requires the drain 1.
  • Page 16: Direct Vent (Dual Pipe ) Piping

    nace, refer to Section IX, Vent/Flue Pipe and Combustion Air - into the last joist space to penetrate the header, two 45° elbows Standard Furnace Connections or Alternate Furnace Connections should be used to reach the header rather than two 90° elbows. for specific details.
  • Page 17 tant flashing. Both the combustion air intake and a vent/flue pipe Horizontal terminations should be as shown in the following fig- terminations must be in the same atmospheric pressure zone. ure. Refer to Section IX, Vent/Flue Pipe and Combustion Pipe - For details concerning connection of pipes to the furnace, refer to Termination Location for location restrictions.
  • Page 18: Vent /Intake Terminations For Installation Of Multiple Direct Vent Furnaces

    X. CONDENSATE DRAIN LINES & DRAIN TRAP 90° Vent Medium Radius ENERAL Elbow A condensing gas furnace achieves its high level of efficiency by extracting almost all of the heat from the products of combustion 12” Min. and cooling them to the point where condensation takes place. The condensate which is generated must be piped to an appropri- 24”...
  • Page 19 1. Remove the rubber plug from the front cover drain port (right Cabinet Width Models "X" Length to Cut From Long or left side, depending on the intended drain trap mounting). (inches) (kBTU_Tons) End of Hose B 2. Secure Hose A to front cover drain port with a red hose 045__30 17 1/2 7 inches...
  • Page 20: Horizontal Installations

    For details concerning mounting of the drain trap, refer to Section PRIGHT RAIN OUNTING EFT OR IGHT ANEL X, Condensate Drain Lines and Drain Trap - Horizontal Drain Trap 1. Insert drain tubes into drain trap and position the drain trap Mounting (left or right side panel).
  • Page 21: Electrical Connections

    tions, the cabinet opening to the junction box must be sealed air ORIZONTAL RAIN OUNTING EFT OR IGHT ANEL tight using either a UL approved bushing such as Heyco Liquid 1. Position the drain trap against side panel with drain tubes Tight or by applying a UL approved non-reactive sealant to bush- inserted into trap.
  • Page 22: 115 Volt Line Connection Of Accessories

    fer to the following figure for thermostat connections to the inte- The integrated control module electronic air cleaner terminals (EAC) grated control module terminal strip. are energized with 115 volts whenever the circulator blower is en- ergized. 24 V UMIDIFIER The yellow wire connected to the I.D.
  • Page 23: General

    Refer to the National Fuel Gas Code, NFPA 54/ANSI Z223.1, and Natural Gas Capacity of Pipe information provided by the gas supplier to determine the proper In Cubic Feet of Gas Per Hour (CFH) Length of Nominal Black Pipe Size orifice size.
  • Page 24 • • Connect the furnace to the building piping by one of the Use listed gas appliance connectors in accordance with following methods: their instructions. Connectors must be fully in the same room as the furnace. – Rigid metallic pipe and fittings. •...
  • Page 25: Ropane As Anks And Iping

    ROPANE ANKS AND IPING WARNING WARNING DGES OF SHEET METAL HOLES MAY BE SHARP SE GLOVES AS A PRECAUTION WHEN REMOVING HOLE PLUGS F THE GAS FURNACE IS INSTALLED IN A BASEMENT AN EXCAVATED AREA OR A CONFINED SPACE IT IS STRONGLY RECOMMENDED TO IRECT TANDARD NLET...
  • Page 26: Circulating Air & Filters

    viewed for visual light inspection or such that a sampling probe Sizing Between First and Second Stage Regulator* Maximum Propane Capacities listed are based on 2 psig pressure drop at 10 psig setting. can be inserted into the airstream. The access panel must be Capacities in 1,000 BTU/hour.
  • Page 27: Upright Installations

    ORIZONTAL NSTALLATIONS COO LING AIRFLO W REQ UIREM ENT (CFM ) Filters must be installed in either the central return register or in the 1000 1200 1400 1600 2000 return air duct work. 0453BXA 194* 194* XIV. STARTUP PROCEDURE & ADJUSTMENT 0703BXA 324* 324*...
  • Page 28: As Upply Ressure Easurement

    Measuring Inlet Gas Pressure (Alt. Method) UPPLY RESSURE EASUREMENT NOTE: If measuring gas pressure at the drip leg, a field supplied hose barb fitting must be installed prior to making the hose CAUTION connection. If using the inlet pressure boss on the gas valve, then use the 36G Valve Pressure Check Kit, Goodman Part No.
  • Page 29: Gas Input Rate Measurement (Natural Gas Only )

    12. Remove manometer hose from outlet pressure boss. minutes. Ensure all registers are open and all duct dampers are in their final (fully or partially open) position. 13. Turn outlet pressure test screw in to seal pressure port 2. Place thermometers in the return and supply ducts as close (clockwise, 7 in-lb minimum).
  • Page 30: Normal Sequence Of Operation

    5. Turn ON power to furnace. • Igniter warm up begins after 15 second prepurge expires. 6. Verify proper temperature rise as outlined in Section XIV, • Low and high-stage gas valves open at end of igniter warm Startup Procedure and Adjustment - Temperature Rise. up period, delivering gas to burners and establishing flame.
  • Page 31: Fan Only Mode

    They are a normally-closed (electrically), manual-reset, tempera- ture activated sensors. These limits guard against overheating as The normal operational sequence in fan only mode is as follows: a result of insufficient conditioned air passing over the heat ex- • R and G thermostat contacts close, initiating a call for fan. changer.
  • Page 32: Diagnostic Chart

    system functions appropriately. Pay particular attention to the fol- IAGNOSTIC HART lowing items. Repair or service as necessary. • Flue pipe system. Check for blockage and/or leakage. Check WARNING the outside termination and the connections at and internal to the furnace. HIGH VOLTAGE! •...
  • Page 33: Induced Draft And Circulator Blowers

    out curling, floating, or lifting off. Flames must not impinge on the 12. Severe heat exchanger fouling is an indication of an sides of the heat exchanger firing tubes. operational problem. Perform the checks listed in Section XIV, Startup Procedure and Adjustments to reduce the NDUCED RAFT AND IRCULATOR...
  • Page 34: Before Leaving An Installation

    XXI. BEFORE LEAVING AN INSTALLATION • Cycle the furnace with the thermostat at least three times. Verify cooling and fan only operation. • Review the Owner’s Manual with the homeowner and discuss proper furnace operation and maintenance. • Leave literature packet near furnace. XXII.
  • Page 35: Troubleshooting Chart

    TROUBLESHOOTING CHART Associated Associated Symptoms of Abnormal Fault Description(s) Possible Causes Fault Description(s) Possible Causes Corrective Action Cautions and Notes Operation LED Code LED Code • Furnace fails to operate. NONE • No 115 volt power to • Manual disconnect switch •...
  • Page 36 TROUBLESHOOTING CHART Associated Symptoms of Abnormal Fault Description(s) Possible Causes Corrective Action Cautions and Notes Operation LED Code • Circulator blower runs • Primary or auxiliary • Check primary/ • Turn power OFF • Insufficient conditioned air continuously. No furnace limit circuit is open.
  • Page 37: Wiring Diagram

    WIRING DIAGRAM GMH95 & GCH9 STAGE DELAY MODE HEAT DELAY NOTE 6 ID-N COOL-H TO 115VAC/ 1 Ø /60 HZ POWER SUPPLY WITH STEADY ON = NORMAL OPERATION = CONTROL FAILURE 1 FLASH 2 FLASHES = PRESSURE SWITCH STUCK CLOSED...

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