GMS8 33-3/8 Gas Furnace Units 80% AFUE, Single Stage ...

1 RT6621031r2 November 2013 This manual is to be used by qualified, professionally trained HVAC techniciansonly. Goodman does not assume any responsibility for property damage orpersonal injury due to improper service procedures performed by an unqualifiedperson. Refer to Service Manual RS6612006 for troubleshooting information. Refer to the appropriate Parts Catalog for part number information. Model numbers listed on page 33-3/8 " Gas Furnace Units80% AFUE, Single Stage ,Multi-Speed, Upflow HorizontalTECHNICAL MANUTECHNICAL MANUTECHNICAL MANUTECHNICAL MANUTECHNICAL MANUALALALALALC opyright 2013 Goodman Manufacturing Company, IDENTIFICATION2 The model and manufacturing number are used for positive identification of component parts used in use these numbers when requesting service or parts VOLTAGE!

2 Disconnect ALL power before servicing or installing this unit. Multiple powersources may be present. Failure to do so may cause property damage, personalinjury or and repair of this unitshould be performed ONLY byindividuals meeting the requirements of an "entry leveltechnician" as specified by the Air-Conditioning, Heating,and Refrigeration Institute (AHRI). Attempting to install orrepair this unit without such background may result inproduct damage, personal injury or will not be responsiblefor any injury or property damagearising from improper service or service procedures.

3 Ifyou install or perform service on this unit, you assumeresponsibility for any personal injury or property damagewhich may result. Many jurisdictions require a license toinstall or service heating and air conditioning S 80403 A X A ASUPPLY TYPEM: Upflow/Horiz ontalFURNACE TYPES: Single - Stage /Multi-SpeedAFUE8: 80%AIRFLOW CAP ABILI TY3: 12004: 16005: 2000 CABINETWIDTHA: 14"B: 17-1/2"C: 21"D: 24-1/2"ADDITIONALFEATURESN: Natural GasX: Low NOxPRODUCTTYPE:G: GoodmanMAJOR REVISIONA: Initial ReleaseMINOR REVISIONA: Initial ReleaseNOMINAL INPUT040: 40,000 Btuh060: 60,000 Btuh080: 80,000 Btuh100.

4 100,000 Btuh120: 120,000 Btuh140: 140,000 Btuh3 PRODUCT IDENTIFICATIONThe model and manufacturing number are used for positive identification of component parts used in use these numbers when requesting service or parts information. GMS80403A*BB GMS80603A*BB GMS80604B*BB GMS80804B*BB GMS80805C*BB GMS81005C*BB GMS81205D*BAThe United States Environmental Protection Agency ( EPA ) has issued various regulations re-garding the introduction and disposal of refrigerants introduced into this unit.

5 Failure to followthese regulations may harm the environment and can lead to the imposition of substantial regulations may vary by jurisdiction. Should questions arise, contact your local EPA not connect or use any devicethat is not design certified by Good-man for use with this unit. Seriousproperty damage, personal injury, reduced unit perfor-mance and/or hazardous conditions may result from theuse of such non-approved prevent the risk of propertydamage, personal injury, or death,do not store combustible materials or use gasoline orother flammable liquids or vapors in the vicinity of *These models available in Natural Gas and Low DESIGNNFPA 54/ANSI - latest edition.

6 In Canada, the fur-naces must be vented in accordance with the National Stan-dard of Canada, CAN/CSA and CAN/CSA -latest editions and : The vertical height of the Category I venting systemmust be at least as great as the horizontal length of theventing Clearances (Minimum)Unobstructed front clearanace of 24" for servicing is 6 1 1* 24" clearnace for serviceability CLEARANCE TO COMBUSTIBLE MATERIALS - INCHES** Single Wall Vent (SW) to be used only as a conncetor. Refer to the venting tables outlined in the Installation Manual for additional venting *Note: In all cases accessibility clearance shall take prece-dence over clearances from the enclosure where accessibil-ity clearances are greater.

7 All dimensions are given in Altitude DerateIMPORTANT NOTE: The Furnace as shipped requires nochange to run between 0 - 5500 feet. Do not attempt toincrease the firing rate by changing orifices or increasingthe manifold pressure below 5500 feet. This can cause poorcombustion and equipment altitude installations above 5500 feet may require botha pressure switch and an orifice change. These changesare necessary to compensate for the natural reduction inthe density of both the gas fuel and the combustion air athigher installations above 5500 feet, please refer to your dis-tributor for required kit(s).

8 Contact the distributor for a tabu-lar listing of appropriate manufacturer s kits for propane gasand/or high altitude installations. The indicated kits must beused to insure safe and proper Furnace operation. All conver-sions must be performed by a qualified installer, or OperationThe GMS8 furnaces are equipped with an electronic ignitiondevice used to light the burners and an induced draft blowerto exhaust combustion interlock switch prevents Furnace operation if the innerblower door is not in place.

9 Keep the blower access door inplace except for inspection and maintenance. (See illustra-tion on pages 5 and 6.)This Furnace is also equipped with a self-diagnosing elec-tronic control module. In the event a Furnace component isnot operating properly, the control module LED will flash onand off in a factory-programmed sequence, depending onthe problem encountered. This light can be viewed throughthe observation window in the blower access door. Refer tothe Troubleshooting Chart for further explanation of the LEDcodes and Abnormal Operation - Integrated Ignition Controlsection in the Service Instructions for an explanation of thepossible rated heating capacity of the Furnace should be greaterthan or equal to the total heat loss of the area to be total heat loss should be calculated by an approvedmethod or in accordance with ASHRAE Guide or ManualJ-Load Calculations published by the Air Conditioning Con-tractors of America.

10 *Obtain from: American National Standards Institute 1430 Broadway New York, NY 10018 Location Considerations The Furnace should be as centralized as is practicalwith respect to the air distribution system. Do not install the Furnace directly on carpeting, tile, orcombustible material other than wood flooring. When installed in a residential garage, the furnacemust be positioned so the burners and ignition sourceare located not less than 18 inches (457 mm) abovethe floor and protected from physical damage by :WARNINGTO PREVENT POSSIBLE PERSONAL INJURY OR DEATH DUE TO ASPHYXIATION, THIS Furnace MUST BE CATEGORY I VENTED.