technical manu technical manual
Contents
1. Cl RCULATOR BEMER ELECTRONI C A R CLEANER NDUCER CLEA LO CIR EAC coo HEAT HEAT PARK NEU EAC ND K2 K2 RO2 7 ROLL o K3 K6 ROL F HH Em 9 K7 XFMR LINE HOT 1 120 VAC JE XFMR FACTORY TR JUNPER KS CO L R K4 i J PG 1 GN GND ia gm PS FP MN MEy HLO PSO THERMOSTAT FLAME SENSOR os LIMT TOR EDD 2 ST 2 chs VAVE PRESSURE SW TCH TYPICAL SCHEMATIC GMH8 MODEL FURNACES WR 50M56 289 INTEGRATED IGNITION CONTROL This schematic is for reference only Not all wiring is as shown above Always refer to the appropriate wiring diagram for the unit being serviced 162. TECHNICAL MANUAL GMH8 39 80 Gas Furnace 80 AFUE 2 Stage Convertible Multi Speed Upflow Horizontal e Refer to Service Manual RS6610004 for installation operation and troubleshooting information All safety information must be followed as provided in the Service Manual e Refer to the appropriate Parts Catalog for part number information e Model numbers listed on page 05 Liste 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 RT6621014 Rev 2 erson p June 2009 Copyright 2006 2009 Goodman Manufacturing Company L P PRODUCT IDENTIFICATION The model and manufacturing number are used for positive identification of component parts used in manufacturing Please use these numbers when requesting service or parts information Minor Revision Product Type G Goodman Supply Type A Initial Release Major Revision A Initial Release Furnace Type H Two Stage Multi Speed Additional Features M Upflow Horizontal Nominal Input N Natural Gas 045 45 000 Btuh X Low NOx 070 70 000 Btuh 090 90 000 Btuh Cabinet Width 115 115 000 Btuh 140 140 000 Btuh A 14 21 171 2 241 2 Airflow
3. Alt Vent Location 9 im x 7 Alt Gas Inlet J Alt High Voltage Alt Low Voltage PRODUCT DESIGN PRESSURE SWITCH TRIP POINTS PRESSURE SWITCH TRIP POINTS AND USAGE CHART AND USAGE CHART SQUARE NOSE ROUND NOSE TRIP POINT ID BLOWER ID BLOWER PRESSURE ID BLOWER PRESSURE PRESSURE SWITCH PRESSURE SWITCH SWITCH PART GMH80453AN B1370142 GMH80453AN 1370142 GMH80703AN B1370142 GMH80703AN 060 1370142 80903 1370179 80904 1370179 For installaions in Canada the 8 furnace is certified only to 4 500 ft Negative pressure readings are in inches of water column w c T O D PRIMARY LIMIT ROLLOUT LIMIT SWITCHES B1370145 Open Setting F 300 GMH80703AN GMHB0905CN GMH81155CN PRODUCT DESIGN Coil Matches A large array of Goodman brand coils are available for use with the GDH8 furnaces in dedicated downflow applications These coils are available in both cased and uncased models with the option of a field installed TXV expansion device These 80 furnaces match up with the existing Goodman brand coils as shown in the chart below Coil Matches Goodman units using R22 and R 410A EXPANSION REVISION TYPE F Flowrater C Indoor Coil REFRIGERANT CHARGE 6 R 410A or R 22 CABINET FINISH 2 R29 U Unpainted 4 R 410a P Painted N Unpainted Case NOMI
4. MEDIUM GMH80903BN MEDIUM GMH80904BN MEDIUM GMH80905CN MEDIUM GMH81155CN MEDIUM GMH81405DN MEDIUM EXTERNAL STATIC PRESSURE Inches Water Column RISE RISE RISE RISE CFM CFM 1511 25 28 30 30 30 32 36 37 37 38 39 CFM in chart is without filters s Filters do not ship with this furnace but must be provided by the installer All furnaces ship as high speed cooling Installer must adjust blower cooling speed as needed For most jobs about 400 CFM per ton when cooling is desirable INSTALLATION IS TO BE ADJUSTED TO OBTAIN TEMPERATURE RISE WITHIN THE RANGE SPECIFIED ON THE RATING PLATE The chart is for information only For satisfactory operation external static pressure must not exceed value shown on rating plate The shaded area indicates ranges in excess of maximum external static pressure allowed when heating The data for 0 6 w c to 0 8 w c is shown for air conditioning purposes only The dashed areas indicate a temperature rise not recommended for this model The above chart is for U S furnaces installed at 0 4000 feet At higher altitudes a properly derated unit will have approximately the same temperature rise at a particular CFM while the ESP at that CFM will be lower 13 BLOWER PERFORMANCE SPECIFICATIONS 091 081 0 0001 LNdLNO OLL 001 06 08 04 0 9 0 9 OV 06 3519 80 L X W49 LNdLNO W49
5. 0 60 10x6 Rated External Static w c Temperature Rise F Pressure Switch Trip Point w c Blower Wheel D x W Blower Horsepower 1 3 1 3 Blower Speeds 4 4 Max CFM 0 5 E S P Power Supply Volts Hz Ph 115 60 1 115 60 1 Minimum Circuit Ampacity MCA 8 1 8 1 Maximum Overcurrent Device 15 15 Transformer VA 40 40 ID Blower Pressure Switch Trip Point w c Square Nose Blowers ID Blower Pressure Switch Trip Point w c Round Nose Blowers Primary Limit Setting F Auxiliary Limit Setting F Rollout Limit Setting F Fan Delay On Heating Off Heating Fan Delay On Cooling Off Cooling Fan Delay On Fan Only Gas Supply Pressure Natural Propane w c Manifold Pressure Natural Propane w c Orifice Size Natural Propane Number of Burners Vent Connector Diameter inches Shipping Weight Ibs Low NOx model available 1 These furnaces are manufactured for natural gas operation Optional kits are available for conversion to propane operation 2 Minimum Circuit Ampacity calculated as 1 25 x Circulator Blower Amps 1 0 Blower Amps Wire sizes should be determined in accordance GMH80704BN 0 20 0 50 20 50 0 60 10x8 1 2 4 115 60 1 12 5 15 40 MH80903BA GMH80904BN GMH80905CN GMH81155CN G 115 000 92 000 80 000 80 0 0 20 0 50 35 65 0 20 0 50 30 60 0 20 0 50 35 65 0 60 0 60 0 70 0 70 10x8 10x8 10
6. 80 LAdLNO 19 SVINWYOSA 009 LYVHO ASIY AYNIVEAdWAL SA LNdLNO NLA Ol 0 06 OV OS 09 OZ 08 06 001 5 4 1 14 WIRING DIAGRAMS WARNING DISCONNECT POWER BEFORE SERVICING WIRING TO UNIT MUST BE PROPERLY POLARIZED AND GROUNDED 24 VAC HUMIDIFIER uo yo STG 5 MODE 60SEC 005 6 SEE NOTES AUXILIARY BR LIMITS INTEGRATED CONTROL MODULE BR INTEGRATED CONTROL MODULE ID BLOWER AUXILIARY PRESSURE LIMIT CONTROLS SWITCH AUTO RESET PRIMARY LIMIT CONTROL SNOILOASNNOO 5 Ave MANUAL RESET ROLLOUT LIMIT CONTROL S SINGLE CONTROL ON SOME MODELS XFMR 3 24 VAC TRANSFORMER 115 VAC FLAME SENSOR HOT SURFACE IGNITER aan 18 JINON 1 JINON TOY LNOSD 1 1 N ELECTRONIC 15 PIN PLUG AIR CLEANER ON SOME MODELS BLOWER COMPARTMENT BURNER COMPARTMENT 24 VAC DOOR SWITCH HUMIDIFIER SWITCH SWITCH LOCATED IN BLOWER COMPARTMENT ON SOME MODELS WARNING RD 2 DISCONNECT POWER YL PRESSURE YL BE
7. CODES 6 TO RECALL THE LAST 5 FAULTS MOST RECENT TO LEAST RECENT DEPRESS SWITCH 0140F00593 REV 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 PU Pl gt x gt pre 2 l Z O gt 2 7O 25 lt i 0 cc On T gt lt n 5E Or gt gt amp a1 a al a T OF NZ 5 HIGH VOLTAGE LOW VOLTAGE 24V LOW VOLTAGE FIELD HI VOLTAGE 115V HI VOLTAGE FIELD JUNCTION TERMINAL INTERNAL TO INTEGRATED CONTROL PLUG CONNECTION EQUIPMENT GND s FIELD GND FIELD SPLICE wW SWITCH og IGNITER SWITCH PRESS ogo OVERCURRENT PROT DEVICE CHHPH HOHH COLOR CODES PK PINK YL YELLOW BR BROWN OR ORANGE WH WHITE PU PURPLE BL BLUE GR GREEN GY GRAY BK BLACK RD RED 15 SCHEMATICS HIGH VOLTAGE WARNING 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
8. Capability 3 1200 4 1600 5 2000 HIGH VOLTAGE A WARNING 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 Goodman will not be responsible WARNING Installation and repair of this unit A WARNING for any injury or property damage 4 WARNING should be performed ONLY by arising from improper service or service procedures If individuals meeting the requirements of an entry level you install or perform service on this unit you assume technician as specified by the Air Conditioning Heating responsibility for any personal injury or property damage and Refrigeration Institute AHRI Attempting to install or which may result Many jurisdictions require a license to repair this unit without such background may result in install or service heating and air conditioning equipment product damage personal injury or death PRODUCT IDENTIFICATION The model and manufacturing number are used for positive identification of component parts used in manufacturing Please use these numbers when requesting service or parts information 1 GMH80453AN 1 GMH80703AN 1 GMH80704BN GMH80903BN 1 GMH80904BN 1 GMH80905CN 1 GMH81155CN 1 GMH81405DN 1 Units with low NOx models available A WARNING The United States Environmental Protection Agency EPA has issued various regulations re garding the in
9. COMBUSTIBLE MATERIALS INCHES e i i 24 clearance for serviceability recommended Single Wall Vent SW to be used only as conncetor Refer to the venting tables outlined in the Installation Manual for additional venting requirements Note In all cases accessibility clearance shall take prece dence over clearances from the enclosure where accessi bility clearances are greater All dimensions are given in inches High Altitude Derate When this furnace is installed at high altitude the appropri ate High Altitude orifice kit must be installed This is re quired due to the natural reduction in the density of both the gas fuel and combustion air as altitude increases The kit will provide the proper design certified input rate within the specified altitude range INPUT PER BURNER 22 500 BTUH NATURAL GAS 20 000 BTUH L P soo sooo T aooo US BURNER ORIFICE 44 55 44 55 45 56 45 56 46 57 47 58 47 58 CANADA BURNER HA 02 HIGH ALTITUDE CONVERSION KIT REQUIRED Tabled data is based upon the furnace input being reduced for altitudes above sea level U S 4 per 1 000 feet Canada 10 derate for 2 000 4 000 feet High altitude kits are purchased according to the installa tion altitude and usage of either natural or propane gas Refer to the chart above for a tabular listing of appropriate altitude ranges and corresponding manufa
10. FORE SERVICING PRIMARY LIMIT YL WI DISCONNECT SWITCH WIRING TO UNIT MUST BE PROPERLY POLARIZED L AND GROUNDED 115VAC 1 0 60 HZ POWER SUPPLY WITH OVERCURRENT PROTECTION DEVICE JUNCTION HOT SURFACE LINE N IGNITER GAS VALVE INDUCED DRAFT BROWER TO 115 VAC 1 60HZ PU u POWER SUPPLY WITH FLAME OVERCURRENT PROTECTION SENSOR DEVICE OLLOUT LIMITS SINGLE CONTROL ON SOME MODELS STEADY ON NORMAL OPERATION OFF CONTROL FAILURE 1 FLASH SYSTEM LOCKOUT RETRIES RECYCLES EXCEEDED 2 FLASHES PRESSURE SWITCH STUCK CLOSED 3 FLASHES PRESSURE SWITCH STUCK OPEN 4 FLASHES OPEN HIGH LIMIT 5 FLASHES FLAME SENSE WITHOUT GAS VALVE 6 FLASHES OPEN ROLLOUT OR OPEN FUSE 7 FLASHES LOW FLAME SIGNAL 8 FLASHES CHECK IGNITER OR IMPROPER GROUND RAPID FLASHES REVERSED 115 VAC POLARITY VERIFY GND NOTES 1 SET HEAT ANTICIPATOR ON ROOM THERMOSTAT AT 0 7 AMPS 2 MANUFACTURER S SPECIFIED REPLACEMENT PARTS MUST BE USED WHEN SERVICING 3 IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE FURNACE MUST BE REPLACED IT MUST BE REPLACED WITH WIRING MATERIAL HAVING A TEMPERATURE RATING OF AT LEAST 105 C USE COPPER CONDUCTORS ONLY 4 BLOWER SPEEDS SHOULD BE ADJUSTED BY INSTALLER TO MATCH THE INSTALLATION REQUIREMENTS SO AS TO PROVIDE THE CORRECT HEATING TEMPERATURE RISE AND THE CORRECT COOLING CFM SEE SPEC SHEET FOR AIR FLOW CHART 5 UNIT MUST BE PERMANENTLY GROUNDED AND CONFORM TO N E C AND LOCAL
11. ING 1 Category Venting is venting at a non positive pressure A furnace vented as Category is considered a fan as sisted appliance and the vent system does not have to be gas tight NOTE Single stage gas furnaces with induced draft blowers draw products of combustion through a heat exchanger allowing in some instances common venting with natural draft appliances i e water heaters All installations must be vented in accordance with National Fuel Gas Code NFPA 54 ANSI 2223 1 latest edition In Canada the furnaces must be vented in accordance with the National Standard of Canada CAN CSA B149 1 and CAN CSA B149 2 latest editions and amendments NOTE The vertical height of the Category venting system must be at least as great as the horizontal length of the venting system 2 Line voltage wiring can enter through the right or left side of the furnace Low voltage wiring can enter through the right or left side of furnace 3 Conversion kits for propane gas and high altitude natural and propane gas operation are available See High Alti tude Derate chart for details 4 Installer must supply the following gas line fittings de pending on which entrance is used Left Two 90 Elbows one close nipple straight pipe Right Straight pipe to reach gas valve PRODUCT DESIGN Accessibility Clearances Minimum Unobstructed front clearance of 24 for servicing is rec ommended MINIMUM CLEARANCE TO
12. NAL WIDTH FOR GAS FURNACE A Fits 14 Furnace Cabinet APPLICATION B Fits 17 1 2 Furnace Cabinet A Upflow Downflow Coil C Fits 21 Furnace Cabinet H Horizontal A Coil D Fits 24 1 2 Furnace Cabinet S Horizontal Slab Coil N Does Not Apply Horizontal Slab Coils NOMINAL CAPACITY RANGE 13 SEER 1824 1 1 2 to 2 Tons 3030 2 1 2 Tons 3636 3 Tons 3642 3 to 3 1 2 Tons 3743 3 to 3 1 2 Tons 4860 4 amp 5 Tons 4961 4 amp 5 Tons All CAPF coils amp D widths have insulated blank off plates for use with one size smaller furnaces CAPF coils have a CAUF equivalent All CHPF coils amp D heights have an insulated Z bracket for use with one size smaller furnace All proper coil combinations are subject to being AHRI rated with a matched outdoor unit 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 The furnace will accommodate the following filter sizes depending on cabinet size Side Return s Bottom Return Cabinet Nominal Approx Cabinet Nominal Approx Widt
13. cturer s high altitude Natu ral Gas and Propane Gas kits For a tabular listing of appro priate altitude ranges and corresponding manufacturer s High Altitude Pressure Switch kits refer to either the Pressure Switch Trip Points amp Usage Chart in this manual or the Ac cessory Charts in Service Instructions COMPONENT IDENTIFICATION NS Flue Pipe Connection 9 Gas Line Entrance Gas Valve 4 Gas Line Entrance Induced Draft Blower Rollout Limit 5 Blower Door Interlock Switch 11 Inshot Burner 6 Z V N Gas Manifold 4 Circulator Blower 19 Junction Transformer 13 Integrated Control Module 42 Upflow Horizontal 1 Gas Valve 10 Induced Draft Blower 2 Gas Line Entrance Alternate 11 Blower Door Interlock Switch 3 Pressure Switch es 12 Integrated Control Module 4 Gas Manifold with fuse and diagnostic LED 5 Rollout Limit 13 Transformer 40 VA 7 Primary Limit 14 Circulator Blower 8 Gas Line Entrance 15 Junction Box 9 Flue Pipe Connection Alternate PRODUCT DIMENSIONS Alt Vent Location 19 5 8 7116 12 3 16 N GMH80453AN GMH80703AN GMH80704BN GMH80903BN GMH80904BN GMH80905CN GMH81155CN GMH81405DN All dimensions are in inches 2 1 16
14. h Filter Size Flow Area Width Filter Size Flow Area in in in Refer to Minimum Filter Area tables to determine filter area requirement NOTE Filters can also be installed elsewhere in the duct system such as a central return PERMANENT NOMINAL 600 F M FACE VELOCITY DISPOSABLE NOMINAL 300 F M FACE VELOCITY 10 PRODUCT DESIGN Dual aver Configuration amp Operation DualSaver This furnace is capable of the following heating modes Single Stage Factory Setting e Modified Two Stage Fixed 5 Min Low Stage Auto Time 1 12 Min Low Stage To change from the factory single stage operation adjust the dipswitches on the ignition control as follows Off On Mode pode Dipswitch 5 Min Fixed 2 Stage Delay Dipswitch Auto 1 Note This furnace is designed to be used with a single stage room thermostat Call for Heat Call for Heat Safety Circuit Check Safety Circuit Check Start Furnace Start Furnace in Low Stage in Low Stage Low Heat Blower Low Heat Blower Delay Time 5 Min Delay Time 1 12 Min Gas Valve Switch Gas Valve Switch to 2nd Stage to 2nd Stage Blower Switch to Blower Switch to Hi Heat Operation Hi Heat Operation T Stat Satisfied T Stat Satisfied FURNACE SPECIFICATIONS MH80453AN H80703AN G GM Input Natural Gas BTUH Output Natural Gas BTUH Output LP BTUH A F U E 0 20 0 50 25 55 0 60 10x6 0 20 0 50 25 55
15. to the Troubleshooting Chartfor further explanation of the LED codes and Abnormal Operation Integrated Ignition Control section in the Service Instructions for an explanation of the possible problem The rated heating capacity of the furnace should be greater than or equal to the total heat loss of the area to be heated The total heat loss should be calculated by an approved method or in accordance with ASHRAE Guide or Manual J Load Calculations published by the Air Conditioning Con tractors of America Obtain from American National Standards Institute 1430 Broadway New York NY 10018 Location Considerations furnace should be as centralized as is practical with respect to the air distribution system e Donotinstall the furnace directly on carpeting tile or combustible material other than wood flooring e When suspending the furnace from rafters or joists use 3 8 threaded rod and 2 x 2 x 3 8 angle as shown in the Installation and Service Instructions The length of the rod will depend on the application and clearance necessary When installed in a residential garage the furnace must be positioned so the burners and ignition source are located not less than 18 inches 457 mm above the floor and protected from physical damage by ve hicles To PREVENT POSSIBLE PERSONAL INJURY OR DEATH DUE TO ASPHYXIATION THIS FURNACE MUST BE CATEGORY VENTED Do NOT VENT USING Catecory III VENT
16. troduction and disposal of refrigerants introduced into this unit Failure to follow these regulations may harm the environment and can lead to the imposition of substantial fines These regulations may vary by jurisdiction Should questions arise contact your local EPA office Do not connect or use any device i A WARNING a A A WARNING To prevent the risk of property that is not design certified by WARNING damage personal injury or death With this anit 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 from the use of such non approved devices PRODUCT DESIGN General Operation The GMH8 furnaces are equipped with an electronic ignition device used to light the burners and an induced draft blower to exhaust combustion products An interlock switch prevents furnace operation if the blower door is not in place Keep the blower access door in place except for inspection and maintenance This furnace is also equipped with a self diagnosing elec tronic control module In the event a furnace component is not operating properly the control module LED will flash on and off in a factory programmed sequence depending on the problem encountered This light can be viewed through the observation window in the blower access door Refer
17. x10 10x10 1 3 1 2 1 2 1 2 4 4 4 4 0 20 0 50 35 65 115 60 1 115 60 1 115 60 1 115 60 1 8 1 12 5 12 5 12 5 15 15 15 15 40 40 40 40 with National Electrical Codes Extensive wire runs will require larger wire sizes 3 Maximum Overcurrent protections Device refers to maximumrecommended fuse or circult breaker size May use time delay fuses or HACR type circuit breakers of the same sizes as noted NOTES 1 For elevations above 2000 feet the rating should be reduced by 4 for each 1000 feet above sea level The furnace must not be derated orifice changes should only be made if necessary for altitude 2 total heat loss from the structure as expressed in TOTAL BTU HR must be calculated by the manufacturers method in accordance with the A S H R A E GUIDE or MANUAL J LOAD CALCULATIONS published by the AIR CONDITIONING CONTRACTORS OF AMERICA The total heat loss calculated should be equal to or less than the heating capacity Output based on D O E test procedures steady state efficiency times output 12 GMH81405DN 140 000 112 000 96 000 80 0 0 20 0 50 40 70 1 35 10 10 3 4 4 2152 115 60 1 14 7 15 40 75 60 150 120 300 30 150 BLOWER PERFORMANCE SPECIFICATIONS BLOWER PERFORMANCE CFM amp Temperature Rise vs External Static Pressure a Heating Speed As Shipped GMH80453AN MEDIUM GMH80703AN MEDIUM GMH80704BN
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