Goodman GMN SERIES, Installation & Operating Instructions Manual

Page 1: ...INSTALLATION OPERATING INSTRUCTIONS for GMN SERIES GAS FURNACES PATENT PENDING GoodmanManufacturingCompany L P IO 554 1501 Seamist Houston Texas 77008 11 93...

Page 2: ...Piping 8 Circulating Supply Air and Return Air 8 9 ElectricalConnection 9 Thermostat Location and Low Voltage Connections 9 10 ToRateFurnace 10 Main Burner Adjustment 11 Safety Controls Functions Che...

Page 3: ...OW INSTALLATION GAS PIPING See pages 13 14 ELECTRICAL CONNECTIONS See page 16 RETURN AIR See pages 14 15 VENTING See pages 10 12 and VentingTables SUPPLY AIR See pages 14 15 VENTILATION COMBUSTION AIR...

Page 4: ...ATION RETURN AIR See pages 14 15 VENTING See pages 10 12 andVentingTables ELECTRICAL CONNECTIONS See page 16 SPECIAL BASE See page 6 SUPPLY AIR See pages 14 15 GAS SUPPLY See pages 13 14 COMBUSTION VE...

Page 5: ...are available from National Fire Protection Association Inc Batterymarch Park Quincy MA 02269 LOCATION Donotinstallthisfurnaceinamobilehome Thefurnacedesignedonlyforinstallationinbuildingsconstructed...

Page 6: ...WHEN THE FURNACE IS INSTALLED WITH SIDE AIR RETURN DUCTS FAILURE TO LEAVE THIS BASE PLATE INSTALLED COULD CAUSE PRODUCTS OF COMBUSTION TO BE CIRCULATED INTO LIVING SPACE AND CREATE POTENTIALLY HAZARDO...

Page 7: ...nnectthePowerwirestoVentBlower StackOvertemp wires and Pressure Switch tube leading to Vent Blower Step 4 Remove the three screws item 3 which secure the Vent Blower item 4 to the Heat Shield item 5 o...

Page 8: ...combustionandventila tionair Thefollowing Figure1throughFigure3 outlinethe minimum combustion ventilation air this furnace and any additional gas fired equipment require when installed in a confined a...

Page 9: ...refer to Figure 3 3 The combustion and ventilation air openings must be of equal size and sized appropriately Use the table below as a guide TOTAL 1000 BTUH SQ INCH 2000 BTUH SQ INCH 4000 BTUH SQ INC...

Page 10: ...sed to change from a vertical run to a horizontal run should be type DWV long radius to provide the correct slope in horizontal run If other types are used then 2 45 degree elbows should be used in pl...

Page 11: ...t for proper fit Wipe socket and pipe with cleaner primer Apply a generous coat of primer to connecting areas DO NOT ALLOW PRIMER TO DRY BEFORE APPLYING CEMENT Apply a thin coat of cement in the socke...

Page 12: ...r expected snow level c If adjacent to a public walkway the vent termination must be a minimum of 7 feet above the walkway d Avoid area where condensate drainage may be a problem such as flower beds p...

Page 13: ...ng use a soap and water solution or other approved method DO NOT USE AN OPEN FLAME CONNECTGASSERVICEfrommetertocontrolassembly Seepreviousdrawingfortypicalhook up AGROUND JOINT UNIONMUSTBEINSTALLED EX...

Page 14: ...INES WHICH HAVE PREVIOUSLY SERVICED ANOTHER APPLIANCE CIRCULATING SUPPLY AIR AND RETURN AIR The circulating air return may be taken from 1 outside the building 2 return ducts from several rooms 3 cent...

Page 15: ...INGS IN THE CLOSET DOOR AND THE CIRCULATING AIR OPENINGS MUST BE SEPARATED AN ADEQUATE DISTANCE TO PREVENT THE CIRCULATING AIR FROM INTERFERING WITH THE NATURAL FLOW OF VENTILATION AIR FAILURE TO PREV...

Page 16: ...quipment in polarity sensitive The neutral ground connection must be connected to the equipment white power connector Failure to observe this practice will result in no flame sensing ability THERMOSTA...

Page 17: ...m the table below resulting in the furnace input being reduced at a rate of 4 for each 1000 feet above sea level U S only ALTITUDE BURNER ORIFICE NATURAL GAS 0 2000 45 3000 47 4000 47 5000 47 6000 48...

Page 18: ...h the exception of pilot burners 5 Place the furnace into operation 6 Adjust inlet pressure to obtain a pressure range between 5 and 7 W C 7 After 15 minutes of furnace operation time meter with an ac...

Page 19: ...tem occurs DO NOT tamper with or bypass this switch For more details of the venting installation see the section titled VENTING To check this switch remove the hose from the vent motor with the burner...

Page 20: ...zed The main valve is opened after the ignitor has been glowing for about 17 seconds If main burner flame is detected by the flame sensor see flame sensor section the burners will continue operation U...

Page 21: ...ace design rise range the blower speed must be decreased a lower motor speed Prior to making any motor speed changes allow the furnace adequate time to cool down and turn off electric supply to the ap...

Page 22: ...r assembly 11 Remove the vent blower heat shield and flue collector box 12 Withastiffwirebrushonaflexiblehandleremoveanyloosescalefromtheheatexchanger bothflueopeningandburner opening Use a 1 2 diamet...

Page 23: ...if service is to be performed 3 Remove control access panel OPERATING INSTRUCTIONS 4 Turn gas control knob clockwise to OFF Do not force 5 Replace control access panel FOR YOUR SAFETY READ BEFORE OPE...

Page 24: ...rner flame The ignitor will de energize about 7 to 9 seconds If the flame sensor does not detect the presence of main burner flame the gas valve will close and steps 6 through 9 will be repeated for a...

Page 25: ...ARMS UP GAS VALVE OPENS FLAME SENSED IGNITOR DEACTIVATES VENTER OFF BLOWER OFF BLWR STARTS HTG SPEED BLOWER OFF BLOWER STARTS ON COOLING SPEED CONTACTOR OPENS GAS VALVE OFF VENT MOTOR STARTS TSAT CALL...

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