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See unit nameplate for manufacturer and address. 504,502M 8/2002 Supersedes 10/2001 GCS16-072, 090, AWARNING 150, 180, (6, 7-1/2, 10, 12-1/2, 15, 20 TON) ROOFTOP UNITS GCS16-090, 120, 150 SHOWN READ ALL INSTRUCTIONS IN THIS MANUAL TeChnical AND RETAIN FOR FUTURE REFERENCE blications Lithe U.S.A.
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EVAPORATOR COIL FILTERS (4) HEAT EXCHANGERTUBES CONDENSER (2 ON -120 & -150 UNITS) COMBUSTION INDUCER CONDENSER COIL FLUE BOX COVER CONTROLBOX_ GAS VALVE BURNERS SIDE POWER ENTRY (-072, -090 UNITS) CONDENSATE DRAIN BOTTOM POWER ENTRY BLOWER MOTOR (Requires additional field-installed kit; COMPRESSORS refer to "Electrical Connections"...
,&,WARNING , ,WARNING Keep gas heat section clear and free of combustible materials, gasoline and other flammable vapors and ,&IMPORTANT liquids, Inspect return air duct to ensure duct is sealed to the curb external to the unit, Inspect physical support of unit to guarantee that it is sound without sagging, cracks, or gaps around base, A, WARNING On downflow units, seal between base and support...
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7- Turn the knob on the gas valve counterclockwise41_ ,WARNING to "ON". Do not force. 8- Close or replace the heat section access panel. 9- Turn on all electrical power to furnace. 10- Set thermostat to desired setting. This unit is equipped with an automatic spark ignition 11- The combustion air inducer will start.
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Turning Off Gas to Furnace If using an electromechanical thermostat, set to the &CAUTION lowest setting. Before performing any service, turn off all electrical power to the furnace. 3- Open or remove the heat section access panel. To maintain efficiency and longevity, your equipment must be serviced yearly by a qualified service technician.
TABLE 1 To keep your heating and cooling system in peak FILTER SIZE operating condition year after year, contact a qualified service technician about a regular maintenance program. Unit Qty. Filter Size - inches (mm) 072, 090 FILTER REMOVAL 16 X 20 X 2 (406 X 508 X 51) (Four Filters On -072, 090, 120 &...
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