Thermo Pride GMC-85 Installation And Service Manual page 3

All installations and services must be performed by qualified service personnel.
If you do not follow these instructions exactly, a fire or explosion may result
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causing personal injury, loss of life or property damage.
NEVER use gasoline or a mixture of oil and gasoline to start the burner or
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furnace.
HAZARD OF ASPHYXIATION: Negative pressure inside the closet with closet
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door closed and the furnace blower operating shall be no more negative than minus 0.05 inch
water column.
Do not obstruct any return air openings, including the return grille on the
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furnace. To do so may cause the furnace to activate the high limit and shut down or it may
cause asphyxiation.
Because of the potential of odorant fade, a gas leak may not be detected by smell.
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If this furnace is installed below grade, contact your gas supplier for a gas detector.
All gas pipe connections must be leak tested using a strong soap and water
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solution (with the gas turned on). Any leaks must be repaired immediately after turning off the
gas supply. A final test for gas leakage must be made after purging the gas line.
DO NOT wet electronic components during the leak test. Wetting electronic
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components may damage circuitry and cause a hazardous situation. Dry moisture from all
leads and terminals if wetting occurs. Wait at least 24 hours for the circuit to fully dry before
energizing the system.
The furnace and its gas valve must be disconnected from the gas supply during
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pressure testing of the gas supply system at pressures in excess of 1/2 PSIG or 13.9 inches
W.G. The furnace can be isolated from the gas supply by closing its manual shut off valve at
test pressures equal to or less than 1/2 PSIG or 13.9 inches W.G.
Copper and brass tubing and fittings (except tin lined) shall not be used if the gas
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contains more than a trace (0.3 grains per 100 cubic ft.) of hydrogen sulfide gas. Check with
your gas supplier.
All local codes and ordinances take precedence with regard to tank and oil lines.
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All lines must have shutoff valves, a good pipe joint compound approved for use with oil on all
pipe threads, no kinks, no sharp bends and be properly tested for leaks. Flare fittings are
recommended for tubing.
Do not use motor oil or any fuel other than No. 1 or No. 2 fuel oil in this furnace.
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