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Furnace Cabinet
Check that all furnace cabinet sealing components are in
place (plugs, grommets, gaskets). NOTE: Seal all bottom
panel return duct connections and perforations with duct
sealant compound or other suitable method to prevent
air leakage. For optimal performance, verify that all door
gaskets are correctly in place and replace as needed to
avoid air leakage.
Drain Trap Priming
Prime the drain trap before furnace startup. To prime, fill
both sides of the drain trap with water. This step ensures
proper furnace drainage upon startup and prohibits the
possibility of flue gases escaping through the drain system.
Furnace Operation
Purge gas lines of air prior to startup. Be sure not purge
lines into an enclosed burner compartment. Follow NFPA
54, National Fuel Gas Code for proper purging methods.
In Canada, follow approved purging methods in CAN/CSA
B149.1-15.
Check for leaks using an approved chloride-free soap and
water solution, an electronic combustible gas detector,
or other approved method. Verify proper operation of all
required kits (high altitude, ect.).
Furnace Startup
1. Close the manual gas shutoff valve external to the
furnace.
2. Turn off the electrical power to the furnace.
3. Set the room thermostat to the lowest possible
setting.
4. Remove the burner compartment door.
NOTE: The ignition device in this furnace lights
automatically. Do not try to light the burner by
hand.
5. Move the furnace gas valve manual control to the
OFF position.
6. Wait five minutes, then smell for gas. Be sure to check
near the floor as some types of gas are heavier than
air.
7. If you smell gas after five minutes, immediately follow
the safety instructions in the Safety Considerations
on page 3 of this manual. If you do not smell gas after
five minutes, move the furnace gas valve manual
control to the ON position.
8. Replace the burner compartment door.
9. Open the manual gas shutoff valve external to the
furnace.
10. Turn on the electrical power to the furnace.
11. Adjust the thermostat to a setting above room
temperature.
12. After the burners light, set the thermostat to the
desired temperature.
Furnace Shutdown
1. Set the thermostat to the lowest setting.
The integrated control will close the gas valve and
extinguish flame. Following a 15 second delay, the
induced draft blower will be de-energized. After the
fan OFF delay time expires, the blower de-energizes.
2. Remove the burner compartment door and move the
furnace gas valve manual control to the OFF position.
3. Close the manual gas shutoff valve external to the
furnace.
4. Replace the burner compartment door.
GAS SUPPLY AND PIPING
To prevent unreliable operation or equipment damage,
the gas manifold pressure must be as specified on the unit
rating plate. Only minor adjustments should be made by
adjusting the gas valve pressure regulator.
Possible property damage, personal injury, or death may
occur if the correct conversion kits are not installed. The
appropriate kits must be applied to ensure safe and proper
furnace operation. All conversions must be preformed by a
qualified installer or service agency.
INLET GAS SUPPLY PRESSURE
Natural Gas
Minimum: 4.5" W.C. Maximum: 10.0" W.C.
Inlet gas supply pressures must be maintained within the
ranges specified in the table 7. The supply pressure must
be constant and available with all other household gas fired
appliances operating. The minimum gas supply pressure
must be maintained to prevent unreliable ignition. The
maximum must not be exceeded to prevent unit overfiring.
27
CAUTION
WARNING
Table 7
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