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Step 8 — Turn on the electrical supply to unit.
Step 9 — Open the manual gas valve.
Step 10 — Set room thermostat selector slightly above
room temperature to start unit. The induced-draft combus-
tion air fan will start. Main gas valve will open and main
burners should ignite within 5 seconds. If the burners do not
light, there is a 22-second delay before another 5-second try.
If the burner still does not light, the time delay is repeated.
If the burner does not light within 15 minutes, there is a lock-
out. If burners still do not light, call for service.
Step 11 — Set the temperature selector on room thermo-
stat to desired setting.
If the main burners fail to light, or the blower fails to
come on, shut down gas heating section and call your
dealer for service. Failure to follow these requirements
could result in serious personal injury.
TO SHUT UNIT OFF
1. Do not turn off the electrical power to unit without
first turning off the gas supply.
2. Never attempt to manually light the main burners on
unit with a match, lighter, or any other flame. If the
electric sparking device fails to light the main burn-
ers, refer to the following shutdown procedures, then
call your dealer as soon as possible.
Failure to follow these procedures can result in
serious fire or personal injury.
Refer to Fig. 3 while proceeding with the following steps.
Step 1 — Set room thermostat to lowest temperature set-
ting and set SYSTEM switch to OFF position.
Step 2 — Close the external manual gas valve.
Step 3 — Turn off the electrical power supply to unit.
Step 4 — Remove the burner access panel.
Step 5 — Move the control on the gas valve to the OFF
position.
Step 6 — Replace the burner access panel.
Step 7 — If unit is being shut down because of a mal-
function, call your dealer as soon as possible.
If unit is being shut down because the heating season has
ended, restore electrical power to the unit to ensure opera-
tion of the cooling system during the cooling season.
Should overheating occur, or the gas supply fail to shut
off, shut off the manual gas valve to the unit before shutting
off the electrical supply.
Do not use this unit if any part has been under water. Im-
mediately call a qualified service technician to inspect the
unit and to replace any part of the control system and any
gas control which has been under water.
MAINTAINING YOUR UNIT
All maintenance should be handled by skilled, experi-
enced personnel. Your dealer can help you establish a stand-
ard procedure.
For your safety, keep the area around the unit clear and
free of combustible materials, gasoline, and other flam-
mable liquids and vapors.
To ensure proper functioning of the unit, flow of combus-
tion and ventilating air must not be prevented from reaching
the unit. Clearance of at least 3 ft on size 004-007 units and
4 ft on size 008-014 units on the flue and condenser sides
and 6 in. on all other sides is required. A clearance of 5 ft is
required above the condenser discharge.
ROUTINE MAINTENANCE AND CARE
FOR THE EQUIPMENT OWNER
Consider the following information before maintaining
or servicing equipment:
1. TURN OFF GAS SUPPLY AND THEN ELECTRI-
CAL POWER TO YOUR UNIT BEFORE SERVIC-
ING OR PERFORMING MAINTENANCE.
2. Do not turn off electrical power to this unit without
first turning off the gas supply.
3. When removing access panels or performing main-
tenance functions inside your unit, be aware of sharp
sheet metal parts and screws. Although special care
has been taken to reduce sharp edges inside the unit,
be extremely careful when handling parts or reach-
ing into the unit.
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