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TO SHUT UNIT OFF
Refer to Fig. 3 while proceeding with the following steps.
Step 1 —
Set room thermostat to lowest temperature setting
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 and
install lockout tag.
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 malfunc-
tion, 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 operation
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. Imme-
diately 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, experienced
personnel. Your dealer can help you establish a standard
procedure.
For your safety, keep the area around the unit clear and free
of combustible materials, gasoline, and other flammable liq-
uids 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:
Do not turn off the electrical power to unit without first
turning off the gas supply.
Failure to follow this procedure can result in serious fire
or personal injury.
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 mainte-
nance 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 reaching
into the unit.
GAS VALVE
Fig. 1A — Gas Valve Location (Sizes 004-007)
Fig. 1B — Gas Valve Location (Sizes 008-014)