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3
Step 8 — Remove lockout tag and turn on the electrical supply
to unit.
Step 9 — Open the external gas pipings manual shut off valve
located outside the unit.
Step 10 — Set room thermostat temperature selector slightly
above room temperature and set system switch to HEAT position
to start the unit. The induced--draft combustion air fan will start.
Main burners light within 30 seconds. Indoor blower will start
within a few seconds of main gas ignition.
Step 11 — Set the temperature selector on room thermostat to
desired setting.
HEAT
EXCHANGER
SECTION
IGC BOARD
(HIDDEN)
COMBUSTION
FAN HOUSING
MAIN BURNER
SECTION
INDUCED
DRAFT
MOTOR
MAIN GAS
VALVE
C07259
Fig. 1 -- Typical Gas Heating Section
FIRE, EXPLOSION HAZARD
Failure to follow this warning could result in personal injury,
death, and/or property damage.
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.
!
WARNING
TO LIGHT UNIT
(UNITS WITH COMFORTLINK™
CONTROL)
FIRE, EXPLOSION HAZARD
Failure to follow this warning could result in personal injury,
death, and/or property damage.
1. Do not turn off the electrical power to unit without first
turning off the gas supply and apply lockout tags.
2. Before attempting to start the gas heating section, familiarize
yourself with all the procedures that must be followed.
3. Never attempt to manually light the burners on the unit with
a match, lighter, or any other flame. If the electric sparking
device fails to light the burners, refer to the shutdown
procedures, then call your dealer as soon as possible.
!
DANGER