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111245-01C28
OPERATING FIREPLACE
Continued
7. When pilot ame is lit, hold manual over-
ride handle until thermocouple heats (ap-
proximately 5 to 15 seconds). If pilot goes
out, repeat process. If several attempts
to light the pilot fail, contact a qualied
service person or gas supplier for repairs.
8. When thermocouple is heated, release
override handle. The main burner will im-
mediately light on high ame. Adjust ame
size by turning override handle.
TO TURN OFF GAS
Set manual ignition bypass switch on control panel
to OFF (automatic ignition position). This will
cause the controls to shut down the replace.
Locate the blower switch by opening lower
louver on replace. Blower switch is located at
lower right inside louver door.
The GA3650T/GA3700T Series thermostat-
controlled blower has a variable speed control
with an ON/OFF switch. The blower will start
when the thermostat senses a sufcient increase
in rebox temperature. The GA3700/GA3750
Series variable speed blower also has an
ON/OFF switch built into the variable speed
control.
Note for GA3650T/GA3700T Series Only: If
you are using this series blower, your replace
and blower will not turn on and off at the same
time. The replace may run for several minutes
before the blower turns on. After the heater
modulates to the pilot position, the blower will
continue to run. The blower will shut off after
the rebox temperature decreases.
Note: It is safe to operate replace with blower
turned off. However, the blower helps distribute
heated air from the replace.
Follow installation instructions included with
the blower accessory.
INSPECTING BURNERS
Check pilot ame pattern and burner ame pat-
terns often.
Figure 51 shows a correct pilot ame pattern.
Figure 52 shows an incorrect pilot ame pattern.
The incorrect pilot ame is not properly heating
the thermocouple. When the thermocouple cools,
the heater will shut down.
If pilot ame pattern is incorrect, as shown in
Figure 52
• turn heater off (see To Turn Off Gas to Appli-
ance, page 27 or 28 depending on situation)
• see Troubleshooting, page 30
Note: The pilot ame on natural gas units will
have a slight curve, but ame should be blue and
have no yellow or orange color.
Figure 51 - Correct Pilot Flame Pattern
(Natural Gas Pilot Assembly Shown)
Pilot Burner
Thermocouple
Pilot Burner
Figure 52 - Incorrect Pilot Flame Pattern
(Natural Gas Pilot Assembly Shown)
Periodically inspect all burner ame holes with
the heater running. All slotted burner ame holes
should be open with ame present. All round
burner ame holes should be open with a small
blue flame present. Some burner flame holes
may become blocked by debris or rust, with no
ame present. If so, turn off heater and let cool.
Remove blockage, blocked burner ame holes
may create soot.
Thermocouple