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110148-01B
For more information, visit www.desatech.com
For more information, visit www.desatech.com
20
Figure 43 - Correct Pilot Flame Pattern
Figure 44 - Incorrect Pilot Flame Pattern
Check pilot flame pattern and burner flame patterns often.
PILOT FLAME PATTERN
Figure 43 shows a correct pilot flame pattern. Figure 44 shows an
incorrect pilot flame pattern. The incorrect pilot flame is not
properly heating the thermocouple. When the thermocouple cools,
the heater will shut down.
If pilot flame pattern is incorrect, as shown in Figure 44
• turn heater off (see To Turn Off Gas to Appliance, page 19)
•
see Troubleshooting, pages 23 through 25
Note:
The pilot flame on a natural gas units will have a slight curve,
but flame should be blue and have no yellow or orange color.
INSPECTING BURNERS
Pilot Burner
Thermocouple
Thermocouple
Pilot Burner
Thermocouple
Pilot Burner
Thermocouple
OPERATING FIREPLACE
Optional Remote Operation (Cont.)
Optional Blower Operation
INSPECTING BURNERS
Pilot Flame Pattern
GHRC Series Operation:
2a. Press the ON/OFF button to turn the burner on and off.
When turning burner off, the pilot will remain lit.
GHRCTA Series Operation:
2b. Press the AUTO/ON/OFF button on the hand-held remote
control (see Figure 42). The lights to the left of the button
will show AUTO, ON, or OFF.
• In the ON mode, the burner will ignite. The heater is in
manual mode when ON is lit.
• In the AUTO mode, the thermostat in the hand-held re-
mote unit controls the room temperature. To increase the
room temperature, press the top arrow of the TEMP but-
ton. To lower the room temperature, press the bottom
arrow of the TEMP button. At higher settings the heater
will run longer.
IMPORTANT:
This remote control has been specially en-
gineered to take an air temperature sample every minute
in the auto mode. It will not respond immediately to the
temperature setting being turned up or down.
IMPORTANT:
The hand-held remote control unit must
be near the fireplace. Do not keep the hand-held remote
control unit too close to the fireplace. The thermostat on
the hand-held remote control unit will heat up too quickly
and turn the fireplace off.
3. To turn the burner off, press the AUTO/ON/OFF button
until OFF lights. The pilot will remain lit.
IMPORTANT:
To turn the pilot off, manually turn the con-
trol knob on the fireplace to the OFF position.
OPERATING FIREPLACE
Continued
Locate the blower switch by opening lower louver on fireplace.
Blower switch is located at lower right inside louver door.
The GA3700T Series thermostat-controlled blower has a vari-
able speed control with an ON/OFF switch. The blower will
start when the thermostat senses a sufficient increase in firebox
temperature. The GA3700 variable speed blower also has an
ON/OFF switch built into the variable speed control.
Note for GA3700T Series Only:
If you are using GA3700T
blower, your fireplace and blower will not turn on and off at the
same time. The fireplace 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
firebox temperature decreases.
Note:
It is safe to operate fireplace with blower turned off. However,
the blower helps distribute heated air from the fireplace.
Follow installation instructions included with the blower accessory.
OPTIONAL BLOWER
OPERATION
Figure 42 - Thermostat Hand-Held Remote Control Unit
Selections (GHRCTA Series Only)
Shows Temperature
Setting
Increases Room
Temperature in
AUTO Mode
Decreases Room
Temperature in
AUTO Mode
Turns Burner On or
Off and Allows You
to Choose the Auto
Setting
The Log Heater will
Automatically Cycle
between Pilot and
the Heat Setting that
has been Selected
Pilot Burner
Natural Gas PilotPropane/LP Gas Pilot
Natural Gas PilotPropane/LP Gas Pilot