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105647
UNVENTED NATURAL GAS FIREPLACE INSERT
DESA INTERNATIONAL
For more information, visit www.desatech.com
Locate the blower switch by opening lower
louver on fireplace insert. Blower switch
is located at lower left inside louver door.
This thermostat-controlled blower has three
settings: ON, OFF, and AUTO. In the ON
position, the blower will operate constantly.
In the OFF position, the blower will not
operate. In the AUTO position, the blower
will start when the thermostat senses a
sufficient increase in firebox temperature.
OPTIONAL BLOWER
OPERATION
OPERATING
FIREPLACE INSERT
Continued
Figure 35 - Correct Pilot Flame Pattern
Pilot Burner
Thermocouple
Figure 36 - Incorrect Pilot Flame Pattern
Check pilot flame pattern and burner flame
patterns often.
PILOT FLAME PATTERN
Figure 35 shows a correct pilot flame pat-
tern. Figure 36 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 36
• turn heater off (see To Turn Off Gas to
Appliance, page 15)
•
see Troubleshooting, pages 17 through 19
Pilot Burner
Thermocouple
INSPECTING
BURNERS
GHRCTA Series Operation:
2b. Press the AUTO/ON/OFF button on the
hand-held remote control (see Figure
34, page 15). The lights to the left of the
button will show AUTO, ON, or OFF.
• In the ON mode, the burners will
ignite. The heater is in manual
mode when ON is lit.
• In the AUTO mode, the thermostat
in the hand-held remote unit con-
trols the room temperature. To in-
crease the room temperature, press
the top arrow of the TEMP button.
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 engineered to
take an air temperature sample ev-
ery 5.5 minutes in the auto mode.
It will not respond immediately to
the temperature setting being
turned up or down.
IMPORTANT:
The hand-held re-
mote control unit must be near the
heater. Do not keep the hand-held
remote control unit too close to the
heater. The thermostat on the hand-
held remote control unit will heat up
too quickly and turn the heater 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 control knob on the
heater to the OFF position.
BURNER PRIMARY AIR
HOLES
Air is drawn into the burner through the
holes in the fitting at the burner entrance.
These holes may become blocked with dust
or lint. Periodically inspect these holes for
any blockage and clean if needed. Blocked
air holes will create soot.
MAIN BURNER
Periodically inspect all burner flame holes
with the heater running. All slotted burner
flame holes should be open with yellow
flame present. All round burner flame holes
should be open with a small blue flame
present. Some burner flame holes may be-
come blocked by debris or rust, with no
flame present. If so, turn off heater and let
cool. Either remove blockage or replace
burner. Blocked burner flame holes will
create soot.
BURNER FLAME PATTERN
Figure 37 shows a correct burner flame pat-
tern. Figure 38 shows an incorrect burner
flame pattern. If burner flame pattern is
incorrect,
• turn heater off (see To Turn Off Gas to
Appliance, page 15)
• see Troubleshooting, pages 17 through 19
Figure 37 - Correct Flame Pattern with
Control Knob Set to High Flame.
Figure 38 - Incorrect Flame Pattern with
Control Knob Set to High Flame
Approx. 3-6" Above
Top of Logs
More Than 8"
Above Top of Logs
Note:
Your gas logs and thermostat
blower will not turn on and off at the
same time. The fireplace insert may run
for several minutes before the blower
turns on. After the heater modulates to
the pilot position, the blower will con-
tinue to run. The blower will shut off after
the firebox temperature decreases.
Note:
It is safe to operate fireplace insert
with blower turned off. However, the
blower helps distribute heated air from
the fireplace insert.