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107157
OWNER’S MANUAL
For more information, visit www.desatech.com
OPERATING
FIREPLACE
Continued
INSPECTING
BURNERS
Check pilot flame pattern and burner flame
patterns often.
PILOT FLAME PATTERN
Figure 31 shows a correct pilot flame pat-
tern. Figure 32 shows an incorrect pilot
flame pattern. The incorrect pilot flame is
not touching the thermocouple. This will
cause the thermocouple to cool. When the
thermocouple cools, the fireplace will shut
down.
Thermocouple
Pilot Burner
Figure 31 - Correct Pilot Flame Pattern
Pilot Burner
Thermocouple
Figure 32 - Incorrect Pilot Flame Pattern
If pilot flame pattern is incorrect, as shown
in Figure 32
• turn fireplace off (see To Turn Off Gas to
Appliance, page 15 [Thermostat-con-
trolled models] or page 16 [Manually-
controlled models])
• see Troubleshooting, pages 19 through 21
Blower Kit Model GA3700T
Series
Locate the blower switch by opening the
lower louver on fireplace. Blower switch
is located at lower left inside louver door.
The GA3700TA thermostat-controlled
blower has a variable speed control with
an ON/OFF switch. The blower will start
when the thermostat senses a sufficient
increase in firebox temperature.
IMPORTANT:
Light your gas appliance
with the blower off.
Note for GA3700TA:
If you are using
GA3700TA blower, your gas 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.
Note:
Periodically check the louvers of
the firebox and remove any dust, dirt, or
other obstructions.
Follow installation instructions included
with the blower accessory.
Locate the blower switch by opening lower
louver on fireplace. Blower switch is lo-
cated at lower left inside louver door.
This thermostat-controlled blower has a
variable speed control with an ON/OFF
switch. The blower will start when the
thermostat senses a sufficient increase in
firebox temperature.
Note:
It is safe to operate fireplace with
blower turned off. However, the blower helps
distribute heated air from the fireplace.
MODEL VSGF28NVA
Blower Kit Model GA3700 Series
This optional non-thermostat blower kit
features a variable control which allows
you to select the speed you desire. After
about 15 minutes, turn the blower on to
deliver heated air at the top louvers. Fol-
low the installation instructions on pages
8 and 9 of this manual.
IMPORTANT:
Light your gas appliance
with the blower off.
Note:
Periodically check the louvers of
the firebox and remove any dust, dirt, or
other obstructions.
BLOWER
OPERATION
WARNING: This fireplace has
a three-prong, grounded electri-
cal plug. This plug helps protect
you against electrical shock. Only
connect plug to a properly
grounded, three-prong recep-
tacle. Do not cut or remove the
grounding prong from this plug.
MODEL VSGF28NTC