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108117-01J
For more information, visit www.desatech.com
For more information, visit www.desatech.com
25
25
MANUAL LIGHTING
INSTRUCTIONS FOR
ELECTRICAL POWER OUTAGE
WARNING: You must operate this heater with the
fireplace screen in place. Make sure fireplace screen
is in place before running heater.
NOTICE: During initial operation of new heater, burning
logs will give off a paper-burning smell. Open damper or
window to vent smell. This will only last a few hours.
Because this fireplace has an electronic ignition system, in the
event there is a loss of power, it will be necessary to manually
light the pilot with the piezo ignitor. After the pilot is lit, the
main burner will light automatically.
1. Follow steps 1 through 3 under Normal Lighting Instructions,
pages 24.
2. Set manual ignition bypass switch on control panel to ON
position (manual ignition position). See Figure 54.
3. The pilot is attached to the rear of the front burner. You
will be able to see the pilot and spark electrode without
removing the screen or logs.
4. Place the magnetic manual override handle, provided with
this unit, on the end of the gas valve stem (see Figure 54).
5. Turn the override handle fully counterclockwise
to
the PILOT position. The handle will not stop but will begin
to slip when you have fully turned to the PILOT position.
6. While holding the valve handle in the PILOT position, press
and release piezo ignitor button (see Figure 54). This will light
the pilot. If needed, keep pressing ignitor button until pilot lights.
7. When pilot flame is lit, hold manual override handle until
thermocouple heats (approximately 5 to 15 seconds). If pi-
lot goes out, repeat process. If several attempts to light the
pilot fail, contact a qualified service person or gas supplier
for repairs.
8. When thermocouple is heated, release override handle. The
main burner will immediately light on high flame. Adjust
flame size by turning override handle.
OPERATING FIREPLACE
Manual Lighting Instructions for Electrical Power Outage
To Turn Off Gas To Appliance
Optional Blower Operation
OPERATING FIREPLACE
Continued
ON
OFF
HI
LO
MANUAL
IGNITION
Figure 54 - Control Locations
Manual Ignition
Bypass Switch
(Down is ON)
Magnetic Manual
Override Handle
ON/OFF
Button
HI/LO
Button
Piezo Ignitor
Wall
Switch
Gas Valve
LED
LED
Locate the blower switch by opening lower louver on fireplace.
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 sufficient in-
crease in firebox 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 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
TO TURN OFF GAS
TO APPLIANCE
Shutting Off Heater When Manually Lit
Set manual ignition bypass switch on control panel to OFF
(automatic ignition position). This will cause the controls to shut
down the fireplace.