109889
For more information, visit www.desatech.com
For more information, visit www.desatech.com
15
15
TO TURN OFF GAS TO APPLIANCE
Shutting Off Heater
1.
Turn control knob clockwise
Clockwise
to the OFF position.
2.
Turn off all electric power to the appliance if service is to
be performed.
Shutting Off Burner Only (pilot stays lit)
Turn control knob clockwise
Clockwise
to the PILOT position.
THERMOSTAT CONTROL
OPERATION
The thermostatic control used on this heater differs from stan-
dard thermostats. Standard thermostats simply turn on and off
the burner. The thermostat used on this heater senses the room
temperature. The thermostat adjusts the amount of gas flow to
the burner. This increases or decreases the burner flame height.
At times the room may exceed the set temperature. If so, the
burner will shut off. The burner will cycle back on when room
temperature drops below the set temperature.
The control knob can be set to any heat level between HI and LO.
Note:
The thermostat sensing bulb measures the temperature of
air near the heater cabinet. This may not always agree with room
temperature (depending on housing construction, installation
location, room size, open air temperatures, etc.). Frequent use of
your heater will let you determine your own comfort levels.
OPERATING HEATER
Continued
MANUAL LIGHTING PROCEDURE
1.
Remove front panel (see Figure 2, page 4).
2.
Follow steps 1 through 5 under Lighting Instructions, page 14.
3.
With control knob pressed in, strike match. Hold match to
pilot until pilot lights.
4.
Keep control knob pressed in for 30 seconds after lighting
pilot. After 30 seconds, release control knob. Now follow
step 8 under Lighting Instructions, page 14.
5.
Replace front panel.
INSPECTING BURNER
Check pilot flame pattern and burner flame pattern often.
PILOT FLAME PATTERN
Figure 26 shows a correct pilot flame pattern. Figure 27 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 heater will shut down.
If pilot flame pattern is incorrect, as shown in Figure 27
• turn heater off (see To Turn Off Gas to Appliance)
• see Troubleshooting, pages 17 through 19
Thermocouple Pilot Burner
Figure 26 - Correct Pilot Flame
Pattern
Pilot Burner
Thermocouple
Figure 27 - Incorrect Pilot Flame
Pattern
BURNER FLAME PATTERN
Figure 28 shows a correct burner flame pattern. Figure 29 shows an
incorrect burner flame pattern. The incorrect burner flame pattern
shows yellow tipping of the flame. It also shows the flame higher
than one inch above the log.
Note:
When using the heater the first time, the flame will be yellow
for approximately one hour until the log cures.
NOTICE: Do not mistake orange flames with yellow
tipping. Dirt or other fine particles enter the heater
and burn causing brief patches of orange flame.
If burner flame pattern is incorrect, as shown in Figure 29
• turn heater off (see To Turn Off Gas to Appliance)
• see Troubleshooting, pages 17 through 19
WARNING: If yellow tipping occurs, your heater
could produce increased levels of carbon monoxide.
If burner flame pattern shows yellow tipping, follow
instructions at bottom of this page.
Figure 28 - Correct Burner Flame Pattern
Figure 29 - Incorrect Burner Flame Pattern
Top of Flame Even
With Top of Log
Yellow Tipping
OPERATING HEATER
To Turn Off Gas To Appliance
Thermostat Control Operation
Manual Lighting Procedure
INSPECTING BURNER
Pilot Flame Pattern
Burner Flame Pattern
