Inspecting Burner - Desa Comfort Glow CGCF26TNA Owner's Operation And Installation Manual

OPERATING
FIREPLACE
Continued
TO TURN OFF GAS
TO APPLIANCE
Shutting Off Fireplace
1. Turn control knob clockwise
to the OFF position.
2. Turn off all electric power to the ap-
pliance if service is to be performed.
Shutting Off Burner Only (pilot
stays lit)
Turn control knob clockwise
the PILOT position.
THERMOSTAT
CONTROL OPERATION
The thermostatic control used on this fire-
place differs from standard thermostats.
Standard thermostats simply turn on and
off the burner. The thermostat used on
this fireplace senses the room tempera-
ture. 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 mea-
sures the temperature of air near the fire-
place 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 fireplace will let you
determine your own comfort levels.
MANUAL LIGHTING
PROCEDURE
1. Follow steps 1 through 5 under
Lighting Instructions, page 14.
2. With control knob pressed in, strike
match. Hold match to pilot until pi-
lot lights.
3. Keep control knob pressed in for 30
seconds after lighting pilot. After 30
seconds, release control knob. Now
follow step 8, page 14.
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INSPECTING
BURNER
Check pilot flame pattern and burner flame
pattern often.
PILOT FLAME PATTERN
Figure 23 shows a correct pilot flame pattern.
Figure 24 shows an incorrect pilot flame
pattern. The incorrect pilot flame is not touch-
ing the thermocouple. This will cause the
thermocouple to cool. When the thermo-
couple cools, the fireplace will shut down.
If pilot flame pattern is incorrect, as
shown in Figure 24
to • turn fireplace off (see To Turn Off Gas to
Appliance)
• see Troubleshooting, pages 16 through 18
Thermocouple
Figure 23 - Correct Pilot Flame Pattern
(Actual Pilot May Vary From Illustration)
Thermocouple
Figure 24 - Incorrect Pilot Flame Pattern
(Actual Pilot May Vary From Illustration)
15
OWNER'S MANUAL
BURNER FLAME PATTERN
Figure 25 shows a correct burner flame
pattern. Figure 26 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 fireplace the first
time, the flame will be yellow for approxi-
mately one hour until the log cures.
WARNING: If yellow tipping
occurs, your fireplace could pro-
duce increased levels of carbon
monoxide. If burner flame pattern
shows yellow tipping, follow in-
structions at bottom of this page.
NOTICE: Do not mistake orange
flames with yellow tipping. Dirt
Pilot Burner
or other fine particles enter the
fireplace and burn causing brief
patches of orange flame.
If burner flame pattern is incorrect, as shown
in Figure 26
• turn fireplace off (see To Turn Off Gas to
Appliance)
• see Troubleshooting, pages 16 through 18
Top of Flame About
One Inch Above Logs
Pilot Burner
Figure 25 - Correct Burner Flame Pattern
Yellow Tipping
Figure 26 - Incorrect Burner Flame Pattern