Inspecting Burner - Desa Comfort Glow CGP10TLA Owner's Operation And Installation Manual

VENT-FREE PROPANE/LP GAS HEATER
OPERATING
HEATER
Continued
TO TURN OFF GAS
TO APPLIANCE
Shutting Off Heater
1. Turn control knob clockwise
,F_ 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 _ to
the PILOT position.
THERMOSTAT
CONTROL
OPERATION
The thermostatic control used on these
models differs from standard thermo-
stats. Standard thermostats simply turn
on and off the burner. The thermostat
used on this heater senses the room tern.
perature. The thermostat adjusts the
amount of gas flow to the burner. This
increases or decreases the burner flame
height.A t 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
heater cabinet. This may not always agree
with room temperature (depending on
housing construction, installation loca-
tion, room size, open air temperatures,
etc.). Frequent use of your heater will let
you determine your own comfort levels.
I MANUAL LIGHTING
PROCEDURE
1. Remove front panel (see Figure 10,
page 8).
2. FoUow steps I through 5 under Light-
ing Instructions, page U.
3. With control knob pressed in, strike
match. Hold match to pilot antl/pi-
lot
nights.
4. Keep control knob pressed in for 30
seconds after lighting pilot. After 30
seconds, release control knob.
5. Replace front panel
INSPECTING
BURNER
Check pilot flame pattern and burner flame
pattern often.
PILOT FLAME PATTERN
Figure 18 shows a correct pilot flame pat-
tern, Figure 19 shows an incorrect pilot
flame pattern. The incorrect pilot flame is
not touching the thcrmoeouple. This will
cause the thermocouple to cool. When the
thcrmocoople cools, the heater will shut
down.
If pilot flame pattern is incorrect, as shown
in Figure 19
* turn heater off(see To Turn OffGas to
Appliance, column 1)
• see Troubleshooting, pages 14through 16
PilotBurner
Rgure 18 - Correct Pilot Flame Paffern
PilotBumor
\
BURNER FLAME PATTERN
Figure 20 shows a correct burner flame
pattern. Figure 21 shows an incorrect burner
flame pattern. The incorrect burner flame
pattern shows yellow tipping of the flame. It
also shows the flame higher than 1/2 the
glass panel height.
WARNING: If yellow tipping
occurs, your heater could pro-
duca Increased levels of carbon
monoxide. If burner flame pat-
tern shows yellow tipping, follow
the Instructions below.
NOTICE: Do not mistake orange I
flames with yellow tipping. Dust
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 21
• turn heater off (see To Turn OffGas to
Appliance, eolanan 1)
• seeTroubleshooting, pages 14 through 16
I_ _ GLASS HEIGHT
CORRECT FLAME PATTERN
AT HIGH POntoON
Figure 20 - Correct Burner Flame Pattern
Yellow
Tipping
INCORRECT FLAME PATTERN
AT HIGH PO6mON
Rgure 21 -Incorrect Bumer FlamePaftern
Figure 19. Incorrect Pilot Flame Pattern
12 Ioda_