Inspecting Burner; Cleaning And Maintenance; Pilot Flame Pattern; Burner Flame Pattern - Comfort Glow CGP20TB Owner's Operation And Installation Manual

INSPECTING
BURNER
Check pilot flame pattern and burner flame
pattern often.

PILOT FLAME PATTERN

Figure 19 shows a correct pilot flame pattern.
Figure 20 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 heater will shut down.
If pilot flame pattern is incorrect, as shown
in Figure 20
• turn heater off (see To Turn Off Gas to
Appliance, page 12)
• see Troubleshooting, pages 14 through 16
Thermocouple
Figure 19 - Correct Pilot Flame Pattern
Thermocouple
Figure 20 - Incorrect Pilot Flame Pattern

BURNER FLAME PATTERN

Figure 21 shows a correct burner flame
pattern. Figure 22 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-
duce increased levels of carbon
monoxide. If burner flame pattern
shows yellow tipping, follow in-
structions at bottom of this page.
104332
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 22
• turn heater off (see To Turn Off Gas to
Appliance, page 12)
• see Troubleshooting, pages 14 through 16
Figure 21 - Correct Burner Flame Pattern
Pilot Burner
Figure 22 - Incorrect Burner Flame Pattern
CLEANING AND
MAINTENANCE
Pilot Burner
WARNING: Turn off heater
and let cool before cleaning.
CAUTION: You must keep
control areas, burner, and circu-
lating air passageways of heater
clean. Inspect these areas of
heater before each use. Have
heater inspected yearly by a quali-
fied service person. Heater may
need more frequent cleaning due
to excessive lint from carpeting,
bedding material, pet hair, etc.
ODS/PILOT AND BURNER
• Use a vacuum cleaner, pressurized air,
or small, soft bristled brush to clean.
OWNER'S MANUAL
CLEANING BURNER
PILOT AIR INLET HOLE
We recommend that you clean the unit ev-
ery 2,500 hours of operation or every three
months.
We also recommend that you keep the burner
tube and pilot assembly clean and free of dust
and dirt. To clean these parts we recommend
using compressed air no greater than 30 PSI.
Your local computer store, hardware store, or
home center may carry compressed air in a
can. You can use a vacuum cleaner in the
blow position. If using compressed air in a
can, please follow the directions on the can.
If you don't follow directions on the can, you
1/2 GLASS HEIGHT
could damage the pilot assembly.
1.
Yellow Tipping
2.
3.
1/2 GLASS HEIGHT
Clean the pilot assembly also. A yellow tip on
the pilot flame indicates dust and dirt in the pilot
assembly. There is a small pilot air inlet hole
about two inches from where the pilot flame
comes out of the pilot assembly (see Figure 23).
With the unit off, lightly blow air through the air
inlet hole. You may blow through a drinking
straw if compressed air is not available.
Figure 23 - Pilot Inlet Air Hole
CABINET
Air Passageways
• Use a vacuum cleaner or pressurized air
Exterior
• Use a soft cloth dampened with a mild
13
Shut off the unit, including the pilot.
Allow the unit to cool for at least thirty
minutes.
Inspect burner, pilot for dust and dirt.
Blow air through the ports/slots and
holes in the burner.
Pilot Air Inlet
Hole
Pilot Assembly
to clean.
soap and water mixture. Wipe the cabi-
net to remove dust.