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101870
OWNER’S MANUAL
Check pilot flame pattern and burner flame
pattern often.
PILOT FLAME PATTERN
Figure 17 shows a correct pilot flame pat-
tern. Figure 18 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.
INSPECTING
BURNER
GRH/OV 009GOOD PILOT
Thermocouple
Pilot Burner
GRH/OV 010BAD PILOT
Pilot Burner
Thermocouple
Figure 17 - Correct Pilot Flame Pattern
Figure 18 - Incorrect Pilot Flame Pattern
If pilot flame pattern is incorrect, as shown
in Figure 18
• turn heater off (see To Turn Off Gas
to Appliance, page 10)
• see Troubleshooting, pages 12
through 14
1/2 GLASS HEIGHT
INCORRECT FLAME PATTERN
AT HIGH POSITION
NOTICE: Do not mistake orange
flames with yellow tipping. Dust
or other fine particles enter the
heater and burn causing brief
patches of orange flame.
BURNER FLAME PATTERN
Figure 19 shows a correct burner flame
pattern. Figure 20 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 pat-
tern shows yellow tipping, follow
instructions at bottom of this
page.
If burner flame pattern is incorrect, as shown
in Figure 20
• turn heater off (see To Turn Off Gas
to Appliance, page 10)
• see Troubleshooting, pages 12
through 14
CORRECT FLAME PATTERN
AT HIGH POSITION
1/2 GLASS HEIGHT
Yellow
Tipping
(Model CGN6 will be lower due to
lower input rating)
Figure 20 - Incorrect Burner Flame Pattern
Figure 19 - Correct Burner Flame Pattern
(Model
CGN10A)
CLEANING AND
MAINTENANCE
ODS/PILOT AND BURNER
ORIFICE
• Use a vacuum cleaner, pressurized
air, or small, soft bristled brush to
clean.
CABINET
Air Passageways
• Use a vacuum cleaner or pressurized
air to clean.
Exterior
• Use a soft cloth dampened with a
mild soap and water mixture. Wipe
the cabinet to remove dust.
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, etc.