Inspecting Burners - Comfort Glow CG3324NT Owner's Operation And Installation Manual

INSPECTING
BURNERS
22
Check pilot flame pattern and burner flame patterns often.
PILOT FLAME PATTERN
Figure 21 shows a correct pilot flame pattern. Figure 22 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.
Thermocouple
Figure 21 - Correct Pilot
Flame Pattern
If pilot flame pattern is incorrect, as shown in Figure 22
• turn heater off (see To Turn Off Gas to Appliance, page 21)
• see Troubleshooting, pages 25 through 27
FRONT BURNER FLAME PATTERN
Figure 23 shows correct front burner flame pattern. Figure 24 shows incorrect front burner
flame pattern. The incorrect burner flame pattern shows yellow tipping at top of blue flame.
If yellow tipping occurs, your heater could produce increased levels
of carbon monoxide. If front burner flame pattern shows yellow
tipping, follow instructions at bottom of this page. Yellow flame on rear
burner is normal.
Do not mistake orange flames with yellow tipping. Dirt or other fine
particles are burned by heater, causing brief patches of orange flame.
CORRECT FLAME PATTERN AT HIGH POSITION
Figure 23 - Correct Front Burner Flame Pattern
INCORRECT FLAME PATTERN AT HIGH POSITION
Figure 24 - Incorrect Front Burner Flame Pattern
If front burner flame pattern is incorrect, as shown in Figure 24
• turn heater off (see To Turn Off Gas to Appliance, page 21)
• see Troubleshooting, pages 25 through 27
Thermocouple
Pilot Burner
Figure 22 - Incorrect Pilot
WARNING
NOTICE
Pilot Burner
Flame Pattern
Yellow
Tipping
At Top
of Blue
Flame
101991