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INSPECTING BURNERS
Pilot Flame Pattern
Front Burner Flame Pattern
INSPECTING BURNERS
Check pilot flame pattern and burner flame patterns often.
PILOT FLAME PATTERN
Figure 34 shows a correct pilot flame pattern. Figure 35 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.
If pilot flame pattern is incorrect, as shown in Figure 35
•turn heater off (see To Turn Off Gas to Appliance, page 17 [Ther-
•see Troubleshooting, pages 24 through 26
Note: The pilot flame on natural gas units will have a slight curve, but flame should be blue and have no yellow or orange color.
Pilot Burner | Pilot Burner |
|
Thermocouple | Thermocouple |
|
Figure 34 - Correct Pilot Flame Pattern (Your pilot may vary from pilots shown)
FRONT BURNER FLAME PATTERN
Figure 36 shows correct front burner flame pattern. Figure 37 shows incorrect front burner flame pattern. The incorrect burner flame pattern shows yellow tipping at top of blue flame.
WARNING: 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.
NOTICE: Do not mistake orange flames with yellow tipping. Dirt or other fine particles are burned by heater, causing brief patches of orange flame.
If front burner flame pattern is incorrect, as shown in Figure 37
•turn heater off (see To Turn Off Gas to Appliance, page 17 [Ther-
•see Troubleshooting, pages 24 through 26
Pilot Burner
Pilot Burner
Thermocouple | Thermocouple |
|
Figure 35 - Incorrect Pilot Flame Pattern (Your pilot may vary from pilots shown)
Figure 36 - Correct Front Burner Flame Pattern
Yellow Tipping At Top
of Blue Flame
Figure 37 - Incorrect Front Burner Flame Pattern
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