INSPECTING BURNERS
Pilot Flame Pattern
Front Burner Flame Pattern
17
INSPECTING BURNERS
Check pilot flame pattern and burner flame patterns often.
PILOT FLAME PATTERN
Figure 22 shows a correct pilot flame pattern. Figure 23 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 23
•turn heater off (see To Turn Off Gas to Appliance, page 15 [Re-
•see Troubleshooting, pages 19 through 21
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 |
|
BURNER FLAME PATTERN
Figure 24 shows correct front burner flame pattern.
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 25
•turn heater off (see To Turn Off Gas to Appliance, page 15
•see Troubleshooting, pages 19 through 21
Thermocouple | Thermocouple |
|
Figure 22 - Correct Pilot Flame Pattern (Your pilot may vary from pilots shown)
Pilot Burner
Pilot Burner
Thermocouple | Thermocouple |
|
Figure 23 - Incorrect Pilot Flame Pattern (Your pilot may vary from pilots shown)
Figure 24 - Correct Front Burner Flame Pattern
Yellow Tipping At Top
of Blue Flame
Figure 25 - Incorrect Front Burner Flame Pattern
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