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BURNER FLAME PATTERN
Figure 24 shows correct 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 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
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-
mote-Ready Models])
• 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.
Figure 22 - Correct Pilot Flame Pattern (Your pilot may vary
from pilots shown)
Figure 24 - Correct Burner Flame Pattern
CORRECT FLAME PATTERN AT HIGH POSITION
INCORRECT FLAME PATTERN AT HIGH POSITION
Figure 25 - Incorrect Burner Flame Pattern
Yellow Tipping At Top
of Blue Flame
INSPECTING BURNERS
Pilot Flame Pattern
Burner Flame Pattern
Pilot Burner
Thermocouple
Pilot Burner
Thermocouple
Figure 23 - Incorrect Pilot Flame Pattern (Your pilot may vary
from pilots shown)
Thermocouple
Pilot Burner
Pilot Burner
Thermocouple