INSPECTING BURNERS
Check pilot fl ame pattern and burner fl ame patterns often.
PILOT FLAME PATTERN
Figure 22 shows a correct pilot fl ame pattern. Figure 23 shows an incorrect pilot fl ame pattern. The incorrect pilot fl ame is not touching the thermocouple. This will cause the thermocouple to cool. When the thermocouple cools, the heater will shut down.
If pilot fl ame pattern is incorrect, as shown in Figure 23
•turn heater off (see To Turn Off Gas to Appliance, page 15 (Remote- Ready Models])
•see Troubleshooting, pages 19 through 21
Note: The pilot fl ame on natural gas units will have a slight curve, but fl ame should be blue and have no yellow or orange color.
Pilot Burner
Thermocouple
Figure 22 - Correct Pilot Flame Pattern (Your pilot may vary from pilots shown)
Pilot Burner
INSPECTING BURNERS | 17 |
Pilot Flame Pattern | |
Burner Flame Pattern |
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BURNER FLAME PATTERN
Figure 24 shows correct burner fl ame 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 fl ame 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
Blue and bright
Yellow fl ames
Figure 24 - Correct Burner Flame Pattern
Darker orange mes
Figure 25 - Incorrect Burner Flame Pattern
Thermocouple
Figure 23 - Incorrect Pilot Flame Pattern (Your pilot may vary from pilots shown)
The fl ames from the burner travel horizontally through the log set and emerge at the middle and rear of the set against the back logs.
The fl ames are blue off the burner and as they progress through the log set, change to a light yellow color, yellow decorative fl ames are visible as the fl ames exit the log set.
The base of the log set and the underside of the top logs glow red. Natural gas models will burn with more blue fl ame, while propane gas model will burn with bright yellow fl ame.
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