INSPECTING BURNER
Pilot Flame Pattern
Burner Flame Pattern Blue Flame Models
Burner Flame Pattern Infrared Models
15
INSPECTING BURNER
Check pilot flame pattern and burner flame pattern often.
PILOT FLAME PATTERN
Figure 24 shows a correct pilot flame pattern. Figure 25 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 25
•turn heater off (see To Turn Off Gas to Appliance, pages 12, 13 or 14 depending on your model)
•see Troubleshooting, pages 17 through 19
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 |
Pilot Burner | Burner |
Thermocouple | Thermocouple |
| |
Figure 24 - Correct Pilot Flame | Figure 25 - Incorrect Pilot Flame |
Pattern | Pattern |
BURNER FLAME PATTERN
BLUE FLAME MODELS
Figure 26 shows a correct burner flame pattern. Figure 27 shows an incorrect burner flame pattern. The incorrect burner flame pattern shows yellow tipping of the flame. It also shows the flame higher than 1/2 the glass panel height.
WARNING: If yellow tipping occurs, your heater could produce increased levels of carbon monoxide. If burner flame pattern shows yellow tipping, proceed with the following instructions.
NOTICE: Do not mistake orange flames with yellow tipping. Dust or other fine particles enter the heater and burn causing brief patches of orange flame.
If burner flame pattern is incorrect, as shown in Figure 27
•turn heater off (see To Turn Off Gas to Appliance, pages 12 or 14 depending on your model)
•see Troubleshooting, pages 17 through 19
1/2 GLASS HEIGHT
(Models GWN6 and GWP6 will be lower due to lower input rating)
Figure 26 - Correct Burner Flame Pattern
Yellow
Tipping
1/2 GLASS HEIGHT
Figure 27 - Incorrect Burner Flame Pattern
BURNER FLAME PATTERN
INFRARED MODELS
Figure 28 shows a correct burner flame pattern. Figure 29 shows an incorrect burner flame pattern.
If burner flame pattern is incorrect, as shown in Figure 29
•turn heater off (see To Turn Off Gas to Appliance, page 13 or 14)
•see Troubleshooting, pages 17 through 19
Figure 28 - Correct Burner | Figure 29 - Incorrect Burner |
Flame Pattern | Flame Pattern |
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