INSPECTING BURNERS
Check pilot flame pattern and burner flame patterns often.
PILOT FLAME PATTERN
Figure 41 shows a correct pilot flame pattern. Figure 42 shows an incorrect pilot flame pat- tern. The incorrect pilot flame is not touching the thermocouple. This will cause the thermocouple to cool. When the thermocouple cools, the fireplace will shut down.
If pilot flame pattern is incorrect, as shown in Figure 42
•turn fireplace off (see To Turn Off Gas to Appliance, page 21)
•see Troubleshooting, page 26
Note: The correct pilot flame on natural gas units will have a slight curve, but flame should be blue and have no yellow or orange color.
(Pilot May Vary From Ones Shown)
Pilot | Pilot Burner |
Burner | Thermocouple |
Figure 41 - Correct | Figure 42 - Incorrect |
Pilot Flame Pattern | Pilot Flame Pattern |
MAIN BURNER
Periodically inspect all burner flame holes with the heater running. All slotted burner flame holes should be open with yellow flame pres- ent. All round burner flame holes should be open with a small blue flame present. Some burner flame holes may become blocked by debris or rust, with no flame present. If so, turn off heater and let cool. Remove blockage. Blocked burner flame holes may create soot.
FRONT BURNER FLAME PATTERN
Figure 43 shows correct front burner flame pattern. Figure 44 shows incorrect front burner flame pattern. The incorrect burner flame pattern shows yellow tipping at top of blue flame.
If front burner flame pattern is incorrect, as shown in Figure 44
•turn fireplace off (see To Turn Off Gas to Appliance, page 21)
•see Troubleshooting, page 26
Figure 43 - Correct Burner Flame Pattern
Yellow Tipping
At Top of Blue 
Flame
Figure 44 - Incorrect Burner Flame
Pattern
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