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113109-01G 23
Figure 38 - Correct Pilot Flame Pattern
(Natural Gas Pilot Shown)
Figure 39 - Incorrect Pilot Flame Pattern
(Natural Gas Pilot Shown)
Pilot Burner
Thermocouple
Pilot Burner
Thermocouple
INSPECTING BURNER
BURNER PRIMARY AIR HOLES
Air is drawn into the burner through the holes
in the tting at the burner entrance. These
holes may become blocked with dust or lint.
Periodically inspect these holes for any block-
age and clean if needed. Blocked air holes
will create soot.
Figure 40 - Correct Burner Flame Pattern
Yellow Tipping
Figure 41 - Incorrect Burner Flame
Pattern
MAIN BURNER
Periodically inspect all burner ame holes with
the replace running. All slotted burner ame
holes should be open with yellow ame pres-
ent. All round burner ame holes should be
open with a small blue ame present. Some
burner ame holes may become blocked by
debris or rust, with no ame present. If so, turn
off replace and let cool. Remove blockage.
Blocked burner ame holes will create soot.
BURNER FLAME PATTERN
-
Figure 40 shows a correct burner ame pat-
tern. Figure 41 shows an incorrect burner
ame pattern. The incorrect burner ame
pattern shows the ame higher consistently
higher than 1" above the logs.
If burner ame pattern is incorrect, as shown
in Figure 41
• turn heater off (see To Turn Off Gas To
Appliance, page 20)
• see Troubleshooting, page 25
Check pilot ame pattern and burner ame
patterns often.
PILOT FLAME PATTERN
Figure 38 shows a correct pilot ame pattern.
Figure 39 shows an incorrect pilot ame pat-
tern. The incorrect pilot ame is not properly
heating the thermocouple. When the thermo-
couple cools, the heater will shut down.
If pilot ame pattern is incorrect, as shown
in Figure 39
• turn heater off (see To Turn Off Gas to Ap-
pliance, page 20)
• see Troubleshooting, page 25
Note: The pilot ame on a natural gas units will
have a slight curve, but ame should be blue
and have no yellow or orange color.