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113109-01C 23
INSPECTING BURNER
Check pilot ame pattern and burner ame pat-
terns often.
PILOT FLAME PATTERN
Figure 44 shows a correct pilot ame pattern.
Figure 45 shows an incorrect pilot ame pattern.
The incorrect pilot ame is not properly heating
the thermocouple. When the thermocouple cools,
the heater will shut down.
If pilot ame pattern is incorrect, as shown in
Figure 45
• turn heater off (see To Turn Off Gas to Appli-
ance, page 21)
• 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.
Figure 44 - Correct Pilot Flame Pattern
(Natural Gas Pilot Shown)
Figure 45 - Incorrect Pilot Flame Pattern
(Natural Gas Pilot Shown)
Pilot Burner
Thermocouple
Pilot Burner
Thermocouple
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 blockage and clean if
needed. Blocked air holes will create soot.
MAIN BURNER
Periodically inspect all burner ame holes with
the replace running. All slotted burner ame
holes should be open with yellow ame present.
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 46 shows a correct burner ame pattern.
Figure 47 shows an incorrect burner ame pat-
tern. 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 47
• turn heater off (see To Turn Off Gas To Appli-
ance, page 21)
• see Troubleshooting, page 25
Figure 46 - Correct Burner Flame Pattern
Yellow Tipping
Figure 47 - Incorrect Burner Flame
Pattern