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Check pilot fl ame pattern and burner fl ame
patterns often.
PILOT FLAME PATTERN
Figure 28 shows a correct pilot fl ame pattern.
Figure 29 shows an incorrect pilot fl ame pat-
tern. The incorrect pilot fl ame is not touching
the thermocouple. When the thermocouple
cools, the heater will shut down.
If pilot fl ame pattern is incorrect, as shown
in Figure 29
• turn heater off (see To Turn Off Gas to Ap-
pliance, Page 19)
• see Troubleshooting, Page 23
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
Figure 28 - Correct Pilot Flame Pattern
(Propane/LP Pilot Shown)
Pilot Burner
Figure 29 - Incorrect Pilot Flame Pattern
(Propane/LP Pilot Shown)
BURNER FLAME PATTERN
Figure 30, shows a correct burner fl ame pat-
tern. Figure 31, shows an incorrect burner
fl ame pattern.
20
INSPECTING BURNERS
If burner fl ame pattern is incorrect as shown
in Figure 31
• turn heater off (see To Turn Off Gas to Ap-
• see Troubleshooting, Page 23
BURNER PRIMARY AIR HOLES
Thermocouple
Air is drawn into the burner through the holes
in the fi 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.
MAIN BURNER
Periodically inspect all burner fl ame holes with
the heater running. All slotted burner fl ame
holes should be open with yellow fl ame pres-
ent. All round burner fl ame holes should be
open with a small blue fl ame present. Some
burner fl ame holes may become blocked by
debris or rust, with no fl ame present. If so,
turn off heater and let cool. Remove blockage,
blocked burner fl ame holes will create soot.
SuperiorFireplaces.us.com
pliance, Page 19)
Bright yellow burner
fl ame; fl ame will be
blue next to burner
Figure 30 - Correct Flame Pattern
Figure 31 - Incorrect Flame Pattern
Dark orange
burner fl ame
126848-01B
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