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Check pilot fl ame pattern and burner fl ame
patterns often.
PILOT FLAME PATTERN
Figure 46 shows a correct pilot fl ame pat-
tern. Figure 47 shows an incorrect pilot
fl ame pattern. The incorrect pilot fl ame is not
properly heating the thermocouple. When the
thermocouple cools, the heater will shut down.
If pilot fl ame pattern is incorrect, as shown
in Figure 47.
• turn heater off (see To Turn Off Gas to Ap-
pliance, Page 22)
• see Troubleshooting, Page 33
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.
Thermocouple
Figure 46 - Correct Pilot Flame Pattern
Thermocouple
Figure 47 - Incorrect Pilot Flame Pattern
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 may create soot.
BURNER FLAME PATTERN
WARNING: If incorrect burner
fl ame pattern occurs your fi replace
could produce increased levels of
carbon monoxide.
NOTICE: Do not mistake orange
fl ames with yellow tipping. Dirt or
other fi ne particles are burned by
fi replace, causing brief patches of
orange fl ame.
900719-00B
INSPECTING BURNERS
Figure 48 shows the correct burner fl ame.
The front ember burner should have a small
blue fl ame. When the ember material is ap-
plied, the embers will glow red and the fl ame
may have a few small bright yellow tips less
than 1/2 inch in height.
The middle burner produces a blue fl ame
that impinges upon the ceramic ramp caus-
ing the ramp to glow red with an occasional
yellow streak.
The rear burner produces a bright yellow
fl ame with the base of the fl ame being blue.
Figure 49 shows the incorrect burner fl ame.
The front ember burner should not produce
yellow fl ames greater than 1/2" in height or
any dark yellow or orange fl ames.
Pilot Burner
The middle burner should not produce fl ame
that remains yellow or yellow fl ame that ex-
tends above the ceramic ramp.
The rear burner should not produce a dark
yellow / orange fl ame nor should it be absent
of blue color near the base of the fl ame next
to the shiny stainless steel burner..
If burner fl ame pattern is incorrect, as shown
in Figure 49.
Pilot Burner
• turn fi replace off (see To Turn Off Gas to
• see Troubleshooting, Page 33
Middle burner
fl ame should
be blue with
the ramp/
log glowing
orange/red
Figure 48 - Correct Burner Flame Pattern
Yellow tipping
on ember
burner
Figure 49 - Incorrect Burner Flame Pattern
SuperiorFireplaces.us.com
Appliance, Page 22)
Bright yellow rear
burner fl ame;
fl ame will be blue
next to burner
Dark orange rear
burner fl ame
Small blue
fl ame on
ember
burner with
no yellow
tipping
Yellow or
dark orange
middle
burner fl ame
29
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