ComfortFlame.US.com
900553-00NC
20
INSPECTING BURNERS
WARNING: Turn off heater
and let cool before cleaning.
CAUTION: You must keep
control areas, burners and
circulating air passageways of
heater clean. Inspect these areas
of heater before each use. Have
heater inspected yearly by a quali-
fi ed service person. Heater may
need more frequent cleaning due
to excessive lint from carpeting,
pet hair, bedding material, etc.
Check pilot fl ame pattern and burner fl ame
patterns often.
PILOT FLAME PATTERN
Figure 22
shows a correct pilot fl ame pattern.
Figure 23
shows an incorrect pilot fl ame pat-
tern. The incorrect pilot fl ame is not touching
the thermocouple. This will cause the thermo-
couple to cool. When the thermocouple cools,
the heater will shut down.
If pilot fl ame pattern is incorrect, as shown
in
Figure 23
.
• 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.
BURNER PRIMARY AIR HOLES
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.
Figure 22 - Correct Pilot Flame Pattern
(Your pilot may vary from pilot shown)
Pilot Burner
Thermocouple
Pilot Burner
Thermocouple
Figure 23 - Incorrect Pilot Flame Pattern
(Your pilot may vary from pilots shown)
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.
WARNING: Failure to keep
the primary air opening(s) of
the burner(s) clean may result
in sooting and property damage.
BURNER ORIFICE HOLDER AND
PILOT AIR INLET HOLE
The primary air inlet holes allow the proper
amount of air to mix with the gas. This provides
a clean burning fl ame. Keep these holes clear
of dust, dirt, lint and pet hair. Clean these air in-
let holes prior to each heating season. Blocked
air holes will create soot. We recommend that
you clean the unit every three months during
operation and have heater inspected yearly by
a qualifi ed service person.
CLEANING AND MAINTENANCE