ComfortFlame.US.com
900559-00 NC
22
CLEANING AND MAINTENANCE
We also recommend that you keep the burner tube and pilot assembly
clean and free of dust and dirt. To clean these parts we recommend
using compressed air no greater than 30 PSI. Your local computer
store, hardware store or home center may carry compressed air in a
can. If using compressed air in a can, please follow the directions on
the can. If you don’t follow directions on the can, you could damage
the pilot assembly.
1. Shut off unit, including pilot. Allow unit to cool for at least thirty
minutes.
2. Inspect burner, pilot and primary air inlet holes on injector holder
for dust and dirt
(see
Figure 45
)
.
3. Blow air through the ports/slots and holes in the burner.
4. Check injector holder located at end of burner tube again. Remove
any large particles of dust, dirt, lint or pet hair with a soft cloth or
vacuum cleaner nozzle.
5. Blow air into the primary air holes on the injector holder.
6. In case any large clumps of dust have now been pushed into the
burner repeat steps 3 and 4.
Clean pilot assembly also. Additional cleaning may be needed for
proper pilot operation based on use/lack of use. A yellow tip on the
pilot fl ame may indicate dust and dirt in the pilot assembly. There is
a small pilot air inlet hole about from where the pilot fl ame comes
out of pilot assembly
(see
Figure 46
).
With unit off, lightly blow
air through air inlet hole. You may blow through a drinking straw if
compressed air is not available.
INSPECTING BURNERS
Check pilot fl ame pattern and burner fl ame patterns often.
PILOT FLAME PATTERN
Figure 43
shows a correct pilot fl ame pattern.
Figure 44
shows an
incorrect pilot fl ame pattern. The incorrect pilot fl ame is not touching
the thermocouple. This will cause the thermocouple to cool. When
the thermocouple cools, the heater will shut down.
If pilot fl ame pattern is incorrect, as shown in
Figure 44
• turn heater off (see To Turn Off Gas to Appliance,
page 21
• see
Troubleshooting,
page 24
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.
Figure 43 - Correct Pilot Flame Pattern
Figure 44 - Incorrect Pilot Flame Pattern
Pilot Burner
Thermocouple
Thermocouple
Pilot Burner
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 qualifi ed service person. Heater
may need more frequent cleaning due to excessive
lint from carpeting, pet hair, bedding material, etc.
WARNING: Failure to keep the primary air
opening(s) of the burner(s) clean may result in
sooting and property damage.
BURNER INJECTOR 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 inlet 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.
