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Figure 32– Incorrect Pilot Flame
Pattern
BURNER FLAME PATTERN
Figure 33 shows a correct burner
flame pattern. Figure 34 shows an
incorrect burner flame pattern. If
burner flame is incorrect:
l Turn heater off
l see troubleshooting, page 12.
Figure 33– CorrectFlame Pattern
with Control Knob Set to Hign
Flane
Figure 34– Incorrect Flame Pattern
with Control Knob Set to Hign
Flane
BURNER PRIMARY AIR HOLES
Air is drawn into the burner
through the holes in the fitting at
the entrance to the burner. These
holes may become blocked with
dust or lint. Periodically inspect
these holes for any blockage and
clean as necessary. Blocked air
holes will create soot.
MAIN BURNER
Periodically inspect all burner flame
holes with the heater running. All
slot burner flame holes should be
open with yellow flame present.
All round burner flame holes
should be open with a small blue
flam e present. Som e burner
f l a m e h o l e s m a y b e c o m e
blocked by debris or rust, with no
flame present. If so, turn off
heater and let cool. Either re-
move the blockage or replace
the burner. Blocked burner flame
holes will create soot.
CLEANING AND
MAINTENANCE
WARNING: Turn off heater
and let cool before cleaning.
CAUTION: You must keep
control areas, burner, and
circulating air passageways of
heater clean. Inspect these
areas of heater before each
use. Have heater inspected
yearly by a qualified service
person. Heater may need more
f requent cleaning due t o
excessive lint from carpeting,
bedding material, pet hair, etc.
The primary air inlet holes allow the
proper amount of air to mix with the
gas. This provides a clean burning
flame. Keep these holes clear of
dust, dirt and lint. Clean these air
inlet holes prior to each heating
season. Blocked air holes will cre-
ate soot. We recommend that you
clean the unit every 2,500 hours of
operation or every three months.
We also recommend that you keep
the burner tube and pilot assem-
bly clean and free of dust and dirt.
To clean these parts we recom-
mend using compressed air no
greater than 30 PSI. Your local
computer store, hardware store, or
home center m ay carry com-
pressed air in a can, you can use
a vacuum cleaner in the blow
position. If using compressed air
in a can, please follow the direc-
tions on the can, or you could dam
18
age the pilot assembly.
1. Shut off the unit, including the
pilot. Allow the unit to cool for
at least thirty minutes.
2. Inspect burner, pilot, and pri-
mary air inlet holes on injector
holder for dust and dirt (see fig-
ure 33).
3. Blow air through the ports/slots
and holes in the burner.
4. Check the injector holder lo-
cated at the end of the burner
tube again. Remove any large
particles of dust, dirt, lint, or pet
hairs 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 the pilot assembly also. A yel-
low tip on the pilot flame indicates
dust and dirt in the pilot assembly.
There is a small pilot air inlet hole
about two inches from where the pi-
lot flame comes out of the pilot as-
sembly (see Figure 34). With the
unit off, lightly blow air through the
air inlet hole. You may blow through
a drinking straw if compressed air
is not available.
Figure 35– Injector Holder On
Outlet Burner Tube
Figure 36 – Pilot Inlet Air Hole
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