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Figure 43 - Correct Pilot Flame Pattern
Pilot.Burner
Thermocouple
Figure 44 - Incorrect Pilot Flame Pattern
Thermocouple
INSPECTING bURNERS
Pilot.Burner
Check pilot flame pattern and burner flame
patterns.often.
pILOT FLAME pATTERN
Figure 43 shows a correct pilot flame pattern.
Figure 44 shows an incorrect pilot flame pat
-
tern. The incorrect pilot flame is not touching
the.thermocouple..This.will.cause.the.thermo-
couple to cool. When the thermocouple cools,
the.heater.will.shut.down.
If pilot flame pattern is incorrect, as shown
in.Figure.
•. turn.heater.off.(see.
To Turn Off Gas to Ap-
pliance
, page 24
•. see.
Troubleshooting
, page 28
Note: The pilot flame on natural gas units will
have a slight curve, but flame should be blue
and have no yellow or orange color.
To.
Thermopile
To.AUTO.Terminal.
on.Switch
To.OFF.
Terminal.
on.Switch
WIRING DIAGRAM
CLEANING AND MAINTENANCE
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
-
fied 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 flame. 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 qualified service person.