14
CLEANING AND
MAINTENANCE
DISCONNECT WIRING ON CONTROL
MODULE
1. Remove two screws from the lower
front panel , put the lower front panel
forward the down take out thermostat
sensing bulb from the clip, then disco-
nnect the wires to from control
module .
Note: Do not confuse the mark on
each wire.
2. Remove two screws and hex nuts,
take out the control module. When
installing , reverse the steps above.
(See Figure 20, 23 and 24)
Figure 20 Control Model Access
DISCONNECT FAN
1.Remove screws from the fan
bracket panel, pull the fan bracket
panel out to remove. Disconnect
two wires two wires of temperature
sensor.
2.Mark or tag each wire removed for
its exact reconnection. Remove
the four screws from the fan .
When installing , reverse the
steps above.(See Figures 21, 23
and 24)
CAUTION: You must keep
control areas, burner, and circulat-
ing 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,
bedding material, pet hair, etc.
Figure 21- Fan Access
CLEANING BURNER AND PILOT
AIR INLET HOLE
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 assembly
clean and free of dust and dirt.
CLEANING ODS/PILOT AND BURNER
l Use a vacuum cleaner,pressurized
air. or small, soft bristled brush
to clean.
Clean the pilot assembly also. A
yellow tip on the pilot flame indi-
cates dust and dirt in the pilot
assembly. There is a small pilot air
inlet hole about two inches from
where the pilot flame comes out of
the pilot assembly (see Figure 22).
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.
WARNING: Failure to keep
the primary air opening(s) of the
burner(s) clean may result in soot-
ing and property damage.
CAUTION: Label all wires
prior to disconnection when servic-
ing controls.Wiring errors can
cause improper and dangerous
operation. Verify proper operation
after servicing.
To clean these parts we recom-
mend using compressed air no
greater than 30 PSl.
Your local computer store, hardware
store, or home center may carry
compressed air in a can. You can
use a vacuum cleaner in the blow
position. If using compressed air in
a can, please follow the directions
on the can. If you don’t follow direc-
tions on the can, you could damage
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 for dust
and dirt.
3. Blow air through the ports/slots
and holes in the burner.
CLEANING HEATER CABINET
Air Passageways
l Use a vacuum cleaner or
pressurized air to clean.
Exterior
l Use a soft cloth dampened with
a mild soap and water mixture.
Wipe the cabinet to remove dust.
Figure 22 - Pilot Inlet Air Hole
WARNING: Disconnect
power before attempting any main-
tenance or cleaning to reduce the
risk of fire , electric shook or per-
sonal injury. Turn off heater and let
cool before cleaning.