1 3
Figure 15 -Correct Pilot Flame Pattern
PILOT FLAME PATTERN
F igu re 15 sh ow s a c o rrec t p ilo t
flame pattern. Figure 16 shows an
incorrect pilot flame pattern. The
incorrect pilot flame is not touching
the thermocouple.This will cause the
thermocouple to cool. When the
thermocouple cools, the heater
will shut down. If pilot flame pattern
is incorrect, as shown in Figure 18
l
Turn heater off (see TO TURN OFF
GAS TO APPLIANCE, page 12)
l
see
troubleshooting,
page 16
.
Figure 16 -Incorrect Pilot Flame
Pattern
Figure 17 shows a correct burner
flame pattern. Figure 18 shows an
incorrect burner flame pattern. If
burner flame is incorrect:
l
Turn heater off (see TO TURN OFF
GAS TO APPLIANCE, page 12)
l
see
troubleshooting,
page 16
.
BURNER FLAME PATTERN
Figure 17 -Correct Flame Pattern
with Control Knob Set to High Flame
Figure 18 -Incorrect Flame Pattern
with Control Knob Set to High Flame
DISCONNECT WIRNG OR CONTROL
MODULE
1. Remove four screws from the rear
control panel , take out thermostat
sensing bulb from the clip, then disco-
nnect the wires to free to control
module from its mounting location .
Note: Do not confuse the mark on
the each wire.
2. Remove two screws and hex nuts,
take out the control module. When in-
stalling , reverse the steps above.
(See Figure 19 and Figure 23)
Figure 19- Control Model
DISCONNECT FAN
1.
Remove screws from the fan
bracket panel , pull the fan bracket
panel out to remove. Then disconne-
ct two wires free to fan.
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 Figure 20 and Figure 23)
Figure 20- Fan
WARNING:
Disconnect power be-
fore attempting any maintenance or
cleaning to reduce the risk of fire , elec-
tric shook or personal injury. Turn off
heater and let cool before cleaning.
CLEANING AND MAINTENANCE
CAUTION
:
Label all wires prior to
disconnection when servicing
Wiring errors can cause
improper and dangerous operation.
Verify proper operation after servicing.
controls
.
CAUTION:
You must keep control
areas, burner, and circulating air pas-
sageways of heater clean. Inspect
these areas of heater before each
use. Have heater inspected yearly by
a qualified service person. Heater
may need more frequent cleaning due
to excessive lint from carpeting,
bedding material, pet hair, etc.
CLEANING ODS/IGNITOR AND
BURNER
Clean with a vacuum cleaner.
CLEANING BURNER
INJECTOR HOLDER AND
PILOT AIR INLET HOLE
We recommend that you clean the unit
every three months or after 2500 hours
of operation. We also recommend that
you keep the burner tube and pilot as-
sembly clean and free of dust and
dirt. To clean these parts we recom-
mend using compressed air no greater
than 30 PSI. You can use a vacuum
cleaner in the blow position. If using
compressed air in a can, please fol-
low the directions on the can. If you don't
follow directions on the can, you could
damage the pilot assembly.
WARNING:
Failure to keep
primary air openings of burners clean
may result in sooting and property
damage.
13