1 3
OPERATING HEATER
Continued
CLEANING AND MAINTENANCE
DISCONNECT WIRING OR CONTROL
MODULE
1. Remove four screws from the rear
control panel , take out thermostat
sensing bulb from the clip, then dis-
connect 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
installing, reverse the steps above.
(See Figure 22 and Figure 25 ).
DISCONNECT FAN
1. Remove sc rews from the fan
bracket panel , pull the fan bracket
panel out to remove. Then discon-
nect 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 23 and Figure 25).
Figure 22- Control Model
Figure 23- Fan
INSPECTING BURNERS
C h ec k p ilo t fla m e p at ter n a n d
burner flame patterns often.
PILOT FLAME PATTERN
Figure 17 shows a correct pilot flame
pattern. Figure 18 shows an incorrect
pilot flame pattern. The incorrect pi-
lot flame is n ot 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
tu rn h eater o ff (see
To Tu rn
Off Gas to Appliance
, page 9)
l
see
Troubleshooting
(pages 15
through 16).
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.
CAUTION: Label
all wires prior to
d is c o n n e c t io n w h en s e r vic in g
controls. W iring errors can cause
improper and dangerous operation.
Ve r if y p r o p e r o p e r a t io n a f t e r
servicing.
BURNER FLAME PATTERN Figure
19
shows a correct burner flame pattern.
Figure 20 shows an incorrect burner
flame pattern. If burner flame pattern is
incorrect:
l
turn heater off (see To Turn
O ff G as to A p plianc e, p ag e 9 )
l
see
Troubleshooting
, pages 15
through 16