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Figure 12 -Pilot
THERMOSTAT CONTROL
OPERATION
The thermostat control knob can be
set to any comfort level between HI
and LO. The thermostat will gradually
modulate the heat output and flame
height from higher to lower settings,
or pilot, in order to maintain the
comfort level you select. The ideal
comfort setting will vary by household
depending upon the amount of space
to be heated, the output of the
central heating system, etc.
Note : Selecting the Hi setting with
the control knob will cause the
burners to remain fully on, without
modulating down in most cases.
MANUAL LIGHTING
PROCEDURE
1. Follow steps 1 through 5 under
lighting instruction.
2. Depress control knob and light
pilot with match.
3. Keep control knob pressed in
for 30 seconds after lighting
pilot. After 30 seconds, release
control knob.
Figure 13 -Correct Pilot Flame Pattern
INSTALLATION
Continued
INSPECTING BURNERS
C h e c k p i l o t f l a m e p a t t e r n a n d
burner flame patterns often.
PILOT FLAME PATTERN
Figure 13 shows a correct pilot
flame pattern. Figure 14 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 14
Turn heater off (see TO TURN OFF
GAS TO APPLIANCE, page 11)
see troubleshooting, page 13 .
BURNER FLAME PATTERN
Figure 15 shows a correct burner
flame pattern. Figure 16 shows an
incorrect burner flame pattern. If
burner flame is incorrect:
Turn heater off (see TO TURN OFF
GAS TO APPLIANCE, page 11)
see troubleshooting, page 13 .
Figure 16 -Incorrect Flame Pattern
with Control Knob Set to High Flame
Figure 17 -Injector Holder On Outlet
Burner Tube
12
CLEANING AND MAINTENANCE
WARNING: Turn off heater and
let cool before cleaning.
C A U T I O N : Yo u m u s t k e e p
c o n t r o l a r e a s , b u r n e r , a n d
circulating air passageways of
h e a t e r c l e a n . I n s p e c t t h e s e
a r e a s o f h e a t e r b e f o r e e a c h
u s e . H a v e h e a t e r i n s p e c t e d
yearly by a qualified service person.
H e a t e r
m a y
n e e d
f r e q u e n t
c l e a n i n g
e x c e s s i v e l i n t f r o m c a r p e t i n g ,
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.
1. Shut off the unit, including the
pilot. Allow the unit to cool for at
least thirty minutes.
2. Inspect burner, pilot and primary air
inlet holes on injector holder for
dust and dirt (see figure 17).
3. Blow air through the ports/slots
and holes in the burner.
4. Check the injector holder located
at the end of the burner tube
again. Remove any large particles
of dust, dirt, lint, or pet hair 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.
m o r e
d u e
t o
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