1 3
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 3 0 seco n d s after lig h tin g
pilot. After 30 seconds, release
c o n t r o l k n o b . N o w f o l l o w
Step 8.
INSPECTING BURNERS
C h e c k p ilo t f la m e p a t t e r n a n d
burner flame patterns often.
PILOT FLAME PATTERN
F igu re 20 sh ow s a c o rrec t p ilo t
flame pattern. Figure 21 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 21.
l
Turn heater off (see TO TURN
OFF GAS TO APPLIANCE)
l
see
troubleshooting
Figure 19 -Correct Pilot Flame
Pattern
Figure 21 shows a correct burner
flame pattern. Figure 22 shows an
incorrect burner flame pattern. If
burner flame is incorrect:
l
Turn heater off (see TO TURN
OFF GAS TO APPLIANCE)
l
See
troubleshooting
Figure 20 -Incorrect Pilot Flame
Pattern
BURNER FLAME PATTERN
Figure 21-Correct Flame Pattern
with Control Knob Set to High Flame
Figure 22 -Incorrect Flame Pattern
with Control Knob Set to High Flame
WARNING:
Turn off heater and
let cool before cleaning.
CLEANING 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
inlet 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.
We also recommend that you keep
the burner tube and pilot assembly
clean and free of dust and dirt. To
clean these parts we recommend
using compressed air no greater
than 30 PSI. Your local computer
store, hard w are sto re, o r ho m e
center may carry compressed air in
a c a n . Yo u c an u se a va c u u m
c lean er in th e b lo w p o sitio n . If
u sin g co m p ressed air in a can ,
please follow 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 . I n s p e c t b u r n e r , p i l o t a n d
p r im a r y a ir i n l e t h o le s o n
injector holder for dust and dirt
(See Figure 24).
3 . B l o w a i r t h r o u g h t h e
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. Blo w air into the prim ary air
holes on the injector holder.
6. In c ase an y large c lu mp s of
du st have n ow been pu sh ed
into the burner repeat steps 3
and 4.
Clean the pilot assembly also. A
y e l lo w t ip o n t h e p il o t f l a m e
indicates dust and dirt in the pilot
assembly. There is a small pilot air
inlet ho le about two inc hes from
where the pilot flame comes out of
the pilot assembly (see Figure 25).
W ith the unit off, lightly blow air
through the air inlet hole. You may
blow throug h a drinking straw if
co mp ressed air is n ot available.
C A U T IO N :
Yo u m u st k ee p
c o n t r o l a r e a s , b u r n e r , a n d
c irc u latin g air p assag ew ays o f
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 m o r e
f r e q u e n t c l e a n i n g d u e t o
e xc es sive lin t f ro m c ar p e tin g ,
b ed ding m aterial, p et h air, etc .
CLEANING AND
MAINTENANCE
