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Figure 23 - Correct Pilot Flame
Pattern

Figure 24 - Incorrect Pilot Flame
Pattern

Figure 26 - Incorrect Burner
Flame Pattern

Figure 25 - Correct Burner Flame
Pattern

BURNER FLAME PATTERN

Figure  25  shows a  correct   burner
flame  pattern.  Figure 26  shows  an
incorrect  burner   flame  pattern.  If
burner  flame   pattem  is  incorrect,  as
shown  in  Figure 26.

turn heater off (see To Turn Off

Gas to Appliance. page 11 for
non-thermostat models or page

12 for thermostat models).

see Troubleshooting. pages 14

through 16.

CLEANING ODS/PILOT AND
BURNER

Use a vacuum cleaner,

pressurized air. or small, soft

bristled brush to clean.

CLEANING BURNER
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.  To  clean  these
parts  we   recommend  using   com-
pressed  air  no  greater  than   30  PSl.
Your  local  computer  store,  hardware
store,  or  home  center  may  carry com-
pressed  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  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  for  dust
         and  dirt.
3.       Blow  air  through  the  ports/slots
         and  holes  in  the  burner.
Clean  the  pilot  assembly  also.  A
yellow    tip    on    the    pilot    flame
indicates  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 27).
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.

Figure 27 - Pilot Inlet Air Hole

CLEANING HEATER CABINET
Air Passageways

Use a vacuum cleaner or

pressurized air to clean.

Exterior

Use a soft cloth dampened with

a mild soap and water mixture.
Wipe the cabinet to remove dust.

MANUAL LIGHTING

PROCEDURE

1.   Remove  lower  front  panel (see
      Figure 7 page 7).
2.  Follow  steps 1 through   5   under

Lighting Instructions on page 12.

3.  With   control   knob    pressed   in,
    strike match.  Hold  match  to  pilot
     until  pilot  lights.
4.   Keep   control   knob   pressed   in for
     30 seconds  after  lighting pilot.  After
     30  seconds, release control  knob.
     Follow    step   8   under

Lighting

Instructions on page 12.
5. Replace lower front panel.

PILOT FLAME PATTERN

Figure  23  shows  a  correct  pilot
flame  pattern.  Figure  24 shows  an
incorrect  pilot   flame  pattern.  The
incorrect  pilot  flame  is  not  touching
thermocouple. This  will  cause  the
thermocouple  to  cool.  When  the
thermocouple  cools, the healer will
shut down. If pilot  flame pattern is
incorrect, as  shown  in  Figure 24.

turn heater off (see To Turn

Off Gas to Appliance. page 11
for non-thermostat models or

page 12 for thermostat models.)

see Troubleshooting, pages 14

through 16.

WARNING:

Turn off heater

and let cool before servicing.

CAUTION:

You must keep con-

trol areas,  burner,  and  circulating
air       passageways  of heater  clean.
Inspect these  areas  of  heater   be-
fore  each  use. Have  heater  In-
spected  yearly  by  a  qualified  ser-
vice  person.  Heater may  need  more
frequent  cleaning due to  excessive
l i n t   f r o m   carpeting,    bedding
material,  pet  hair, etc.

THERMOSTAT

CONTROL OPERATION

The  thermostatic  control  used  on
these  Models  differs  from  standard
thermostats.Standard  thermostats  sim-
ply  turn on  and  off  the  burner. The
thermostat    used    on    this    heater
senses  the  room  temperature. At
times  the  room  may  exceed  the  set
temperature.If  so, the  burner  will
shut  off.The  burner  will  cycle  back
on  when  room  temperature  drops
below    the    set    temperature.  The
temperature  setting  knob can  be  set
to  any  comfort  level  between  HI
and  LO.

Note

: The thermostat sensing bulb

measures  the  temperature  of  air  near
the  heater  cabinet. This  may  not  al-
ways  agree  with  room  temperature
(depending  on  housing  construction,
installation  location, room  size, open
air  temperatures, etc.)Frequent  use of
your  heater  will  let   you determine
your  own  comfort  levels.

OPERATING HEATER

Continued

INSPECTING BURNER

Check pilot flame pattern and
burner flame pattern often.

CLEANING AND

MAIN TENANCE