Inspecting Burner; Cleaning And Maintenance - Desa CGP20LB Owner's Operation And Installation Manual

Blue-flame vent-free propane/lp gas heater
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OWNER'S
MANUAL
INSPECTING
BURNER
Check pilot flame pattern and burner flame
pattern often.
PILOT FLAME PATTERN
Figure 18 shows a correct pilot flame pat-
tern. Figure 19 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 19
• turn heater off (see To Turn Off Gas to
Appliance,)
• see Troubleshooting, pages 14 through 16
Thermoc_
er
Figure 18 - Correct Pilot Flame Pattern
Pilot Bumer
Thermoco
Figure 19- Incorrect Pilot Rsme Pattern
BURNER
FLAME
PATTERN
Figure 20 shows a correct burner flame
pattern. Figure 21 shows an incorrect burner
flame pattern. The incorrect burner flame
pattern shows yellow tipping of the flame. It
also shows the flame higher than 1/2 the
heat shield height.
If burner flame pattern is incorrect, as shown
in Figure 21
• turn heater off(see
To Turn OffGas to
Appliance, page 12).
• see Troubleshooting, pages 14 through 16
_i, WARNING: If yellow tipping
occurs, your heater could pro-
duce increased levels of carbon
monoxide.
If burner flame pat-
tern shows yellow tipping, follow
instructions
at bottom
of this
page.
NOTICE: Do not mistake orange
flames with yellow tipping. Dirt
or other fine particles enter the
heater end burn causing
brief
patches of orange flame.
CLEANING
AND
MAINTENANCE
_lL WARNING:
Turn off heater
and let cool before cleaning.
CAUTION:
You must keep
control areas, burner, and circu-
lating air passageways
of heater
clean.
Inspect
these
areas
of
heater before
each
use. Have
heater inspected yearly by a quali-
fied service person. Heater may
need more frequent cleaning due
to excessive lint from carpeting
and bedding material, sawdust,
cobwebs, etc.
ODS/PILOT AND BURNER
• Use a vacuum cleaner, pressurized air, or
small, soft bristled brush to clean.
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 cabi-
net to remove dust.
I
I
I
I
I
I
l--',
1/2 HF.AT SHIELD
I
OR GLASS HEIGHT !
t__,'
CORRECT FLAME PATTERN
AT HIGH PosmoN
Figure 20 - Correct Burner Flame Pattern
Yellow -... i"
Tipping
I
I
F!
1/2 HEAT SHIELD
I
OR GLASS HEIGHT!
L.-
I__
I
=
INCORRECT FLAME pATTERN
AT HIGH PosmoN
---I
Flgure21-1ncorrect BurnerFIsme Psttem
to,_7_
13

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