Desa B - Manual (Page 17)

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OWNER’S MANUAL
FRONT BURNER FLAME
PATTERN
Figure 26 shows correct front burner flame
pattern. Figure 27 shows incorrect front
burner flame pattern. The incorrect burner
flame pattern shows yellow tipping at top of
blue flame.
Figure 27 - Incorrect Front Burner Flame
Pattern
Figure 26 - Correct Front Burner Flame
Pattern
Yellow Tipping At Top
of Blue Flame
WARNING: If yellow tipping
occurs, your heater could pro-
duce increased levels of carbon
monoxide. If front burner flame
pattern shows yellow tipping, fol-
low instructions at bottom of this
page. Yellow flame on rear burner
is normal.
NOTICE: Do not mistake orange
flames with yellow tipping. Dirt
or other fine particles are burned
by heater, causing brief patches
of orange flame.
INSPECTING
BURNERS
Check pilot flame pattern and burner flame
patterns often.
PILOT FLAME PATTERN
Figure 24 shows a correct pilot flame pat-
tern. Figure 25 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 25
• turn heater off (see To Turn Off Gas to
Appliance, page 15 [thermostat-con-
trolled models] or page 16 [manually-
controlled models])
• see Troubleshooting, pages 19 through 21
Thermocouple
Pilot Burner
Figure 24 - Correct Pilot Flame Pattern
Pilot Burner
Thermocouple
Figure 25 - Incorrect Pilot Flame Pattern
If front burner flame pattern is incorrect, as
shown in Figure 27
• turn heater off (see To Turn Off Gas to
Appliance, page 15 [thermostat-con-
trolled models] or page 16 [manually-
controlled models])
• see Troubleshooting, pages 19 through 21