Inspecting Burners - Desa VTGF33PRA Owner's Operation And Installation Manual

INSPECTING BURNERS

Check pilot flame pattern and burner flame pat-
terns often.
PILOT FLAME PATTERN
Figure 41 shows a correct pilot flame pattern.
Figure 42 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 42
• turn heater off (see To Turn Off Gas to Appliance,
page 22)
• see Troubleshooting, page 26
Note: The pilot flame on natural gas units will
have a slight curve, but the flame should be blue
and have no yellow or orange color.
Thermocouple
Manual Ignitor Electrode
Figure 41 - Correct Pilot Flame Pattern
(Propane/LP Pilot Shown)
Figure 42 - Incorrect Pilot Flame Pattern
(Natural Gas Pilot Shown)
24
Automatic Ignitor
Electrode
Pilot
Burner
Pilot
Burner
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