Inspecting Burners - Desa Unvented (Vent-Free) Gas Compact Classic Hearth Fireplace VMH26NRB Owner's Operation And Installation Manual

Check pilot flame pattern and burner flame
patterns often.
PILOT FLAME PATTERN
Figure 43 shows a correct pilot flame pattern.
Figure 44 shows an incorrect pilot flame pat-
tern. The incorrect pilot flame is not touching
the thermocouple. This will cause the thermo-
couple to cool. When the thermocouple cools,
the fireplace will shut down.
If pilot flame pattern is incorrect, as shown
in Figure 44
• turn fireplace off (see To Turn Off Gas to
Appliance, page 24)
• see Troubleshooting, page 30
Note: The pilot flame on natural gas units will
have a slight curve, but flame should be blue
and have no yellow or orange color.
Pilot Burner
Figure 43 - Correct Pilot Flame Pattern
(Propane/LP Shown)
Pilot Burner
Figure 44 - Incorrect Pilot Flame Pattern
(Propane/LP Shown)
113110-01H

INSPECTING BURNERS

Thermocouple
Thermocouple
www.desatech.com
bURNER FLAME PATTERN
Figure 45 shows a correct burner flame pat-
tern. Figure 46 shows an incorrect burner
flame pattern. The incorrect burner flame
pattern shows sporadic, irregular flame tip-
ping. The flame should not be dark or have
an orange/reddish tinge.
Note: When using the fireplace the first time,
the flame will be orange for approximately one
hour until the log cures.
If burner flame pattern is incorrect, as shown
in Figure 46
• turn fireplace off (see To Turn Off Gas to
Appliance, page 24)
• see Troubleshooting, page 30
26,000 btu/Hr Units
10,000 btu/Hr Units
Figure 45 - Correct Burner Flame Pattern
26,000 btu/Hr Units
10,000 btu/Hr Units
Figure 46 - Incorrect Burner Flame
Pattern
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