Vanguard VMH26TNC - Manual (Page 22)

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Thermocouple
Pilot Burner
Figure 31 - Correct Pilot Flame Pattern
(Propane/LP Shown)
Thermocouple
Pilot Burner
Figure 32 - Incorrect Pilot Flame Pattern
(Propane/LP Shown)
BURNER FLAME PATTERN
Figure 33 shows a correct burner flame pat-
tern. Figure 34 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 fireplace for the first time,
flame will be orange for approximately 1 hour
until log cures.
If burner flame pattern is incorrect, as shown
in Figure 34
• turn fireplace off (see To Turn Off Gas to
Appliance, page 21)
• see Troubleshooting, page 24
Figure 33 - Correct Burner Flame Pattern
Figure 34 - Incorrect Burner Flame
Pattern
InsPeCTIng BURneR
Check pilot flame pattern and burner flame
pattern often.
PILOT FLAME PATTERN
Figure 31 shows a correct pilot flame pattern.
Figure 32 shows an incorrect pilot flame pat-
tern. The incorrect pilot flame is not properly
heating the thermocouple. This will cause
thermocouple to cool. When thermocouple
cools, the fireplace will shut down.
If pilot flame pattern is incorrect, as shown
in Figure 32
• turn fireplace off (see To Turn Off Gas to
Appliance, page 21)
• see Troubleshooting, page 24
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.