Vanguard Heating VMH26TPC - Manual (Page 21)

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OPERATING FIREPLACE
Continued
OPERATING
BLOWER
This blower has three settings: ON, OFF, and
AUTO. In the ON position, the blower will oper-
ate constantly. In the OFF position, the blower
will not operate. In the AUTO position, the
blower will start when the thermostat senses a
sufficient increase in firebox temperature.
Note:
Your fireplace and thermostat blower
will not turn on and off at the same time. The
fireplace may run for several minutes before the
blower turns on. After the heater modulates to
the pilot position, the blower will continue to
run. The blower will shut off after the firebox
temperature decreases.
Note:
It is safe to operate fireplace with blower
turned off. However, the blower helps distribute
heated air from the fireplace.
OF F
ON
Auto/Off/On
Switch
Figure 30 - Auto/Off/On Switch
INSPECTING BURNER
Check pilot flame pattern and burner flame pat-
tern often.
PILOT FLAME PATTERN
Figure 32 shows a correct pilot flame pattern.
Figure 33 shows an incorrect pilot flame pattern.
The incorrect pilot flame is not properly heating the
thermocouple. This will cause the thermocouple to
cool. When the thermocouple cools, the fireplace
will shut down.
If pilot flame pattern is incorrect, as shown in
Figure 33
• turn fireplace off (see To Turn Off Gas to Ap-
pliance, page 20)
• see Troubleshooting, page 23
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.
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 pattern.
Figure 34 shows an incorrect burner flame pattern.
The incorrect burner flame pattern shows sporadic,
irregular flame tipping. 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 34
• turn fireplace off (see To Turn Off Gas to Ap-
pliance , page 20)
• see Troubleshooting, page 23
Figure 33 - Correct Burner Flame Pattern
Figure 34 - Incorrect Burner Flame
Pattern