Desa VMH10TPC - Manual (Page 29)

www.desatech.com 112462-01F 29
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.
AUTO/OFF/
ON Switch
Figure 45 - AUTO/OFF/ON Blower Switch
OPERATING FIREPLACE
Continued
INSPECTING BURNERS
Check pilot flame pattern and burner flame pat-
terns often.
PILOT FLAME PATTERN
Figure 46 shows a correct pilot flame pattern. Figure
47 shows an incorrect pilot flame pattern. The incor-
rect pilot flame is not touching 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 47
• turn fireplace off (see To Turn Off Gas to Appli-
ance, page 25 for Thermostat-Controlled Mod -
els or page 27 for Remote-Ready Models)
• see Troubleshooting, page 31
Note:
The correct pilot flame on natural gas units
will have a slight curve, but flame should be blue
and have no yellow or orange color.
Figure 46 - Correct Pilot Flame Pattern
(Propane/LP Remote-Ready Shown)
Pilot Burner
Thermocouple
Figure 47 - Incorrect Pilot Flame Pattern
(Propane/LP Remote-Ready Shown)
Pilot Burner
Thermocouple
Figure 48 - Correct Burner Flame Pattern
Figure 49 - Incorrect Burner Flame Pattern
BURNER FLAME PATTERN
Figure 48 shows a correct burner flame pattern.
Figure 49 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 49
• turn fireplace off (see To Turn Off Gas to Appli-
ance, page 25 for Thermostat-Controlled Mod-
els or page 27 for Remote-Ready Models)
• see Troubleshooting, page 31