48
20306748
MLDV Series Gas Fireplace
BURNER, PILOT AND CONTROL COMPART-
MENT
Keep the control compartment, logs, and burner areas
surrounding the logs clean by vacuuming or brushing at
least twice a year. Make sure the burner porting, pilot air
opening and burner air opening are free of obstructions
at all times.
PILOT FLAME
The
fl
ames from the pilot should be visually checked as
soon as the heater is installed and periodically during
normal operation.
The pilot
fl
ame must always be pres-
ent when the
fi
replace is in operation.
Figure 74.
The
pilot
fl
ame has three distinct
fl
ames, one engul
fi
ng the
thermopile, one engul
fi
ng the thermocouple or sensor, and
the other reaching to the main burner.
BURNER
Inspect area around the injector. Remove any lint or foreign
material with a brush or vacuum.
BURNER FLAME
The
fl
ames from the burner should be visually checked
as soon as the heater is installed and periodically during
normal operation. In normal operation, at full rate, and after
operating for about 15 to 30 minutes, the
fl
ame should be
yellow and slightly taller than the rear log.
Figure 75
If the
fl
ame is blue and only in the center, turn off unit and
let cool. After unit is cool, remove logs and check to make
sure the back holes in the burner are not covered with rock
wool. Replace logs.
NOTE:
The type of installation, vent system con
fi
guration,
and wind effects may cause the
fl
ame patterns to vary.
LG550
Figure 75 -
Burner Flame Appearance
CLEANING AND MAINTENANCE
Turn off gas before servicing
fi
replace. It is
recommended that a quali
fi
ed service technician
perform these check-ups at the beginning of
each heating season.
WARNING
Thermopile
Thermocouple Sensor
FP1943
Figure 74 -
Pilot Flame
Sensor
Thermopile
FP2453
Signature Command System Pilot