74D3001
44
DVBL7 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 flames from the pilot should be visually checked as
soon as the heater is installed and periodically during
normal operation.
the pilot flame must always be pres-
ent when the fireplace is in operation.
Figure 55
. The
pilot flame has three distinct flames, one engulfing the
thermopile, one engulfing 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 flames 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 flame should be
yellow and slightly taller than the rear log.
Figure 56
If the flame 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. If the back holes are clear, add more rock wool to the
center of the burner. Replace logs.
NOTE: The type of installation, vent system
configuration, and wind effects may cause the flame
patterns to vary.
cLeanInG anD maIntenance
w
arn
In
G
turn off gas before servicing fireplace. It
is recommended that a qualified service
technician perform these check-ups at the
beginning of each heating season
LG614
DVBL log flames
LG614
Figure 56 -
Burner Flame Appearance
Figure 55 -
Pilot Flame
Thermopile
Thermocouple
FP1943
pilot flame
FP1943
FP2453
hooded pilot flames
Sensor
Thermopile
FP453
Signature
command
System pilot
millivolt
control
pilot
