DVB Series Direct Vent Gas Fireplace
44
20306740
CLEANING and MAINTENANCE
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 64
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 configura-
tion, and wind effects may cause the flame patterns to
vary.
LG618
DVB log flames
Figure 64 -
Burner Flame Appearance
LG618
W
ARNING
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.
BURNER, PILOT AND CONTROL
COMPARTMENT
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.
FP1943
pilot flame
Thermopile
Thermocouple
FP1943
Millivolt Control
Pilot
Figure 63 -
Pilot Flame
FP2453
hooded pilot flames
Sensor
Thermopile
FP2453
Signature
Command
System Pilot
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 present when
the fireplace is in operation.
Figure 63
. The pilot flame
has three distinct flames, one engulfing the thermopile, one
engulfing the thermocouple, 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.
