DVB7 Series Direct Vent Gas Fireplace
44
54D7051
CleANING and MAINteNANCe
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 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 61
. 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.
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 62
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.
LG618
DVB log flames
Figure 62 -
Burner Flame Appearance
LG618
FP1943
pilot flame
Thermopile
Thermocouple
FP1943
Millivolt Control
Pilot
Figure 61 -
Pilot Flame
FP2453
hooded pilot flames
Sensor
Thermopile
FP453
Signature
Command
System Pilot