48
75D2523
MDV Series Direct Vent Gas Fireplace
cleanIng and maIntenance
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 64.
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.
w
arn
Ing
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
LG671
DVM log flames
Figure 65 -
Burner Flame Appearance
LG671
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 65
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 rock wool is placed correctly. Replace logs.
note:
The type of installation, vent system configuration,
and wind effects may cause the flame patterns to vary.
FP1943
pilot flame
Thermopile
Thermocouple
Figure 64 -
Pilot Flame
FP1943
FP2453
hooded pilot flames
Thermopile
Sensor
FP2453
signature command
system pilot
millivolt pilot
Содержание Direct Vent Gas Fireplace MDV500
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