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NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
LENNOX CRESTLINE™ SERIES B-VENT GAS FIREPLACES • 36"/42" LSBV MODELS • CARE AND OPERATION INSTRUCTIONS
Figure 9
Figure 8
Millivolt Appliance Checkout
The pilot ame should be steady, not lifting
or floating. Flame should be blue in color with
traces of orange at the outer edge.
The top 3/8" (9 mm) at the pilot generator
(thermopile) should be engulfed in the pilot
ame. The ame should project 1" (25 mm)
beyond the hood at all three ports (Figure 9 -
Millivolt section).
Figure 7
Orifice
Air Shutter
Burner Tube
Adjusting
Set Screw
Adjustment
To adjust the ame, position the air shutter
to the nominal setting (see Figure 7 ). Allow
the burner to operate for at least 30 minutes.
Observe the flame continuously.
If it appears weak or sooty as previously de-
scribed, adjust the air shutter open or closed
until desired effect is achieved.
Note: If the flame still appears anemic with the
air shutter closed all the way (usually a result of
lengthy vertical venting runs), turn off the appli-
ance, turn off the gas supply, wait for the parts
to cool and access the air shutter. The shutter is
prevented from actually closing by a tab that is
bent over into the opening. Remove this obstruc-
tion by bending back. Reassemble and restart
the appliance and after 24 minutes reobserve
the flame. Adjust the air shutter as described.
Electronic Appliance Checkout
Light the burner, refer to the Lightilng Instruc-
tions in this manual. Ensure the ignitor lights
the pilot. The pilot flame should engulf the flame
rod as shown in Figure 9 - Electronic section.
With proper care and maintenance, your appli-
ance will provide many years of enjoyment. If
you should experience any problem, rst refer
to the trouble shooting guide in this manual. If
problem persists, contact your Lennox Dealer.
Logs and Glowing Embers (Rockwool)
Placement
WARNING: LOGS GET VERY HOT AND
WILL REMAIN HOT UP TO ONE HOUR
AFTER GAS SUPPLY IS TURNED OFF.
HANDLE ONLY WHEN LOGS ARE COOL.
TURN OFF ALL ELECTRICITY TO THE AP-
PLIANCE BEFORE YOU INSTALL GRATE
AND LOGS.
Factory Air
Models Shutter Setting
Inches (mm)
LSBV-3628
Gas
Type
Natural 1/8" (3.175 mm)
Propane 1/2" (12.7 mm)
LSBV-4228
Natural 1/8" (3.175 mm)
Propane 1/2" (12.7 mm)
MILLIVOLT
ELECTRONIC
Hood
Ignitor Rod
Pilot
Nozzels
Flame
Sensor
3/8 Min
(9 mm)
Hood
Pilot
Nozzels
Ignitor Rod