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B-VENT GAS FIREPLACES • MODELS SLBV-35, SLBV-40 • INSTALLATION INSTRUCTIONS
Main Burner Factory Air Shutter
Opening Setting - Inches (millimeter)
Model Nat.Gas Propane Gas
SLBV-35 1/32 (0.794) 1/16" (1.587)
SLBV-40 1/32 (0.794) 3/16" (4.763)
Adjustment
Rod Up
(Fully Open
Position)
Air Shutter
Adjustment Rod Down
min. air opening position)
Burner
Tube
Adjustment Set-Screw
Figure 26: Burner Air Shutter Adjustment
Ref. Air shutter Patent:
U.S. Pat. 5,553,603
Figure 27: Burner Flame Appearance – Model SLBV-35
Figure 28: Burner Flame Appearance – Model SLBV-40
1. Locate adjustment rod and adjust air shutter to the standard set-
ting as shown in Figure 26 (adjustment rod is located in the lower
control compartment).
Note: Move the adjustment rod DOWN to decrease air
and UP to increase air.
2. Light appliance (follow lighting procedure on lighting label in con-
trol compartment or see the Care and Operation manual).
3. Allow the burner to operate for at least 15 minutes while observing
the flame continuously to ensure that the proper flame appearance has
been achieved (see Figure 27 and 28). If the following conditions
are present, adjust accordingly:
• If ame appears weak or sooty, adjust the air shutter, incremen-
tally, to a more open position until the proper ame appearance is
achieved.
• If ame stays lowered blue, adjust the air shutter, incrementally,
to a more closed position until the proper flame appearance is
achieved.
4. Leave the control knob (off/pilot/on) in the ON position and the
burner OFF/ON switch OFF (and remote switches, if applicable).
5. When satised that the burner ame appearance is normal, re-
install the lower control compartment door then proceed to finish the
installation.
Burner Air Shutter Adjustment Procedure
21
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
WARNING
• Air shutter adjustment should only be performed
by a qualified professional service technician.
• Ensure front glass panel are in place and sealed
during adjustment.
CAUTION
• Soot will be produced if the air shutter is closed
too much. Any damage due to sooting resulting
from improperly setting the air shutter is not
covered under the warranty.
• The air shutter door and nearby appliance surfaces
are hot. Exercise caution to avoid injury while
adjusting flame appearance.