17
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
WARNINGS
•
Air shutter adjustment should
only be performed by a quali-
fied professional service
technician.
•
Ensure front glass panel are
in place and sealed during
adjustment.
CAUTIONS
•
Carbon will be produced if the
air shutter is closed too much.
Any damage due to carboning
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.
Burner Air Shutter Adjustment Procedure
SUPERIOR
®
DIRECT-VENT GAS FIREPLACES • MODELS SLDVT-30/35/40/45 • CARE AND OPERATION INSTRUCTIONS
Electronic Appliance Checkout
To light the burner, refer to the lighting instruc-
tions on
Page 24
. Ensure the igniter lights the
pilot. The pilot flame should engulf the flame
sensor as shown in
Figure 17.
ELECTRONIC PILOT ASSEMBLY
Thermocouple
Thermopile
Pilot
Nozzels
SIT MILLIVOLT PILOT ASSEMBLY
3/8" Min.
(9 mm)
Igniter Rod
Pilot Hood
Proper Pilot Flame Appearance
Millivolt Appliance Checkout
The pilot flame 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" (10 mm) at the pilot generator
(thermopile) and the top 1/8" minimum (tip)
of the quick drop out thermocouple should be
engulfed in the pilot flame. The flame should
project 1" (25 mm) beyond the hood at all three
ports (see
Figure 16
)
.
To light the burner, refer to the lighting instruc-
tions on
Page 22.
Figure 16
Note: If the igniter is damaged, a
replacement kit is available, order
Catalog Number 87L54.
1. Locate adjustment rod and adjust air shutter
to the standard setting as shown in
Figure
15
(adjustment rod is located in the lower
control compartment).
Note:
Rotating the adjustment rod down
to decrease air and up to increase air.
2. Light appliance (follow lighting procedure
on lighting label in control compartment or
see the lighting instructions,
Pages 22
and
24
in this manual).
3. Allow the burner to operate for at least 15
minutes while observing the flame con-
tinuously to ensure that the proper flame
appearance has been achieved (see
Figures
12, 13 or 14
). If the following conditions
are present, adjust accordingly.
• If flame appears weak or sooty, adjust
the air shutter, incrementally, to a more
open position until the proper flame
appearance is achieved.
• If flame stays lowered blue, adjust the
air shutter, incrementally, to a more
closed position until the proper flame
appearance is achieved.
ELECTRONIC
Pilot
Hood
Sensor
Igniter
Burner Air Shutter Adjustment
Figure 15
Figure 17
Main Burner Factory Air Shutter
Opening Setting
Inches (millimeter)
Model
Natural
Gas
Propane
Gas
SLDVT-30/35
1/32
(0.795)
3/16"
(4.763)
SLDVT-40/45
1/32
(0.795)
3/16"
(4.763)
Adjustment
Rod Up
(Fully Open
Position)
Air Shutter
Adjustment Rod Down min.
air opening position)
Burner
Tube
Adjustment Set-Screw
Ref. Air shutter Patent:
U.S. Pat. 5,553,603
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 satisfied that the burner flame ap-
pearance is normal, close the lower control
compartment door (see
Figures
12, 13 and
14
on
Page 16
).
