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NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Main Burner Factory Air Shutter
Opening Setting - Inches (millimeter)
Model Natural
Gas
Propane
Gas
SLDVT-35
1/32"
(0.795 mm)
3/16"
(4.763 mm)
SLDVT-40
1/32"
(0.795 mm)
3/16"
(4.763 mm)
Burner Air Shutter Adjustment
Adjustment Rod Up
(Fully Open Position)
Air Shutter
Adjustment Rod Down
(minimum air opening
position)
Burner Tube
Adjustment Set-Screw
Electronic Appliance Checkout
To light the burner, refer to the lighting instruc-
tions on Pages 20 & 21. Ensure the igniter
lights the pilot. The pilot flame should engulf
the flame sensor as shown in Figure 13.
Figure 13
ELECTRONIC PILOT ASSEMBLY
Thermocouple
Thermopile
Pilot
Nozzels
SIT MILLIVOLT PILOT ASSEMBLY
3/8" Min.
(9 mm)
Igniter Rod
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 Figures 12 or 13.
To light the burner, refer to the lighting instruc-
tions on Pages 18 & 19.
Ref. Air shutter Patent:
U.S. Pat. 5,553,603
WARRANTY
Your gas appliance is covered by a limited
twenty year warranty. You will find a copy
of the warranty accompanying this manual.
Please read the warranty to be familiar with
its coverage.
Retain this manual. File it with your other
documents for future reference.
PRODUCT REFERENCE INFORMATION
We recommend that you record the following im-
portant information about your fireplace. Please
contact your Lennox dealer for any questions
or concerns. For the number of your nearest
Lennox dealer, please call 1-800-9-LENNOX
REPLACEMENT PARTS
A complete parts list is found at the end of
this manual. Use only parts supplied from the
manufacturer.
With proper care and maintenance, your
appliance will provide many years of enjoy
-
ment. If you should experience any problem,
first refer to the troubleshooting guide in this
manual. If problem persists, contact your
Lennox distributor.
Normally, all parts should be ordered through
your Lennox distributor or dealer. Parts will be
shipped at prevailing prices at time of order.
When ordering repair parts, always give the
following information:
1. The model number of the appliance.
2. The serial number of the appliance.
3. The part number.
4. The description of the part.
5. The quantity required.
6. The installation date of the appliance.
If you encounter any problems or have any ques
-
tions concerning the installation or application
of this system, please contact your distributor,
or Lennox directly:
LENNOX HEARTH PRODUCTS
1110 West Taft Avenue
Orange, CA 92865
visit us at www.Lennox.com
Your Fireplace's Model Number ________________________________________
Your Fireplace's Serial Number ________________________________________
The Date On Which Your Fireplace Was Installed ___________________________
The Type of Gas Your Fireplace Uses ____________________________________
Your Dealer's Name ________________________________________________
Figure 12
Figure 11
CAUTION: Carbon will be pro-
duced if the air shutter is closed
too much. Any damage due to
carboning resulting from improp-
erly setting the air shutter is not
covered under the warranty.
Note: If the ignitor is damaged,
a replacement kit is available,
order Catalog Number 87L54.
ELECTRONIC
Pilot
Hood
Sensor
Ignitor