Burner Air Shutter Adjustment Procedure; Electronic Appliance Inspection - Lennox MDLX40IN-PV Care And Operation Instructions Manual

LENNOX HEARTH PRODUCTS • MONTEBELLO

Burner Air Shutter Adjustment Procedure

WARNING
• Air shutter adjustment
should only be performed
by a qualified professional
service technician.
• Ensure that the front glass
door assembly is in place
and sealed After adjustment.
CAUTION
Soot will be produced if the
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
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 following paragraphs address burner
adjustment concerns and procedures.
When lit for the first time, this appliance will emit
a slight odor for an hour or two. This is due to
the "burn-in" of internal paints and lubricants
used in the manufacturing process.
DLX POWER VENT DV GAS FIREPLACES (MDLX40/45IN-PV) • CARE AND OPERATION INSTRUCTIONS
®
Adjustment
To adjust the flame, move the adjustment air
shutter (located on the lower venturi) back or
forward to increase or reduce the air shutter
opening, respectively. Position the air shutter to
the factory setting as shown in Table 8. Allow
the burner to operate for at least 15 minutes.
Observe the flame continuously. If it appears
weak or sooty as previously described, adjust
the air shutter until the flame appearance is
as desired.
When satisfied that the appliance operates
properly, finish the installation. Leave the wall
ON/REMOTE/OFF switch in REMOTE position
and turn the remote switch OFF.
Air Shutter
Opening
Venturi
Orifice
Gas Valve
Burner
Venturi
Model
MDLX40IN-PV
MDLX45IN-PV
Table 8: Main Burner Factory Air
Shutter Opening Setting
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

Electronic Appliance Inspection

To light the burner, refer to the lighting
instructions on Page 20. Ensure the igniter
lights the pilot. The pilot flame should engulf
the flame sensor rod as shown in Figure 20.
Flame
Sensor
Rod
Pilot
Nozzels
Figure 19: Electronic Pilot
Assembly—Proper Pilot
Flame Appearance
Natural Gas
1/8 in. (3.18 mm)
1/8 in. (3.18 mm)
Igniter
Rod
Pilot Hood
17