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NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
Electronic Appliance Checkout
To light the burner, refer to the lighting instruc-
tions on
page 14 and 15
. Ensure the ignitor
lights the pilot. The pilot flame should engulf the
flame sensor as shown in
Figure 12.
Figure 12
With proper care and maintenance, your ap-
pliance will provide many years of enjoy-
ment. If you should experience any problem,
first refer to the trouble shooting guide in this
manual. If problem persists, contact your
Lennox distributor.
Figure 11
Figure 7
MPD-3328 MODEL
Carefully position the ceramic fiber logs and twigs over the burner as shown in
Figures 7 (MPD-
3328), 8 (MPD-3530) or 9 (MPD-4035, MPD-4540)
. For more detailed placement instructions,
refer to the LOG PLACEMENT GUIDE accompanying this document.
Proper twig placement is critical to prevent sooting. Twigs should be placed in the gaps between
the flame peaks and should be positioned so that at no time they impinge the flames.
Figure 8
MPD-3530 MODEL
Figure 9
MPD-4035 AND MPD-4540 MODEL
Figure 10
¹⁄₈" Min
(3 mm)
Thermocouple
Ignitor Rod
Hood
³⁄₈" Min
(9 mm)
Thermopile
MILLIVOLT HONEYWELL
Pilot
Nozzels
ELECTRONIC
Proper Flame
Adjustment
Pilot
Nozzle
3/8 To 1/2 Inch
(9 mm to 13 mm)
Ground
Electrode
Flame Rod
Hot Surface
Igniter
SIT MILLIVOLT
Thermocouple
Hood
Ignitor Rod
³⁄₈" Min
(9 mm)
Thermopile
Pilot
Nozzels