Lennox Hearth Products MPDT-3328CPM-B Installation Instructions Manual page 33

WARNINGS
• Air shutter adjustment should
only be performed by a quali-
fied professional service tech-
nician.
• Ensure front glass panel are
in place and sealed during
adjustment.
CAUTIONS
• 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.
1. Refer to Figures 61, 62 and 63 for prop-
er flame appearance. To adjust the flame,
rotate the adjustment rod toward the back
or toward the front of the fireplace (rod
located in the lower control area). Position
the air shutter to the factory setting as
shown in the table in Figure 64.
2. Light appliance (follow lighting procedure
on lighting label in control compartment
or see the Care and Operation 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. 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 remains 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 satisfied that the burner flame ap-
pearance is normal, re-install the lower
control compartment door then proceed
to finish the installation.
Figure 61
Figure 62
Figure 63
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
MPd-3328 MOdEL
MPd-3530 MOdEL
MPd-4035 ANd MPd-4540 MOdEL
33