Lanair MXD300 User Manual
Page 34
Section 12 - Flame Adjustment
30
Lift the inspection port cover on the front of the combustion chamber to observe the flame.
The flame tips should extend 3/4 of the way into the combustion chamber. When the unit is
adjusted properly the ash inside the chamber will be white to off white.
Flame tips touching the target brick (end of the chamber) will cause combustion chamber
damage. This condition may be caused by a worn nozzle, or excess burner fuel pressure.
When this condition exists, the ash in the chamber will
be brown to black.
BAD FLAME
The flame is too big, creating an over-
fire condition
BAD FLAME
The flame is too short
GOOD FLAME
The flame length is approximately 3/4
of the chamber
Figure 11
Figure 12
Figure 13
NOTE: ALWAYS WEAR EYE, FACE AND BREATHING PROTECTION AND
PROTECTIVE CLOTHING WHEN INSPECTING OR ADJUSTING FLAME.
!
QUESTIONS?... Contact Customer Service at 1-888-370-6531 M-F 8:00 am- 4:15 pm CST
Flame Adjustment - Visual
Flame is over-fired (Fig. 11).
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Flame is under-fired (Fig. 12)
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