MCS XL 9ERM Manuel D'utilisation Et De Maintenance page 36

Observed problem: Lots of smoke coming out of the heater
Possible causes
A. High altitude.
B. Incorrect pump pressure.
C. Incorrect fuel.
Repair procedure
A. High altitude.
All heaters are designed and tested to function optimally below 3280.8 ft above sea level. Working with a
heater like this one above this altitude may result in a mixture of air and fuel that is no longer balanced
because the air, at these altitudes, is less dense. This unbalance in the air-fuel mixture causes more smoke
to be produced.
If the heater is used above 3280.8 ft, follow the instructions given in the paragraph below "Burner air flow
adjustment".
Burner air flow adjustment
It is good practice to have a combustion rich in comburent air in order to guarantee perfect combustion
without smoke and a harsh odour.
Avoid having a combustion poor in comburent air because, since it does not produce a perfect combustion,
there is black smoke, a harsh odour and flames coming out of the front baffle. If the heater were in such a
condition, as soon as possible increase the air flow in the combustion chamber.
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Figure 30 - Burner air adjustment.
A. Screwdriver, B. Air flow adjustment screw, C. Damper
position indicator, D. Damper.
The air flow adjustment is very well represented in the figure
here on the side (Fig. 30). This type of adjustment is manual.
The air flow is adjusted manually, using a screwdriver, on the
adjustment screw. (B), The indicator on its side (C) instead, is
used to identify the damper position (D) inside the burner
case. By rotating the screw (B) clockwise, the indicator (C)
increases its position and the air flow inside the combustion
chamber increases (combustion rich in comburent air). By
rotating the screw (B) anti-clockwise, the indicator (C)
decreases its position and the air flow inside the combustion
chamber decreases (combustion poor in comburent air).
WARNINGS!!!
ATTENTION!!!
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