COMBUSTION AIR ADJUSTMENT
The air gate is controlled by the motor-driven reducer.
The adjustment of the positions closed/1st stage open/
max. opening, is effected by acting on the cams turning
anticlockwise to increase the gate opening and clockwise
to decrease it.
By pushing button B, the gate drive system is disengaged,
freeing this for manual movements.
Cam
I
Max. air opening
Cam
II
Air closed, at stop (pre-set)
Cam
III
1st stage ignition air opening
Cam
V
Enabling 2nd stage valve opening
(At least 6° more than cam III)
COMBUSTION HEAD INSPECTION
For possible maintenance operations to the combustion head, follow the instructions given here-under:
1) Untighten the screws A (M8 N°6).
2) Remove the screw B (M12).
3) Extract the hinge pin C.
4) Open the burner as indicated in the figure.
5) After having untightened the 2 screws D, extract
the nozzle holder set E.
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