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5.8
Combustion head adjustment
To adjust, proceed as follows:
loosen the screw A)(Fig. 12), move the elbow B) so that the
rear plate of the coupling (C) coincides with the set point;
tighten the screw A).
Example:
The burner is installed in a 72 kW boiler.
Considering an efficiency of 90%, the burner must supply around
80 kW.
The diagram (Fig. 13) shows that for this output the adjustment
must be made on notch 3.
The diagram is to be used only for initial settings,. To ensure
good air pressure switch operation it may be necessary to reduce
this combustion head opening (notch toward pos. 0).
5.9
Air damper servomotor adjustment
To adjust the servomotor 3)(Fig. 14) proceed as follows:
CAM I
STAND-BY
Cam I is adjusted in the factory and corresponds to the air damp-
er being completely closed. (Reference value 0°).
Do not tamper with this adjustment for any reason.
WARNING
CAM V
STOP - FIRST STAGE
Cam V adjusts the position of the damper of 1° stage 2)(Fig. 14).
It should be adjusted going down (damper closing) using the mi-
crometric screw (Fig. 15).
The final position is obtained after the adjustment of the 2° stage.
20063795
Installation
C
A
B
kW
kcal/h
110
90,000
100
80,000
90
70,000
80
70
60,000
60
50,000
50
40,000
40
30,000
30
20,000
20
0
E9085
16
GB
1
2
3
Notch No.
1
S7015
Fig. 12
D5178
4
5
Fig. 13
3
2
Fig. 14
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