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5.11
Combustion head adjustment
The air damper servomotor 4)(Fig. 4), beyond varying the air
output according to the output demand, through a leverage varies
the combustion head adjustment.
This system allows an optimum adjustment also at minimum
firing rate.
With the same servomotor rotation, it is possible to vary the
opening of the combustion head moving the tie-rod on the
holes (1-2-3), (Fig. 16).
3
2
1
D3093
The choice of the hole (1-2-3) to be used is based on diagram
(Fig. 18) according to the maximum output required.
In the factory, the hole is adjusted for the maximum stroke (hole
3, Fig. 16).
If, for combustion reasons, it is necessary to move the spacer
1)(Fig. 17) onto the 1st and 2nd hole of the gear, while the hinge
is positioned to the right, the spacers 4)(Fig. 17) supplied as
standard must be mounted.
No. of holes
3
2
1
0
800
1200 1600 2000
Installation
0
Fig. 16
2400 2800 3200 3600
4000
Max burner output - kW
Proceed as follows (Fig. 17):
unscrew the nuts 2) and remove the tie-rod 3);
unscrew the spacer 1) and place it on the hole that you want;
tighten the spacers 4) to spacer 1) and screw 5)
respectively;
mount the tie-rod and the nuts again.
4
4400 4800 5200
5600 6000 6400 6800 7200 7600 8000
19
GB
D3409
Fig. 17
D9244
Fig. 18
20148124
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