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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.
Similarly to servomotor rotation, it is possible to vary the opening
of the combustion head moving the tie-rod on the holes (5-6-7-8-
10)(Fig. 16).
20062792
Installation
The selection of the hole to be used is determined based on the
maximum output requested, as illustrated in Tab. J.
In the factory, the hole is adjusted for the maximum stroke (hole
10, Fig. 16).
Leverage hole
5
5
8
8
5
5
6
10
The gas pipes leave the factory calibrated at
notch 1.
The adjustment shown in Fig. 17 allows the gas
Fig. 16
WARNING
pipes to be positioned in the best way for the
application on which the burner is installed (e.g.
boilers with flame inversion chamber).
19
GB
Output (kW)
From
1200
3750
6700
8600
1500
5500
7500
9600
20077710
To
3750
6700
8600
10600
5500
7500
9600
11500
Tab. J
Fig. 17
20148180
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