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8.5
Air damper adjustment
The air damper is set in factory. This regulation is purely indica-
tive.
Each installation however, has its own unpredictable working
conditions: actual nozzle output; positive or negative pressure in
the combustion-chamber, the need of excess air, etc.
All these conditions may require a different air damper setting.
8.5.1
Only for code 3518465 - 3514260
The air setting is performed by mean of two independent damp-
ers (see Fig. 16 and Fig. 17).
Main air damper (A) - Fig. 16
The main air damper can be set in either of two positions. To set
the positions of the damper, proceed as follows:
Remove the secondary air damper (B) loosing the screws 1).
Loosen the screw 2) and rotate the main air damper (A) to
the required position.
Retighten the screw 2) and put back the secondary air
damper (B).
8.6
Electrodes setting
The position of the electrodes cannot be regulat-
ed. In case of failure, check that the measure-
ments as shown on the figure are respected.
WARNING
Before removing or assembling the nozzle, loosen the screw (A,
Fig. 18) and move the electrodes ahead.
2903310
Start-up, calibration and operation of the burner
4 ±
0.3 mm
D5230
20
GB
A
2
D7532
A
2 - 2.5
B
1
Fig. 16
mm
Fig. 18
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