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8.5
Pump pressure
The pump leaves the factory set for kerosene working.
10 bar: maximum pressure for kerosene.
8.6
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.
Only for code 20056754 and 20056755
The air setting is performed by mean of two inde-
pendent dampers (Fig. 21 and Fig. 22).
WARNING
8.6.1
Main air damper
The main air damper A)(Fig. 21) can be set in either of:
– two positions for burenr code 20056754;
– three positions for burenr code 20056755.
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).
8.6.2
Secondary air damper
The purpose of this damper B)(Fig. 22) is to perform a fine-tuning
of the inlet air.
Tuning of this device is possible acting of the screw 3)(Fig. 22).
20068634
Start-up, calibration and operation of the burner
20056754
20056755
E9172
20
GB
20068683
3
B
Fig. 21
Fig. 22
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