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4
AIR DAMPER ADJUSTMENT:
The mobile air damper (1) operated by the jack (2)
assures the complete opening of the air intake.
The regulation of the air-rate is made by adjusting the
fixed air damper (3), after loosing the screws (4). When
the optimal regulation is reached, screw tight the
screws (4) to assure a free movement of the mobile air
damper (1).
The settings indicated in the schedule refer to the burner with
its metal cover fitted and the combustion chamber with "zero"
depression.
These regulations are purely indicative.
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.
It is important to take account of the fact that the air
output of the fan differs according to whether the
burner has its metal cover fitted or not.
Therefore we recommended to proceed as follows:
– adjust the air damper as indicated in the schedule (4);
– mount the cover, simply by means of the upper
screw;
– check smoke number;
– should it become necessary to modify the air
output, remove the cover by loosening the screw,
adjust the air damper, remount the cover and finally
recheck the smoke number.
NOTE: When the burner works at a firing rate
higher than 17 kg/h remove the panel
fitted inside the metal cover (see figure).
ELECTRODE SETTING
Attention:
Before assembling or removing the nozzle, loosen the
screw (A) and move the electrodes ahead.
2403
4 ±
0.3 mm
D5288
A
8
1
4
MOVE THE ELECTRODE HOLDER
BACKWARDS TO THE END
2
3
4
D5550
PANEL
D5682
6.5 ±
0.5 mm
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