2381
7
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.
ELECTRODE SETTING
4
4
3
D5550
4
1
2
Attention:
Before removing or assembling the
nozzle, loosen the screw
(A)
and
move the electrodes ahead.
2 – 2.5
mm
4
±
0.3 mm
IMPORTANT:
THESE DIMENSIONS
MUST BE OBSERVED
D5230
A
