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TURN TO THE RIGHT: (sign
In order to increase the volume of air entering the com-
bustion chamber and thus diminishing its pressure.
There is a reduction of CO
flame to the air diffuser disc improves.
(Setting advisable for ignitions at low temperatures).
TURN TO THE LEFT: (sign – )
In order to reduce the volume of air entering the com-
bustion chamber and thus increasing its pressure. The
CO
improves and the adhesion of the flame to the dif-
2
fuser tends to reduce.
(This setting is not advisable for ignitions at low temper-
atures).
In any case do not bring the combustion head setting
more than one point away from that indicated in the
schedule. One set-point corresponds to 3 turns of the
rod; a hole (3) at its end facilitates counting the number
of turns.
4
AIR DAMPER ADJUSTMENT , (fig. 4)
The regulation of the air-rate is made by adjusting the
air damper (1), after loosing the screws (2).
When the optimal regulation is reached, screw tight
the screws (2).
The settings indicated in the schedule 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 at
page 5;
– 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 9 kg/h remove the panel fitted inside the
metal cover, (see figure 5).
20013654
+
)
and the adhesion of the
2
6
Fig. 3
Fig. 4
Fig. 5
D7178
GB
2
1
6
D5231
PANEL
3
D5671
1
2
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