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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 tem-
peratures).
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. 8)
The mobile air damper (A) operated by the jack (B)
assures the complete opening of the air intake.
The regulation of the air-rate is made by adjusting the
fixed air damper (C), after loosing the screws (D).
When the optimal regulation is reached, screw tight
the screws (D) to assure a free movement of the
mobile air damper (A).
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 combus-
tion-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 6;
– mount the cover, simply by means of the upper
screw;
– check smoke number;
– should it become necessary to modify the air out-
put, 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 9).
2351
+
)
and the adhesion of the
2
Fig. 7
Fig. 8
A
D
Fig. 9
7
GB
2
1
6
D5555
PANEL
3
D8068
B
C
D
D5287
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