Air Damper Adjustment - Riello G20I Instrucciones De Instalación, Montaje Y Funcionamiento

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Combustion head settings indicated in the schedule are valid for most cases.
The setting of the fan output according to the installation should normally be done only through the air
damper. Should one subsequently want to retouch also the setting of the combustion head, with the
burner running, operate on the rod (1) with a 6 mm spanner (2) as follows:
Turn to the right: (sign
volume of air entering the combustion chamber and
thus diminishing its pressure.
There is a reduction of CO
flame to the air diffuser disc improves. (Setting advisa-
ble for ignitions at low temperatures).
Turn to the left: (sign
ume of air entering the combustion chamber and thus
increasing its pressure. The CO
adhesion of the flame to the diffuser 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 num-
ber of turns.
3

AIR DAMPER ADJUSTMENT

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 sched-
ule (3);
– 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 18 kg/h remove the panel
fitted inside the metal cover. (See
figure).
2356
+
), in order to increase the
and the adhesion of the
2
), in order to reduce the vol-
improves and the
2
:
8
GB
2
1
6
D5285
PANEL
S7352
3

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