Air Damper Adjustment; Electrode Setting - Riello G20S Installation, Use And Maintenance Instructions

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AIR DAMPER ADJUSTMENT :

The settings indicated in the schedule refer to the burner with its metal cover fitted and the combus-
tion chamber with "zero" depression.
These regulations are purely indicative.
Each installation however, has its own unpredictable working conditions: actual nozzle output; pos-
itive 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 out-
put 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 (3);
– 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 18 kg/h remove the panel fitted inside the metal cover.
(See figure).

ELECTRODE SETTING

Attention:
Before assembling or remov-
ing the nozzle, loosen the
screw (A) and move the
electrodes ahead.
(see fig. 7)
Fig. 7
4 ±
D6303
9 GB
MOVE THE ELECTRODE
HOLDER
TO THE END
0.3 mm
A
PANEL
S7335
BACKWARDS
6.5 ±
0.5 mm
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