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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, 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
17 kg/h remove the panel fitted inside the metal
cover. (See figure).
ELECTRODES ADJUSTMENTS
Attention:
Before assembling or removing the noz-
zle, loosen the screw (A) and move the
electrodes ahead.
BURNER START-UP CYCLE
Normal
Thermostat
Motor
Ignition transformer
Valve
Flame
Lock-out lamp
2404
~
12s
4 ±
0.3 mm
D6313
A
Lock-out, due to light-failure
~
12s
6
GB
PANEL
D5682
MOVE
THE
ELEC-
TRODE HOLDER BACK-
WARDS TO THE END
6.5 ±
0.5 mm
~
5s
D5229
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