2351
9
GB
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);
– 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).
ELECTRODE SETTING
BURNER START-UP CYCLE
PANEL
D5287
Attention:
Before assembling or removing the nozzle, loosen
the screw (A) and move the electrodes ahead.
4
±
0.3 mm
D5288
A
4.5
±
0.5 mm
MOVE THE ELECTRODE
HOLDER BACKWARDS TO
THE END
Normal
Lock-out, due to light-failure
Thermostat
Motor
Ignition transformer
Valve
Flame
Lock-out lamp
~
12s
D5229
~
12s
~
5s
