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6.7
Recommended nozzles
The burner complies with the emission requirements of the EN
267 standard.
In order to guarantee that emissions do not vary, recommended
and/or alternative nozzles specified by manufacturer in the In-
struction and warning booklet should be used.
It is advisable to replace nozzles every year
during regular maintenance operations.
WARNING
The use of nozzles other than those specified by
manufacturer and inadequate regular mainte-
nance may result into emission limits non-con-
forming to the values set forth by the regulations
in force, and in extremely serious cases, into po-
tential hazards to people and objects.
CAUTION
The manufacturing company shall not be liable for
any such damage arising from non-observance of
the requirements contained in this manual.
To set the delivery range within which the nozzle must work, noz-
zle return line fuel pressure must be adjusted.
6.7.1
Replacing the nozzle
Turn off the burner's power supply using the main
system switch.
DANGER
To replace the nozzle, proceed as follows (Fig. 25):
loosen the nut 1) and take the burner out of the boiler.
Loosen the three screws 1)(Fig. 26) from the collar and
remove the blast tube 2);
loosen the screw 3) and disconnect the high voltage
cables 4);
remove the electrode-stabiliser unit 5);
fix the nozzle-holder 6) with the aid of the wrench, then
replace the nozzle 8);
loosen the nozzle with the aid of a size 16 wrench, and
replace it;
screw in the nozzle again, then reassemble the electrode/
stabiliser unit, respecting the position of the electrodes (see
Fig. 21 on page 25).
Make sure the screw 3)(Fig. 26) is positioned in its
seat 7).
WARNING
Start-up, calibration and operation of the burner
20113969
20130931
27
GB
1
1
2
5
3
8
7
4
Fig. 25
6
Fig. 26
20148481
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