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8.3
Nozzles installation
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 the manufacturer in the In-
struction and warning booklet should be used.
It is advisable to replace nozzles every year dur-
ing regular maintenance operations.
WARNING
8.4
Pump pressure
The pump leaves the factory set for kerosene working.
10 bar: maximum pressure for kerosene.
8.5
Combustion head setting
This is done when fitting the nozzle, with the blast tube removed.
It depends on the output of the burner and is carried out by rotat-
ing the regulating rod, till the terminal plane of the blast tube is
level with the set-point, as indicated in the schedule.
Combustion head settings indicated in the schedule are valid for
most cases. The setting of the fan output according to the instal-
lation should normally be done only through the air damper.
Turn to the right: in order to increase the volume of air
entering the combustion chamber and thus diminishing its
pressure. There is a reduction of CO
the flame to the air diffuser disc improves. (Setting advisa-
ble for ignitions at low temperatures).
Turn to the left: in order to reduce the volume of air enter-
ing the combustion chamber and thus increasing its pres-
sure. The CO
improves and the adhesion of the flame to
2
the diffuser tends to reduce. (This setting is not advisable
for ignitions at low temperatures).
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 at its end
facilitates counting the number of turns.
3200
Start-up, calibration and operation of the burner
and the adhesion of
2
The use of nozzles other than those specified by
the
maintenance may result into emission limits non-
conforming to the values set forth by the
regulations in force, and in extremely serious
cases, into potential hazards to people and
objects.
CAUTION
The manufacturing company shall not be liable for
any such damage arising from nonobservance of
the requirements contained in this manual.
8.3.1
Nozzles reccomended
Danfoss type S.
Angle 60°: in most cases.
Angle 80°: in case of flame detachment, during ignitions at low
temperatures.
D5398
GB
20
manufacturer
and
inadequate
Terminal plane of the blast tube
Regulating rod
2
5
3
1
Blast tube
regular
Shutter
Fig. 20
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