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6.10
Nozzle 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 Riello in
the Instruction and warning booklet should be used.
It is advisable to replace the nozzle once a year
during periodical maintenance.
ATTENTION
The use of nozzles other than those specified by
Riello S.p.A. and inadequate regular 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
observance of the requirements contained in this
manual.
Installation
damage
arising
from
6.10.1 Nozzle selection
If you want a delivery somewhere between the two values shown
in the diagram (Fig. 15), select a nozzle with a higher flow rate.
The reduction in the flow rate is obtained with the pressure
variator.
AVAILABLE NOZZLES
non-
NOZZLES RECOMMENDED:
–
Bergonzo type B5
To calibrate the delivery range of the nozzle, adequately adjust
the fuel maximum and minimum pressure on the nozzle return
line, as shown in diagrams (Fig. 15, Fig. 16, Fig. 17 and Fig. 18
on page 21).
After fitting the nozzle, remove the servomotor protection
cover, and turn the burner on.
After turning on the burner, immediately disconnect the
servomotor from the power supply by opening the connector
located in the electrical control panel. In this way the burner
remains in minimum flow rate operating mode.
Unlock the motor cam of the servomotor by pressing the
release.
Manually and slowly rotate the variable profile cam,
integrally connected to the eccentric. The pressure and the
flow output of the nozzle are at their minimum level when the
servomotor is at the 20° position. The pressure and the flow
output of the nozzle are at their maximum when the
servomotor is at the 130° position. The return line pressure
corrections are possible by changing the eccentric and the
nut with the lock nut.
19
GB
Bergonzo B5
kg/h
150
125
100
90
80
70
200
175
150
125
100
300
275
250
225
200
175
150
450
400
350
325
300
275
250
225
Tab. H
20170392
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