Table of Contents
Advertisement
5.10
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.
Fit the nozzle with a pipe wrench (24 mm), passing through the
central opening of the flame stability disc (Fig. 15).
D9248
Fit the nozzles on the nozzle holder without the fuel interception
rod.
To calibrate the flow rate range within which the nozzle should
operate, it is necessary to adjust the fuel pressure on the nozzle
return line, according to Tab. I and Tab. J.
Do not use any sealing products such as:
gaskets, tape or sealants.
Be careful to avoid damaging the nozzle
sealing seat.
ATTENTION
The nozzle must be screwed into place tightly
but not to the maximum torque value
provided by the wrench.
20148124
Installation
damage
arising
from
non-
40 mm
Fig. 15
5.10.1 Recommended nozzle
•
Bergonzo type B5 45°
•
Fluidics type N4 45°
For intermediate delivery levels, choose the nozzle with delivery
slightly higher than that effectively required.
Complete range of nozzles:
Bergonzo type B5 45°
350 - 375 - 400 - 425 - 450 - 475 - 500 - 525 - 550 - 575 -
600 - 650 - 700 - 750. Normally, atomisation angles of 45°
are recommended.
kg/h
Delivery
pressure
bar
375
20
20
550
20
20
650
20
20
750
25
25
Fluidics type N4 45°:
375 - 400 - 450 - 500 - 550 - 600 - 650 - 700 - 750. Normally,
atomisation angles of 45° are recommended.
kg/h
Delivery
pressure
bar
375
20
20
550
20
20
650
20
20
750
25
25
18
GB
Return
kg/h
pressure
bar
11.5
147
17
295
10
170
17
421
8
180
16.5
565
11.5
227
20.5
675
Return
kg/h
pressure
bar
12
147
18.5
295
7
170
16
421
6
180
17
565
17
227
22
675
kW
1750
3500
2000
5000
2150
6650
2700
8000
Tab. I
kW
1750
3500
2000
5000
2150
6650
2700
8000
Tab. J
Advertisement
Table of Contents
