Nozzle Installation - Riello GI/EMME 1400 Manual

5.8.1 Variation of the air damper tie-rod length
Lengthening the tie-rod is recommended when the air damper
moves within a reduced angle (air damper approx. halfway its
stoke at the maximum output); it is used to avoid a too curved
cam profile.
With the burner off, proceed as follows:
 disengage the articulated coupling 2)(A) of the lever 1);
 loosen the extension 3) from the tie-rod 4) by a few turns;
 reconnect the articulated coupling to the lever and lift the
profile of the cam until setting the index of the air damper to
0 with servomotor at 0°.
5.9

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.
 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.
5.9.1 Recommended nozzle
Select the nozzle, with nominal output slightly higher than the one
actually required, among the following types:
Model Nozzle
Fluidics type N1 (without interception rod)
Fluidics type W2 (with interception rod)
Bergonzo type B3 or B5
(with interception rod)
It is possible to fit also nozzles without interception rod: in this
case there will be no anti-dripping feature on the spray holder.
20162463
Installation
damage arising from non-
Key
1 Lever
2 Articulated coupling
3 Extension
4 Tie-rod
Available nozzles (delivery kg/h):
• Fluidics: 70 - 80 - 90 - 100 - 115 - 130 - 145 - 160 - 180 - 200
- 225 - 250 - 275 - 300 - 330 - 360 - 400 - 450
• Bergonzo: 70 - 80 - 90 - 100 - 125 - 150 - 175 - 200 - 225 -
250 - 275 - 300 - 325 - 350 - 375 - 400 - 425 - 450
Angles of 45-50° are usually recommended; for narrow
combustion chambers use nozzles with 30-35° angles.
To calibrate the delivery range of the nozzle, adjust the fuel
maximum and minimum pressure on the nozzle return line, as
shown in (Fig. 14).
Approximate ration between: Nozzle type and delivery in (%)
- Pressure on the return line
1 - Fluidics N1
2 - Fluidics W2
3 - Bergonzo B3
4 - Bergonzo B5
18 GB
D1389
3
4
1
Pressure on delivery: 25 bar
%)
Delivery (
Fig. 13
D3437
2
Fig. 14