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4.8
Nozzle
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 nozzles every year during
regular maintenance operations.
WARNING
4.8.1
Recommended nozzles
➤ Fluidics
type N2
Intermediate flow rates may be obtained by choosing the nozzle
with a nominal flow rate slightly higher than that actually required.
MODULATING PRESSURE
BURNER MODEL
RLS
RLS
RLS
RLS
300
400
500
650
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
angle 45°
NOZZLE
Nominal
Fluidics
RLS
size
N2 45°
800
kg/h
Code
130
3045477
150
3045479
175
3045481
175
3045481
200
3045483
250
3045487
250
3045487
275
3045489
300
3045491
325
3045493
X
325
3045493
X
350
3045495
X
350
3045495
X
400
3045499
X
400
3045499
X
500
3045503
X
500
3045503
X
525
3045504
X
525
3045504
X
575
3045506
X
600
3045507
X
650
3045508
X
650
3045508
X
700
3045509
X
700
3045509
X
750
3045510
X
750
3045510
Installation
The use of nozzles other than those specified by the
Manufacturer and inadequate regular maintenance
may result into emission limits non-conforming to
CAUTION
the values set forth by the regulations in force, and
in extremely serious cases, into potential hazards to
people and objects.
The manufacturing company shall not be liable for
any such damage arising from non observance of
the requirements contained in this manual.
HIGH FIRE
By-pass
Flow rate
pressure
PSI
kg/h
270
105,0
264
125,0
258
149,4
260
156,3
267
187,5
260
211,3
262
218,8
268
250,0
257
256,3
257
281,3
261
295,3
258
304,7
260
312,5
232
343,8
239
368,8
249
406,3
254
425,0
247
437,5
251
468,8
245
500,0
245
531,3
233
552,5
236
562,5
226
593,8
230
625,0
244
656,3
247
674,4
25
GB
LOW FIRE
By-pass
Flow rate
pressure
GPH
PSI
GPH
33,6
100
8,3
40,0
100
11,8
47,8
100
13,8
50,0
100
13,8
60,0
100
15,0
67,6
100
16,6
70,0
100
16,6
80,0
100
19,2
82,0
100
21,4
90,0
100
23,0
94,5
100
23,0
97,5
100
25,6
100,0
100
25,6
110,0
100
33,6
118,0
100
33,6
130,0
100
38,4
136,0
100
38,4
140,0
100
41,6
150,0
100
41,6
160,0
100
42,2
170,0
100
46,4
176,8
100
51,2
180,0
100
51,2
190,0
100
57,6
200,0
100
57,6
210,0
100
64,0
215,8
100
64,0
Supply
pressure
PSI
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
Tab. F
20037168
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