Riello P 140P/NA Installation, Use And Maintenance Instructions page 37

3.3 OVERALL DIMENSIONS
The overall dimensions of the burner are given in fig. 3. Bear in mind that inspection of the combustion head requires the burner to
be opened and the rear part withdrawn on the slide bars. The overall dimensions of the open burner, without casing, is given by
measurement H.
Fig. 3
B
mm A B
P 140P/NA 796 396
P 200P/NA 796 396
P 300P/NA 858 447
P 450P/NA 950 508
 Also with a spacer, upon request.
BOILER PLATE DRILLING - COMBUSTION HEAD PROJECTION
For the combustion head projection carefully follow the boiler manufacturer indications.
A proper protection with refractory material on the combustion head projecting into the combustion chamber shall be made, when
boilers with frontal smoke box are used.
3.4 FIRING RATES
When operating, the burner heat output varies between a minimum and a maximum.
Max. output must be within the firing rate below.
Min. output may rise up to the firing rate dotted section.
The maximum modulation ratio is 1 ÷ 4.
180 18
160 16
140 14
P 140
120 12
100 10
80 8
60 6
40 4
20 2
0 0
0 50
D3698
0 500
2544500
- approximate measurements
A
C
H-H
(1)
C D E-E(1)
400 910 323-433
400 910 352-462
411 1020 376-506
442 1090 435-565
P 300
P 200
100 150 200
1,000 1,500 2,000
.
D
F G H-H(1)
222 467 1390-1390
250 467 1390-1390
295 496 1535-1685
336 525 1665-1820
P 450
250 300 350 400
2,500 3,000 3,500 4,000
5 GB
E-E
(1)
Fig. 4
L
P
L M N P
260 230 M 14 225
260 - M 16 255
260 - M 18 300
310 - M 20 350
450 500
kg/h
4,500 5,000
kW
L
M
M
N