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The choice depends on the capacity of the boiler chamber bearing in mind that Light Oil has a heating value
(P.C.I.) of 10200 kcal/kg. The scheme shows the range or consumption, in kG/H and kW, of light Oil in
relation to the nozzle size (in GPH) and to pump pressure (in bar). For burners with preheater the effective
range levels are approximately 10% lower than those shown in the scheme.
NOZZLE
GPH
7
1,24
0,40
14,71
1,45
0,50
16,62
1,81
0,60
21,46
2,00
0,65
23,72
2,35
0,75
27,87
2,75
0,85
32,62
3,10
1,00
36,76
3,85
1,25
45,66
4,60
1,50
54,55
5,40
1,75
64,04
6,20
2,00
73,53
6,95
2,25
82,42
7,75
2,5
91,92
Example: Chamber power 29 kW.
With a pump pressure of 12 bar the nearest level is 28,70 kW which corresponds to a nozzle of 0,60GPH.
In cases where the right nozzle is not available it is possible, within the limits shown in the paragraph "PUMP
PRESSURE ADJUSTMENT" to alter the pump pressure in order to obtain the desired capacity.
INSTALLING NOZZLE.
Once the nozzle adapt to the boiler power has been chosen proceed with its mounting onto the burner
following the instructions given in the paragraph "MAINTENANCE" (Fig. A, B, C, C1).
NOZZLE CHOICE
PUMP PRESSURE bar (kg/cm
8
9
1,32
1,40
1,47
15,66
16,60
17,43
1,57
1,65
1,73
18,62
19,57
20,51
1,93
2,01
2,23
22,89
23,83
26,44
2,12
2,25
25,14
26,68
28,46
2,50
2,65
2,80
29,65
31,43
33,21
2,92
3,10
3,27
34,63
36,76
38,78
3,30
3,50
3,67
39,13
41,51
43,52
4,12
4,40
4,61
48,86
52,18
54,67
4,95
5,30
5,55
58,70
62,85
65,82
5,69
6,18
6,46
67,48
73,29
76,61
6,63
7,07
7,43
78,63
83,85
88,12
7,46
7,96
8,38
88,47
94,41
99,39
8,3
8,82
9,28
98,44
104,61
110,06
10
11
12
1,54
1,61
18,26
19,09
1,81
1,89
21,50
22,42
2,32
2,42
27,51
28,70
2,4
2,63
2,74
31,19
32,49
2,95
3,07
34,99
36,41
3,45
3,60
40,92
42,69
3,85
4,02
45,66
47,67
4,82
5,03
57,16
59,65
5,80
6,05
68,78
71,75
6,75
7,06
80,05
83,73
7,75
8,1
91,92
96,07
8,7
9,12
103,17
108,17
9,67
10,17
114,7
120,62
)
2
13
14
1,68
1,75
19,92
20,75
1,97
2,05
23,36
24,31
2,52
2,64
29,88
31,31
2,8
2,91
33,21
34,51
3,20
3,33
37,95
39,49
3,75
3,90
44,47
46,25
4,20
4,38
48,72
51,95
5,25
5,46
62,26
64,75
6,30
6,55
74,72
77,68
7,38
7,96
87,53
91,2
8,42
8,8
99,87
104,37
9,5
9,9
112,67
117,42
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