Pump - Ferroli SUN G50 Operating, Installation And Maintenance Instructions

SUN G50 - G70
2.4 Nozzle and Electrodes
Choosing the nozzle
Determine the required fuel flow-rate, based on the heat input of the boiler and the minimum heat
output (Hi) of the fuel used (ref. technical data table in chap. 4). Based on the flow-rate calculated, use
the table below, according to the pump pressure, to determine the most suitable nozzle size (in GPH).
The bold values in the table are the most suitable for burner operation.
Both nozzles should be chosen from the ones indicated in the following table.
The first nozzle determines the burner flow rate in the 1st stage.
The second nozzle words together with the first one and both determine the burner flow rate in the
2nd stage.
The flow rates of the 1st and 2nd stage must come within the values given in the technical data table
in paragraph 4.3.
It is recommended for the 1st-stage nozzle to have a delivery of between 55-60% of the total flow
rate.
The two nozzles supplied can be used when they correspond to the required flow rate. If they
do not, they should be changed with another two whose delivery is suited to the system.
Oil nozzle flow-rate table
The values given in the table are approximate since it is necessary to bear in mind that the nozzle
deliveries may vary by ± 5%.
Nozzle
8 9 10
GPH
3,50 11,90 12,62 13,30
4,00 13,60 14,42 15,20
4,50 15,30 16,22 17,10
5,00 17,00 18,03 19,00
5,50 18,70 19,83 20,90
6,00 20,40 21,63 22,80
6,50 22,10 23,44 23,70
7,00 23,79 25,24 26,60
7,50 25,49 27,04 28,50
8,30 28,21 29,93 31,54
9,50 32,29 34,25 36,10
10,50 35,69 37,86 40,06
12,00 40,80 43,30 45,60
13,80 46,90 49,80 52,40
15,30 52,00 55,20 58,10
Table of spray values
The nozzles are available with different sprays, identified by one or more letters, depending on the
manufacturer. The table shows the most suitable types of spray for the burner.
SPRAY
GB
Pump pressure (bar)
11 12 13 14
13,95 14,57 15,17 15,74
15,94 16,65 17,33 17,99
17,94 18,73 19,50 20,24
19,93 20.82 21,67 22,48
21,92 22.90 23,83 24,73
23,92 24,98 26,00 26,98
25,91
27,06 28,17 29,23
27,90 29,14 30,33 31,48
29,90 31,22 32,50 33,73
33,08 34,55 35,97 37,32
37,87 39,55 41,17 42,72
41,73 43,74 45,41 47,20
47,80 50,00 52,00 54,00
55,00 57,50 59,80 62,10
61,00 63,70 66,30 68,80
Flow-rate at the outlet in kg/h
Angle Type of cone Delavan
60° Full
Cod. 35445644 - 08/2007 (Rev. 00)
15 16 17
16.29 16,83 17,34
18,62 19,23 19,82
20,95 21,63 22,30
23,27 24,04 24,78
25,60 26,44 27,25
27,93 28,84 29,73
30,26 31,25 32,21
32,56 33,65 34,69
34,91 36,05 37,16
38,63 39,90 41,13
44,22 45,67 47,07
48,90 50,50 52,00
55,90 57,70 59,50
64,20 66,30 68,40
71,10 73,60 75,80
Type of nozzle
Monarch Danfoss
S
B AR
18 19 20 21
17,85 18,34 18,81 19,28
20,40 20,95 21,50 22,03
22,95 23,57 24,19 24,78
25,49 26,19 26,87 27,54
28,04 28,81 29,56 30,29
30,59 31,43 32,25 33,04
33,14 34,05 34,94 35,80
35,69 36,67 37,62 38,55
38,24 39,29 40,31 41,31
42,32 43,48 44,61 45,71
48,44 49,77 51,06 52,32
53,50 55,00 56,40 57,80
61,20 62,90 64,50 66,10
70,40 72,30 74,30 76,00
78,00 80,20 82,20 84,30
Steinen Hago Fluidics
S - SS ES SF - S
22
19,73
22,55
25,37
28,19
31,00
33,82
36,64
39,46
42,28
46,79
53,55
59,20
67,60
77,80
86,20
29