Riello 3438964 Installation, Use And Maintenance Instructions page 45

4. WORKING
4.1 CHOICE OF NOZZLES
First of all state the maximum output required with all three
nozzles in operation.
On the base of the maximum output choose, from table A,
three related nozzles.
Nozzles: 60° - Pump pressure: 25 bar.
rd
3
The references of table B should be followed in case of
need of:
- modification of the pump pressure in order to vary the
output,
- diverse composition of the 3 nozzles group,
- knowledge of the output in 1
4.2 PUMP PRESSURE
The pump pressure is referred to all three nozzles operating.
The pump pressure increases automatically when two noz-
zles are operating and becomes higher with only one nozzle.
Suggested pressure:
- Light oil: 25 bar
- Heavy oil: 28 bar (transformation kit)
Rated nozzles deliveries are listed on the table. 
A tolerance of ±5% concerns the real delivery against the
rated one. 
The pump leaves the factory set at 25 bar.
4.3 ELECTRODE POSITIONING
Position the electrodes according to the dimensions shown in
figure.
4 mm
D11353
2915844
st
1
nd
2
D2741
st nd
and 2 stage.
1 5 mm
Nozzles
A
GPH 60°
st
1
8.00
8.30
8.50
9.00
9.50
10.00 10.00 10.00
10.50 10.50 10.50
11.00 11.00 11.00
12.00 12.00 12.00
13.00 13.00 13.00
13.80 13.80 13.80
14.00 14.00 14.00
15.00 15.00 15.00
15.30 15.30 15.30
16.00 16.00 16.00
B
11 GB
Total output
st
kg/h 1 +2
nd rd
2 3 25 bar
8.00 8.00 150
8.30 8.30 156
8.50 8.50 159
9.00 9.00 168
9.50 9.50 177
186
195
207
228
246
258
264
285
291
300
25 bar 28 bar
GPH
kg/h
8.00 50
8.30 52
8.50 53
9.00 56
9.50 59
10.00 62
10.50 65
11.00 69
12.00 76
13.00 82
13.80 86
14.00 88
15.00 95
15.30 97
16.00 100
nd rd
+3
28 bar
159
165
171
180
189
198
210
219
240
261
279
282
300
–
kg/h
53
55
57
60
63
66
70
73
80
87
93
94
100
102
107