Riello DB 6 LSM C13 Installation, Use And Maintenance Instructions page 62

To calibrate the flow rate range within which the nozzle should
operate, it is necessary to adjust the fuel pressure on the nozzle
return line, according to (Tab. H, Tab. I).
 Do not use any sealing products such as gas-
kets, sealing compound, or tape.
 Be careful to avoid damaging the nozzle seal-
WARNING ing seat.
 The nozzle must be screwed into place tightly
but not to the maximum torque value pro-
vided by the wrench.
4.10.1 Recommended nozzles
• Bergonzo type B5 45°
• Fluidics type N4 45°
For intermediate delivery levels, choose the nozzle with delivery
slightly higher than that effectively required.
Complete range of nozzles:
 Bergonzo type B5 45° 350 - 375 - 400 - 425 - 450 - 475 -
500 - 525 - 550 - 575 - 600 - 650 - 700 - 750. Normally, ato-
misation angles of 45° are recommended.
Delivery
kg/h pressure
bar
20
375
20
20
550
20
20
650
20
25
750
25
 Fluidics type N4 45°: 375 - 400 - 450 - 500 - 550 - 600 - 650
- 700 - 750. Normally, atomisation angles of 45° are recom-
mended.
Delivery
kg/h pressure
bar
20
375
20
20
550
20
20
650
20
25
750
25
20114504
Return
pressure kg/h
bar
11.5 147 1750
17 295 3500
10 170 2000
17 421 5000
8 180 2150
16.5 565 6650
11.5 227 2700
20.5 675 8000
Return
pressure kg/h
bar
12 147 1750
18.5 295 3500
7 170 2000
16 421 5000
6 180 2150
17 565 6650
17 227 2700
22 675 8000
Installation
kW
Example:
Nominal nozzle output:
Tab. H
Maximum output requested:
Pressure on return line:
Required modulating ratio:
Minimum output:
Pressure on return line:
kW
Outlet pressure:
Oil viscosity:
Tab. I
19 GB
S9696
Delivery (%)
800 kg/h
760 kg/h (95%)
20 bar
1:3,8
200 kg/h (25%)
7 bar
25 bar
2 °E
Fig. 19
D8033
Fig. 20