Riello P 300 P/G Instrucciones De Instalación, Uso Y Mantenimiento página 67

B - PUMP
Set by the factory at 25 bar.
C - MOTOR OVER LOAD RELAY
Set by the factory for the three-phase electric supply 400V. Should the electric supply be three-phase 230V the set-
ting has to be modified as indicated at page 8 or 9.
All the installation, maintenance and disassembly operations must be carried out with the electricity supply
disconnected.
DANGER
The installation of the burner must be carried out by qualified personnel, as indicated in this manual and in
compliance with the standards and regulations of the laws in force.
WARNING
When the burner is going to be put in operation, the installer has to carried out the following settings.
A - Maximum fuel delivery
B - Pressure controller
C - Combustion head
D - Air damper
A - ADJUSTMENT OF THE MAXIMUM FUEL DELIVERY
This adjustment is carried out by choosing the proper nozzle from the table here below.
Nozzle
type
N1 - 50°
330
300
275
250
225
200
180
160
If you desire a max. output intermediate between two values indicated in the table, it is useful to choose the nozzle
with higher delivery.
The output decrease could be obtained later, by acting on the pressure controller, see item B.
5482
ADJUSTMENTS NECESSARY TO THE BURNER
Maximum
delivery
kg/h
302
290
270
246
220
188
177
160
Fuel pressure in the
delivery line
manometer (2) fig.3
bar
24
25
25
25
25
25
25
25
11
GB
Fuel max. pressure in the
return line
manometer (3) fig.3
bar
16,5
17,8
17,5
17,3
18,0
18,0
17,8
17,8