Riello RL 70 Installation, Use And Maintenance Instructions page 51

7.1.2 Electrical wiring factory-set
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The burners leave the factory preset for 400V
power supply.
If 230V power supply is used, change the motor
WARNING
connection from star to delta and change the set-
ting of the thermal cut-out as well.
NOTE:
In case of remote-reset, connect a push-button with a nor-
mally open contact (NA) between the terminal 3 and the neu-
tral of the control box (for example, terminals 15, 16, 17 and
18).
Electrical system
Key to layout (Fig. 19)
CMV
FR
I1
I2
MB
MV
RMO88.53A2
RT
TA
TB
V1
V2
VS
XP4
XP7
19
GB
Motor contactor
Photocell
Switch: burner off - on
Switch: 1st - 2nd stage operation
Terminal strip
Fan motor
Control box
Thermal cut-out
Ignition transformer
Burner ground (earth) connection
1st stage solenoid valve
2nd stage solenoid valve
Safety solenoid valve
4 pole socket
7 pole socket
Fig. 19
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