Riello 466 M1 Installation, Use And Maintenance Instructions page 45

3.3 ELECTRICAL CONNECTIONS TO THE BURNER TERMINAL STRIP
(to be carried out by the installer)
H Remote lock-out signal
IN Optional switch on-off burner
MB Burner terminal strip
PS Reset push - button
SA High temperature oil alarm
NOTE:
Check the lock-out by darkening the flame sensor after removal of the cover.

ATTENTION HIGH VOLTAGE.
In case of supply 230V without neutral, connect the motor and the pre-heater thank through delta (the "star"

connection is the original one, made for 400V).
NOTE 

In systems where the run of wiring connecting the thermostat exceeds 20 metres in length, or in places where
the burner is subject to particularly disturbing electromagnetic interference (over 10 v/m), you must insert the
relay-interface kit item number 3010386.
2915842
A Ampere
B Ampere
C mm
D mm
TL Limit control device system
TS Safety control device system
T2 Load control system for 2
Load control system for 3
T3
7
GB

D2619
230V 400V
T25 T25
T50 T35
2
2,5 2,5
2
10 6
nd
stage
rd
stage