Wiring Diagrams - Ferroli OPERA 70 Instructions For Use, Installation And Maintenance

OPERA

4.6 Wiring diagrams

ATTENTION: Remove the jumper on the terminal block before connecting the room thermostat or remote timer
control.
ATTENTION: To connect the 3-way valve (terminals 13 - 14 - 15), refer to the diagrams of fig. 89 and fig. 90.
B
K1
A
fig. 89- Connection of the 3-way valve with 2 wires
ATTENTION: In case of instability in the reading of the 0-10V signal by the electronic controller, it is advisable
to connect the signal reference to ground, and insert a 10K resistor in parallel, as per fig. 91.
EN
L N 95
fig. 91-
cod. 3541R964 - Rev. 00 - 10/2021
K1
B N
C
A
K2
fig. 90- Connection of the 3-way valve with 3 wires
DHW
L N 348
CH
197