Secure C1727 - Page 18

Make connections
Note: Connections shown for mains operated 2x heating zone system. These may vary for
dierent boiler types.
2x heating zone system
A3
N
L
Heating
v
alve 1
Heating
valve 2
N
L
1
2
3 4
2
1.0/1.5 mm
Torque <0.5 Nm
N
L
Heating
valve 1
Heating
valve 2
N
L
1
2
3 4
This diagram is schematic and should be used for guidance only.
*Note : The receiver has voltage free contacts.
A link between terminal L and terminal 2 is
required for mains voltage applications
18