Wiring cases

Refer to the wiring diagram below for connecting volt-free and 230V AC wiring.

Volt free wiring (directly to the boiler)

The volt free wiring switches any voltage (not exceeding 230 V AC) supplied by the heat source when calling for heat.

1. Insert the pump supply voltage onto L1, N1, and connect the Earth.

2. Insert output supply to pump onto L2, N2, and connect the Earth.

3. Insert supply voltage onto B1 for boiler supply and output to boiler switch return on B2.

4. Connect L and N from a 3 A main supply.

230 V AC Wiring (to a zone valve)

The zone valve wiring centre allows you to switch each zone on and off individually, heating only the rooms you want at any given time.

1. Insert the heat probe onto T1 and T2 (not polarity specific).

2. Insert output supply to pump onto L2, N2, and connect the Earth.

3. Connect N1 with N3.

4. Connect L1, B1, and L3 with a Wago or connection block.

5. Connect B2 to zone valve.

6. Connect L and N from a 3 A main supply, along with the Earth connection.