NC1
NC2
NO1
NO2
Heating
L
230V AC 50Hz
MAINS SUPPLY
Supply
Neutral
Supply
Live
N
Hot
Water
Switch Live from
NO2 (normally
open 2 contact)
to Hot Water
Switch Live from NO1
(normally open
1 contact) to Heating
5
6. Connection Diagram
Connect the 230V 50Hz mains supply and load cables to the terminal block
which are marked as follows;
• Note: Check boiler instructions before connecting.
230V 50Hz Mains Supply
Live Supply (Brown or Red) to
L
Neutral Supply (Blue or Black) to
N
A ‘Loop Terminal’ is provided should a 3 core cable
be used
Load (Boiler)
Switch Live, Central Heating (Brown or Red) to
NO1
Switch Live, Hot Water (Brown or Red) to
NO2
