NC
NO
BOILER
COM
Switch Live from NO
(normally open contact
for heating) to bolier
230V AC
50Hz
MAINS
SUPPLY
Supply
Neutral
Supply
Live
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
A ‘Loop Terminal’ is provided should a 3 core cable
be used
Load (Boiler)
Switch Live (Brown or Red) to
NO
