For the installer
Installation and connection should only be carried out by a suitably qualified person
and in accordance with the current edition of the IEE wiring regulations.
WARNING: Isolate mains supply before commencing installation.
An example circuit diagram for a typical combi boiler installation is shown below. This
diagram is schematic and should be used for guidance only.
N
N
E
L
L
1
2
3
4
For precise terminal
connection information
please refer to boiler
manufacturer's instructions
REMOVE LINK
IF REQUIRED
TERMINALS L-2
SHOULD NOT
BE LINKED
BOILER LIVE OUT
SWITCHED LIVE
RETURN
T
O BOILER
MAINS
SUPPLY
E
N
L
COMBINATION BOILER TERMINALS
Wireless link
CentaurPlus ZW
ROOM
STAT
2
