Locate The Terminals For Each Room Thermostat (Rt) - Light Wave JSJSLW920 Instruction Manual

Quick Start Guide
Install 4: Multi-zone (S plan plus)
Access the wiring centre
A Boiler Switch needs to be wired in place of each existing room thermostat.
In order to locate these connections, you must gain access to the system
wiring centre. This is often located near to the hot water cylinder. Make sure
that you turn o
an S plan plus setup are usually to a standard format. A typical example
(Honeywell system) is shown in the diagram on the next page.

Locate the terminals for each room thermostat (RT)

Once you have accessed the wiring centre, you need to locate each room
thermostat's connecting wires, and terminals that they are connected to.
There will be a connected thermostat for each zone valve present, each with
two main switching connections (usually white and black). In some cases, a
thermostat may also have a neutral connection (usually blue). Make a note of
the locations before disconnecting the wires, as they may not be marked.
Locate mains power terminals
Each Boiler Switch also needs to take mains power. This can be routed from
live, neutral and earth terminals located in the wiring centre (see the
example in the diagram). Take extreme care when dealing with live mains; if
unsure always consult an electrician as an incorrect install could result in
damage being caused.
the mains power. The connections in the wiring centre for