S Plan; Wiring To An S-Plan Heating System - Light Wave JSJSLW920 Instruction Manual

3. Wiring to an S-plan heating system

The basic diagram below shows the main constituent elements of an S plan
system which is common in larger houses. The system boiler produces hot
water which is stored in the tank and/or circulated in the central heating
system. Two motorised valves allow flow to the tank, the radiators or both
together. A room thermostat controls the flow to the heating by opening or
closing the heating valve. This thermostat needs to be disconnected at the
wiring centre and replaced by the Boiler Switch.
Motorised valve
Heating
Install 3: S plan
Wiring
Centre
Room thermostat
Motorised valve
Hot water