Wiring To A Y Plan Heating System - Light Wave JSJSLW920 Instruction Manual

2. Wiring to a Y plan heating system

The basic diagram below shows the main constituent elements of a Y 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. A motorised valve allows flow to the tank, the radiators or both
together. A room thermostat controls the flow to the heating by opening or
closing the valve. This thermostat needs to be disconnected at the wiring
centre and replaced by the Boiler Switch.
Wiring
Centre
System
boiler
Install 2: Y plan
Heating & Hot water
Motorised
valve