Wireless Thermostats
Wireless Thermostat (single channel)
In short
A wireless thermostat (stat) runs on batteries and has no terminals. It tells its receiver by radio whether it is calling.
If this is your home: this page is written for heating engineers. Mains wiring and gas appliances are not DIY jobs; call a Gas Safe registered engineer. If you smell gas, leave the building and call the National Gas Emergency Service on 0800 111 999.
What it is
A WIRELESS THERMOSTAT (stat) runs on batteries and has no terminals. It tells its RECEIVER by radio whether it is calling. The receiver does the switching.
It is a thermostat only: it keeps no time. So the system still needs a timer (Boiler Plus).
Many branded wireless pairs are a PROGRAMMABLE thermostat: a timer and a thermostat in one.
It comes set at 15 °C, below the 17 °C room, so it is satisfied until you turn it up.
What the meter reads
Turn it above the room: its flame shows, and the receiver's central heating on (CH ON) goes live.
Where it connects
Lessons that use it
- A wired room stat to a wireless one
Intermediate · Swapping controls
- Weather compensation
Intermediate · Protection and extras
- Combi wireless stat (page 49)
Worcester wiring
- Wire a wireless thermostat to a combi
Quick Jobs
Wiring diagrams it is part of
Read the explanation
- Wiring a wireless thermostat to a combi boiler: the receiver, the link and the room-stat terminals
A combi needs only its supply and a call on its room-stat terminals. The receiver’s relay replaces the link; check volt-free against mains-switched first.
Practise it in the simulator.
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