Central Heating Room Thermostats / Controls

[hc4361]

Can anybody tell me how these work and how they are installed? My aged but efficient central heating system has only an on / off / timer control unit.

[malagabob]

A heating engineer would have to install one. Basically they are only a on/off switch. One wire comes from the boiler to the thermostat. To a spot in the house to give a average house temp. Another wire from the thermostat back to the boiler. They more often than not contain a bimetallic strip, that works on ambiance temperature. A oven on a gas cooker works normally on a bimetallic strip.

[hc4361]

Thanks for that, malagabob

[KARL]

Thermostats are now available in the form of two units, a base unit wired in and the other is the sensor which can be sited wherever most appropriate - the sensor can even be moved around. The remote sensor unit sends a wireless signal to the base unit.

[hc4361]

So with that type, Karl, if I wanted to keep the living room at optimum temperature I would site the remote unit there whilst the wired unit replaces my existing control unit that is in the hall. Have I got that right?

[woofgang]

hc, you might like to think about getting thermostatic valves on your radiators instead of a central thermostat. Each radiator can then be set to its own temperature so you can have each room or area the temp that suits you

[hc4361]

woofgang - how do they work? As you can tell, I know nothing of central heating systems

[malagabob]

TRVs. Thermostatic radiator valves are normally filled with a wax like substance that senses the air around them. Expand contract depending on the area to where they’re fitted and can be set 1-5. 5 being fully open more heat required. When the desired temp is reached/drops the wax shuts off or opens the valve

[hc4361]

Thank you, bob :)