fitting room thermostats

spaceboy

Our central heating system doesnt currently have any thermostats, just the programmer in the kitchen. How do we go about installing room thermostats?

Le_Kirk

A bit more detail on what is used to provide the heating would be helpful, radiator type (wet or electric) boiler type (if a boiler). Your difficulty is going to be breaking into the boiler control circuit such that it can react to a controlled shut-down due to temperature increase beyond the desired setting. I would guess that fitting wireless thermostat(s) would be best as you then don't have the hassle of wiring between thermostat location and boiler control panel.

spaceboy

Radiators - wet

Boiler - Baxi Solo WM 50/4 RS condensing boiler (early to mid 90s?) in kitchen, hot water cylinder in kitchen cupboard. ACL Lifestyle LP522 programmer in kitchen.

victor2

Assuming it is a boiler driven wet central heating system, then having Thermostatic Radiator Valves fitted in each room is probably the cheapest and most effective way to do it. Materials won't cost much, just the labour for a plumber to do the work.

Le_Kirk

According to the manual the boiler should be controlled via a control system comprising timer control and separate room or cylinder thermostat. It also says that a minimum flow rate should be maintained so if you go with Victor's suggestion (a good idea) you need to make sure that at least one radiator is always fully open, i.e. has not TRV fitted.

psychic_teabag

IIRC the idea is that you don't fit TRV on the radiators in the room that has the room thermostat. Otherwise there'd be a problem that the room thermostat turns the boiler on, because it's too cold, but the radiators don't actually supply any heat because they think it's fine. So that room would never warm up, and the demand for the boiler remains on.

Xeorix

You can add thermostats to each radiator, but you really should have on centrally that you can control the actual temperature, otherwise you're using a lot of guess work and it's probably costing you more money.

See if you can get something like the Nest fitted into your existing system.

roneik

I have that baxi fitted and the thermostat is from plumb center. It's digital and you can set three on offs. Also manual . It cost 100 quid supply and fit. Also in airing cupboard I have digital thermostat , so that either upstairs or down you can override and control from either location. I also have thermostatic rad valves , often wondered why not fitted in downstairs room with thermostat. Earlier poster answered that . Baxi solo is for me a simple boiler that has not too much to go wrong. I swear by the brand. The last one was donkey years old and hardly anything ever went wrong. System fitted 2 weeks ago . :j

Jonesya

OP - assuming you mean a room thermostat then it should be possible to add one to the control system but it depends on your electrical skills, you probably want to get a heating engineer to do it to

Most boilers follow a standard wiring plan but these normally include a room stat - Google Honeywell y plan and s plan to get an idea. The room stat is normally wired in series with the heating output from the controller, so you need both closed/calling for heat to get the heating on.