I currently have a Halsted quattro gold, which works ok bar the occasional break down, but although its on a timer we don't have a room thermostat. I really would like to get one as I find its either tropical or freezing. I don't think its necessary to be sitting in a Tshirt in the middle of winter so being able to set a temperature would be good.
Do you know is it possible to fit a room thermostat to this existing system? We have TRVs already.
thanks

I had my plumber (sorry, "heating engineer") fit a timer to my boiler. I think you can also add in a thermostat, as long as there is a blank space on there where one could originally have been fitted. Otherwise, I am afraid you will have to work out what temperature your TRVs give out at which setting.

Ary.

why not contact the manufacturer, they should know

I just had a quick look on the Halstead site and it says you can fit any certified mains voltage room thermostat in the Instalation guide for that particular boiler.

The installation guide says

"If a room thermostat is to be used, remove the link between terminals 1 and 2 and connect the switching conductors in their place. If the room thermostat requires a neutral supply, connect this to the N terminal."

hope that helps

I did put up a link to the installation and service quide on the manufacturers website, but it seems the person or persons that mod the place have removed it for some unspecified reason.

if you do a goggle search for Halstead quattro gold and look on the site for the installation guide

thank you
is it a DIY job or do I need a electrician or a plumber?

You need a plumber. Electrics are involved, but they are the type a plumber is qualified to do. (I have had two room thermostats retro fitted, is a half-hour job so should not cost you too much.)

It's not difficult to fit a room stat. If you can wire a plug it shouldn't be beyond your capabilities. Where the power goes into the boiler, you should find a link. If this isn't obvious Halstead should be able to tell you where to look. Then you have the option of what stat to fit. The simplest would be a cordless, so you can put the stat anywhere, and move it around.
A programmable stat is a good option, this only needs two wires, then you set the boiler to constant heating, and select your times and temperatures on the stat. It will let you have daytime and night time temperatures, and a seven day timer.
Otherwise your stat will need three wires, two to switch and a balance neutral to speed up the on/off times. Any stat will come with instructions.

Sounds like a generally bad idea - why do you cook or freeze if you've got TRV's?. Perhaps they're not working any more, or just set wrong. Our previous house and our current one are both fitted with no room thermostat and TRV's all round, and do just what you'd expect: maintain all rooms in the house at a nice temperature. If you want to save gas zone valves linked to the timer are the way to go, so that you don't heat the bedrooms until jst before it's time to go to bed, and you don't heat the lounge area unnecessarily if you're going to go straight out to work in the morning. If you have TRV's all round make sure that your boiler is fitted with an automatic bypass.

Industrial/office premises are also sometimes fitted with predictive timer/thermostats, which measure the OUTSIDE temperature. Not only do they then ensure that the boiler doesn't even light up on warm days, but they turn the heating on earlier in the day the colder it gets outside, so that the internal temperature has just met the required level by the same time in the morning.