Trying to Understand Heating System


Postby Gambler » Thu Aug 21, 2008 11:48 am

We moved house a couple of months ago from a new house to a seventies house.

In our previous house we had gas central heating using a non-combi boiler, controlled by a timer which we used to programme to come on at certain times of the day. Hot water was also programmed to heat up at certain times of the day.

All rads also had individual thermostats and we also had a thermostat in the hall which we usually had set between 20 and 22 degrees.

This set up worked fine for us as once the house was heated to the required temp the heating would go off.

Now at our new house we have a combi bolier which supplies constant hot water. The timer is more basic than before but we can programme the heating to come on at certain times of the day. The rads also have individual thermostats (although some dont work as rads are always full on regardless of setting).

The only problem we have at the moment is that there is no thermostat to enable us to control the 20, 22 degrees etc. We miss this as in the previous house if we were feeling cold we could just knock up the temp and vice versa.

Can we have one fitted? Is it a big job? Or is it just a case of getting the faulty rad thermos replaced and having to control each rad seperately. Semms a bit of a pain to keep changing them all the time.


Thanks
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Postby htg engineer » Thu Aug 21, 2008 7:13 pm

Do you mean a room thermostat ???

They are easily installed - obviously depending on where you want it. If it's directly below the boiler, then it's only one floorboard to be lifted - other end of house may prove more difficult, depennding on floor covereings.

Positioning is important for correct operation - do not install above a radiator, in the same room as a gas fire and install away from direct sunlight (eg not opposite windows).

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Postby Gambler » Thu Aug 21, 2008 7:24 pm

[quote="htg engineer"]Do you mean a room thermostat ???

They are easily installed - obviously depending on where you want it. If it's directly below the boiler, then it's only one floorboard to be lifted - other end of house may prove more difficult, depennding on floor covereings.

Positioning is important for correct operation - do not install above a radiator, in the same room as a gas fire and install away from direct sunlight (eg not opposite windows).

htg[/quote]

Thanks for your reply. Yes sorry it is a room thermometer. There is an existing one in the dining room but it is no longer in use, the vendors never got round to removing it.

The boiler is in the garage and there is a shower room between the garage and the dining room (tiled floor). I've also been reading about the wireless versions.

I'm planning to get in a good plumber who has done a lot of work for us before. Just wanted to gauge the difficulty before adding to the list of little jobs we have for him.

Thanks again.
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Postby htg engineer » Fri Aug 22, 2008 1:25 pm

Sorry - yes the wireless one's would solve the wire routing problem.

Plumber ? wouldn't normally undertake fitting a room thermostat, You need a heating engineer or an electrician.

Wireless room stat - easy when you know how.

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Postby sparx » Fri Aug 22, 2008 1:32 pm

Hi
asa suggested you should have a room 'stat fitted in an area where there is no rad trv installed, this is legally required now under 'part L' of bldg regs to prevent the boiler 'cycling' on/off when system upto temp.
Radio 'stats are oki but the receiver end does need some extra wiring to provide a permanent supply to operate it as well as the control wiring from boiler.
I have fitted several for local plumbers who didn't want to do it, it's easy once you have done 1 or 2 !!
regards SPARX
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Postby screech » Tue Sep 02, 2008 11:10 pm

most wireless room stats are battery operated so the only wiring is at the boiler for the receiver. relatively easy for someone in the trade.
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