Thermostat temperature???

mae

What do peolpe set their thermastat to on average? I usually have mine between 25 and 30 but when reading some posts I'm wondering if I set it too high although I don't feel its overly warm at that...I live in a new build built about 5 yrs ago.
Thanks

Dora_the_Explorer_5

I have mine on 20 coupled with the water thermostat for central heating only set on maximum. I was advised to do this by CH engineer who said the maximum temp water would mean the rooms would heat up very quickly when the ambient temperature thermostat clicked on at 20. Only problem is I don't know if his advice will save me money or not - does anyone know?

ariba10

It depends where the Thermostat is . It is only affected by the Temp of the air arround it.
If it is in a large cold hall, it will be calling for heat all day and some rooms will be hotter than needed and Visa Versa if in a small room.
Far better to get thermostaic valves fitted to your radiators.

penrhyn

The human body is very bad at sensing what the temperature actually is.
I suggest you obtain a room thermometer and site it initially by your room thermostat.

In that way you will be able to see whether it is accurate.

Then with the thermometer in your main living area see what temperature you get. You can then adjust the roomstat up or down to get a comfortable temperature.

Its usually recommended that living rooms should be around 20-21 Celsius, thats 68-70 Fahrenheit.

Dora_the_Explorer_5

Thanks ariba, the thermostat is in the hall which is the size of a broom cupboard and as I always have the doors to all the rooms in my bungalow open the ambient temp is pretty much the same all through the house, which is how I like it. I have thermostatic valves on all rads except one and have them all on the same setting.

Cardew

If you have thermostatic valves on all rads the temperature set on the wall thermostat doesn't much matter as long as it doesn't shut off the pump.

The water temperature in the system will determine when the boiler will switch on and off.

jennifernil

I am puzzled as to why you have both thermostatic radiator valves and a separate thermostat. On a system with TRVs the pump should operate all the time (that is why you have a by-pass or one radiator without a TRV) and the boiler goes off and on according to the temperature of the returning water. If, as Cardew said, the thermostat is shutting off the pump then the system will not work as intended. I would have the thermostat disconnected, or you could turn it up really high so that it never goes off. Is it a combi boiler? If not you should have a thermostat on your hot water tank.
Unless you like it really warm everywhere you should set the valves in the bedrooms lower than in the living room, the point of TRVs is that they allow you to select the most suitable temperature for each room.

bunking_off

I thought the norm was to have TRVs on all radiators apart from the one where the central thermostat is. I'm sure jobbing plumbers on this site have commented that it's possible to have systems which are purely TRVs and some fit systems like that, but they're not considered to be best practise - see this thread.

As others have said, the setting depends upon precisely where your room stat is...hottest part of the house, or more typically in the hall near a door (cool point).

Personally, mine's in the hall and on this system 25 would be outrageously hot. My thermostat itself incorporates a timer that adjusts during the day, and it's set at 10 overnight, 18 in a morning, down to 16 during the day then 20 for the evening.

jennifernil

Read the post you gave the link to but still do not understand the point of the room stat. If it turns off the whole system then it does not allow the TRVs to do their work. Seems unnecessarily complicated, I can imagine people having a lot of problems working out how to set the different controls. There is no room stat in our system (now 18 years old) and it works very well.
The powers that be do indeed work in mysterious ways! But personally I would disconnect the room stat!

bunking_off

Jennifer

Me and you both! I've been told off on these fora for giving a view when I'm not an expert (even when caveated to say so), so I'm wary of guessing, but I think it's down to it being inefficient for the boiler to be active.

I picked up the following text about the Part L regulations from this website:

>All new and replacement systems must include a room thermostat and ‘boiler interlock’ (ie the thermostat switches the boiler off when there is no demand for heating).
>If a whole heating system is replaced, the controls must permit independent temperature control in two separate zones: the living and sleeping areas. This can be achieved with a single room thermostat and thermostatic radiator valves.

Does a TRV interlock with the boiler, or just turn off the radiator? I thought the latter.

Edit : found another site which explains it all...

alanobrien

mae wrote:

What do peolpe set their thermastat to on average? I usually have mine between 25 and 30 but when reading some posts I'm wondering if I set it too high although I don't feel its overly warm at that...I live in a new build built about 5 yrs ago.
Thanks

I would melt if ours was set to that !
Ours is set at 20c which is fine for 99% of the time.