I feel a big job coming on soon!!
Its also worth mentioning that boilers (especially condensing) like low return temps in order to work efficiently.
So lots of TRV's might end up costing you rather than saving.
Return temp is only a major concern with a condensing boiler - having read how they work on Wiki, I now understand what seems to be referred to as dew point in heating/plumbing trade - actually the return temperature, which does the condensing, for some reason decided to be optimised for 55C.
If your pipes are well lagged and/or within the living space, so that what little heat is lost, is lost to advantage to space heating, within reason, return temperature matters very little.
Nope it's simple physics, natural gas when burnt condenses or turns to water at 54 degrees C ………………....
So Vinny, are you arguing in favour of high boiler return temps?
or are you just arguing?
Thats exactly how to do it, have one accurate room stat in a good stable place ie not near windows or doors then play around with the TRVs till you get the best compromise. The Trvs should be on there side as upright the heat from the pipe work is rising through them and giving incorrect temps.
I had a wireless one installed in January, can be taken anywhere in the house and works a treat. The previous owner had bridged the stat out because it was faulty and the TRVs just didn’t cut it, it was really difficult to achieve a stable temperature anywhere in the house. I actually leave it in its cradle in the living room but with the temperature set at 18.5c and the TRVs in other rooms set accordingly, it’s always a comfortable temperature.
Well it’s only been in since January but so far, so good. This is the same as the one I had installed,Are these reliable? I'm thinking of getting one but my experience with the reliability of new central heating stuff (timers, valves etc) has made me wary, though maybe I've been unlucky.
Well it’s only been in since January but so far, so good. This is the same as the one I had installed,
https://www.wolseley.co.uk/product/center-radio-frequency-programmable-room-thermostat/
These are excellent, they're cut down versions of Honeywell CM927.
I've been installing both versions since about 2006 and have had maybe 5 fail out of well over 100.
I've one in my own house (mentioned in a previous post).