On 24/10/2019 14:46, dennis@home wrote:
On 23/10/2019 22:42, Robin wrote:
On 23/10/2019 22:10, Steve Walker wrote:
snip

TRVs and single room stat only run the system while that one room is
too cold. Once it heats up, the whole system stops, even if other
rooms are too cold. The whole system only runs or stops at the same
times of day.

Timer/stat per room allows each room to have different times as well
as temperatures, runs while any room is too cold and shuts down
boiler and pump when there is no demand.


Do you happen to know of a way to have a timer and stat per room but
adjust centrally the temperatures - or even just adjust them all up or
down by the same amount?Â* I ask as IMLE one advantage of TRVs and a
single room stat is that if the stat is set lower than usual then
(with a reasonably balanced system) the rooms with the TRVs also
stabilise at a lower temperature than the TRVs would maintain.Â* It's
useful for people who have days when they want the house warm and days
when they want to the house very warm.


Hive, but its expensive. Something like £100 for the stat and boiler
switch and £40 per room for the replacement "TRV". There are others.
I don't know if you need the stat but you need the hub and its the
cheapest way to get the hub and boiler switch installed when there are
specials available, like now you can get a hive stat, hub, boiler switch
and a "free" echo dot for £99 installed if you can sign up for BG rewards.

I've not had hands on a Hive system with radiator valves but from the
manuals and comments online I thought one could only adjust them one by
one. What I want - and should have made clearer - is the means to
adjust several at once. Ideally several that are not all set at the
same temperature but move up and down in step. If it means going
through several it won't get done.

The need to replace batteries every so often also militates against them
for the user I have in mind. (The more so if, as some users seem to
find, 2 years from one set of batteries is optimistic.)



--
Robin
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