On Wednesday, 23 October 2019 00:22:17 UTC+1, T i m wrote:
On Tue, 22 Oct 2019 10:31:14 -0700 (PDT), tabbypurr wrote:

snip

It's a Y plan system but with no room stat, relying on thermostatic
rad valves and the boiler stat for CH. Simple and seems to work fairly
well, all be it not very 'adjustable' (but she rarely has the need to
adjust it it seems).

One way to stop the Mrs fiddling with the room stat is to not have
one. ;-)

We don't have one either, but then we don't have CH ...



Mad setup to have no room stat.

There are effectively stats in every room?

no, TRVs are not equivalent to room stats. We must have been over and over that on here.