On 23/10/2019 00:22, T i m wrote:
On Tue, 22 Oct 2019 10:31:14 -0700 (PDT), 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?

Its a rubbish system.
Even one with a room stat is pretty well rubbish.

For room stats to work there has to be a pump running and the boiler
running.
If neither is true you won't get any heat even if its icing in the rooms.

If you set the pump and boiler to run all the time you are wasting gas
and electricity and wearing out the system when there is no need for heat.

At least with a room stat there is a bit of control as neither will be
on if the room with the stat is warm saving a fortune compared to the
cost of fitting it.

I think proper controls should be mandated, ie. zones with stats and timers.