dennis@home wrote:

On 25/10/2019 09:33, Roger Hayter wrote:
alan_m wrote:

On 23/10/2019 14:24, T i m wrote:

Ignoring the binary / analogue action, what is the (functional /
thermal control) differences between a thermostatic rad valve and a
room stat / room? And we are only talking about the ability to manage
the temperature in the room, nothing else / irreverent thanks.

This should be funny ...

On a cold frosty morning and the TRV is fully open it cannot tell the
boiler and the pump to switch on to provide heat. The room remains cold.

On a cold frosty morning and the temperature is low a room thermostat
can tell the boiler and the pump to switch on.

That is to assume that there is any point in the boiler being off in the
heating season.


If everything is up to temperature it stops the boiler cycling which
saves fuel and wear.

You know it makes sense.

So does sitting at home in your overcoat all day to save the climate -
but I don't do it.

--

Roger Hayter