On Wed, 24 Nov 2004 22:31:28 +0000, Pete C wrote:

Hi,

Another way would be to have some resistance wire in the TRV. When current
flows through it the heat from the wire lowers the temperature the TRV
closes at.

This could work quite well as in mild weather it's OK to turn off the rads
in rooms that aren't being used, but in colder weather some background
heat is still a good idea.

Or the current can be switched at different duty cycles to vary the
effect, an old laptop with a parallel port interface circuit would be
ideal for this.

cheers,
Pete.

Bit like a set-back thermostat? Good idea. I'm not quite into the old
laptop idea though, as I want this to work ;- I'm a programmer, so I
know when not to depend on computers, which is most of the time if at all
possible, especially if involves me getting cold :/

Always, always have a *big* manual override switch.

Cheers - I do like the first idea though!

Timbo