I've put new ch rads in the kitchen and outbuilding. If they are
running at the same time as the rest of the house, they will be
wasteful and cost a lot to run.
So what I ideally want is the facility to press a single button on
entering the kitchen, which will open an electrical valve and allow
those radiators to run for an hour before the button needs to be
pressed again. (I don't want a timer where you set it to turn on and
off at specific times)
Is there any such thing as a timer like this?
On Tue, 28 Oct 2008 11:11:17 +0000, Andy Burns wrote:
I like that as a solution but would mean that the heating kicked in even
if you only passed through the area rather than intending to remain in
One could easily have a long hang time after being triggered but that
wouldn't work very well with the passing visit. Warm up will be the same
in both cases of button push or PIR trigger.
You can get timers. I doubt the cheap air operated ones would go out to
hour reliably and are a pain to adjust even at a few minutes delay. So
it's DIN rail modules which come in all manner of options...
You sometimes see light switches like that, but with a shorter delay.
Radio Spares (and do doubt others) sell 'delay off' relays. These relays
close when power is supplied and then stay closed, possibly for a variable
period, after power is removed.
On Tue, 28 Oct 2008 03:30:16 -0700 (PDT) Tonyjeffs wrote :
Push once, twice or three times for 30/60/120 minutes. Push again to
cancel before the time period runs out.
Tony Bryer, 'Software to build on' www.superbeam.co.uk
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