RE: Heating Question

[Stuart Poulton <swp@xxxxxxx>]

Mick,

I'm just checking things with the makers, and then trying to find a UK
stockist.

Stuart



On Mon, 2002-02-25 at 11:28, Mick Furlong wrote:
> Stuart
>
> sounds interesting, where are these units available from?
>
> Thanks
> Mick
>
>   -----Original Message-----
>   From: Stuart Poulton [mailto:swp@xxxxxxx]
>   Sent: 25 February 2002 11:22
>   To: ukha_d@xxxxxxx
>   Subject: RE: [ukha_d] Heating Question
>
>
>   Kevin,
>
>   Thats basically what I'm looking at, there are replacement units for
>   TRV, that replace the thermostatic knob, with on containg an
>   electrically heated core, takes about 4 minutes go from fully on to
>   fully off.
>
>   Stuart
>
>
>   On Mon, 2002-02-25 at 11:16, Kevin Wood wrote:
>   > I have heard (haven't got round to trying it) that a low cost
way of
> zoning
>   > off a heating system with TRVs is to strap a small resistor to
the
> valves
>   > you want to control and dissipate a few watts of power in the
resistor.
> This
>   > artificially increases the temperature of the TRV by a few
degrees and
>   > causes it to cut off the flow of water early.
>   >
>   > I would imagine this doesn't give you the on/off control you'd
get with
> a
>   > motorised valve but could be useful for reducing the
temperature of
> certain
>   > "zones" to a "set back" temperature when
not occupied. Perhaps coupled
> with
>   > a PIR in the room concerned. The degree of "set back"
can be adjusted by
>   > varying the power into the resistor. Could even automate that
if you fed
> the
>   > resistor with a PWM signal.
>   >
>   > It has a few advantages, notably cost, the fact you don't have
to drain
>   > plumbing, etc. and it's easy to restore the system to it's
original
> state.
>   >
>   > SWMBO probably wouldn't even notice.
>   >
>   > Kevin