"Andy Hall" wrote in message
...
On Wed, 11 Feb 2004 11:49:15 -0000, "IMM" wrote:


"Andy Hall" wrote in message
.. .
On Wed, 11 Feb 2004 10:56:44 -0000, "Neil Jones"
wrote:


"Andy Hall" wrote in message The Hometronic
system
itself isn't new and has been around in Germany
for a number of years, where it is quite suited to apartment
installations. The earlier version of the radiator valve was RF
controlled as well but AFAICR did not have transmission capability
to
a boiler interlock device.

The CF67z is new, although one point to realise is that it will only
cover two zones to a set point. Each HR80 can be set in itself but
then that is not under CM67z control. The data sheet leaves that
bit
out.

Also, since each HR80 uses 2 x AAA batteries, it is going to make
Duracell shareholders very happy. :-)

Some interesting ideas though

I looked at Hometronic last year but I think it's far too expensive
for
what it is.

I'm vaguely interested in the new solution, but only if it's
comparable
in price with a normal CM67 + TRV solution. If it's a lot more, I'd be
more interested in getting a solution with a bit more intelligence
which
could be integrated into a whole house system.

Neil

Quite. I would be surprised if the valves are south of £100 a go.

I've been developing a system which includes this type of
functionality plus a great deal more. There are some commercially
exploitable aspects, so I don't want to expand on the details as yet.

Just give us the functionality, not the details. I'm certain it has
already
been thought of.

Nope. I m certain that the overall concept has not been thought of
before and I am not even going to describe it in outline.

Give an overview and I will tell you if you are going up a blind alley.