Hi all,

I'm trying to get the feel of the pros, cons and otherwise of a CH
question for an elderly neighbour we keep an eye on.

She has an existing and fully functional CH/HW system but there is no
room stat, just thermostatic rad valves (that apparently 'don't work
and have been replaced once already').

Her son sets the timer up for her to give HW once per day and CH twice
but I think something more 'temperature managed' might be more
suitable, as she's now no spring chicken.

So, the question is, 'how easy and what would be best' if we wanted to
add a room stat to this setup please?

Potterton Netaheat Electronic B/F CH boiler.
Honeywell:
Timer ST799 (or looks just like one)
3 Position Diverter Valve (L641A1005)
Cylinder Stat. (L641A).

Grundfos pump (that I replaced a while back with the help of some
good folk here). ;-)

There is also a junction box.

So, would you be able to use an addon Wireless stat with this setup or
to give more flexibility, would it be best to replace the Timer with
one that can accept a wireless stat directly (if such exists etc).

I think I understand that some of this new gear gives quick access to
background CH temperatures / living temperatures etc and as long as it
is reliable I can't see her needing to touch it one 'programmed (as
long as she can manage the room stat etc (she's actually not bad and
even uses the PC I gave her quite a bit)). ;-)

Oh, whilst she's not made of money I don't think she would mind
spending the right money to get something

Cheers in advance,

T i m