There's a very good chance that the wire currently connected to CH ON in
the
programmer goes to the pump. You need to connect your stat *in series*
with
this pump connection. This means disconnecting the existing wire,
connecting
CH ON to Common on the stat, and connecting the disconnected wire - now
floating around in space! - to 'heat not satisfied' on the stat. Don't
connect anything to 'heat satisfied'.
--
Cheers,
Set Square
______
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Cheers mate, simple when you know how. That worked a treat. Now i just have
to work out how to wire up the 2 port and the cylinder stat (which i will
buy at the weekend maybe).

Of course, the problem now is that as the central heating is on all the time
(pump is controlled by the stat), the hot water is on constantly. The sooner
i get this cylinder stat and valve in the better i think.

So expect some more questions soon....

Thanks again

Mark