In an earlier contribution to this discussion,
Mark Trueman wrote:

OK,

So im just trying to work out how to connect this new stat up (Drayton
Digistat 3)

Its got 3 wires, common, heat satisfied and heat not satisfied.
Ideally i would like to be able to just wire this into the timer
control and not have to do a run to the pump, as the pump is in a
stupid position under the floor and is a pain to get to. Plus there
is no junction box, it seems to be wired up by someone with a
deathwish!! Its a Drayton Lifestyle lp241 controller. Just wanted to
check the following....

Im pretty sure that common on the stat can be put into to the "ch on"
(pin 4) in the timer, but im not sure about the other 2.

Any help is appreciated before i have to pay someone to do it

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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