Re: Re: Comfort control of heating.

["Dean Smith" <ukha@xxxxxxx>]

The trouble is what you need varies depending on the style of your current = heating and whether you want to keep the existing timer etc.

I have "Y" Plan heating with a single 3 way valve. This requires = a 240V signal for "Heating On", "Hot Water On" but also= "Hot Water OFF".

My setup is wired as per http://www.eatworms.org.uk/HA/heating1.gif and for normal operatio= n requires the "Hot Water OFF" to be fed from the controller. Bot= h the "Hot Water ON" and "Hot Water OFF" feeds are disc= onnected by the Comfort operated relay and the outgoing "Hot Water ON&= quot; feed made live -therby overriding the controller whether it was "= ;On" or "Off".

If I turn off or remove the old controller - I would have to add a live fee= d to replace the normally closed "Hot Water OFF" feed from the co= ntroller.

The relays I used (which are arguably overkill - but do have nice screw ter= minal, din mount bases) were from Maplins. Codes.QC79 for the relay and QC8= 6 for the base.

I did look at the whole Smartfit solution but =A315 worth of relays versus = Comfort UCM + new valve etc etc just didnt stack up.

Dean


----- Original Message -----
From: <steve.cooper@xxxxxxx>
To: <ukha_d@xxxxxxx>
Sent: Monday, November 11, 2002 9:29 AM
Subject: Re: [ukha_d] Re: Comfort control of heating.


>
>
> Any chance that someone who has done this could produce a wiring diagr= am
> and a parts list.  I'd like to have a go at doing this but there = are more
> than half a dozen wires coming out of the current timer.
>
> S.
>
>
>
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