RE: Automate my central heating - How?

["Ian Bird" <I.Bird@xxxxxxx>]

This is pretty much what I did except that I then used an RCS unit t control the relay. I took the original wiring bits out of the thermostat and then tested t find which wires were connected/disconnected by the unit and imitated this with a relay. I used a little strip board, soldering and a box to make it neat. Don't forget to make the relay removable otherwise it's a little awkward 'when' it fails. I did it this way as I didn't know what the big resistor did that is part of the thermostat. I also couldn't figure out where my wiring heating went or how it worked so this was an easy option. If you don't have an RCS unit all you need is a way of finding the temperature and a little programming (assuming you have HV or PC software etc.)

 

Ian

-----Original Message-----
From: steve [mailto:steve@xxxxxxx]
Sent: 06 July 2001 22:33
To: ukha_d@xxxxxxxSubject: Re: [ukha_d] Automate my central heating - How?

 

You can of course use a relay contact in place of the thermostat/timer and avoid even having t try t figure out the internal wiring of the boiler.

 

On mine personally the heating side of the combi is controlled by a triac which has to be sufficient rating to carry the pump current. A relay would have been simpler.

 

Steve.

 

 

----- Original Message -----

From: Kenneth Watt

To: ukha_d@xxxxxxx

Sent: Friday, July 06, 2001 7:22 PM

Subject: RE: [ukha_d] Automate my central heating - How?

Justin,

Scary stuff, I wanted t do this in my last house that had a combi,
here's the hurdles:

1. You need t find out what wiring fires the boiler on from both the
boiler stat and the room stat.

2. If it's off the internal timer, or a separate timer, you need t
isolate which wires switch the boiler stat, to bring the boiler on.

3. You need t find the *INTERNAL* switching voltage of the boiler, some
operate on 24V, some on 12V and most on 240AC.

Then you can start t figure out how or what you want t do.

K.

-----Original Message-----
From: Justin [mailto:justin@xxxxxxx]
Sent: 06 July 2001 14:45
To: ukha_d@xxxxxxxSubject: [ukha_d] Automate my central heating - How?

I am clueless when it comes t electrics so I thought I would ask before
I
blow somthing up!

I would like to be able t control my gas combi boiler using X10 but am
not
t sure how to go about it.
The central heating works on a built in timer at the moment (not while
it's
this hot though!) but there is a thermostat in the garage (where the
boiler
is).
Would it be possible t replace this thermostat with an AD10 ? I think
the
thermostat switches 220V live though. Does that sound right?

Cheers,
Justin





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