Re: Fw: automated central heating

["David Gumbrell" <david.gumbrell@xxxxxxxxx>]

You can use a light switch to select normal room thermostat or
automated
relay. That way, when the plumber, boiler service guy or whatever comes
round, flick it to "stupid mode" and don't even tell them it's
normally
automated :-)

Cheers,

David

On 10/4/06, Kim Wall <kim@xxxxxxx> wrote:
>
>   Stephen wrote:
>
> > Is there any central heating controller that has an "aux
input", so
> > that when this is activated, it switches on the heating? That way
you
> > could connect the cbus/x10/whatever to the aux input. Putting
your own
> > relays across the existing controller is ok because you know what
you
> > have done, but I worry about any plumber coming to service the
boiler
> > etc. he might switch off the controller but get zapped when the
> > automated side switches on. If the automation was interfaced
through a
> > recognised contact, it might be safer in that respect.
>
> I have my heating controlled by a relay across the room thermostat.
The
> existing timer is set to permanently on, and the thermostat turned all
> the way down (the automation system does its own temperature
> measurement). Thus, in the absence of the automation input (or indeed
> if the temperature drops below 5C or so), the system functions as
normal.
>
> I would have thought that a plumber working on the system would
isolate
> the power using the switch/plug intended for the purpose, as simply
> setting the timer to 'off' is likely to leave some of the wiring
inside
> the boiler, motorised valves etc. live.
>
> Kim.
>
>


[Non-text portions of this message have been removed]



** Sponsored by http://www.BERBLE.com **
all the Cool Stuff, in one Place