Re: Heating control

[Anthony R. Gold <listservers@xxxxxxxxx>]

Hi Colin,

I do the same as you intend, use Homeseer with X10 to control home
functions, including the heat and hot water in several homes, and never
had whichever events are of concern to Paul.

And also I've never needed to use a relay.

All the UK thermostats I've encountered had mains Line feeds that could be
controlled by being powered from plug power modules of from AD10 DIN rail
switches. If it's an electronic thermostat with a digital clock and maybe
programmability, try to choose one with "voltage free contacts"
so that it
has separate mains feeds for the electronics and the switched load. That
way the clock, display and controls of the thermostat can keep running
while the X10 switched power is turned off.

If you must use a relay (maybe because you don't have the installation
diagram and so are unsure what the wiring is doing?) get one that can
safely switch 2A at 240V, and for simplicity one with a 240V coil so that
the relay can be directly powered and controlled by an X10 or Z-Wave power
module.

Good luck.

Tony

On Sat, 01 Jan 2011 20:54:57 -0000, you wrote:

> Hi folks and happy new year.
>
> I'm thinking of letting homeseer manage my heating and have a solution
I'd like to run past you all.
> We have a combi boiler with no time clock, that heats just a single
zone within the house.
> my proposed solution is to break into the cable to the thermostat and
insert a relay that would open and close the circuit. I thought of leaving
the thermostat in place and leaving it set to a fairly high temp (25c) as a
safe guard in case homeseer fails to turn off the boiler for whatever
reason.
>
> Do you think this approach is workable? If so, what kind of relay
would be suitable?
>
> I'm using x10 today amd plan to introduce z-wave over the next couple
of weeks. I already have an rfxcom temp sensor that is reporting into
homeseer ok, so I really just need the relay I think.
>
> Any suggestions greatly received
> Colin
>


------------------------------------

<*> Join the Automated Home Forums
http://www.automatedhome.co.uk/vbulletin/