Re: Comfort control of heating.

["Patrick Lidstone" <patrick@xxxxxxx>]

--- In ukha_d@y..., "James Winspear" <james.winspear@i...>
wrote:
> Sorry to divert a little, but has anyone any experience or ideally,
a
> wiring diagram, of automating (Comfort or HomeVision) Under-Floor
> Heating with a DCD Heating Controller ?

I don't know what a DCD controller is, but does it have a standalone 
thermostat?

If so, all you need to do is wire a normally open relay in parallel 
with the thermostat contacts (which close when the temperature drops 
to the point that the heating should be on). IME most thermostats 
have a handy little wiring diagram inside to show what goes where. 
Choose a 12V relay with mains contacts and you shouldn't go far 
wrong - I used the one from the comfort website, and mounted it in a 
DIN rail box.
Then set the thermostat to 0'c/min temp and the relay has exclusive 
control. If it all goes horribly wrong, reverting to original control 
is just a question of disconnecting the low voltage wiring to the 
relay coil and setting the thermostat back to something sensible.

Patrick



http://www.automatedhome.co.uk
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