Potterton EP2000 CH controller + Danfoss TP7000M tstat

Jan 31, 2005 2 Replies
A

Hi,



I'm looking to replace my room thermostat with a fancy programmable jobbie, currently looking at the Danfoss TP7000. I see that the TP7000M is also available and requires a mains supply to power rather than the battery driven TP7000. The current room thermostat is one of the basic Honeywell electromechanical models and has three supply wires going to it. A red live, a blue neutral and a yellow 'load' (neutral from controller).



The controller unit is a Potterton EP2000 and was fitted when the house was constructed in 1990. My question is, can I use the TP7000M (with its requirement for a mains supply) with this setup *or* does the EP2000 only supply live to the thermostat when the controller has the CH switched 'on' (via its timing windows) ? Even if this is the case and the thermostat live supply is not 'always on' then presumably this can be achieved by switching the controller CH manual switch to always on.



Any advice, issues with using the TP7000M vs TP7000 for my setup most welcome.



Cheers,



Andy.


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L

On Mon, 31 Jan 2005 21:46:26 GMT, "Andy" strung together this:

The usual way to do it is to put the CH on 'constant' at the programmer or link it out permenantly.

As for the stat itself, the Honeywell CM67 is the weapon of choice for this group, I haven't got one myself but they are one of the better ones and well worth a look.

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A

Yup, down to a shortlist of two :-

CM67 TP7000(M)

It was the mains driven feature of the Danfoss model which had me interested. Spec wise they're pretty much identical and the cost is about the same too. The battery free aspect of the Danfoss was tempting me down that route hence the question about power supply to the stat.

Anyone out there using a Danfoss TP7000, either the battery or mains powered models ?

Andy.

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