Choice of wireless thermostat / Part P

[Aldrich]

Hi

As I mentioned in another thread, I am thinking of replacing my mechanical room thermostat with a Honeywell CM67. I intend to fit it to the existing programmer and to leave that on 'continuous'. My only reservation about the CM67 is that its user interface does not provide the simple functions that I am used to, namely Advance and Extend (by 1,2,3 hours). I think I can use the CM67's Party button to achieve these sorts of functions but I think it is a little more complex to use.

I know the CM67 is well regarded but wondered if anyone has found a better alternative (such as the Drayton)?

Also, what is the situation about diy replacement of a central heating thermostat? Does it come under the requirements of Part P to be done by a qualified electrician, or can I do it myself?

David

[Aldrich]

Hi

As I mentioned in another thread, I am thinking of replacing my mechanical room thermostat with a Honeywell CM67. I intend to fit it to the existing programmer and to leave that on 'continuous'. My only reservation about the CM67 is that its user interface does not provide the simple functions that I am used to, namely Advance and Extend (by 1,2,3 hours). I think I can use the CM67's Party button to achieve these sorts of functions but I think it is a little more complex to use.

I know the CM67 is well regarded but wondered if anyone has found a better alternative (such as the Drayton)?

Also, what is the situation about diy replacement of a central heating thermostat? Does it come under the requirements of Part P to be done by a qualified electrician, or can I do it myself?

David

[Andy Hall]

I think that it's a matter of preference.

Have a look at the Danfoss Randall ones and see if you like those.

TP5000-RF 5/2 day programmable room thermostat TP7000-RF 7 day programmable room thermostat

[Roger Mills (aka Set Square)]

The CM67 isn't the most intuitive device to program - but once it's set up, it works fine.

The party function can be used to increase or *decrease* the temperature for a specified number of hours, or you can just over-ride the current setpoint and it will remain there until the next programmed event. The Holiday function is also extremely useful. You can leave the system on frost protection only for N days while you are away, but still come home to a nice warm house.

My understanding is that, since you are simply changing a component in an existing circuit, you don't have to worry about Part P. I don't, anyway! It's quite easy to fit in place of a mechanical stat - as long as you're not one of these people who worry about having a spare wire, and who insist on connecting the redundant neutral wire to the unused switch terminal - with devastating results.

[Rob Summers]

< SNIP >

Not used the CM67 myself but do have a Drayton; from reading articles in this newsgroup I would say that you'd probably be better off with the CM67 due to the addition of the holiday mode and party mode features (unless they've been added to the newest DIgistat models)

Rob