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PostPosted: Sun Nov 20, 2016 2:56 pm 
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Hello all. I want to replace my existing central heating (hard wired) programmer which is on my landing. I do not currently have a roomstat anywhere in the house. I would like a wired programmer that either has a built in thermostat or can be linked wirelessly to the programmer. I have seen many combinations of programmer and roomstat yet not a single one gives enough of a description to assess if the programmer is wired and the roomstat is wireless.
Any help would be greatly appreciated.

Mark


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PostPosted: Sun Nov 20, 2016 3:17 pm 
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Honeywell dt92e is a wireless programmable stat with a relay box.

What is the boiler make model.


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PostPosted: Mon Nov 21, 2016 10:02 am 
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Thanks. The boiler is Worcester bosh Greensted oil fired.


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PostPosted: Mon Nov 21, 2016 10:07 am 
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Sorry, the scruff, but you are mistaken. The DT92e is not programmable.

The most suitable replacement will depend on how the DHW is heated - combi boiler or separate HW cylinder.

Honeywell Sundial RF2 Pack 1 for a combi; Pack 2 if you have a HW cylinder.


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PostPosted: Mon Nov 21, 2016 2:14 pm 
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Or pack three if you want to position the programmer somewhere other than the airing cupboard.

I have always used pack 3, but in usual Honeywell tradition, had a few faulty out of the box!!!

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PostPosted: Mon Nov 21, 2016 3:37 pm 
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Agreed; but how often does anyone alter the times, particularly of the HW?

Pack 2 is designed to replace an existing CH+HW programmer (same backplate, same wiring) and provide a wireless room stat.

Pack 3 is intended for systems which have no existing controls; but the programmer still needs to be located where the cable can be run back to the motorized valve(s). The wireless cylinder stat is helpful if the MVs are not near the HW cylinder.


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PostPosted: Tue Nov 22, 2016 1:24 am 
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D Hailsham wrote:
Sorry, the scruff, but you are mistaken. The DT92e is not programmable.

The most suitable replacement will depend on how the DHW is heated - combi boiler or separate HW cylinder.

Honeywell Sundial RF2 Pack 1 for a combi; Pack 2 if you have a HW cylinder.


No need to be sorry Dave it's my cockup, although it is sort of programmable :thumbright:


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PostPosted: Tue Nov 22, 2016 5:23 pm 
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Thank you all for your help. Looks like pack 2 might do the job.


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PostPosted: Tue Nov 22, 2016 7:08 pm 
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mbishop wrote:
Thank you all for your help. Looks like pack 2 might do the job.

You haven't said which existing programmer you have, so you need to check carefully that the wiring is correct. Backplates are now standardised, but if you have an old programmer it may be different.

Come back (this topic) if you need help - you don't want to damage anything!


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PostPosted: Wed Nov 23, 2016 1:32 pm 
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Thanks D Hailsham. My current programmer is Newlec, Centaur plus NLC21. I was just about to pop out to get the new one when I saw your message !!

Many Thanks

Mark


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PostPosted: Wed Nov 23, 2016 1:58 pm 
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Both programmers use the same backplate and the wiring is identical.


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