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Replacing Drayton Digistat with Hive... Help!

Discussion in 'Electrics UK' started by Stuntmonkey, 25 Nov 2019.

  1. Stuntmonkey

    Stuntmonkey

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    Hi All

    Im new to the forum but stumbled across the thread below while looking for some info

    https://www.diynot.com/diy/threads/replacing-lp522-and-digistat-scr-with-hive.509681/

    I have a similar setup to the OP and all was going well until i got the the wiring centre...

    Unlike the neat affair in the above thread, i am faced with the below.


    I know i need to strip out the Digistat cable and wiring but any idea what i then need to link on the wiring centre?

    Any help and advice much appreciated.

    Thanks in advance
     
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  3. stem

    stem

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    There are two motorised valves connected to that wiring centre, probably via the two black cables in the second cable clamp from the left. One will be the motorised valve associated with the central heating. You will have to work out which one it is. [If you don't know from the pipework, with the heating on. If you get an assistant to turn the existing thermostat to max and wait 30 seconds, then down to min and wait 30 seconds while you listen to the valves you should be able to hear it clicking / closing]

    The brown wire of that valve should be connected to one of the wires from the Digistat. Once you have identified the suspect cable it should be isolated and tested by someone competent with the use of a multimeter to allow a positive identification.

    Positive identification made, first note where the wires go. The original thermostat cable can be disconnected and removed, then a link inserted where the two live wires (but not the Neutral if there is one!) have been disconnected from so that the two terminals are linked together.
     
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