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Replacing Honeywell T40 with Drayton Wiser Heathub

Discussion in 'Home Automation' started by JonnyGo, 20 Jan 2018.

  1. JonnyGo

    JonnyGo

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    I am trying to install a new Drayton HeatHub (1zone), just trying to work out wiring as I am replacing Honeywell T40 thermostat. Images attached of exisiting wiring and new HeatHub wiring diagram.

    Cheers

    Jon
     
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  3. stem

    stem

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    I'm a bit puzzled why you are asking this, because all of the information you need is shown in the photos you have posted. From them, the wires at the existing thermostat are identified as:

    1=Live (Brown wire)
    2=Neutral (Grey wire)
    3=Switched Live, heating 'on' (Black wire)

    From your last photo, the Drayton unit you want to install has the wiring as shown below.

    Capture.JPG

    The Live (Brown wire) goes to Drayton 'L' terminal
    The Neutral (Grey wire) goes to Drayton 'N' terminal
    The Switched Live (Black wire) Goes to Drayton terminal 3 'On'
    Finally add a link between the Drayton L terminal and terminal 1 'Common'
     
    Last edited: 20 Jan 2018
  4. JonnyGo

    JonnyGo

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    No need to be puzzled, I know the basics, but just want to be sure that I get it the right way round, as rather not knock out the central heating for a day or so while I try to fix a false assumption. Not that warm here at the moment and wife would not be impressed!

    Thanks for the input, that marries with what I was assuming, just needed a second check.

    Cheers

    Jon
     
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