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Honeywell ST7100 to Drayton Lifestyle wiring

Discussion in 'Plumbing and Central Heating' started by davidwf, 17 Sep 2018.

  1. davidwf

    davidwf

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    As per title really...this is my existing system (rightly or wrongly this is how it is!)...there's no 3 way valve, just a basic gravity DHW and pumped rads...yes, it's quite old !

    heating.JPG

    I cant quite get to grips with what wire goes where on the new Drayton Lifestyle LP522Si dual channel programmer as there's no commoning block and far less connections

    upload_2018-9-17_1-4-27.png

    so any help would be appreciated
    What "plan" is this or is it a mish-mash?

    thanks
     
    Last edited: 17 Sep 2018
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  3. Hot&Cold

    Hot&Cold

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    youl need to partially rewire using a wiring center/junction box to accommodate the tethered neutral,earth and any spare terminations.Some common links will need altering.Then run a new cable to the programmer.

    The st170 has clear terminal instructions,same with the lp product.

    A heating technician,electrician would be able to safety test their work.Can you test your work ? Its important :!:

    some :idea: info here from stem https://www.google.co.uk/search?rlz.....3.0.0....0.GD40rMF1H9w#imgrc=UuQ0-QYlvXvcQM:
     
  4. davidwf

    davidwf

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    thanks...yes, I can test it all - have replaced many timers but they all had a newer back box with the commoning done elsewhere
     
    Last edited: 17 Sep 2018
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