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24v myson ufh with nest thermostat

Discussion in 'Home Automation' started by Niall70, 9 Mar 2021.

  1. Niall70

    Niall70

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    Hi guys have 24v myson ufh manifold system set up with 2 zone with actuators. I want to control the zones with nest thermostats I have a cat 5 at the thermostat so that sides all good but I want to know what I need to run from the nest junction box to the manifold. Can anyone help? Cheers
     

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  3. CBW

    CBW

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    So you’ll need to pick up the permanent live and neutral supplies, 2 and 3 at Nest heatlink(s) to the live and switched at mpe222 and the 12v from room thermostat to the terminal strip.
     
  4. Niall70

    Niall70

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    Hi Chris sorry I attached wrong wiring diagram this is thr one?
     
  5. CBW

    CBW

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    I can only see one, Niall.
     
  6. Niall70

    Niall70

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    I deleted the other one and put up new one might take a second. Cheers man
     
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  7. CBW

    CBW

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    Ok, not 100% on this, but you definitely need the permanent live an Neutral supplies for the heatlink to power up, then live and switched 24v to 2 and 3 on Nest, then either 2 core wire from nest stat to heatlink or use usb cable.
     
  8. Niall70

    Niall70

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    Thanks man that's what I was thinking so I'll give it a go with one and see
     
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