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Nest sanity check

Discussion in 'Plumbing and Central Heating' started by TargetDummy, 25 Oct 2017.

  1. TargetDummy

    TargetDummy

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    Hi all,

    Just about to purchase the 3rd gen Nest Heat Link & Thermostat but first I thought it would be a good idea to do a little research on how it works and how I would replace the existing setup. I've drawn out how the current system works and how I propose to install the new system. Wondering if more knowledgeable installers could check to see if I have everything covered.

    Many thanks.


     
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  2. stem

    stem

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    It all looks good to me. I assume the brown loops between terminals 2 & 3 and 5 & 6 represent the internal switching of the Heatlink and not wires that you plan to add.
     
  3. TargetDummy

    TargetDummy

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    Stem, yes that is correct. The loops between 2 & 3 and 5 & 6 represent the internal switching - it helps me understand the path through the wiring. Thanks for your comment
     
  4. Echo the husky

    Echo the husky

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    Top marks for doing that! (y)
     
  5. stem

    stem

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    Also, it ties up the original ahem....... untidy installation nicely too (y)
     
  6. TargetDummy

    TargetDummy

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    Always pays to understand what you're doing before spending time and money . I've read too many threads along the lines of "bought a nest/hive, trying to fit it and nothing's working".
     
  7. TargetDummy

    TargetDummy

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    I inherited the current installation when I bought the house. It works but it is a bit of a mess with a few wires in the timer, thermostat and wiring centre not connected to anything and not labelled correctly. Luckily I can use a multimeter so I could determine the current situation and plan for a replacement. The main reason for doing this is the current Honeywell thermostat/timer temperature sensor isn't very accurate and the lcd screen is failing so instead of buying a direct replacement, I thought I'd look at alternatives.
     
  8. TargetDummy

    TargetDummy

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    Installed & working :)

     
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  9. Echo the husky

    Echo the husky

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    That's good news, now turn it down!!
     
  10. TargetDummy

    TargetDummy

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    I'd love to, but I'm outnumbered 3 to 1 - wife, daughter & grand daughter :)
     
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