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Thread: honeywell chronotherm t882a to nest learning thermostat

  1. #1
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    honeywell chronotherm t882a to nest learning thermostat

    I would like to install the Nest but little bit confused about the wires...(attached picture)
    Anyone with the same challenge please?
    Thank you
    Best Regards
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    Last edited by Nicortech; 09-01-2018 at 07:08 AM.

  2. #2

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    R wire to Nest Rh and W wire to Nest W1. If you have the Nest 3rd gen (not E) then take other two wires to Nest's Rc and C - doesn't matter which as they go to a separate transformer that was used to power the clock and now can power the Nest. If you have E then don't use those wires but tape the ends so they don't short anything.

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