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Thread: Nest thermostat Install help

  1. #1
    Junior Member

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    Nest thermostat Install help

    We have a Bryant Puron model 556AN060-A.
    The Bryant thermostat had six wires but only used your of them.
    It used white, yellow, green, red. Unused blue and tan wires.
    I connected the white, yellow, green and red wires to the nest and also
    Connected the previously unused blue wire to common.

    Unfortunately, the nest does not do anything.
    If anyone can offer any suggestions, I would be very greatful.
    Thank you,

  2. #2

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    On your existing thermostat were the thermostat wires connected to the ABCD terminals?

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