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Thread: Y1 and Y2 - AC & Furnace

  1. #1
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    Question Y1 and Y2 - AC & Furnace

    Hello,

    I have an Ecobee EMS Si thermostat. In regards to wires. How is it possible run AC and Furnace on Y1 and the same for Y2? second stage. how do the outputs on AC and Furnace look and what is their voltage?

  2. #2
    Administrator

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    Quote Originally Posted by tadejm View Post
    Hello,

    I have an Ecobee EMS Si thermostat. In regards to wires. How is it possible run AC and Furnace on Y1
    Can you tell us why you want to do this? Running the AC and heat on Y1 is not typical.










    Quote Originally Posted by tadejm View Post
    how do the outputs on AC and Furnace look and what is their voltage?
    AC will be the Y terminal and the furnace will be the W terminal.

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