“i wanna purchase the nest but seen i have 2 wires im not sure where they go one is black and the other is orange , do i just eliminate one ???”

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• Nest thermostats are designed to work with most 2-wire 20 - 30V systems. You need to check what the color of the wire is for before you connect it on your Nest Learning Thermostat. We recommend using our Compatibility Checker tool on this link to verify if your system is compatible: https://support.google.com/googlenest/answer/9246656

  Answered by Nest Support 4 years ago

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• The orange wire would go in the O/B terminal. The black I’m not to sure about. It would either go in the * terminal or the C terminal. Hope this helps!

  Answered by ACMCOOK 4 years ago

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