“i have a taco sr530 switching control for my in floor heating zones that my thermostat is wired to . they are using two wires with a third wire folded back. can i use the new nest with this set up .”

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• To make sure that your system is compatible with Nest Learning Thermostat, you can use the Compatibility Checker here: https://store.google.com/us/widget/compatibility/thermostat

  Answered by Nest Support 5 years ago

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• Best doesn't need the pigtail wire (connector) to work. My system also had a pigtail but no longer needs it. You should be fine. Perhaps look at the install videos online and make sure your wires match up otherwise prior to purchasing

  Answered by Smoothieaddict 5 years ago

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