Honeywell T87F Support Question
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Question posted by mdsteinconsulting on November 30th, 2017
Changing Thermostat From T87f To Nest, 3rd Gen.
Hello,I am trying to change my thermostat from a Lennox (Honeywell) T87F 2048 to a Nest, 3rd generation.The Honeywell thermostat uses the following wires: R, W, Y, G, B, and O.Nest does not recognize the B and O wires.Please explain what the B and O wires control.Thank you!
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