Nest thermostat

Started by gldddm, December 22, 2020, 09:50:14 PM

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gldddm

December 22, 2020, 09:50:14 PM
have a trane twe040e13fa1 and wanting to connect a nest thermostat. I have 4 wires on the current trane thermostat labeled B, R, S1 and S2 ...no jumpers.
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