topic Re: Trane XV90 Compatibility in Nest Thermostats

Trane XV90 Compatibility

seansanders82 — Sun, 02 Jan 2022 20:18:05 GMT

Hello,

I was wondering if there is any Nest thermostat that is compatible with a Trane XV90. I am open to any Nest or smart thermostat.

The wires run to my current Trane thermostat are:

Y2 - orange, W2 - black, R - red, W1 - white, Y - yellow, G - green, and B - blue. There is a jumper wire going from R to RC.

Thanks

Re: Trane XV90 Compatibility

johnCNA — Mon, 03 Jan 2022 02:26:06 GMT

I have an XV80, so they are fairly similar. From your wiring labels, it appears you have 2 stage heating and 2 stage cooling. Mine is 2 stage heat and single stage cooling. I have the Nest Learning 3rd Gen model and it works great.

One thing to note is that Trane labels the common wire as B. In your case that's the blue wire. That gets connected to the Nest C terminal. And during the Nest setup, it will ask you which wires you have. Instead of B, tell the Nest that your blue wire is a C. Ours has been working just great.

One of the features I really like is the Heat+Cool mode. In early Spring and late Fall, we have days where it gets cold enough at night to need a little heat, but by the afternoon, we might need a little cooling. In that H+C mode, it automatically switches back and forth as needed. The rest of the year we run it in either Heat only or Cool only.

Re: Trane XV90 Compatibility

seansanders82 — Mon, 03 Jan 2022 16:52:12 GMT

Thanks a ton for the quick reply and helpful information, it’s sincerely appreciated