Nest Learning Thermostat compatibility

[Dgates]

G,B,R,Y,O,X2,W- is this wiring compatible with the Nest Learning Thermostat? Where will the O and B wire go?

[Jeremyg]

Hi @Dgates!

Thanks for posting in the community. 
Thank you for sharing the details about your wiring. To ensure compatibility with our Nest thermostats, please refer to the following website: Nest thermostat Compatibility Checker. This tool will help you verify if your specific HVAC system is compatible with the Nest thermostat.
If your system is compatible with our Nest thermostats and you want to know how to install it, you can take a look at the following article: Install your Nest thermostat.  
Please let me know if you have more questions. Thank you. 
 
Regards,
Jeremy.

[Patrick_Caezza]

@Dgates 

Post a picture of the original thermostat's wiring here.

If you have a Trane system the the B terminal should be connected to the C terminal at the Nest and the O terminal should be connected to the OB terminal at the Nest.