Working great. Not sure if OAuth was needed or not. I don't quite understand that yet.
HE is able to monitor and control the XL850. A one minute push interval is the quickest available, a more responsive push or instantaneous (or at least a few seconds) update would be nice.
I do wish it could also report more details that are shown on the Thermostat itself like, compressor percentage, air filter usage in days, etc... But that info isn't even available on the TRANEHome portal, so not sure it is accessible using this NEXIA integration.
Thanks again!