I've tried to scroll all the applicable posts in here for this question, and I could've missed something but I couldn't find my exact scenario. So if this is a duplicate post, I apologize but here goes:
I have a TRANE Dual Fuel Elec/Gas Package unit. I will upload previous Trane thermostat wiring and how I currently have my Nest wired. I'm aware that Trane does some proprietary things which is probably why I'm here. In essence, none of the setup guides for wiring match how many wires I have. And I believe the 2 wires in question are the white and black wires.
Previously White = W1 and Black = X2.
On Nest, White = W1 and Black = *. But when I go to configure the system through the Nest thermostat interface, I can only select those 2 wires as "Alt. Heat" and "Alt. Heat 2". Or the "*" could be labeled Emergency heat but it only gives "Elec" as the option for source.
I've previously thought of my unit as only having one stage of Aux heat when the heat pump can't keep up in cold temperatures so I'm confused by the 2 stages of "Alt. Heat". I have not tested it yet as I wanted the warm and fuzzy that my wiring was correct.
So my primary question is, is that wiring correct? And 2nd, is that software configuration correct?
Happy to take/post more pictures as needed.
** Edit ** Best I can do for pictures right now:
Old Trane Thermostat Wiring: https://photos.app.goo.gl/KNYJALG8aQk7BV7D9
Questionable new wiring: https://photos.app.goo.gl/ZKsNXwUiBLiMmiVG6
Thank you!
