Trane XL80 Wire Connection to Next Thermostat Question

[dumbbunny]

I can't figure out where I connect the blue wire into the Nest thermostat connector terminal. It is originally connected to the White connector screw. I do notice there is a B in the Nest thermostat connector terminal labeled *OB and I wonder if that is where I connect the blue? Any ideas?

[EdwardT]

HI dumbbunny,

Thanks for reaching out. I want to make sure that we're connecting it to the correct terminal. Could you share the make and model of your previous thermostat?

Thanks,

Edward

[dumbbunny]

TAYSTAT241

[EdwardT]

Hi dumbbunny,

Thanks for the response. We'd like to know more about this. Please fill out this form so we could investigate further.

Thanks,

Edward

[dumbbunny]

I had a lengthy dialogue on Google Nest chat and it was determined my furnace was "partially" compatible with Nest thermostat so I decided to hire a Nest Pro tech to finish the install. He recommended I don't use the Nest thermostat but he said the Nest Learning thermostat would work but I didn't want to spend that much money.

Thanks for following up on this.

[Jake]

Hey there,

I am glad to hear you were able to get an answer, and an HVAC pro to come out. Sorry to hear you need a different device to run the system, though. Please let me know if you have any questions from here, as I would be happy to take a closer look.

Best regards,

Jake

[aatienza]

Hello there,

I just wanted to follow up to see if you still need our help. Please let us know as we would be happy to answer any questions you may have. 
 

I appreciate the help, Edward and Jake.

Thanks,
Archie

[aatienza]

Hi there,

Just checking in to make sure that you've seen our responses. Please let me know if you have other questions or concerns as I will be locking this in 24 hours if I won't hear back from you again. Feel free to start a new thread and we'll be happy to help.
 

Thanks,

Archie