Nest 2 zone boiler

[Nickev0]

Hello i have  an old boiler with 2 zones  i have 2 wire setup in each floor but i have a spare 3rd wire for c  how do i get the circuit complete one both zones without issues

[Houptee]

How is the wiring connected at the boiler?

Do you have zone valves or do you have a separate circulator pump for each zone?

Post pics of the tstat wires where they connect at the boiler and if there is a transformer near the boiler etc.

[aatienza]

Hey Nickev0,

I'd like to jump in here and check if you've seen Houptee's response. Let us know if you need more help by replying to this thread.
 

I appreciate the help, Houptee.

Thanks,

Archie

[aatienza]

Hey 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. 
 

Thanks,
Archie

[aatienza]

Hello 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