Two Wire Configuration - HELP NEEDED - Power Connector Adapter

[yhz]

Hey team! 

I have a Boiler which heats up baseboard radiators. 

Controlling the boiler is this unit:

https://www.heat-timer.com/wp-content/uploads/2019/04/DigiElite-SPC_Manual.pdf

I see there is a 24VAC, COM, EXT+, EXT-. 

Unsure where my current Black and White wire are connected to, But I am open to try connecting it as per the instructions! 

Is this plug and play for a installation of my Nest Gen 3 Learning??

ANY Tips / Advice is appreciated! 

Thanks team!! 

[Houptee]

I don't think your thermostat is connected to that control.

Do you have only 2 wires at the old Tstat? If you have a spare wire in the cable you can connect it as a C common wire but you need to provide pics of the boiler where the thermostat wires connect.

Look for the wire usually brown cable that comes from your tstat and follow it to the boiler connection point.

[aatienza]

Hey folks,

yhz, checking in — we hope you've got the answer you're looking for. Let us know if you have more questions in mind.
 

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