6 pin Nest Thermostat pin functions

[d1bergman]

What are the functions of each pin on this Nest Thermostat?

Which pins are used to apply 24VAC to the thermostat directly?

Which pins will give a contact closure for heating?

The pins available and marked are Y, C, W, G, R *OB on the Nest Thermostat.

Thanks

[David_K]

What each wire is for is explained in the "Common thermostat wires" section of this help article:
Identify a thermostat wire - Google Nest Help

The "R" wire is used for power on Nest Thermostat, but the help article explains what Rh and Rc wires are. The best thing to do is use the compatibility checker:
Thermostat Compatibility - Google Store

[d1bergman]

HI Davidking and thank you very much for your response confirming power to the Nest thermostat is applied to pins R and C.  Please confirm that the contact closure in the thermostat for heat is between R and W.

Thanks

David 

[David_K]

The W, W1, or W2 wire controls heat. 

[Markjosephp]

Hello folks,

I wanted to ensure that everything was covered here.

Thanks for answering the question, @David_K.

@d1bergman, I hope you've got the answer you're looking for. If you're still in need of assistance, feel free to let us know.

Regards,

Mark

[Markjosephp]

Hi d1bergman,

I'm checking back in — how's it going? Still need our help with your Nest Thermostat's installation? Please take a look at this article and let us know if you need more help.

Regards,

Mark

[Dan_A]

Hey there d1bergman,

We haven't heard from you in a while so we'll be locking this thread if there is no update within 24 hours. If you need assistance or want to discuss topics, feel free to start a new thread.
 

Cheers,

Dan