installation

[Cicci]

I am replacing a very old mercury thermostat.  I have two wires a black and a white.

The new nest has 6 slots. Y,C,W on left side. G,R,OB on right.

Any suggestions?

[aatienza]

Hey Cicci,

Thanks for reaching out. Let's check — what type of HVAC system do you have? What's the make and model of your previous thermostat? Could you send us a photo of how your old thermostat wired? Also, what country are you located in?

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