Does it work for replacement?

[Troglodyte]

Hello Everyone, 

     So I recently want to change the old thermostat to Nest, but how to conect those? So Do I connect Rh Rc in one R? or? Can anyone help me?

  

[Patrick_Caezza]

Yes, your system is compatible with the Nest 3rd GEN Learning Thermostat or any Nest Thermostat.

Give this wiring a try.

Red - RH to Rc (jumper to RC not needed)

White - O to OB

Yellow - Y to Y1

Green - G to G

Black - C to C

[MelbaDT]

Hey folks, 

Thanks for your detailed answer, Patrick_Caezza. This is greatly appreciated. 

Troglodyte, I'm checking back in if you still have some questions about your thermostat. 

Best, 

Melba

[MelbaDT]

Hey there, 

How's your Nest thermostat now? Let us know if you need more help. 

Best, 

Melba

[MelbaDT]

Hi, 

I haven't heard from you in a while so I'll be locking this thread if there is no update within the day. If you have any new issues, updates or just a discussion topic, feel free to start a new thread in the community.
 

Best, 

Melba