Wiring for Nest Thermostat

[johnbryanok]

Hi I am attempting to upgrade Ritetemp 8029 thermostat to Nest thermostat (non learning). Compatibility checker said it may work so I bought it but now setup is saying it’s not compatible. Feels bait and switch to me since the setup goes through a similar flow as the compatibility checker. Can anyone confirm if it is not compatible by the picture attached? Besides the connected wires there is a blue one that goes nowhere currently. Thank you in advance!

 

[Houptee · Accepted solution]

Yes it is compatible looks like a very basic Heat and AC system.

Do not use any jumpers on the Nest or any smart tstat.

So just hook up

Red to R

White to W

Green to G

Yellow to Y

Then you will need a C common wire to keep power on to the Nest.

You have the Blue wire that can be used as C but you need to go to the furnace and remove the cover, find the terminal screws where the thermostat wires connect and look for a screw labeled C (or B in some brands). Connect blue wire if not already connected, then go back and put blue wire on Nest C.

Turn power back on and complete setup.

[johnbryanok]

Wonderful, thank you so much for the quick reply

[Markjosephp]

Hello folks,

Thanks for your assistance, @Houptee. Big help!

Thanks for reaching out, @johnbryanok, I wanted to ensure that everything was covered here. Please let us know if you have any other questions or concerns.

Regards,

Mark

[Markjosephp]

Hello johnbryanok,

I wanted to see if you still needed help. Please let us know if you have any other questions or concerns.

Regards,

Mark

[Juni]

Hello there,

We haven’t heard back from you, so I'll be locking this thread in 24 hours. Feel free to create a new one if you have more questions or have other concerns in the future.
 

Thanks,

Juni