Nest wiring question

[Nelsen3]

I have two tstats (one for upstairs, one for downstairs). I took out a Honeywell Pro series and both had the white wire on the W2 but the Nest setup had me connect the white wire to the W1 slot. Does that sound correct? It is a new home with an all electric system and I’m not 100% confident in what specific system I have 

[Nelsen3]

Below is the old setup, I do have an O/B wire and it is a single fuel (electric) system  

 

[Houptee]

You have a Heat Pump system with Auxiliary electric heat coils that kick on when its really cold outside most likely.

As long as it sets up the W1 as your Aux heat it should be fine.

Did it ask you about setting up the Heat Pump Balance settings?

Read this it explains how it adjusts the system when to use the Aux heat coils for best efficiency.

https://support.google.com/googlenest/answer/9248719?hl=en#zippy=%2Cauxiliary-aux-heat%2Clearn-more-...

[Nelsen3]

Thank you for the reply. No, it never asked about setting up the balance settings but I will take a look at that. I just couldn’t figure out why it would have me connect to W1 and not W2, like the previous one was. 

[Houptee]

You can move it to W2 Aux if it does not seem to be working.

I think it can use either W for the Aux heat on the Learning Model as long as it was defined during setup as being for Aux heat on W1

[EdwardT]

Hi folks,

@Houptee, thanks for the help!

@Nelsen3, how's it going with your Nest Thermostat? Still need our help?

Thanks,

Edward

[Nelsen3]

I think it seems to be working ok. I just wish I knew if it’s causing long term damage to my system or running the most efficient. 

[EdwardT]

Hi Nelsen3,

Thanks for the response. As long as your W2 is configured correctly under equipment, it should be fine. You can click on this link to learn more about this.

Thanks,

Edward

[Jhonleanmel]

Hi folks,

Chiming in to see if you still need assistance with this. Let us know if you have additional questions ― we'd love to help.

Best,
Mel

[Jhonleanmel]

Hi everyone,

Just one quick final check in here since activity has slowed down. We haven't heard from you in a while so we'll be locking this thread if there is no update after 24 hours. If you have any new questions, updates or just a discussion topic, feel free to start a new thread in the Community.

Thanks,
Mel