topic Re: Nest compatibility with Zoneaire unit in Nest Thermostats

Nest compatibility with Zoneaire unit

SOCAL_CELT — Mon, 09 Jan 2023 01:42:06 GMT

I recently purchased a new home that came with a Friedrich Zoneaire heating/cooling wall unit in one of the rooms. I looked at the front of the unit (model PZE09K3SB-A) and it appears I may be able to wire it to my Nest thermostat from my old apartment, I'm attaching some pictures of the unit, does anyone know if this is possible if I buy a wire harness?

Thanks!

Re: Nest compatibility with Zoneaire unit

Houptee — Mon, 09 Jan 2023 03:50:11 GMT

Looks like it will work but you will only have one fan speed you have to choose hi or lo when you connect the G wire to the unit.

You don't need a special wire harness you just use 5 conductor thermostat cable from Home depot or Lowes and the green terminal strip has small screws that clamp the wires tight.

R to RC

C to C

B to O/B

Y to Y

W to W1

G to GL or GH fan speed

Re: Nest compatibility with Zoneaire unit

Markjosephp — Thu, 12 Jan 2023 17:20:33 GMT

Hello folks,

I wanted to ensure that everything was covered here.

Thanks for helping here, @Houptee.

@SOCAL_CELT, I hope you've got the answer you're looking for. How's it going? Have you tried installing your Nest Thermostat? If you're still in need of assistance, feel free to let us know.

Regards,

Mark

Re: Nest compatibility with Zoneaire unit

SOCAL_CELT — Fri, 13 Jan 2023 20:59:10 GMT

I wired the thermostat per the instructions above and I will try to attach pictures - the fan operation works but it blows cold air (AC) rather than heat when it gets below the thermostat heat setting. Any ideas why?

Re: Nest compatibility with Zoneaire unit

SOCAL_CELT — Fri, 13 Jan 2023 21:00:04 GMT

Re: Nest compatibility with Zoneaire unit

Houptee — Fri, 13 Jan 2023 21:07:00 GMT

You can go into the Nest settings on the app and change the output of the OB wire to the other setting.

It has two choices, if it energizes OB in heat or cooling.

Read this how to change the O/B settings

https://support.google.com/googlenest/answer/9257086?hl=en#zippy=%2Cchange-the-ob-wire-settings

Re: Nest compatibility with Zoneaire unit

SOCAL_CELT — Fri, 13 Jan 2023 21:12:06 GMT

Thank you! I'll make that update and should be all set.

Re: Nest compatibility with Zoneaire unit

EdwardT — Mon, 16 Jan 2023 22:39:19 GMT

Hi folks,

@Houptee, thanks for the help!

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

Thanks,

Edward

Re: Nest compatibility with Zoneaire unit

SOCAL_CELT — Mon, 16 Jan 2023 23:33:36 GMT

All set, I followed @Houptee's instructions and it works like a charm. This is a great forum, thanks for all the help!!

Re: Nest compatibility with Zoneaire unit

EdwardT — Tue, 17 Jan 2023 01:57:45 GMT

HI SOCAL_CELT,

Thanks for the update. I'm glad to hear that it's working fine. I will be locking this thread in 24 hours. Please feel free to create a new thread should you have some more questions or concerns in the near future and we'll be more than glad to help.

Thanks,

Edward