topic Re: Thermostats have different wires, have heat only. Is this going to work with regular Nest? in Nest Thermostats

Thermostats have different wires, have heat only. Is this going to work with regular Nest?

Faustus24 — Mon, 03 Apr 2023 22:52:33 GMT

So I possibly made the mistake of getting two nest thermostats thinking they'd be compatible with my oil burner setup... except it sounds like I might have needed to do the learning version. Looking in my thermostats I have a spare wire in one (the green), and seemingly nothing spare in the other unless I can split the white/blue or white/orange.

Do I actually need the learning thermostats to use just the W/Th lines? The solenoids in the basement appear to have far more wires than needed but I have no idea truly what I'm looking at with this rats nest.

Re: Thermostats have different wires, have heat only. Is this going to work with regular Nest?

CoolingWizard — Tue, 04 Apr 2023 02:08:35 GMT

The crazy part is the contractor that put in the “thermostat cable” used telephone/data twisted pair cable. The problem is the cable is 22 gage and a conventional thermostat cable that should be used is 18 or 16 gage. This is the reason they kept the pairs green/white and White/Green together.

The AC Cooling Wizard

Re: Thermostats have different wires, have heat only. Is this going to work with regular Nest?

Faustus24 — Tue, 04 Apr 2023 12:36:08 GMT

Oh boy. Sounds right in line with the rest of the house. We already had to have most of it pulled and re-wired to fix it.

Re: Thermostats have different wires, have heat only. Is this going to work with regular Nest?

CoolingWizard — Wed, 05 Apr 2023 00:12:40 GMT

Did you install a HVAC a thermostat cable with at least 7 conductors?

The AC Cooling Wizard

Re: Thermostats have different wires, have heat only. Is this going to work with regular Nest?

Jenelyn_O — Sun, 09 Apr 2023 15:49:04 GMT

Hi there,

Thanks for reaching out. I just want to confirm if you were able to see the response of CoolingWizard. Please let us know if you still need help so we can further assist you.

I appreciate your help, @CoolingWizard.

Best,
Jenelyn

Re: Thermostats have different wires, have heat only. Is this going to work with regular Nest?

Jenelyn_O — Wed, 12 Apr 2023 16:08:34 GMT

Hi Faustus24,

I wanted to follow up if you still need help. Please let me know if you’re still having any concerns or questions from here, as I would be happy to take a closer look and assist you further.

I appreciate your help, @CoolingWizard.

Thanks,
Jenelyn

Re: Thermostats have different wires, have heat only. Is this going to work with regular Nest?

Faustus24 — Wed, 12 Apr 2023 16:47:09 GMT

Hey CoolingWizard, unfortunately no idea, this house is 70 years old and the previous owner passed away so we don't have anything to go on except the images. From what I'm seeing though it doesn't look like it. Presuming I'll have to swap to the learning version to use the existing wiring.

Re: Thermostats have different wires, have heat only. Is this going to work with regular Nest?

Faustus24 — Wed, 12 Apr 2023 16:47:32 GMT

Thanks Jenelyn, sorry was traveling! Just posted my response.

Re: Thermostats have different wires, have heat only. Is this going to work with regular Nest?

Jenelyn_O — Wed, 12 Apr 2023 19:14:29 GMT

Hey Faustus24,

Thanks for the update. A few questions: in what country you are located? Is it possible for you to find your system control panel? We will be needing to have a clear photo of the wires available on your control board.

Regards,
Jenelyn

Re: Thermostats have different wires, have heat only. Is this going to work with regular Nest?

zoeuvre — Sat, 15 Apr 2023 19:19:09 GMT

Hi everyone,

@Fautus24, thanks for posting here in the Community. Were you able to read the information that Jenelyn has shared? In case you have an update, let us know and we'll be happy to help.

I appreciate the help, Jenelyn.

Best,

Zoe

Re: Thermostats have different wires, have heat only. Is this going to work with regular Nest?

zoeuvre — Tue, 18 Apr 2023 19:28:49 GMT

Hey there,

Before I mark things as resolved I wanted to check in and see if there might be anything else you needed on this or to see if you had any other questions. If there's more you need, just let us know.

Thanks,

Zoe