topic Re: H1 H2 wiring compatibility. in Nest Thermostats

H1 H2 wiring compatibility.

CFN — Thu, 08 Dec 2022 12:43:34 GMT

I wanted to see if Nest is compatible with a H1 H2 wiring system. Don’t go by the colors of the wires.

Re: H1 H2 wiring compatibility.

Houptee — Thu, 08 Dec 2022 14:59:37 GMT

What kind of heating system is this for?

It should be Red is power and White is the return back to system to trigger the heat on and off.

If you use the regular Nest you will need to run a new cable to have a C wire.

The Learning Nest is supposed to work without a C wire.

Re: H1 H2 wiring compatibility.

ETD4815162342 — Thu, 08 Dec 2022 15:46:55 GMT

I have the nest gen 3 and I currently have it set up for H1 and H2 for my 2 stage furnace.

Re: H1 H2 wiring compatibility.

CFN — Sun, 11 Dec 2022 11:28:48 GMT

It a forded hot air system.

Re: H1 H2 wiring compatibility.

CFN — Sun, 11 Dec 2022 11:29:53 GMT

Forced hot air.

Re: H1 H2 wiring compatibility.

CFN — Sun, 11 Dec 2022 11:30:26 GMT

How is it wired?

Re: H1 H2 wiring compatibility.

CFN — Sun, 11 Dec 2022 11:32:22 GMT

Sorry, let me be clearer. It an HVAC system.

Re: H1 H2 wiring compatibility.

Houptee — Sun, 11 Dec 2022 16:50:34 GMT

OK go to the furnace and take the front cover off.

Find the thermostat wires and take picture of all the screws in a row showing the labels on the screws.

We need to see if this is a standard heating system and if there is a C common terminal.

Re: H1 H2 wiring compatibility.

CFN — Mon, 12 Dec 2022 03:06:42 GMT

It an HVAC system. No furnace. All forced air.

Re: H1 H2 wiring compatibility.

Houptee — Mon, 12 Dec 2022 04:52:30 GMT

Is it a natural gas heating system?

Can you go to the system and show us a picture of the thermostat wiring connected to the system?

The regular Nest non learning version needs 3 wires to work and looks like you only have 2 wires coming out of the wall.

Re: H1 H2 wiring compatibility.

EdwardT — Thu, 15 Dec 2022 00:46:32 GMT

Hi folks,

@Houptee, thanks for the help!

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

Thanks,

Edward

Re: H1 H2 wiring compatibility.

Markjosephp — Sun, 18 Dec 2022 18:38:17 GMT

Hello there,

Thanks for assisting, Edward.

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

Regards,

Mark

Re: H1 H2 wiring compatibility.

Markjosephp — Mon, 19 Dec 2022 21:54:35 GMT

Hello CFN,

I'm checking in to make sure that you've seen our response. If you have any further questions or concerns, please let us know before we lock this thread in 24 hours.

Thanks,

Mark