Install Nest E from Honeywell com901

[natopigro]

Good morning everyone,
I bought the Nest Thermostat E and I'm trying to install it instead of my Honeywywell (see photo).
I have a doubt about how to place the cables because I can't find an online reference on the AxByC cable nomenclature.

Can anyone help me?
Thanks in advance

[Jhonleanmel]

Hi natopigro,

Thanks for the photos and for getting back to us.

Wire labels such as A, B, and C indicate a proprietary system.

Proprietary systems usually only work with thermostats made by the same manufacturer. But some proprietary systems may also have the option to use standard heating system wires. Contact a local pro and have them check if your proprietary system can be rewired to be Nest compatible.

Best,
Mel

[Markjosephp]

Hello folks,

Thanks for assisting, Mel.

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

Thanks,

Mark

[Jake]

Hey there,

I wanted to check in, and let you know that I will be locking the thread in 24 hours.

Best regards,

Jake