Google Nest Power Connector Installation Manual page 15

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Connectez le connecteur d'alimentation à votre
appareil CVC plutôt qu'à votre thermostat. Si vous
avez plusieurs thermostats, installez-le à votre
contrôleur de zone*.
Boîte dans laquelle les fils de plusieurs thermostats se connectent
*
28
1. Installer votre thermostat Nest
Installez votre thermostat avant le connecteur
d'alimentation
29

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Questions and answers

Charles Hall
April 8, 2025

can't figure out Where to connect the white AUX wire from my old thermostat (Honeywell) to the Google Mesh 4th Generation Learning Thermostar

1 comments:
Mr. Anderson
May 14, 2025

To connect the white AUX wire from a Honeywell thermostat to a Google Nest Learning Thermostat (4th Generation), do the following:

1. Identify the AUX wire. In many Honeywell systems, the AUX wire is used for emergency or auxiliary heat and often corresponds to the W2 terminal.
2. On the Nest thermostat base, connect the white AUX wire to the W2/AUX terminal.
3. Ensure all other wires are properly matched according to their labels (e.g., R to R, Y to Y, G to G).
4. If your system is heat pump-based, confirm that the Nest is set to recognize the W2/AUX wire as auxiliary heat in the system settings.

Always turn off power before wiring and check wire compatibility in the Nest app or installation guide.

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