Hello, I am trying to setup Nest E to replace my Honeywell thermostat. Honeywell has a black wire connected to U1 terminal. Where should I connect this wire in Nest thermostat? I believe the black wire is for the fresh air ventilation system. I attached photos of my Honeywell thermostat wiring setup.
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Thank you MrVacca. I wired my Nest thermostat according to your pic.
When I enter Pro setup on Nest thermostat, I see this initially:
So, I configure W1 with this setting:
For the * configuration, I have three options: Humidifier, Dehum with AC, and Dehum Standalone. I chose Dehum Standalone. Is this the correct choice? I am a bit concern since I don't have a dehumidifier or humidifier. On my Honeywell thermostat, the black wire is for a fresh air ventilation system.