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| Connection | Description |
|---|---|
| Y1 | Cool |
| Y2 | |
| G | Fan |
| OB | |
| Rc | Power |
| W1 | Heat |
| W2/AUX | |
| C | 24V Common |
| * | Humidifier |
| Rh |
Heat and AC Hookup
Heat, AC and Humidifier Hookup
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In my zone control cabinet, I maretteed connected both *(HUM) wires from the thermostats to the HOT line of the humidifier.
References
| Reference | URL |
|---|---|
| Nest Pro Installer Guide | http://support-assets.nest.com/images/pro-faq/Nest-Pro-Installer-Guide.pdf |
| How to Connect & Setup a Nest Thermostat to Function as a Humidistat | https://ohmefficient.com/connect-nest-thermostat-humidistat/ |
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