Advertisement
Installation Overview - Complex Systems
Multi-speed fans
The Nest Learning Thermostat is compatible with most multi-speed fans (up to 3 speeds) on systems that use
standard 24 volt wiring. It will control the fan differently depending on how many fan wires are connected.
If your customer has a multi-speed fan with a single wire, the system will control the fan speed, not the Nest
thermostat. This means they'll be able to use the Nest Learning Thermostat to adjust the temperature and turn
the fan on or off, but they won't be able to manually control the fan speed.
If there's more than one fan wire installed, the Nest Learning Thermostat will automatically set the fan speed.
Your customer will also be able to select a speed in the Fan menu.
When using multiple fans speeds, some HVAC functions will become unavailable.
42
Advertisement
Need help?
Do you have a question about the Nest Learning Thermostat 4th Gen and is the answer not in the manual?
Questions and answers
Where is the 4th generation wiring guide
The wiring guide for the Google Nest Learning Thermostat (4th Gen) can be found in its manual.
This answer is automatically generated