Step 6: Thermostat
Controls temperature, connects to the motion sensors and measures temperature, humidity, and occupancy
Not using Mesa for HVAC controls? Here is the installation guide for the thermostat section.
If you’re using Mesa for HVAC controls, first ensure that the old thermostat is working properly. ⚠️ Use the circuit breaker box to power off Heating, Ventilation, and Air Conditioning (HVAC) systems. Remove the old thermostat cover. 🛑 STOP if you see warning indicators about “HIGH VOLTAGE,” 110 VAC, 120 VAC, 240 VAC, or L1 L2 markings. Check to ensure you have a C wire connected to the old thermostat. If not, contact support.
Take a picture of the existing wiring. One at a time, disconnect and label the wires from your old thermostat using the labels provided. Remove the old thermostat back plate, and place the new one (pull wires through, and mount using screws or adhesive). Insert your R wires. If you have more than one R wire: R or RC ➔ RC and RH ➔ RH. If not, insert single wire: R, RC, or RH ➔ RC. Insert your remaining wires into the side (not the front) of their corresponding terminal blocks. Push excess wire back into the wall so that the thermostat will easily snap into place. Gently press your smart thermostat into the backplate until it clicks into place. Turn your HVAC systems on.
That's it! Use the thermostat screen to check that it’s connected to your Wi-Fi by pressing MAIN MENU (three lines at the bottom of the screen) > SETTINGS > Wi-Fi. It should say "Connected to <network name>."