Connect your Mysa Smart Thermostat using supplied wire nuts. Click here on to learn how to properly use a wire nut.
120V Wiring Instructions
A. Connect Mysa’s white wire to the neutral wire - N (usually white).
B. Connect Mysa’s black wire to the supply wire - L1 (usually black) coming from the electrical panel.
C. Connect Mysa’s red wire to the load wire (usually black) going to heater.
D. Connect Mysa’s green wire to the ground wire (usually green or bare copper).
|Mysa White||Neutral Wire (N)|
|Mysa Black||Supply Wire (L1)|
|Mysa Red||Load Wire|
120V Wiring Diagram
The supply and load wires are not interchangeable. If you are unsure which of the two wires is the supply or load wire, simply try one configuration. If Mysa’s display doesn’t light up after finishing the installation, swap the supply and load wires.