Danger: The installation of high voltage equipment should be performed by a qualified electrician. Please ensure that you comply with local electrical codes and regulations. Improper installation can lead to device failure and even cause a fire. Damage to thermostat due to improper installation is not covered under warranty.
Connect your Mysa Smart Thermostat using supplied wire nuts. Click here to learn how to properly use a wire nut.
Please verify which version of Mysa you are installing. If your Mysa has four wires then it is Mysa-V1-0. If your Mysa has three wires, then it is Mysa-V1-1. Functionally, these thermostats are the same, just with slightly different wiring.
|Mysa L2||Neutral Wire (N)|
|Mysa L1||Supply Wire (L1)|
|Mysa Load||Load Wire|
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|
For more detailed instructions or different wiring setups,
download the Mysa App, tap on “Install & Support”, then “Install”.
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.