Danger: A qualified electrician should install high voltage equipment. 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-V1-1
A) Connect Mysa’s red L2 wire to the neutral wires - N (usually white).
B) Connect Mysa’s black L1 wire to the supply wire - L1 (usually black) coming from the electrical panel.
C) Connect Mysa’s black load wire to the load wire (usually black) going to the heater.
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Mysa L2 |  |
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Neutral Wire (N) |
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Mysa L1 | |
|
Supply Wire (L1) |
|
Mysa Load | |
|
Load Wire |
Two Heaters
In the case that you have two heaters connected to a single thermostat you can follow the wiring guide below:
A) Connect Mysa’s red L2 wire to the neutral wires - N (usually 3 white).
B) Connect Mysa’s black L1 wire to the supply wire - L1 (usually black) coming from the electrical panel.
C) Connect Mysa’s black load wire to the two load wires (usually black) going to the heaters.
In summary:
|
Mysa L2 | |
|
Neutral Wire (N) |
|
Mysa L1 | |
|
Supply Wire (L1) |
|
Mysa Load | |
|
Load Wire |
Mysa-V1-0
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 the heater.
D) Connect Mysa’s green wire to the ground wire (usually green or bare copper).
In summary:
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Mysa White | |
|
Neutral Wire (N) |
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Mysa Black | |
|
Supply Wire (L1) |
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Mysa Red | |
|
Load Wire |
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Mysa Green | |
|
Group/Copper |
