A new line voltage thermostat will need to be connected as part of the installation of the new baseboard heater.
Adding thermostat to baseboard heater.
How to do it.
But installing a smart thermostat that is not designed for compatibility with baseboard heating requires added hardware a relay in this case.
Using a wire connector connect the hot supply wire to the thermostat wires.
How to install a wall mounted thermostat to a baseboard heater 1.
Connect the new cable to the heater.
Instead of doing the extra and quite dangerous work consider an option that s already designed for baseboard heating.
Take the cover off the thermostat and remove the screws that attach it to the junction box.
Connect the remaining thermostat wire typically marked t1 or load to the same color supply wire feeding the baseboard heater.
The thermostat can be mounted directly on the heater itself or it can be mounted on the wall so that the circuit wiring passes through the thermostat first on the way to the baseboard heater.
Some thermostat models require you to.
Make the connections at the thermostat.
Turn the circuit breaker off at the main electrical panel that supplies power to the existing baseboard heater and.
Typically this is marked l1 or line step 8.
Installing a compatible smart thermostat is quick and easy.
You can install a thermostat on the baseboard heater itself.
Many heaters come with a kit that allows you to install the thermostat at one end of the heater body.
Pull a cable from the thermostat location to the heater.
While this type of installation is easiest since it does not involve opening up walls it is considered to be inferior to installing the thermostat on the wall.
Label and disconnect wires.