Installing Two Baseboard Heaters To One Thermostat

Sometimes we get calls from people who want to know if they can wire multiple heaters to one thermostat.

Installing two baseboard heaters to one thermostat.

There will only be one 10 gauge romex in the third baseboard heater. Frank is confused about series and parallel wiring. At the heater location no wall box is generally required since the wire connection panel on the heater serves as an approved box. Connect one supply wire to one thermostat wire marked l1.

Connect the wires in the same fashion to the second baseboard heater. Thomas with cadet tech support shows you how to install a double pole wall thermostat on a 240 volt electric baseboard heater. Be sure all three heaters have the bare copper wire attached to the green screw on the metal frame of the heater. He wants to connect a small and a large baseboard heater to one thermostat and isn t sure how to go about it although physically the wires will run from the thermostat to one of the baseboards and then on to the other baseboard the way they are connected could be either series or parallel.

How to hook up two baseboard heaters to one thermostat. Route remaining supply and ground wire to the baseboard heater. But series and parallel will not give the same. Check out our voltage blog pos.

The thermostat can be mounted directly on the heater itself or on the wall so that the circuit wiring passes through the thermostat first on the way to the baseboard heater. Installing a baseboard heater is a task most homeowners can do themselves and it takes no more than couple of hours to accomplish. Connect the two bare ground wires together using a wire nut. The answer to that question is yes you can wire multiple heaters to one thermostat if you re using 240 volt heaters and a 240 volt breaker.

This diagram from the baseboard owner s guide shows how to correctly wire multiple baseboard heaters to one thermostat. Connect these wires directly one each to the two wires going to the heating element. Run two lengths of nm cable one from the main service panel to the thermostat location and another cable from the thermostat to the baseboard heater location. Follow the installation instructions above for mounting and wiring your baseboard heater and you re all set.

A new line voltage thermostat will need to be connected as part of the installation of the new baseboard heater. 4 detach the screws holding the baseboard heater to the wall or baseboard with a screwdriver. Connect the two wires carrying the power to the baseboard heaters to the two load terminals on the thermostat.