The line voltage feeding the furnace to operate the fan blower motor is transformed down to a safer level of 24 volts the gas control valve needs 24 volts to open and after making a series loop through at least one safety device the most basic and mandatory one is an over temperature shut down the power goes up to the thermostat and.
Line voltage thermostat wiring diagram.
A wiring diagram is a simplified conventional photographic representation of an electric circuit.
Our photos and wiring diagram for a marley d 26 wall mounted line voltage thermostat illustrate how this simple 240vac thermostat is wired to the electric baseboard heater.
It reveals the elements of the circuit as simplified shapes as well as the power and also signal links between the tools.
The thermostat interrupts the circuit like a wall switch interrupts a light circuit.
A line voltage thermostat is for a simple heater or cooler and it has only one function.
It connects directly to the 110 or 220 volt power supply not to a 24 volt transformer.
In short the red wires from the switch connect one each to each of the incoming 240vac line voltage wires of the heating circuit.
Electric baseboard heaters are good for spot heating areas of your house that central hvac does not reach.
If you are going to put in a baseboard heater make the thermostat set up the best you can by separating it from the heater body this provides more accurate temperature gauging plus it makes it easier for users to access the thermostat.
Assortment of line voltage thermostat wiring diagram.