Furnace Wiring Colors

Assortment of goodman furnace wiring schematic.

Furnace wiring colors. Well explained tutorial on wire color codes. 18 gauge thermostat wire is recommended for any distances up to 250 feet. It s important to determine that your heat pump is compatible with your thermostatbefore you decide. What the color code means for air conditioner and furnace thermostat wires.

A wiring diagram is a streamlined standard pictorial depiction of an electric circuit. Can require up to 8 conductors because of the amount of communication needed between the thermostat and air handler or furnace. Furthermore the wire colors on the transformer will be different than the thermostat wires. For shorter runs use 20 gauge.

Both the furnace control board and the thermostat will usually have the same terminal letters. C wires are necessary for any smart thermostat that needs to be connected to a power source 24 7 regardless of your heat pump type. Linh pacchiana 42 084 views. Choosing the proper gauge.

For example if the red wire is connected to w on the thermostat the furnace should turn on. Furnace thermostat wiring diagram terminal letters on a thermostat and what they control the hot wire 24 volts usually red from the transformer is the main power wire to turn on or off a furnace components. Blue wires are also called c wires because they are the common wire. Additionally the common sometimes black should come from the common side of the transformer.

It shows the parts of the circuit as simplified shapes and the power and also signal links between the gadgets. The thermostat wiring color code guide. The red wire should always come from the hot side of the 24 volt transformer.