Furnace Electrical Wiring

Color code how it works diagram.

Furnace electrical wiring. Standard ac with standard furnace control wiring standard furnace standard thermostat standard a c condenser 1st stage heat white 24 volt fan only operation common air conditioning ac contactor control board 1 this diagram is to be used as reference for the low voltage control wiring of your heating and ac system. The electrical circuit for an electric furnace will depend on the number and watt or kw size of the electric heating elements in some cases due to the electrical requirements it may be necessary to install a separate dedicated circuit just for the heating elements or heating strips. Furnace blower motor speed. The thermostat should automatically complete these connections when a set temperature is reached.

Move the switch on the new circuit breaker to the off position. Turn off the main circuit breaker in the service panel remove the cover screws and open the panel. This is a simple one about wiring the power to a gas or oil furnace. This video is part of the heating and cooling series of training videos made to accompany my websites.

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. Testing the wiring system of your furnace is extremely important to ensure that your electrical system can withstand the power requirement of your electric furnace. When the red wire is disconnected from w the furnace should turn off. Video of the day step 1.

If you are in doubt about these things always consult an electrician prior to completing this project to avoid any damage to your new furnace or your home. Remove a knock out plug from the. Hook the back of the circuit breaker on the.