Furnace Blower Fan Wiring Diagram

The fan or furnace blower motor is controlled by the two left connections green dots.

Furnace blower fan wiring diagram.

8 refer to the blower chart for cfm requirements. Variety of furnace fan motor wiring diagram. Assortment of furnace blower motor wiring diagram. Place a jumper connecting y and o.

This diagram is to be used as reference for the low voltage control wiring of your heating and ac system. It shows the elements of the circuit as streamlined shapes and the power and also signal connections in between the devices. The left illustration shows normal wiring for this set up. Hope this helps a few folks.

The furnace limit switch which will turnoff the burner if the temperature limit is reached is controlled by the two right connections red dots. Jump if needed to achieve correct cfm. Video demonstrating the standard wiring for the primary blower motor found in most furnaces and air handlers in residential hvac. Some ac systems will have a blue wire with a pink stripe in place of the yellow or y wire.

A wiring diagram is a streamlined standard pictorial depiction of an electrical circuit.