Furnace Fan Switch Wiring

This is a simple one about wiring the power to a gas or oil furnace.

Furnace fan switch wiring.

This video is part of the heating and cooling series of training videos made to accompany my websit. It reveals the elements of the circuit as simplified shapes and also the power and signal connections in between the devices. This video shows how to wire a furnace blower motor to an extension cord how to reverse the rotation what informa. Wiring the fan only option is not difficult as long as the thermostat model includes this option and involves a single wire and a little patience.

Hope this helps a few folks. Video demonstrating the standard wiring for the primary blower motor found in most furnaces and air handlers in residential hvac. Before beginning any wiring make sure you turn the power off. This control can be wired to serve as a safety limit switch on a furnace by wiring just the limit terminals on the control.

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. How to wire a furnace or ac blower motor. Doing this can help evenly distribute the air throughout the home which leads to more comfortable temperatures. Wiring the furnace combination fan limit control using the honeywell l4064b as an example.

Step 1 read the instructions that came with the thermostat and the furnace. The following is a wiring diagram for a honeywell fan limit switch control. A wiring diagram is a streamlined conventional pictorial depiction of an electrical circuit. Collection of furnace fan relay wiring diagram.

Wiring diagrams furnace temperature fan limit switch. The air is taken back to the blower through the return air ducts to the furnace and is then returned to the home through the supply air ducts. This one covers some of the problems with the fan center. It is easy to wire a thermostat to your furnace blower with a few tools and a little time.

Turn the power off at the furnace and go a step further for safety and turn the power off at the breaker.