Furnace Fan Limit Control Wiring Diagram

Ok i read a little on the fan limit control concept.

Furnace fan limit control wiring diagram. A wiring diagram is a simplified traditional pictorial representation of an electric circuit. If i understood the purpose of the fan limit thermostat i might be able to figure out how to wire it. The fan or furnace blower motor is controlled by the two left connections green dots. The furnace limit switch which will turnoff the burner if the temperature limit is reached is controlled by the two right connections red dots.

This article series describes in detail the installation wiring of furnace combination controls also commonly called the fan limit switch on warm air heating systems. Which the fan is to stop to prevent circulation of cool a ir. It shows the elements of the circuit as streamlined forms and also the power as well as signal links in between the devices. Fan limit control installation instructions this fan and limit control combines in one enclosure a fan switch with an adjustable differential which operates the blower in a forced warm air furnace and a limit switch with a fixed differential which automatically shuts off the burner if the furnace temperature exceeds a predeter mined high point.

Before beginning any wiring make sure you turn the power off. For fan to cycle automatically pull button o u t. It shows the components of the circuit as simplified shapes and the power and signal connections amongst the devices. 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.

I looked on this page and found the following diagram. L4064b move the f an on lever to the temperature at which the fan is to come on. Manual f an switch for constant fan operation push the f an switch button in. Limit setting adjustment these controllers have a limit stop which.

The following is a wiring diagram for a honeywell fan limit switch control. Collection of honeywell fan limit switch wiring diagram. Turn the power off at the furnace and go a step further for safety and turn the power off at the breaker. Doityourself for honeywell fan limit switch wiring diagram by admin from the thousand images on the net regarding honeywell fan limit switch wiring diagram picks the best selections along with best image resolution exclusively for you and this photos is usually among graphics choices inside our ideal photographs gallery in relation to.

The left illustration shows normal wiring for this set up. The limit is a high temperature safety limit i guess. Furnace fan manual override switch wiring help. Furnace fan limit switch wiring diagram wiring diagram is a simplified tolerable pictorial representation of an electrical circuit.