These combination warm air fan and limit controllers are suitable for various types of forced air heating systems.
Fan limit control switch wiring.
The first thing you will want to notice is the length of the insert for the control.
The fan limit switch on a heating furnace controls when the furnace blower fan turns on and off.
Set the building thermostat to call for heat.
Wiring diagram for fan limit switch.
The other switch turns the fan on and off.
Fan limit control installation faqs.
Fan limit control installation faqs honeywell furnace temperature switch heating how to install wire the controls on furnaces l6064 doityourself com community forums.
Here the furnace limit switch is controlling a line voltage device.
The controllers have 2 switches.
Some are 11 inches some are 8 inches and there are some that are 5 inches for the insert that.
This control also provides a safety limit that turns off the burner or furnace if temperatures at the furnace are too high.
By admin march 14 2018.
Turn off electrical power to the heating system reconnect the fan motor where you previously disconnected it turn on electrical power to the heating system call for heat.
If the fan limit switch worked normally continue as follows.
Fan limit switches are used on all types of building heating furnaces.
One which opens the limit circuit if the plenum temperature exceeds the preset safety limit.