AFS262 airflow switch install tip in HVAC application Air Proving Switch
Used to monitor airflow within a duct and provides a switched output on detection or loss of airflow. This is how to tell if you have a BAD Pressure Switch on your 80% or 90% efficient gas furnace Explained in detail! Supervision is Air Proving Switch Kits for Beckett RF Oil, Biodiesel, and Renewable How to test an Air Proving or Sail Switch ...