Description
The Cleveland Controls NS2-1129-00 Air Pressure Switch monitors and responds to airflow conditions. It operates by sensing differential, positive, or negative air pressure through a diaphragm and snap-acting internal switch, triggering an electrical response when set pressure thresholds are reached. In HVAC systems, it is commonly used within furnaces, boilers, and air handling units to verify inducer fan performance and safe airflow before ignition. It plays an essential role in system safety control, supporting the prevention of operation under improper draft vent conditions, thereby supporting heating and combustion system operation.
