Description
The Cleveland Controls AFS-256-342 N/O Pressure Switch 0.1-2″ WC 24 V is one that is installed in the HVAC system to measure air or gas pressure within a specified range and give a normally open electrical contact when the pressure reaches set points. It is installed in air handlers, furnaces or ventilation circuits and is connected to pressure lines and the control wiring of the system. It is used to indicate safe operating conditions or activate safety measures by closing the circuit when the pressure measured is in the given range to facilitate the correct airflow and equipment protection.
