Description
The Trane CNT3774 Air Pressure Control is a monitoring and safety component to regulate and verify proper operation within the unit. It senses pressure levels in airflow or combustion pathways and responds by opening or closing electrical contacts to maintain correct operating conditions. Commonly installed in furnaces and air handling equipment, it supports ensuring that airflow and venting are within acceptable limits before system operation continues. This control plays an essential role in system safety and performance by preventing operation under improper pressure conditions and supporting efficient HVAC systems.
