Description
The Trane CNT03666 Pressure Control Switch is a safety sensing tool used in heating and cooling systems to monitor air or gas pressure levels inside the unit in HVAC systems. It works by detecting vacuum or pressure changes in the airflow system and opening or closing an electrical circuit when the pressure goes beyond the preset limit, helping confirm proper inducer and vent operation before ignition. It is used in furnaces, packaged units, and combustion systems to ensure safe startup and operation. It improves equipment protection, enhances safety shutdown control, and provides consistent airflow verification, helping maintain safe and efficient performance in systems.
