Nordyne 632427R Pressure Switch -0.55" WC

The Nordyne 632427R Pressure Switch is used to prevent and regulate negative pressure in furnaces and other HVAC systems. It is activated at a pressure of -0.55” WC. It checks for pressure change within the furnace to ensure that the airflow is right before the ignition process begins. When the correct pressure is achieved it completes the electrical circuit to start the heating process. It is widely applied in gas furnaces and heating units to ensure the stable operation of the equipment. It also increases the safety of the system, protects it from airflow problems and optimizes the energy consumption by enabling proper control of the system.