Nordyne 632432R Pressure Switch -0.70" WC

The Nordyne 632432R Pressure-Switch is made to control and monitor airflow pressure at -0.70" WC. This switch is needed to stop ignition if there is not enough pressure. It make sure there is no negative pressure in the inducer fan system before the burner start. As the correct pressure is confirmed, the switch shuts to let ignition take place. This switch is used in Nordyne furnaces and packaged units to improve both safety and system efficiency. These benefits are better safety, protection for the system from airflow problems, and longer equipment life to accurate pressure monitoring.