Description
The Nordyne 632422R Pressure Switch is a control component used to sense air pressure levels in HVAC systems. It operates as a single-pole single-throw switch that responds when pressure reaches 1.00 inch water column, sending an electrical signal to permit or interrupt equipment operation. Within HVAC systems, it is placed in furnace or venting circuits to verify proper airflow and draft conditions before ignition. It is commonly used in residential heating units to monitor combustion air movement and support controlled startup and shutdown sequences based on pressure changes.
