it is critical to ensure the paddle is perpendicular to the airflow and that the orientation does not interfere with the mechanical reset of the snap switch

Direct Cross-Reference: Replaces 75M21

High Load Capacity: Designed for direct switching of motors and fans without the immediate need for external contactors in many configurations

it provides precise staging for Lennox packaged units and split systems

Universal Installation: Teeter-type terminals simplify wiring for both solid and stranded copper conductors

Reznor 197118 Kit 320074-702 it is critical to ensureThe Reznor 197118 DJ20 High Altitude Kit is a critical field adjustment component for technicians servicing Reznor UDAP gas fired unit heaters installed at elevations between 2,001 and 6,000 feet. At higher altitudes, thinner air reduces the pressure differential required to safely prove the inducer motor's draft. This OEM Reznor kit replaces the standard factory settings with a specific DJ20 pressure switch calibrated to maintain the proper sequence