White-Rodgers 21V51U-843 HSI Kit R-410A 01%) to prevent thermal migration

01%) to prevent thermal migration and phantom zone heating

018-inch orifice specifically calibrated for Lennox burner requirements

Can this replace a higher-rated pressure switch

this component allows for an outlet pressure range of 20-42" w

White-Rodgers 21V51U-843 HSI Kit R-410A 01%) to prevent thermal migrationThe White Rodgers 21V51U 843 is a professional grade Universal 2 Stage Integrated Furnace Control Kit designed for high efficiency systems utilizing a variable speed ECM blower motor. This comprehensive HSI ignition control solution replaces over 40 existing White Rodgers models, including the 50V51 XXX and 50V61 XXX series. It features a 16 pin interface for precise ECM motor control and includes a 120V nitride ignitor to upgrade older 80V silicon