York S1-028-12361-700 Pulley Variable 324846-701 most notably the RJNL-B series

most notably the RJNL-B series heat pumps and related gas/electric platforms

ensuring your equipment stays compliant with OSHA safety protocols and factory specifications during routine maintenance or unit heater repair

the E142-1 ensures consistent signal integrity by preventing electrode short-circuiting caused by debris or contact with the combustion housing

reducing overall electrical consumption

a contaminated flame probe or cracked electrode on this assembly is a primary suspect

York S1-028-12361-700 Pulley Variable 324846-701 most notably the RJNL-B seriesThe York S1 028 12361 700 Pulley Variable is an essential OEM component designed for precise HVAC blower speed adjustment and airflow balancing. As a variable pitch sheave, this part allows technicians to fine tune the drive ratio by adjusting the distance between the threaded angular discs. When the flanges are moved closer, the belt pitch diameter increases, raising the driven speed; conversely, widening the gap lowers the diameter to reduce fan