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Common Questions Which Reznor models use the 259780 relay
the UWH-RB-24-L eliminates the need for complex field wiring
the "C" suffix typically denotes commercial packaging
This part is compatible with various 21-inch upflow and sideflow furnace cabinets
even in complex Daikin-McQuay HVAC air handler configurations
Cleveland Controls AFS-298-391 Sensing Switch R-22 Common Questions Which Reznor modelsThe Cleveland Controls AFS 298 391 is a high performance air pressure sensing switch designed for precision in commercial HVAC and energy management systems. Engineered as a general purpose differential pressure switch, it monitors positive, negative, or vacuum air pressure with a field adjustable set point range from 0. 05" w. c. to 12. 0" w. c. This unit is factory calibrated to change contacts on increasing pressure at 0. 30" w. c. ( 0. 02" w. c.),