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Johnson Controls P74BA-15 Differential Pressure Control
Manual Override: Features a temporary manual toggle for system testing or emergency bypass without disrupting the master schedule
designed to maintain precise tension and friction parameters required for consistent enthalpy wheel rotation
eliminating the need for custom hardware
Field-Selectable Rotation: Simplified installation with easy-to-configure rotation direction to match damper requirements
York S1-026-42589-000 Assembly 321702-401 Johnson Controls P74BA-15 Differential PressureThe York S1 026 42589 000 is an essential OEM blower housing assembly designed for precision airflow management in high static pressure environments. This technical package includes the heavy duty HVAC blower wheel, central shaft, and pre installed bearings within a rigid housing frame. For contractors handling field replacements, this complete assembly eliminates the labor intensive process of balancing individual components, ensuring the internal