For technicians performing steam valve maintenance

always verify the contactor wiring diagram and physical dimensions before installation

Universal Compatibility: Designed as a direct service replacement for Robertshaw

maintaining the integrity of the 600V electrical system and protecting expensive downstream compressors and fans from phase-related faults

Trane WHL0643 Wheel THPU32HP7Y For technicians performing steam valveThe Trane WHL0643 is a high performance direct drive blower wheel engineered for critical airflow applications in HVAC systems. Designed with a 9. 88" diameter and a 9. 40" width, this double inlet centrifugal wheel provides the necessary static pressure to maintain consistent CFM across forced air furnaces and air handlers. The unit features a 1 2 inch bore and is balanced for counter clockwise (CCW) rotation, ensuring stable operation and reduced