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This part fits most Raypak digital and atmospheric heaters
reducing the risk of thermal failure or arcing
While its primary role is moisture detection
ensuring the component remains stable under continuous high-current operation
This HVAC replacement motor replaces obsolete models including MOT8556 and MOT10117
Caleffi ZVR103 Relay 323613-751 This part fits most RaypakThe Caleffi ZVR103 is a high performance 3 zone valve relay designed for professional contractors managing multi zone hydronic heating systems. Engineered for seamless integration, the ZVR103 serves as a direct technical replacement for the HPZC103, providing a robust interface between low voltage 2, 3, and 4 wire thermostats and boiler equipment. This hydronic zone valve controller features a standard 40 VA transformer, which is field expandable to
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