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This heavy-duty boiler safety valve is essential for contractors maintaining compliance with jurisdictional pressure vessel codes while ensuring reliable overpressure protection in high-rise or industrial heating applications
Direct Cross-Reference: Engineered for seamless compatibility as a Lau 60556401 replacement for damaged 10625729 propellers
Key Benefits Multi-Speed Versatility: The 4-speed design provides flexibility for various HVAC tonnage and static pressure settings
This kit serves as a direct upgrade
Lennox 23X17 Control Board 320720-756 This heavy-duty boiler safety valveThe Lennox 23X17 Control Board, also identified as the Lennox 620244 02, is an essential demand defrost control designed for high performance heat pump systems. Built to replace previous iterations such as the LEN620244 02, this board integrates multiple critical functions into a single 24V module, including demand defrost logic, a defrost relay, and an anti short cycle timed off control. It features a sophisticated pressure switch system lockout