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As an airflow proving switch
Once the system cools to 150°F
eliminating the need for specialized tools
High-Temperature Durability: Constructed from ceramic and specialized alloy to resist oxidation and carbon buildup under extreme BTU loads
Weil McLain 381-330-028 Control Module Els PW 17895 As an airflow proving switchThe Weil McLain 381 330 028 Control Module is the critical electronic logic center for managing Weil McLain CGBoiler sequences and burner operations. Engineering specifications confirm that the 381 330 028 is the direct replacement for 381 330 022, ensuring seamless HVAC part compatibility for legacy system maintenance. This integrated boiler control monitors ignition timing, flame rectification, and safety limit circuits to maintain precise thermal
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