Fireye MB-600L Module 326058-756 the 1171051 is the official

the 1171051 is the official superseding part number for the LA21RB552

Featuring a 1-20" WC adjustable range

designed to integrate with the original Sterling motor mount and fan hub assembly

specifically protecting the axial fan blades from debris and preventing accidental contact during system operation

Precise 825 RPM: Optimized for specific air-flow requirements to prevent high-limit trips or coil freezing

Fireye MB-600L Module 326058-756 the 1171051 is the officialThe Fireye MB 600L Module serves as a direct MicroM logic replacement module, engineered for industrial boilers and commercial combustion systems. Designed for use with the Fireye MicroM flame safeguard series, this chassis mounted component manages essential timing and control functions, including pre purge timing and ignition sequence parameters. As a critical flame safeguard controller part, the MB 600L ensures precise execution of the startup