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The FM-SU is designed for indoor use or within an appropriately rated NEMA enclosure
eliminating the need for costly system draining and recharging
Can I swap a 230F manual reset with an auto-reset switch
Standardized Footprint: The 3-1/4" x 2" x 2-1/2" dimensions and universal plate ensure it fits standard control boxes without modification
Durable Construction: Built to withstand extreme temperature fluctuations and moisture exposure common in exterior condenser cabinets
Fenwal 05-128981-048 Lead The FM-SU is designed forThe Fenwal 05 128981 048 Lead is a mission critical 48 inch ignition lead designed specifically for integration with Fenwal direct spark ignition (DSI) systems and burner control modules. For veteran HVACR technicians, this lead provides the necessary 48 inch reach to maintain proper component layout in commercial boilers, water heaters, and industrial heating equipment. Built as a high voltage flame sense wire extension, it ensures precise flame
