Because it is a manual reset switch

Built with AISI 316 stainless steel springs and a center-guided internal mechanism

This OEM furnace pressure switch operates with a precise set point of -0

and 1098233

making it suitable for standard tank insulation thicknesses

Reznor 270489 Assembly 326058-756 Because it is a manualThe Reznor 270489 Firing Leg Burner Insert Assembly is a critical OEM replacement part engineered for high intensity combustion system maintenance. Designed specifically for Reznor gas fired unit heaters, this firing leg assembly ensures a precise fuel to air mixture across the primary burner insert, facilitating consistent ignition and uniform thermal distribution. Built for the rigors of industrial and commercial heating environments, it maintains