Because it is a manual reset switch

applying a high-quality thermal conductive paste to the sensor bulb before insertion into the well is recommended to ensure maximum heat transfer and responsiveness

making it suitable for standard tank insulation thicknesses

What is the maximum operating temperature for the nitrile seals

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

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