a normally closed circuit is required for ignition

Key Benefits: Precise Thermal Response: The 350-degree trip point provides a reliable safety barrier against excessive heat in the burner compartment

Industrial Durability: Rugged construction withstands the vibrations and pressure fluctuations common in HVAC pneumatic systems

utilizing this 165 degree limit switch ensures the appliance maintains its original design specifications and safety ratings during service and repair modules

As the direct replacement for 5H54751-40

Reznor 131987 Venter Wheel a normally closed circuit isThe Reznor 131987 Venter Wheel is a critical OEM replacement part, specifically the FE125 inducer wheel, engineered for high performance combustion air management. For contractors servicing Reznor gas fired unit heaters, this 4 3 4 inch centrifugal blower wheel features a 1 4 inch bore and CCW (counter clockwise) rotation. Constructed from galvanized metal, it is built to resist corrosion and maintain structural integrity under the high thermal cycles