The 100167445 is primarily used in Lochinvar Knight XL (KBN399 through KBN800) and FTXL (FTX400 through FTX850) models

Contractors should verify the seating surface is clean of residual material before installation to prevent bypass

Is this assembly suitable for high-pressure systems

Key Benefits Heavy-duty 18-gauge metal construction provides superior impact resistance compared to plastic alternatives

Why is my limit switch tripping repeatedly

York S1-025-23280-000 Temp Control The 100167445 is primarily usedThe York S1 025 23280 000 is an OEM SPDT temperature control designed for precise thermal management in heavy duty HVACR applications. Engineered as a high reliability HVAC replacement part, this 0Op 15Cl thermal switch features fixed setpoints where the circuit opens at 0F and closes at 15F. As a Single Pole Double Throw device, it provides the versatile switching logic necessary for controlling defrost cycles, low ambient fan operation, or freeze