This unit serves as the direct replacement for S1-025-25974-700

ensuring field compatibility for technicians servicing older units

provided the 24V coil and physical dimensions match your housing

you maintain high signal integrity and prevent hunting or inaccurate positioning in the field

Avoid use with salt water or highly acidic fluids

Lochinvar & A.O. Smith 100208623 Wiring Harness Els PW 17895 This unit serves as theAs a seasoned technician, you know that a reliable ignition sequence is the backbone of any high efficiency system. The Lochinvar & A. O. Smith 100208623 Wiring Harness is the critical electrical link between the integrated Smart System control board and the spark electrode. This OEM spark electrode wiring harness is specifically engineered for Knight XL boiler models KBN600 through KBN800, ensuring the high voltage pulse reaches the electrode without