The Reznor 209339 Spark Electrode (also identified as PSE-RZ9) is the direct OEM replacement engineered to deliver consistent high-voltage arcing to ignite the gas-air mixture across various unit heater and air handler platforms

This OEM burner assembly is the professional choice for maintaining the high-efficiency combustion standards of LGB Series 1 and Series 2 units

the McDonnell & Miller 194-B acts as a combination controller

Optimized Moisture Absorption: High-density desiccant blend effectively traps water and minimizes acid formation within the refrigerant loop

Lochinvar & A.O. Smith 100113153 Wire Harness 318973-401 The Reznor 209339 Spark ElectrodeThe Lochinvar & A. O. Smith 100113153 Wire Harness is a critical OEM replacement part designed for high efficiency condensing boilers and commercial water heaters. This specialized flame sensor wire harness ensures stable signal transmission between the flame electrode and the integrated control board, preventing nuisance lockout codes caused by high resistance connections or insulation breakdown. Built to withstand the high temperature environment of