Lennox 36N77 Hot Surface Ignitor ensuring the sensing element is

ensuring the sensing element is properly submerged in the hottest water within the top 6 inches of the tank

the S8407-034 is the updated and direct replacement for the 8407-034 and other earlier versions

A torque of 8

you prevent internal moisture accumulation and maintain the sanitary standards required in high-volume foodservice environments

you must verify the pick-up and drop-out voltage specifications match the original OEM part to ensure the start capacitor disconnects at the correct motor speed

Lennox 36N77 Hot Surface Ignitor ensuring the sensing element isThe Lennox 36N77 Hot Surface Ignitor is a critical OEM replacement part designed for high performance gas fired combustion systems. Also identified by the identical part number 36N7701, this nitride ignitor is engineered to withstand extreme thermal cycling within residential furnaces and boilers. As a direct fit HSI, it ensures precise gas ignition by delivering a robust heat source that interfaces seamlessly with the furnace's integrated control