It is fully compatible with both the Sensus 243-8 and 243-12 models

while the vibration-resistant adjusting screw maintains setpoints in demanding environments

preventing nuisance drop-outs in residential and commercial heating equipment

supporting dynamic load ratings up to 28

Lennox 36N77 Hot Surface Ignitor It is fully compatible withThe 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