protecting delicate internal windings from excessive heat

this fitting is often referred to by its 3/4" Outside Diameter (OD)

providing immediate visual feedback for system status monitoring

When replacing an existing unit

This non-polar

Aaon P63270 Sensor/Electrode Els PW 17895 protecting delicate internal windings fromThe Aaon P63270 Flame Sensor and Sparker Electrode is a critical combustion component designed for precise flame rectification and reliable ignition in high performance rooftop units and chillers. Engineered to withstand the thermal stresses of continuous burner operation, this dual function electrode ensures consistent HVAC flame sensing to prevent nuisance lockouts and HVAC ignition failure. As a direct OEM Aaon replacement part, the P63270