Zodiac R0457500 Hot Surface Ignitor For LXi(TM) Low NOx Heater
This hot surface ignitor is designed to use with Zodiac Jandy LXi Low NOx pool and spa heater models 250, 300, 400. It is a "glow bar" type silicon carbide unit. It is energized whenever there is a call for heat and the red igniter light on the boiler control is lit. The igniter functions as a flame sensor for the boiler control.