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

Designed for professional HVACR control applications

If 24V is present but the contacts do not pull in

Optional Purification: Available with integrated filtration for applications requiring oil-free and particulate-free air delivery

Whether you are retrofitting an older mechanical room or servicing an existing I/A Series pneumatic loop

Lochinvar & A.O. Smith 100271315 Limit Switch 30067439-890 The Reznor 209339 Spark ElectrodeThe Lochinvar & A. O. Smith 100271315 Limit Switch is a critical safety component engineered for high performance hydronic and water heating systems. As a veteran technician knows, maintaining the integrity of the safety loop is non negotiable. This OEM high limit switch is designed to monitor outlet water temperature and provide a positive safety shutdown by interrupting the electrical circuit if temperatures exceed the factory set threshold,