the NDIR sensing element is designed to be maintenance-free

To avoid motor overheating

but the technical specifications and 410# pressure ratings remain the same

Replacing a worn 221525 with this genuine Reznor heating part ensures the system maintains its original combustion efficiency and factory-spec safety parameters without the risks associated with universal aftermarket alternatives

Hydrolevel 250 Pump Controller Els PW 17895 the NDIR sensing element isThe Hydrolevel 45 250 (Safgard 250) is a heavy duty 120Vac combination pump controller and low water cut off engineered specifically for steam boiler applications with operating pressures up to 250 PSI. As a veteran preferred solution for maintaining precise boiler water level control, this unit utilizes EL1214 sensing probes and a durable manifold casting to manage the feed pump. By eliminating moving parts within the boiler water, it mitigates