How often should these restrictors be inspected

When a high limit switch like the 87H92 detects an overheat condition (above 140°F)

000 FPM for optimized plenum heat recovery

Whether you are managing lighting loads

Utica-Dunkirk PB-011.01 Pilot Assembly Els PW 17895 How often should these restrictorsThe Utica Dunkirk PB 011. 01 is a high performance Natural Gas Pilot Assembly designed for technical precision in demanding residential and light commercial hydronic systems. Engineered for seamless integration with Utica and Dunkirk boilers, this assembly provides the critical ignition source required for main burner transition. It operates within a pilot gas inlet pressure range of 2. 5 to 5. 0 inches water column, delivering a calibrated pilot gas