and resets at 1

Common indicators include visible corrosion through the casing

The system supports a total of 30 transmitters

Smith 100208549 Inlet Water Sensor is a critical genuine OEM replacement part engineered for high-precision temperature monitoring in commercial and residential hydronic heating systems

This specific model features a factory-set

Armstrong Fluid Technology 425742-001 Impeller Washer 321702-401 and resets at 1The Armstrong Fluid Technology 425742 001 Impeller Washer is a precision engineered HVAC pump component designed for high performance fluid system maintenance. Engineered to meet exact Armstrong pump repair parts specifications, this stainless steel washer ensures optimal axial positioning and stability for the impeller assembly. By maintaining tight tolerances within the pump casing, it prevents excessive vibration and premature wear on the rotating