Lochinvar & A.O. Smith 100111584 Pump Circulator 321142-301 Verify the mounting bracket and

Verify the mounting bracket and terminal configuration if attempting to use it on M or Blue Angel series burners

As a precision-calibrated 90-120 degree limit switch

allowing for either normally open or normally closed operation to cycle the compressor or solenoid based on ice bank formation

the neoprene diaphragm may be perforated or hardened and requires immediate replacement

including 16200

Lochinvar & A.O. Smith 100111584 Pump Circulator 321142-301 Verify the mounting bracket andThe Lochinvar & A. O. Smith 100111584 Pump Circulator is a critical OEM replacement part designed for high efficiency hydronic heating and domestic hot water systems. Built to withstand the rigorous demands of commercial and residential boilers, this high head circulator pump ensures consistent fluid velocity and thermal distribution across the heat exchanger. It serves as a direct replacement for legacy part numbers such as Lochinvar ARM2801 and A.