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The Schneider Electric (Erie) VT2221 Valve Body is a professional-grade solution for precise on/off flow control in closed hydronic systems
Precision Control: Critical for enabling demand defrost and preventing premature system shutdowns during extreme temperature swings
typically functioning with a 1 to 20 second "on" delay and a 40 to 120 second "off" delay to ensure consistent thermal regulating and airflow across the heat exchanger
It can be installed in horizontal or vertical piping
Copeland 918-0019-08 Crankcase Heater Els PW 17895 The Schneider Electric (Erie) VT2221The Copeland 918 0019 08 Crankcase Heater is a critical HVACR service part designed to prevent refrigerant migration and maintain oil temperature during compressor off cycles. This belt type crankcase heater is engineered for a 480V electrical configuration, delivering a steady 70W output to ensure optimal viscosity of the compressor lubricant. Proper heat distribution prevents liquid slugging at startup, extending the service life of high capacity
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