Lennox 47W39 Filter Drier 328140 751 This 120V crankcase heater keeps This 120V crankcase heater keeps the compressor oil temperature above the refrigerant boiling point The Belimo ZG 103 is a heavy duty universal right angle bracket engineered for specialized applications where a damper shaft is inaccessible or a standard direct mount configuration is not feasible it is recommended to install this drier in the liquid line as close to the expansion device as possible to guard against contaminants before they enter the evaporator The Lennox 47W39 Filter Drier is a critical liquid line refrigerant component engineered for high pressure R410A system protection