Mechanical · M-G9MQX

VRF System Refrigerant Piping Schematic and Calculation

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This diagram outlines the refrigerant piping network connecting outdoor condensing units, branch distribution units, and multiple indoor fan coil units across levels three and four. The schematic details specific pipe diameters, equivalent line lengths, and branch controller configurations including PRHR023A, PRHR043A, and PRHR083A units. Additional refrigerant calculations are specified with a total charge of 83.93 pounds for the ARUM312DTE5 combined outdoor system. Individual fan coil units, such as ARNU243M2A4 and ARNU153M2A4, are linked with corresponding liquid and gas line dimensions and lengths.

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