Haier AB122ACBHA User Manual - Page 22

Installation Procedures Piping Connection Flare connection Liquid pipe Indoor Unit 2-way valve Outdoor unit Gas pipe 3-way valve (1) Dimension of connecting pipe Flare connection Gas pipe Liquid pipe 12.7mm 6.35mm Fit the nut on and fasten 90 + 0.5 (2) The maximum length and drop height of connecting pipe The maximum length is 10m The maximum drop height is 5m. To ensure the efficiency ,Pipes shall be as short as possible. Cautions for piping connection Spanner Do not twist or deform the connecting pipe. Do not mix dusts. The bending radius shall be as large as possible. Both gas pipe and liquid pipe shall be heat insulation. No leakage in the flare. Spanner Joint Nut (3) Piping connection Connecting method Smear refrigerant oil on the joints of piping and flare. The bending radius shall be as large as possible. Align the pipe center when fastening, and tighten the nut, as shown in the figure. Pay attention to not mix foreign matters such as sands in. Diameter of Pipe Liquid Pipe 6.35mm Gas Pipe 12.7mm Tighten Torque 11.8N. m 49.0N. m If not aligned ,tighten the nut by force will damage the nut that result in gas leakage 20