Haier HSU-36LEA03 User Manual - Page 4

Outdoor unit Outdoor unit 1.Connection of pipes To bend a pipe, give the roundness as large as possible not to crush the pipe Connecting the pipe of gas side first makes working easier. The max vertical distance between the indoor unit and the outdoor unit is 5 m. Half union Flare nut Forced fastening without careful centering may damage the threads and cause a leakage of gas. Spanner Torque wrench Pipe Diameter ( ) Fastening torque Liquid side 6.35mm(1/4") Liquid side 9.52mm(3/8") 18N.m 40N.m Be careful that matters, such as wastes of sands, etc. shall not enter the pipe. 2.Attaching Drain-Elbow Gas side 9.52mm(3/8") Gas side 12.7mm(1/2") Gas side 15.88mm(5/8") 40N.m 50N.m 60N.m If the drain-elbow is used, please attach it as figure. (Note: Only for heat pump unit.) 3.Purging Method: Push the air out of the indoor unit and piping as followes: Tighten the caps on the valves with specified torque. Tighten torque N.m Valve rod Valve cap 7-9 20-25 When connecting pipe exceeds 5 meters, 20g(only for 18kĎor 60g refrigerant shall be added per exceeding meter. Charge according to the following list. Piping length Additional amount for 18k 5m 7m No need 40g 10m 100g Piping length for 24k 30k 32k 36k 5m 7m 10m 20m Additional amount No need 120g 300g 900g Indoor unit A Outdoor unit B A B Indoor unit Outdoor unit Max.Elevation:B=10m Max. Length:A=20m Outdoor unit A B Oil trap C Indoor unit CAUTION In case more than 5 metres，oil trap C should be installed every 5~7m. 4