Haier HSU-18LEA13-M 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 Be careful that matters, such as wastes of sands, etc. shall not enter the pipe. 2.Attaching Drain-Elbow Pipe Diameter ( ) Fastening torque Liquid side 6.35mm(1/4") Liquid side 9.52mm(3/8") Gas side 9.52mm(3/8") Gas side 12.7mm(1/2") Gas side 15.88mm(5/8") 18N.m 40N.m 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 7-9 Valve cap 20-25 When connecting pipe exceeds 5 meters, 20g or 60g(only for 22k 24k) refrigerant shall be added per exceeding meter. Charge according to the following list. for 5k 7k 9k 10k 12k 13k 18k Piping length 5m 7m 10m Piping length for 22k 24k 5m 7m 10m Additional amount No need 40g 100g Additional amount No need 120g 300g 20m 900g Indoor unit A Outdoor unit B A B Indoor unit Outdoor unit Max.Elevation: for 5K 7K 9K 10K 12K 13K: B=5m for 18K 22K 24K: B=10m Max. Length: for 5K 7K 9K 10K: A=7m for 12K 13K: A=10m for 18K 22K 24K: A=20m 4 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.