LG ARUN096BT2 Installation Manual - Page 29

ENGLISH 3 Outdoor Units Example : 6 Indoor Units connected : Outdoor Unit : Header branch : Indoor Units : Sealing : Connection branch pipe between Outdoor units: ARCNN30 : Connection branch pipe between Outdoor units: ARCNN20 Slave2 Slave1 Master 10m (32.8ft) or less Refrigerant piping installation L 150m(492ft) 40m(131ft) H 100m(328ft) h 15m(49ft) Branch pipe can not be used after header ➲ Total pipe length = A+a+b+c+d+e+f ≤ 1,000m(3,281 ft) L Longest pipe length * Equivalent pipe length A+f ≤ 150m(492ft) A+f ≤ 175m(574ft) l Longest pipe length after 1st branch f ≤ 40m(131ft) H Difference in height(Outdoor Unit ↔ Indoor Unit) H ≤ 100m(328ft) Difference in height (Indoor Unit ↔ Indoor Unit) h h ≤15m(49ft) Difference in height (Outdoor Unit ↔ Outdoor Unit) h1 h1 ≤ 5m(16ft) WARNING Pipe length after header branching (a~f) It is recommended that difference in length of the pipes connected to the Indoor Units is minimized. Performance difference between Indoor Units may occur. • * : Assume equivalent piping length of Y branch to be 0.5m(1.6ft), that of header to be 1m(3.3ft), calculation purpose • Indoor Unit should be installed at lower position than the header. • Piping length from outdoor branch to outdoor unit ≤ 10m(32.8ft), equivalent length : max 13m(42.6ft) (for 18HP or more) Installation Manual 29