LG ARUB115BT2 Installation Manual - Page 33

ENGLISH Refrigerant piping installation ➲ Refrigerant pipe diameter between branches and HR units (B,C,D) Downward indoor unit total capacity [kW(Btu/h)] ≤ 5.6 (19,100) < 16.0 (54,600) < 22.4 (76,400) < 33 (112,600) < 47 (160,400) < 71 (242,300) < 104 (354,900) 104 (354,900) ≤ Liquid pipe [mm(inch)] Ø6.35(1/4) Ø9.52(3/8) Ø9.52(3/8) Ø9.52(3/8) Ø12.7(1/2) Ø15.88(5/8) Ø19.05(3/4) Ø19.05(3/4) Gas pipe [mm(inch)] Low pressure High pressure Ø12.7(1/2) Ø9.52(3/8) Ø15.88(5/8) Ø12.7(1/2) Ø19.05(3/4) Ø15.88(5/8) Ø22.2(7/8) Ø19.05(3/4) Ø28.58(1-1/8) Ø22.2(7/8) Ø28.58(1-1/8) Ø28.58(1-1/8) Ø34.9(1-3/8) Ø28.58(1-1/8) Ø41.3(1-5/8) Ø28.58(1 -1/8) ➲ Total pipe length (A+B+C1+C2+C3+D+a+b+c+d+e+f+g+i+j+k) ≤ 1000m(3280ft) E1 ~ D10 C3 ~ C4 B1 ~ D10 E1 ~ A3 H h g, I, j, k Outdoor unit ~ the farthest indoor unit Equivalent pipe length A+B+C3+D+K ≤ 150m(492ft)(200m(656ft))(*)) A+B+C3+D+K ≤ 175m(574ft)(225m(738ft))(*)) HR Unit ~ neighboring HR Unit D≤ 10m(33ft) First indoor branch ~ the farthest indoor unit B+C3+D+k ≤ 90m(295ft)(*) First outdoor branch ~ the farthest outdoor unit E+F3 ≤ 10m(33ft) Difference in height (outdoor unit ↔ indoor unit) H ≤ 100m(328ft) Difference in height (indoor ~ indoor unit) H ≤ 15m(49ft) Piping length from each indoor unit to the closest HR Unit a,b,c,d,e,f,g, i, j, k ≤ 40m(131ft) CAUTION • Assume equivalent pipe length of Y branch to be 0.5m(1.6ft), calculation purpose. CAUTION: • Should not be exceed 10m(33ft) between neighboring HR unit. • Serial connection of HR units : Capacity sum of indoor units ≤ 160kBtu/hr. Prohibited pattern Prohibited pattern HR1 1 2 3 4 48k 48k 48k 48k • Capacity sum of indoor units is over 160kBtu/hr. Pattern HR1 15m(49ft) HR2 1234 5678 12k 24k 24k 12k 48k 48k 48k 12k • Distance between neighboring HR unit is over 10m, and Capacity sum of indoor units is over 160kBtu/hr. Pattern A A HR1 HR2 HR1 HR2 1 2 3 36k 36k 36k 1 Indoor unit A Y Branch pipe Outdoor Unit Low pressure Gas pipe High pressure Gas pipe Liquid pipe HR Unit 4 36k Gas pipe Liquid pipe 1234 12k 24k 24k 12k Indoor Unit 5678 48k 48k 48k 12k Installation Manual 33