LG MULTI V IV PRO ARUN080LLH4 Installation Manual page 32

PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT
32
(Table 2) Refrigerant pipe diameter from outdoor unit to first branch. (A)
Upward
Standard Pipe
Outdoor unit
total capacity
Liquid pipe
HP
[mm(inch)]
8 Ø 9.52(3/8)
10 Ø 9.52(3/8)
12 ~ 14 Ø 12.7(1/2)
16 Ø 12.7(1/2)
18 ~ 22 Ø 15.88(5/8) Ø 28.58(1-1/8) Ø 19.05(3/4)
24 Ø 15.88(5/8)
26 ~ 34 Ø 19.05(3/4)
36 ~ 60 Ø 19.05(3/4)
62 ~ 64 Ø 22.2(7/8)
66 ~ 88 Ø 22.2(7/8)
(Table 3) Refrigerant pipe diameter from first branch to last branch (B,C,D)
Downward indoor unit
total capacity [kW(Btu/h)]
≤ 5.6(19,100)
< 16.0 (54,600)
≤ 22.4 (76,400)
< 33.6 (114,700)
< 50.4 (172,000)
< 67.2 (229,400)
< 72.8(248,500)
< 100.8(344,000)
< 173.6(592,500)
< 184.8(630,700)
≤ 252.0(859,600)
When equivalent pipe length is 90 m
Diameter
or more from ODU to farthest IDU
Gas pipe Liquid pipe
[mm(inch)] [mm(inch)]
Ø 19.05(3/4) Ø 12.7(1/2)
Ø 22.2(7/8) Ø 12.7(1/2)
Ø 28.58(1-1/8) Ø 15.88(5/8) not increased
Ø 28.58(1-1/8) Ø 15.88(5/8)
Ø 34.9(1-3/8) Ø 19.05(3/4) not increased
Ø 34.9(1-3/8) Ø 22.2(7/8)
Ø 41.3(1-5/8) Ø 22.2(7/8)
Ø 44.5(1-3/4) Ø 25.4(1)
Ø 53.98(2-1/8) Ø 25.4(1)
Increased Pipe Diameter
Gas pipe
[mm(inch)]
Ø 22.2(7/8)
Ø 25.4(1)
Ø 15.88(5/8)
Ø 31.8(1-1/4) Ø 15.88(5/8)
Ø 31.8(1-1/4) Ø 19.05(3/4)
Ø 19.05(3/4)
Ø 38.1(1-1/2)
not increased
Ø 53.98(2-1/8)
not increased
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)
Ø15.88(5/8)
Ø19.05(3/4)
Ø19.05(3/4)
Ø22.2(7/8)
Ø22.2(7/8)
When level difference is
50 m or more
Liquid pipe Gas pipe
[mm(inch)] [mm(inch)]
Ø 12.7(1/2) not increased
Ø 12.7(1/2) not increased
not increased
not increased
not increased
not increased
Ø 22.2(7/8) not increased
Ø 22.2(7/8) not increased
Ø 25.4(1) not increased
Ø 25.4(1) not increased
Gas pipe
[mm(inch)]
Ø12.7(1/2)
Ø15.88(5/8)
Ø19.05(3/4)
Ø22.2(7/8)
Ø28.58(1-1/8)
Ø28.58(1-1/8)
Ø34.9(1-3/8)
Ø34.9(1-3/8)
Ø41.3(1-5/8)
Ø44.5(1-3/4)
Ø53.98(2-1/8)