LG ARUN096BT2 Installation Manual page 33

WARNING
When the equivalent length between the outdoor unit and a indoor unit is 90 m(295 ft) or more, the size of
main pipes (Liquid pipe and Gas pipe) must be increased one grade.
Gas pipe
8HP .............................Ø19.05(3/4 inch)
10HP. ..........................Ø22.2(7/8 inch)
12, 14HP ......................Ø28.58(1-1/8 inch)
16, 18, 20, 22HP ........Ø28.58(1-1/8 inch)
24HP ...........................Ø34.9(1-3/8 inch)
26, 28, 30, 32HP .........Ø34.9(1-3/8)
7.1.5 Indoor Unit Connection
Indoor Unit connecting pipe from branch (a,b,c,d,e,f)
Indoor Unit capacity [kW(Btu/h)]
5.6(19,100)
< 16.0(54,600)
< 22.4(76,400)
Liquid pipe
Ø22.2(7/8 inch) 8, 10HP .......................Ø9.52(3/8 inch)
Ø25.4(1 inch) 12, 14, 16HP. ..............Ø12.7(1/2 inch)
Not increased 18, 20, 22, 24HP .........Ø15.88(5/8 inch)
Ø31.8(1-1/4 inch) 26, 28, 30, 32 ..............Ø19.05(3/4 inch)
Not increased
Ø38.1(1-1/2 inch)
Liquid pipe
[mm(inch)]
Ø6.35(1/4)
Ø9.52(3/8)
Ø9.52(3/8)
Refrigerant piping installation
Ø12.7(1/2 inch)
Ø15.88(5/8 inch)
Ø19.05(3/4 inch)
Ø22.2(7/8 inch)
Gas pipe
[mm(inch)]
Ø12.7(1/2)
Ø15.88(5/8)
Ø19.05(3/4)
Installation Manual 33