LG Multi V, Руководство по установке, Страница: 33 / 113

ENGLISH
Installation Manual 33
Pipe connections between indoor and outdoor unit
Ú
Refrigerant pipe diameter from branch to branch (B,C,D)
Ú
Total pipe length = A+B+C+D+a+b+c+d+e ≤ 3281ft(1000m)
• * : Assume equivalent piping length of Y branch to be 1.6ft(0.5m), that of header to be 3.3ft(1m), calculation
purpose.
• ** : To apply Conditional Application
Downward Indoor Unit total capacity
[kW(Btu/h)]
≤ 5.6(19,100) 1/4(Ø6.35) 1/2(Ø12.7)
< 16.0(54,600) 3/8(Ø9.52) 5/8(Ø15.88)
≤ 22.4(76,400) 3/8(Ø9.52) 3/4(Ø19.05)
< 33.6(114,700) 3/8(Ø9.52) 7/8(Ø22.2)
< 50.4(172,000) 1/2(Ø12.7) 1
1
/
8
( Ø28.58)
< 67.2(229,400) 5/8(Ø15.88) 1
1
/
8
(Ø28.58)
< 72.8(248.500) 5/8(Ø15.88) 1 3 /
8
(Ø34.9)
< 100.8(344,000) 3/4(Ø19.05) 1 3 /
8
(Ø34.9)
< 173.6(592,500) 3/4(Ø19.05) 1 5 /
8
(Ø41.3)
< 184.8(630,700) 7/8(Ø22.2) 1 3 /
4
(Ø44.5)
< 224.0(764,400) 7/8(Ø22.2) 2(Ø53.98)
Liquid pipe
[inch(mm)]
Gas pipe
[inch(mm)]
Longest pipe length Equivalent pipe length
A+B+C+D+e ≤ 492ft(656ft**(200m)) *A+B+C+D+e ≤ 574ft(656ft**(200m))
Longest pipe length after 1st branch
B+C+D+e ≤ 131ft**(40m))
Difference in height(Outdoor Unit
÷
Indoor Unit)
H ≤ 361ft(110m)
Difference in height (Indoor Unit
÷
Indoor Unit)
h ≤ 49ft(15m)
Difference in height (Outdoor Unit
÷
Outdoor Unit)
h1 ≤ 16.4ft(5m)
L
l
H
h
h1
WARNING
If overall equivalent pipe length is greater than or equal to 295ft(90m) from ODU to the longest IDU,
The diameter of the main pipe (Gas and Liquid pipes) must be increased as follow.
Ú
Refrigerant pipe diameter from outdoor unit to first branch. (A)
h
If the step up size is not available, you can not select the next higher size available.
Outdoor unit
Total capacity
[kW (Btu/h)
Standard Pipe Diameter
Conditional application
(more than 90m from ODU to IDU)
Liquid pipe
[mm (inch)]
Gas pipe
[mm (inch)]
Liquid pipe
[mm (inch)]
Gas pipe
[mm (inch)]
16.0~22.4(54,600~76,400)
Φ
9.52(3/8)
Φ
19.05(3/4)
Φ
12.7(1/2)
Φ
22.2(7/8)
28.0(95,900)
Φ
22.2(7/8)
Φ
25.4(1)
33.6~44.8(172,000~152,900)
Φ
12.7(1/2)
Φ
28.58(1 1/8)
Φ
15.88(5/8)
Φ
28.58(1 1/8)
50.4~61.6(172,000~210,600)
Φ
15.88(5/8)
Φ
19.05(3/4)
Φ
31.8(1 1/4)
67.2(229,400)
Φ
34.9(1 3/8)
Φ
34.9(1 3/8)
72.8~95.2(248,500~324,900)
Φ
19.05(3/4)
Φ
22.2(7/8)
Φ
38.1(1 1/2)
100.8~168.0(344,000~573,300)
Φ
41.3(1 5/8)
Φ
41.3(1 5/8)
173.6~179.2(592,500~611,600)
Φ
22.2(7/8)
Φ
44.5(1 3/4)
Φ
25.4(1)
Φ
53.98(2)
184.8~224.0(630,700~764,400)
Φ
53.98(2)