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Installation Manual 27
ENGLISH
Longest pipe length Equivalent pipe length
A+B+C+D+e ≤ 150m(492ft)(200m**(656ft)**)
*
A+B+C+D+e ≤ 175m(574ft) (225m(738ft)**)
Longest pipe length after 1st branch
B+C+D+e ≤ 40m(131ft) 90m(295ft)**)
Difference in height(Outdoor Unit ÷ Indoor Unit)
H ≤ 100m(328ft)
Difference in height (Indoor Unit ÷ Indoor Unit)
h ≤15m(49ft)
Difference in height (Outdoor Unit ÷ Outdoor Unit)
h1 ≤ 5m(16ft)
L
l
H
h
h1
Ú Refrigerant pipe diameter from branch to branch (B,C,D)
Ú Total pipe length = A+B+C+D+a+b+c+d+e ≤ 1,000m(3,281 ft)
• * : Assume equivalent piping length of Y branch to be 0.5m(1.6ft), that of header to be 1m(3.3ft), calculation
purpose.
• ** : To apply Conditional Application
Downward Indoor Unit total capacity
[kW(Btu/h)]
<22.4(76,400) Ø9.52(3/8) Ø19.05(3/4)
< 33(112,600) Ø9.52(3/8) Ø22.2(7/8)
< 47(160,400) Ø12.7(1/2) Ø28.58(1-1/8)
< 71(242,300) Ø15.88(5/8) Ø28.58(1-1/8)
< 104(354,900) Ø19.05(3/4) Ø34.9(1-3/8)
104(354,900) ≤ Ø19.05(3/4) Ø41.3(1-5/8)
Liquid pipe
[mm(inch)]
Gas pipe
[mm(inch)]
Upward Outdoor Unit
total capacity [HP]
8 Ø9.52(3/8) Ø19.05(3/4)
10 Ø9.52(3/8) Ø22.2(7/8)
12~16 Ø12.7(1/2) Ø28.58(1-1/8)
18~22 Ø15.88(5/8) Ø28.58(1-1/8)
24 Ø15.88(5/8) Ø34.9(1-3/8)
26~34 Ø19.05(3/4) Ø34.9(1-3/8)
36 ~ 48 Ø19.05(3/4) Ø41.3(1 5/8)
Liquid pipe
[mm(inch)]
Gas pipe
[mm(inch)]
Ⓐ
Upward Outdoor Unit
total capacity [HP]
20, 22, 24 Ø15.88(5/8) Ø28.58(1-1/8)
26~34 Ø19.05(3/4) Ø34.9(1-3/8)
Liquid pipe
[mm(inch)]
Gas pipe
[mm(inch)]
Ⓔ
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