LG ARUM080LTE5 Engineering Product Data Book page 726

Multi V 5
7. Refrigerant piping system
■ Total pipe length = A+B+C1+C2+C3+D+a+b+c+d+e+f+g+i+j+k+l+m+n ≤ 1,000
Total pipe length
(A+B+C1+C2+C3+D+a+b+c+d+e+f+g+i+j+k+l+m+n)
Max.pipe length L
l
H
h
h1
Max.difference in
height
h2
a
b
Note
• * : Assume equivalent piping length of Y branch to be 0.5m (1.64ft), that of header to be 1m (3.28ft), calculation
purpose.
• ** : To apply Conditional Application
WARNING
When the any one (or both ) of below conditions are satisfied, the diameter of main pipe (A) must be
increased according to below table.
• The equivalent length between outdoor unit and the farthest indoor unit is 90m (295ft) or more
(Liquid or Gas pipes are increased in accordance with below table)
• The level difference (Outdoor unit ↔ Indoor unit) is 50m (164ft) or more (Only liquid pipe is increased)
■ Refrigerant pipe diameter from outdoor unit to first branch. (A)
Upward
Outdoorunit
total capacity
HP Liquid pipe[mm(inch)]
8 Ø 9.52 (3/8)
10 Ø 9.52 (3/8)
12 Ø 12.7 (1/2)
14 ~ 16 Ø 12.7 (1/2)
18 ~ 20 Ø 15.88 (5/8)
22 Ø 15.88 (5/8)
24 Ø 15.88 (5/8)
26 ~ 34 Ø 19.05 (3/4)
36 Ø 19.05 (3/4)
38 ~ 60 Ø 19.05 (3/4)
62 ~ 64 Ø 22.2 (7/8)
66 ~ 96 Ø 22.2 (7/8)
Note
• * : If available on site, select pipe size from the pipe diameter table according to capacity.
Otherwise it doesn't need to be increased.
• Model line up could be different in accordance with target region.
Longest pipe length (A+B+C3+D+k)
: between Outdoor Unit and Indoor Unit
Longest pipe Equivalent length*
: between Outdoor Unit and Indoor Unit
Longest pipe length after 1st branch
Between Outdoor Unit and Indoor Unit
Between Indoor Unit and Indoor Unit
Between Outdoor Unit and Outdoor Unit
Between Indoor Unit and HR Unit
Between HR Unit and HR Unit
Between HR Unit and HR Unit within same branch
Standard Pipe Diameter
Low Pressure Gaspipe High Pressure Gaspipe
[mm(inch)] [mm(inch)]
Ø 19.05 (3/4) Ø 15.88 (5/8)
Ø 22.2 (7/8) Ø 19.05 (3/4)
Ø 28.58 (1-1/8) Ø 19.05 (3/4)
Ø 28.58 (1-1/8) Ø 22.2 (7/8)
Ø 28.58 (1-1/8) Ø 22.2 (7/8)
Ø 28.58 (1-1/8) Ø 28.58 (1-1/8)
Ø 34.9 (1-3/8) Ø 28.58 (1-1/8)
Ø 34.9 (1-3/8) Ø 28.58 (1-1/8)
Ø 41.3 (1-5/8) Ø 28.58 (1-1/8)
Ø 41.3 (1-5/8) Ø 34.9 (1-3/8)
Ø 41.3 (1-5/8) Ø 34.9 (1-3/8)
Ø 53.98 (2-1/8) Ø 41.3 (1-5/8)
When equivalent pipe length is 90m(295ft) or more from ODU to farthest IDU
Low Pressure Gaspipe
Liquid pipe[mm(inch)]
[mm(inch)]
Ø 12.7 (1/2) Not increased
Ø 12.7 (1/2) Not increased
Ø 15.88 (5/8) Not increased
Ø 15.88 (5/8) Not increased
Ø 19.05 (3/4) Not increased
Ø 19.05 (3/4) Not increased
Ø 19.05 (3/4) Not increased
Ø 22.2 (7/8) 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
Installation of Outdoor Units
1,000m [3,281ft]
150m [492ft]
(200m [656ft]**)
175m [574ft]
(225m [738ft]**)
40m [131ft]
(90m [295ft]**)
110m [361ft]
40m [131ft]
5m [16.4ft]
15m [49.2ft]
30m [98.4ft]
5m [16.4ft]
High Pressure Gaspipe
[mm(inch)]
Not increased
Not increased
Not increased
Not increased
Not increased
Not increased
Not increased
Not increased
Not increased
Not increased
Not increased
Not increased
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