LG ARUM080LTE5, Engineering Product Data Book

Page: 732 / 797

7. Refrigerant piping system
21
Multi V 5
Installation of Outdoor Units
■
Limits of pipe length and difference in height
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)
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.
Connection method Y branch only
Combination of Y
branch/header
Header only
Max.pipe
length
Longest pipe length (L)
: between Outdoor Unit and Indoor Unit A+B+C+D+e
≤
150m [492ft]
(200m [656ft]**)
A+B+b
≤
150m [492ft] )
(200m [656ft]**)
A+C+e ≤ 150m [492ft]
(200m [656ft]**)
A+f
≤
200m
[656ft]
Longest pipe equivalent length* (L)
: between Outdoor Unit and Indoor Unit 175m [574ft]
(225m [738ft]**)
175m [574ft]
(225m [738ft]**)
225m [738ft]
Longest pipe length after 1st branch ( l )
40m [131ft]
(90m [295ft]**)
40m [131ft]
(90m [295ft]**)
40m [131ft]
Total pipe length 1,000m [3,281ft] 1,000m [3,281ft] 1,000m [3,281ft]
Max.difference
in height
Difference in height (H)
: between Outdoor Unit and Indoor Unit
110m [361ft] 110m [361ft] 110m [361ft]
Difference in height (h)
: between Indoor Unit and Indoor Unit
40m [131ft] 40m [131ft] 40m [131ft]
Upward
Outdoor unit
total capacity
Standard Pipe Diameter
Increased Pipe Diameter
When equivalent pipe length is 90m(295ft)
or more from ODU to farthest IDU
When level difference is 50m
or more
HP
Liquid pipe
[mm(inch)]
Gas pipe
[mm(inch)]
Liquid pipe
[mm(inch)]
Gas pipe
[mm(inch)]
Liquid pipe
[mm(inch)]
Gas pipe
[mm(inch)]
8 Ø 9.52(3/8) Ø 19.05(3/4) Ø 12.7(1/2) Ø 22.2(7/8) Ø 12.7(1/2) not increased
10 Ø 9.52(3/8) Ø 22.2(7/8) Ø 12.7(1/2) Ø 25.4(1) * Ø 12.7(1/2) not increased
12 ~ 14 Ø 12.7(1/2) Ø 28.58(1-1/8) Ø 15.88(5/8) not increased Ø 15.88(5/8) not increased
16 Ø 12.7(1/2) Ø 28.58(1-1/8) Ø 15.88(5/8) Ø 31.8(1-1/4) * Ø 15.88(5/8) not increased
18 ~ 22 Ø 15.88(5/8) Ø 28.58(1-1/8) Ø 19.05(3/4) Ø 31.8(1-1/4) * Ø 19.05(3/4) not increased
24 Ø 15.88(5/8) Ø 34.9(1-3/8) Ø 19.05(3/4) not increased Ø 19.05(3/4) not increased
26 ~ 34 Ø 19.05(3/4) Ø 34.9(1-3/8) Ø 22.2(7/8) Ø 38.1(1-1/2) * Ø 22.2(7/8) not increased
36 ~ 60 Ø 19.05(3/4) Ø 41.3(1-5/8) Ø 22.2(7/8) not increased Ø 22.2(7/8) not increased
62 ~ 64 Ø 22.2(7/8) Ø 41.3(1-5/8) Ø 25.4(1) * Ø 53.98(2-1/8) Ø 25.4(1) * not increased
66 ~ 96 Ø 22.2(7/8) Ø 53.98(2-1/8) Ø 25.4(1) * not increased Ø 25.4(1) * not increased