LG MULTI V IV PRO ARUN080LLS4, Руководство по установке

Страница: 15 / 37

15
E
N
G
L
IS
H
(Table 2) Refrigerant pipe diameter from outdoor unit to first branch. (A)
(Table 3) Refrigerant pipe diameter from first branch to last branch (B,C,D)
Upward
Outdoor unit
total capacity
Standard Pipe
Diameter
Increased Pipe Diameter
When equivalent pipe length is 90m
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 44.5(1-3/4) Ø 25.4(1) Ø 53.98(2-1/8) Ø 25.4(1) not increased
66 ~ 88 Ø 22.2(7/8) Ø 53.98(2-1/8) Ø 25.4(1) not increased Ø 25.4(1) not increased
Downward indoor unit
total capacity [kW(Btu/h)]
Liquid pipe
[mm(inch)]
Gas pipe
[mm(inch)]
≤ 5.6(19,100) Ø6.35(1/4) Ø12.7(1/2)
< 16.0 (54,600) Ø9.52(3/8) Ø15.88(5/8)
≤
22.4 (76,400) Ø9.52(3/8) Ø19.05(3/4)
< 33.6 (114,700) Ø9.52(3/8) Ø22.2(7/8)
< 50.4 (172,000) Ø12.7(1/2) Ø28.58(1-1/8)
< 67.2 (229,400) Ø15.88(5/8) Ø28.58(1-1/8)
< 72.8(248,500) Ø15.88(5/8) Ø34.9(1-3/8)
< 100.8(344,000) Ø19.05(3/4) Ø34.9(1-3/8)
< 173.6(592,500) Ø19.05(3/4) Ø41.3(1-5/8)
< 184.8(630,700) Ø22.2(7/8) Ø44.5(1-3/4)
≤
252.0(859,600) Ø22.2(7/8) Ø53.98(2-1/8)
(Table 4) Conditional Application
WARNING
• In case of pipe diameter B connected after first branch is bigger than
the main pipe diameter A, B should be of the same size with A.
Ex) In case indoor unit combination ratio 120% is connected to 24
HP(67.2 kW) outdoor unit.
1) Outdoor unit main pipe diameter A : Ø 34.9(Gas pipe), Ø
15.88(liquid pipe)
2) Pipe diameter B after first branch according to 120% indoor unit
combination(80.6 kW) : Ø 34.9(gas pipe), Ø 19.05(liquid pipe)
Therefore, pipe diameter B connected after first branch would be
Ø 34.9(gas pipe) / Ø 15.88(liquid pipe) which is same with main
pipe diameter.
!
WARNING
Pipe length after header branching (a~e)
It is recommended that difference in length of the pipes con-
nected to the Indoor Units is minimized. Performance difference
between Indoor Units may occur.
!
Outdoor unit Connection
Indoor Unit Connection
Indoor Unit connecting pipe from branch (a,b,c,d,e)
Indoor Unit capacity
[kW(Btu/h)]
Liquid pipe
[mm(inch)]
Gas pipe [mm(inch)]
≤ 5.6(19,100)
Ø6.35(1/4) Ø12.7(1/2)
< 16.0(54,600) Ø9.52(3/8) Ø15.88(5/8)
< 22.4(76,400) Ø9.52(3/8) Ø19.05(3/4)
< 28.0(95,900) Ø9.52(3/8) Ø22.2(7/8)
WARNING
• In case of pipe diameter B connected after first branch is bigger
than the main pipe diameter A, B should be of the same size
with A.
Ex) In case indoor unit combination ratio 120% is connected to
24HP(67.2 kW) outdoor unit.
1) Outdoor unit main pipe diameter A : Ø34.9(Gas pipe),
Ø15.88(liquid pipe)
2) Pipe diameter B after first branch according to 120% indoor
unit combination(80.6 kW) : Ø34.9(gas pipe), Ø19.05(liquid
pipe)
Therefore, pipe diameter B connected after first branch
would be Ø34.9(gas pipe) / Ø15.88(liquid pipe) which is
same with main pipe diameter.
[Example]
Do not choose the main pipe diameter by downward indoor unit
total capacity but its outdoor unit model name.
Do not let the connection pipe from branch to branch exceed the
main pipe diameter chosen by outdoor unit model name.
EX) Where connecting the indoor units to the 22 HP (61.6 kW)
outdoor unit to 130% of its system capacity (80.1 kW) and
branching 7k (2.2 kW) indoor unit at the 1st branch.
1) Main pipe diameter(22 HP outdoor unit): Ø28.58(gas pipe),
Ø15.88(Liquid pipe)
2) Pipe diameter between 1st and 2nd branch (77.9 kW indoor
units) :
Ø34.9(Gas pipe), Ø19.05(Liquid pipe) in conformity with
downward indoor units.
Since the main pipe diameter of 22HP outdoor unit is
Ø28.58(gas pipe), Ø15.88(Liquid pipe) is used as the main
pipe and the connection pipe between 1st and 2nd branch.
!
Condition Example
1
Diameter of pipes be-
tween first branch and the
last branch should be in-
creased by one step, ex-
cept pipe diameter B,C,D
is same as Diameter A
40 m < B+C+D+e
90 m
’
B, C, D
Change a diameter
2
While calculating whole re-
frigerant pipe length, pipe
B,C,D length should be cal-
culated twice.
A+Bx2+Cx2+Dx2
+a+b+c+d+e
≤
1 000 m
3
Length of pipe from each
indoor unit to the closest
branch
a,b,c,d,e ≤ 40 m
4
Length of pipe from out-
door unit to the farthest
indoor unit 5
(A+B+C+D+e)] - [Length
of pipe outdoor unit to the
closest indoor unit 1
(A+a)] ≤ 40 m
(A+B+C+D+e)-
(A+a)
≤
40 m
• To satisfy below condition to make 40 m ~ 90 m of pipe length after first branch.
Ø6.35
’
Ø9.52, Ø9.52
’
Ø12.7,
Ø12.7
’
Ø15.88, Ø15.88
’
Ø19.05,
Ø19.05
’
Ø22.2, Ø22.2
’
Ø25.4,
Ø25.4
’
Ø28.58, Ø28.58
’
Ø31.8,
Ø31.8
’
Ø34.9, Ø34.9
’
Ø38.1
l
h 30m
H
9
0
m
L
Indoor
Unit
Total pipe length = A+B+C+D+a+b+c+d+e
≤
1,000 m
L
Longest pipe length Equivalent pipe length
A+B+C+D+e ≤ 165 m *A+B+C+D+e ≤ 190 m
l
Longest pipe length after 1st branch
B+C+D+e
≤ 40 m(90 m**)
H
Difference in height (Outdoor Unit
↔
Indoor Unit)
H ≤ 90 m
h
Difference in height (Indoor Unit
↔
Indoor Unit)
h ≤ 30 m
h1
Difference in height (Outdoor Unit
↔
Outdoor Unit)
h1 ≤ 5 m
WARNING
When the any one (or both ) of below conditions are satisfied, the di-
ameter of main pipe (A) must be increased according to below table.
- The equivalent length between outdoor unit and the farthest indoor
unit is 90m or more (Liquid and Gas pipes are increased)
- The level difference (Outdoor unit ↔ Indoor unit) is 50 m or more
(Only liquid pipe is increased)
!
*: Assume equiva-
lent piping
length of Y
branch to be 0.5
m, that of
header to be 1
m, calculation
purpose.
**: To apply Condi-
tional Applica-
tion