Header Branch

Header Branch (ARBL054/ARBL057/ARBL104/ARBL107/ARBL1010/ARBL2010)
Installation Manual
Caution
If branch pipe and field pipe sizing was an insufficient connection and selection, Never operate the rated capacity of air Conditioner.
Be sure to observe the installation manual attached to the optional branch pipe and the installation manual of outdoor unit .
1. Parts of Model
Liquid Side Header
ID6.35
E
A
C
OD12.7
H 50m
B
OD19.05 ID15.88 ID12.7
ID9.52
Insulation For Header
C
c
d
D
3
4
B
D
e
5
3/4 branches
ID15.88
ID9.52
ID6.35
d
D
4
B
e
5
F
D
L 70m
l 30m
b
a
1
2
D
a
C
1
D
Total piping length ≤ 220m
ID6.35
c
D
3
b
Liquid Side Header
ID15.88
X
B
L 100m
C
ID12.7
F
D
l 30m
1 each for gas/liquid sides
E
A
X
h 12m
ID9.52
ID12.7
Gas Side Header
G
A
ID6.35
ID9.52
ID19.05
ARBL054
G
A
Installtion Manual
H 30m
ID12.7
ID15.88
Outdoor unit
First branch
Y-branch
Indoor unit
Header branch
Plugging tube (sealing)
To downward indoor unit
A
h 15m
Gas Side Header
ID12.7
A
tUnit : mm u
▶ Be sure to include shown below supplied parts
ID15.88
2. Restrictions of piping length and high/low difference
Figure 1
2
D
D
Total piping length ≤ 100m
Figure 2
ID19.05
ID9.52
ID12.7
ID28.58
ARBL104
OD28.58
ID25.4
OD12.7
ID22.2
ID9.52
1 each for gas/liquid sides
Gas Side Header
ID12.7
ID15.88
3/4 branches
Liquid Side Header
ID9.52
ID6.35
ID12.7
ID9.52
ID15.88
Permissible values
Item
Insulation For Header
Length
High/Low
difference
ID6.35
Farthest piping length
Farthest piping length after first branch (ℓ)
Figure 1.
Figure 2.
100m
70m
30m
30m
High/Low difference in indoor/outdoor section(H)
50m(40m)*
30m(20m)*
High/Low difference in indoor/indoor section(h)
15m
12m
ID12.7
※ If the outdoor unit is lower than indoor unit, a parenthesized passage is permissible value.
ID19.05
ARBL057
OD12.7
OD19.05 ID15.88 ID12.7
Insulation For Header
Plugging Tubes
1 each for
gas/liquid sides
ID9.52
Insulaion For Enclosed Piping
Ø6.35 : 2 each
Ø12.7 : 2 each
4 PCS
Gas Side Header
ID15.88
3. Restrictions of conneated indoor unit
Liquid Side Header
ID15.88
ID12.7
5/6/7 branches
ID6.35
ID9.52
ID6.35
ID19.05
ID9.52
Y-branch
Y 분지,
ARBL107
OD28.58
ID25.4
ID22.2
OD12.7
Insulation For Header
Plugging Tubes
Gas Side Header
ID12.7
ID15.88
ID15.88
OD28.58
ID25.4
ID9.52
ID6.35
ID12.7
ID9.52
OD12.7
Plugging Tubes
ID9.52
Insulaion For Enclosed Piping
Ø6.35 : 2 each
Ø12.7 : 2 each
Ø15.88 : 2 each
1 each for
gas/liquid sides
Gas Side Header
ID15.88
5/6/7 branches
ID19.05
ID22.2
ID12.7
Header
헤더 branch
분지,
Liquid Side Header
Insulation For Header
ID15.88
Y-branch
Y 분지,
ID9.52
6 PCS
ID6.35
ID28.58
ARBL1010
Header
헤더 branch
분지,
Insulaion For Enclosed Piping
Ø6.35 : 2 each
Ø12.7 : 2 each
Ø15.88 : 2 each
1 each for
gas/liquid sides
Outdoor unit
실외기,
Outdoor
실외기, unit
ID12.7
ID28.58
6 PCS
8/9/10 branches
Liquid Side Header
ID9.52
ID6.35
ID6.35
ID19.05
CAUTION
ID15.88
ID31.8
ID38.1
ID19.05
ID9.52
A Second branch cannot made after a header branch
ARBL2010
OD38.1
OD19.05
ID34.9 ID28.58
Insulation For Header
1 each for
gas/liquid sides
Plugging Tubes
Ø6.35 : 2 each
Ø12.7 : 2 each
Ø15.88 : 2 each
ID15.88
Insulaion For Enclosed Piping
6 PCS
8/9/10 branches
P/NO : 3850A20490C
4. Selection of pipe diameter and header branch
5)
Table 1. Refrigerant pipe diameter from branch
to branch (Fig1.-A, B, C)
Table 2. Between branching and Indoor unit
(Fig1.-a, b, c, d, e)
Downward Indoor unit total capacity
[kW(Btu/h)]
Liquid pipe
(mm)
Gas pipe
(mm)
Indoor Unit capacity [kW(Btu/h)]
~8.3(28,300)
Ø9.52(3/8inch)
Ø15.88(5/8inch)
~17.8(60,700)
Ø12.7(1/2inch)
Ø19.05(3/4inch)
~27.9(95,200)
Ø12.7(1/2inch)
Ø25.4(1inch)
~42.4(144,700)
Ø12.7(1/2inch)
Ø28.58(9/8inch)
~58.5(199,600)
Ø15.88(5/8inch)
Ø31.8(11/4 inch)
~75.4(257,300)
Ø19.05(3/4inch)
Ø38.1(11/2inch)
Liquid pipe
[mm(inch)]
Gas pipe
[mm(inch)]
~4.0(13,600)
Ø6.35(1/4inch)
Ø12.7(1/2inch)
~9.0(30,700)
Ø9.52(3/8inch)
Ø15.88(5/8inch)
~15.0(51,200)
Ø9.52(3/8inch)
Ø19.05(3/4inch)
Sealing tape(Local contents)
Insulation for header
Plupping tube
Field piping insulation
(Local contents)
Insulation for
enclosed piping
※ Exception
Wide Art Cool 4.0 kW (13,600 Btu/h) : Liquid pipe Ø9.52 (3/8 inch)
Gas pipe Ø15.88 (5/8 inch)
A
Sealing tape(Local contents)
Be sure to seal a branch and field piping insulation with
the sealing tape of local contents.
① Prepare the sealing tape to insulation and pipe to be connected
② Select piping size of each part that refer to the below figure
③ If the diameter of branch pipe is different from the size of field piping, match sizes that
refer to right figure after cutting with a pipe cutter in the center of the connections.
④ For non-connected piping at the indoor unit side for refrigerant branching, install the
supplied plugging tubes.
⑤ Refer to the outdoor unit and Y-branch installation manual by using the Y and header
branch at the same time.
Be sure to seal a branch insulation and insulation for enclosed
piping with the sealing tape of local contents .
pipe cutter
6. Installation precaution
① For
installation, Be sure to use the supplied branch kit by LG
Otherwise LG is not responsible for all the insufficient installation.
Connection
② Commercially available piping often contain dust and other materials. Always blow it clean with a dry inert gas. Use care to prevent
dust, water or other contaminants from entering the piping during installation .
A
③ Reduce the number of bending portions as much as possible, and make bending radius as big as possible.
G
A
Insulation for header
6)
G
A
④ Always observe the restrictions on the refrigerant piping.
(such as rated length. The difference between high/low pressures, and piping diameter)
⑤ A second branch cannot made after a header branch.(There are shown by B)
C
C
X
c
d
D
3
4
B
F
e
D
5
X
B
H 30m
B
D
L 100m
c
d
D
3
4
B
l 30m
1
5
A
F
A
D
B
l 30m
b
b
a
C
D
e
L 70m
h 15m
H 50m
E
A
h 12m
E
A
2
D
a
C
1
D
2
D
D
To outdoor unit
Plugging Tube
5. Installation of header branch
1) For sample. 7 branch
3)
A
⑥ Always use a non-oxidizing brazing material for brazing the parts. If a non-oxidizing brazing material is not used, It could cause
clogging or damage to the compressor unit.
Horizontal plane
To outdoor unit
To indoor unit
View from point
in direction of arrow
Header branch pipe must install according to the above
figure.
B
The indoor unit having larger capacity must be installed closer to
than smaller one.
2)
4)
Insulate the header using the
insulation material attached to
the each branch kit as shown
in the figure.
Plugging tube
For non-connected piping at the indoor unit side for refrigerant
branching, install the supplied plugging tubes.
Be sure to insulate the header branch with the supplied insulation.
P/NO : 3850A20490C
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