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15
ENGLISH
A≥B≥C
① IDU side connection pipe
② ODU to ODU connection pipe (1st branch)
③ ODU to ODU connection pipe (2nd branch)
(Master)
AB
(Slave1)
C
(Slave2)
Caution
1 Use the following materials for refrigerant piping.
- Material: Seamless phosphorous deoxidized copper pipe
- Wall thickness : Comply with the relevant local and national
regulations for the designed pressure 3.8 MPa
(551 psi). We recommend the following table as
the minimum wall thickness.
Outer diameter
[mm(inch)]
6.35
(1/4)
9.52
(3/8)
12.7
(1/2)
15.88
(5/8)
19.05
(3/4)
22.2
(7/8)
25.4
(1)
28.58
(1-1/8)
31.8
(1-1/4)
34.9
(1-3/8)
38.1
(1-1/2)
41.3
(1-5/8)
44.45
(1-3/4)
53.98
(2-1/8)
Minimum
thickness
[mm(inch)]
0.8
(0.03)
0.8
(0.03)
0.8
(0.03)
0.99
(0.04)
0.99
(0.04)
0.99
(0.04)
0.99
(0.04)
0.99
(0.04)
1.1
(0.04)
1.21
(0.05)
1.35
(0.05)
1.43
(0.06)
1.55
(0.06)
2.1
(0.08)
2 Commercially available piping often contains dust and other
materials. Always blow it clean with a dry inert gas.
3 Use care to prevent dust, water or other contaminants from
entering the piping during installation.
4 Reduce the number of bending portions as much as possible, and
make bending radius as big as possible.
5 Always use the branch piping set shown below, which are sold
separately.
2, 3 Outdoor Units
For more information, refer accessory installation manual.
Y branch
A
B
To outdoor unit
To branch piping or indoor unit
A
B
Facing
upwards
Facing
downwards
Viewed from point A
in direction of arrow
Within +/- 10
Outdoor Units Model Pipe
2 Unit
Ⓐ
ARCNN21
Liquid Pipe
O.D.15.88(5/8)
I.D.15.88(5/8)
I.D.19.05(3/4)
I.D.22.2(7/8)
O.D.15.88(5/8) I.D.19.05(3/4)
I.D.12.7(1/2) I.D.15.88(5/8)
O.D.12.7(1/2) I.D.9.52(3/8)
I.D.12.7
(1/2)
I.D.9.52
(3/8)
83
(3-9/32)
O.D.19.05(3/4)
70(2-3/4)
I.D.15.88(5/8)
331(13-1/32)
314(12-3/8)
I.D.19.05(3/4)
Gas Pipe
I.D.22.2
(7/8)
I.D.28.58(1-1/8)
I.D.31.8(1-1/4)
I.D.28.58
(1-1/8)
I.D.34.9(1-3/8)
I.D.41.3
(1-5/8)
130(5-1/8)
I.D.38.1
(1-1/2)
I.D.22.2
(7/8)
O.D.28.58
(1-1/8)
I.D.34.9(1-3/8)
111
(4-3/8)
O.D.34.9(1-3/8)
I.D.28.58(1-1/8)
I.D.22.2(7/8)
O.D.28.58
(1-1/8)
416(16-3/8)
408(16-1/16)
I.D.34.9
(1-3/8)
3 Unit
Ⓑ
ARCNN31
Liquid Pipe
O.D.19.05(3/4)
I.D.15.88(5/8)
I.D.22.2
(7/8)
O.D.19.05(3/4)
I.D.22.2(7/8)
I.D.15.88(5/8) I.D.12.7(1/2)
I.D.28.58(1-1/8)
O.D.15.88(5/8) I.D.19.05(3/4)
I.D.19.05
(3/4)
I.D.19.05
(3/4)
334(13-5/32)
281(11-1/16)
I.D.12.7(1/2)
O.D.19.05(3/4) I.D.22.2(7/8)
83
(3-9/32)
Gas Pipe
O.D.34.9(1-3/8) I.D.28.58(1-1/8)
I.D.41.3(1-5/8) O.D.34.9(1-3/8)
I.D.41.3(1-5/8)
I.D.53.98(2-1/8) O.D.41.3(1-5/8)
I.D.22.2(7/8)
O.D.28.58(1-1/8)
I.D.34.9(1-3/8)
I.D.28.58(1-1/8)
I.D.34.9
(1-3/8)
111
(4-3/8)
I.D.44.5(1-3/4)
341(13-7/16)
125(4-29/32)
298(11-23/32)
Y branch
Header
4 branches 7 branches 10 branches
ARBLN01621, ARBLN03321,
ARBLN07121, ARBLN14521,
ARBLN23220
ARBL054 ARBL057 ARBL1010
ARBL104 ARBL107 ARBL2010
6 If the diameters of the branch piping of the designated refrigerant
piping differs, use a pipe cutter to cut the connecting section and
then use an adapter for connecting different diameters to connect
the piping.
7 Always observe the restrictions on the refrigerant piping (such as
rated length, difference in height, and piping diameter).
Failure to do so can result in equipment failure or a decline in
heating/cooling performance.
8 A second branch cannot be made after a header. (These are shown
by .)
Connection of Outdoor units
When installing ODU series, refer below picture.
Please block the pipe knock outs of the front and side panels after
installing the pipes.
(Animals or foreign objects may be brought in to damage wires.)
CAUTION
!
Y-branches between the outside units must be installed
horizontally.
CAUTION
!
1,MFL68980308,영영 2018. 11. 13. 영영 3:23 Page 15
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