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Indoor unit
Outdoor unit
15-50
63-140
112-140
Gas side
Pipe size (mm)
ø12.7
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Liquid side Pipe size (mm)
ø6.35
ø9.52
ø9.52
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A B
Liquid (mm)
ø9.52
The piping connection size differs according to the type
and capacity of indoor units. Match the piping connec-
tion size of branch box with indoor unit.
If the piping connection size of branch box does not
match the piping connection size of indoor unit, use
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the branch box side.)
Gas (mm)
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Model name
Connected pipes diameter
Diameter A
Diameter B
mm
mm
mm
0$&$-3
ø9.52
o
ø12.7
ø9.52
ø12.7
0$&$-3
ø12.7
o
ø9.52
ø12.7
ø9.52
0$&$-3
ø12.7
o
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ø12.7
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ø6.35
o
ø9.52
ø6.35
ø9.52
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ø9.52
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ø9.52
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Piping preparation
1
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Outside diameter
Insulation thickness
Insulation material
mm
mm
6.35
Heat resisting foam plastic
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9.52
12.7
2
Ensure that the 2 refrigerant pipes are insulated to prevent condensation.
3
Refrigerant pipe bending radius must be 100 mm or more.
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Model name
Connection method
MSDD-50AR-E
ÀDUH
MSDD-50BR-E
brazing
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Refer to the installation manuals of MSDD-50AR-E and MSDD-50BR-E.
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Pipe size
(ømm)
Liquid
ø9.52
Gas
¡
■
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Indoor
unit type
(kW)
15
20
22
25
35
42
50
60
71
Pipe size
(ømm)
Liquid ø6.35 ø6.35 ø6.35 ø6.35 ø6.35 ø6.35 ø6.35 ø6.35 ø9.52 ø9.52
Gas ø9.52 ø9.52 ø9.52 ø9.52 ø9.52 ø9.52 ø12.7
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Indoor unit
type
(kW)
*1
35
*1
50
60
71
100
Pipe size
(ømm)
Liquid
ø6.35
ø6.35
ø9.52
ø9.52
ø9.52
Gas
ø12.7
ø12.7
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(1) Valve size for outdoor unit
For liquid
ø9.52 mm
For gas
¡PP
(2) Valve size for branch box
A
81,7
Liquid pipe
ø6.35 mm
Gas pipe
ø9.52 mm
B
81,7
Liquid pipe
ø6.35 mm
Gas pipe
ø9.52 mm
C
81,7
Liquid pipe
ø6.35 mm
Gas pipe
ø9.52 mm
D
81,7
Liquid pipe
ø6.35 mm
Gas pipe
ø9.52 mm
E
81,7
Liquid pipe
ø6.35 mm
Gas pipe
ø12.7 mm
* 3-branch type : only
A
,
B
,
C
unit
B
A
)LJ
)LJ
A
B
B
B
B
B
Branch box
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Branch box #1
EUDQFKHVSLSHMRLQW
: optional parts.
Branch box #2
Conversion formula
)
ø6.35
)
ø9.52
)
ø12.7
)
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)
ø19.05
A
A
A
B
B
B
B
B
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