Samsung RD060PHXEA Installation Manual page 17

Selecting the Refrigerant Pipe
Installing pipes between outdoor unit and first Y-joint
  
Outdoor unit capac-
ity (kW)
RD060PHXEA
RD070PHXEA
RD080PHXEA
RD110PHXEA
RD140PHXEA
RD160PHXEA
Install refrigerant pipe depending on the outdoor unit

capacity.
Use the copper pipe of semi-hard(1/2H) when installing

Ø19.05 of the pipe.
If you use Soft(O) pipe, the internal pressure is too low to
cause personal injury.
When the length of liquid pipe is longer than 70m, step

up the size of gas pipe.
Installing pipes between Y-joints
  
Indoor unit total
capacity (kW)
X < 20.2
Selecting the Y-joint
Select the first Y-joint depending on the outdoor unit capacity.

Select the other Y-joints depending on the total capacity of attached indoor units below the
selected joint individually.
Selecting the first Y-joint
Outdoor capacity (kW)
RD060PHXEA
RD070PHXEA
RD080PHXEA
RD110PHXEA
RD140PHXEA
RD160PHXEA
Keeping Refrigerant Pipe Clean and Dry
To prevent foreign materials or water from entering the pipe, it is important to keep the

refrigerant pipe and to seal it while installing.
Liquid side
Gas side (mm)
(mm)
ø9.52 ø15.88
ø9.52 ø15.88
ø9.52 ø15.88
ø9.52 ø15.88
ø9.52 ø15.88
ø9.52 ø15.88
Liquid side (mm)
ø9.52
Y-joint model Total capacity of attached
indoor units below this
MXJ-YA1509K
Outer
Gas side size
up (mm)
diameter
(mm)
ø19.05
ø 6.35
ø19.05
ø 9.52
ø19.05
ø 12.70
ø19.05
ø19.05 ø 15.88
ø19.05
ø 19.05
ø 22.23
T emper grade and minimum thickness of

the refrigerant pipe
Gas side (mm)
ø15.88
The other Y-joint
Y-joint model
Y-joint (kW)
X < 20.2 MXJ-YA1509K
Minimum
thickness Temper grade
(mm)
0.8
0.8
C1220T-O
(Soft)
0.8
1.0
1.0
C1220T-1/2H
(Semi-hard)
1.0
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