Installing the Refrigerant Pipe Work
(Continued)
Selecting the Refrigerant Pipe
Installing pipes between outdoor unit and first Y-joint
Outdoor unit
capacity (kW)
Liquid side
(mm)
Gas side (mm)
Gas side size
up (mm)
RD060PHXEA
ø
9.52
ø
15.88
ø
19.05
RD070PHXEA
ø
9.52
ø
15.88
ø
19.05
RD080PHXEA
ø
9.52
ø
15.88
ø
19.05
RD110PHXEA
ø
9.52
ø
15.88
ø
19.05
RD140PHXEA
ø
9.52
ø
15.88
ø
19.05
RD160PHXEA
ø
9.52
ø
15.88
ø
19.05
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.
Installing pipes between Y-joints
Indoor unit total
capacity (kW)
Liquid side (mm) Gas side (mm)
X < 20.2
ø
9.52
ø
15.88
Outer
diameter
(mm)
Minimum
thickness
(mm)
Temper grade
ø
6.35 0.8
C1220T-O
(soft drawn)
ø
9.52 0.8
ø
12.70 0.8
ø
15.88 1.0
ø
19.05 1.0
C1220T-1/2H
(hard drawn)
ø
22.23 1.0
Temper grade and minimum thickness of
the refrigerant pipe
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