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Installing the Refrigerant Pipework (Continued)
24
E-
Selecting the size of the refrigerant pipe after the first refnet joint
Outdoor unit Type A, B
Total capacity
Liquid pipe
of the indoor
unit
Low
Total capacity
pressure
of the indoor
gas pipe
unit
Outdoor unit Type C
Total capacity
Liquid pipe
of the indoor
unit
Low
Total capacity
pressure
of the indoor
gas pipe
unit
High
pressure
gas pipe
N N
o o
t t
e e
N N
o o
t t
e e
When installing pipe between the refnet joint, the minimum size of the
liquid pipe is Ø9.52(3/8) and the minimum size of the gas pipe is
Ø15.88(5/8).
16,000W or more
4,700W ~ 16,000W or less
4,700W or less
21,000W or more
16,000W ~ 21,000W or less
9,000W ~ 16,000W or less
5,000W ~ 9,000W or less
5,000W or less
16,000W or more
4,700W ~ 16,000W or less
4,700W or less
21,000W or more
16,000W ~ 21,000W or less
9,000W ~ 16,000W or less
5,000W ~ 9,000W or less
5,000W or less
All
(1/2)
Ø 12.70
t0.8
(3/8)
Ø 9.52
t0.8
(1/4)
Ø 6.35
t0.8
1
( )
Ø 28.58
1
t1.2
8
Ø 25.40(1) t1.2
Ø 19.05
(3/4)
t1.0
Ø 15.88
(5/8)
t1.0
Ø 12.70
(1/2)
t0.8
(1/2)
Ø 12.70
t0.8
(3/8)
Ø 9.52
t0.8
(1/4)
Ø 6.35
t0.8
1
( )
Ø 28.58
t1.2
1
8
Ø 25.40(1) t1.2
Ø 19.05
(3/4)
t1.0
(5/8)
Ø 15.88
t1.0
(1/2)
Ø 12.70
t0.8
(3/4)
Ø 19.05
t1.0
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