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Installing the Refrigerant Pipework (Continued)
26
E-
Selecting the Refnet Joint
Selecting the first refnet joint
Select the refnet joint separately for connecting the indoor and
outdoor unit.
Select the first refnet joint model from the outdoor unit referring to the
table below.
Length
Refnet joint
(mm)
model
A
B
420
80
MXJ-Y2209A
460
90
420
80
MXJ-Y3112A
460
90
Selecting the remaining refnet joints
Select the refnet joints according to the total capacity of the indoor units.
Total capacity of indoor units
16000W less
16000W or more
C C
A A
U U
T T
I I
O O
N N
C C
A A
U U
T T
I I
O O
N N
Cut or extend the pipe according to the size of the
connected pipe after selecting the refnet joint.
Remove all burrs from the refnet joint cut surface after
cutting the pipe.
Diameter
[mm(inch)]
C
D
E
F
G
9.52
9.52
6.35
-
-
(3/8)
(3/8)
(1/4)
22.23
19.05
15.88
19.05
15.88
12.70
(3/4)
(5/8)
(7/8)
(3/4)
(5/8)
12.70
12.70
9.52
-
-
(1/2)
(1/2)
(3/8)
31.75
28.58
25.40
25.40
19.05
15.88
1
(5/4)
( )
(1)
(1)
(3/4)
1
8
Refnet joint
H
I
J
K
9.52
6.35
-
-
(3/8)
(1/4)
15.88
12.70
-
(1/2)
(5/8)
(1/2)
12.70
9.52
6.35
6.35
(1/4)
(1/2)
(3/8)
(1/4)
19.05
15.88
12.70
(3/4)
(5/8)
(5/8)
(1/2)
MXJ-2209A
MXJ-3112A
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