4
2
Connecting pipes
Fig
4-2
Fig. 4-1 is a sample of piping system.
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from the refrigerant piping. (liquid pipe/gas pipe)
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is installed, or condensation may occur on the surface of the insulation material.
(Insulation material Heat-resistant temperature: 120 °C, Thickness: 15 mm or more)
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humidity such as in the attic, further addition of insulation may be required.
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the indoor unit and insulation material as well as to the net between the insulation
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(Condensation forming on the piping may result in condensation in the room or
burns when contacting the piping.)
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completed.
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D
Indoor unit
Outdoor unit
15 - 50
63 - 140
200
Gas side
Pipe size (mm)
ø12.7
ø15.88
ø19.05
ø19.05
Liquid side Pipe size (mm)
ø6.35
ø9.52
ø9.52
ø9.52
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Make sure the pipes do not contact the compressor. Abnormal noise or vibration
may result.
1
Pipes must be connected starting from the indoor unit.
Flare nuts must be tightened with a torque wrench.
2
Flare the liquid pipes and gas pipes and apply a thin layer of refrigeration oil (Ap-
plied on site).
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pipes.
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:
arning
:
hen installing the unit
securel
\
connect the re
I
rigerant pipes
E
e
I
ore starting
the co
P
pressor
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IRUWKH&211(&7,21.,7
A
(mm)
A
Liquid pipe
B
Gas pipe
L
[
60 m
ø9.52
ø19.05
/!P
ø12.7
ø19.05
B, C, D
(mm)
C
Total capacity of indoor units
A
Liquid pipe
B
Gas pipe
~
N:
ø9.52
ø15.88
16.1
~
N:
ø9.52
ø19.05
a, b, c, d, e, f
(mm)
D
Model number
A
Liquid pipe
B
Gas pipe
15, 20, 25, 32, 40, 50
ø6.35
ø12.7
63, 80, 100, 125, 140
ø9.52
ø15.88
200
ø9.52
ø19.05
E
Branch kit model
CMY-Y62-G-E
F
4-Branching header
G
8-Branching header
CMY-Y64-G-E
CMY-Y68-G-E
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pipe size and piping length.
A
Flare cutting dimensions
B
Flare nut tightening torque
A
Die
B
Copper pipe
Fig
4-2
A
Fig
4-
A
(Fig.
4-2)
B
(Fig.
4-2)
Table 3 (Fig. 4-3)
4
Installing the re
I
rigerant piping
A
H
B
C
L
Ɛ
D
e
a
h
b
c
d
A
a
b
c
d
e
f
H
h
L
Ɛ
A
: Outdoor Unit
B
: First Branch
C
: Indoor unit
D
: Cap
A+B+C+D+a+b+c+d+e
[
150 m
L = A+B+C+D+e
[
80 m
Ɛ %&'H
[
30 m
H
[
50 m (Outdoor lower H
[
40 m)
h
[
15 m
A+a+b+c+d+e+f
[
150 m
L = A+f
[
PƐ I
[
30 m
H
[
50 m (Outdoor lower H
[
40 m)
h
[
15 m
Fig
4-1
90°± 0.5°
øA
45°± 2°
R0.4 - R0.8
Copper pipe O.D. (mm)
A (mm)
Flare tool for R410A
Flare tool for R22·R407C
Clutch type
ø6.35
0 - 0.5
1.0 - 1.5
ø9.52
0 - 0.5
1.0 - 1.5
ø12.7
0 - 0.5
1.0 - 1.5
ø15.88
0 - 0.5
1.0 - 1.5
ø19.05
0 - 0.5
1.0 - 1.5
Copper pipe O.D.
(mm)
Flare dimensions
øA dimensions (mm)
ø6.35
8.7 - 9.1
ø9.52
12.8 - 13.2
ø12.7
16.2 - 16.6
ø15.88
19.3 - 19.7
ø19.05
23.6 - 24.0
Copper pipe O.D.
(mm)
Flare unt O.D.
(mm)
Tightening torque
1āP
ø6.35
17
14 - 18
ø6.35
22
34 - 42
ø9.52
22
34 - 42
ø12.7
26
49 - 61
ø12.7
29
68 - 82
ø15.88
29
68 - 82
ø15.88
36
100 - 120
ø19.05
36
100 - 120
