Mitsubishi Electric PUMY-SP112, Руководство по установке

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4. Installing the refrigerant piping
Branch box
Port A
Port B
Port C
Port D
Port E
Branch box pipe size
4.1.3-3 Selecting pipe size
System pipe size
Pipe size
A, B, C, D, E
A
Liquid pipe
B
Gas pipe
ø9.52 ø15.88
L1: The farthest piping length from the outdoor unit to an indoor unit.
L2: The farthest piping length for the main pipes from the outdoor unit to the branch
box.
L3: The farthest piping length from the first joint.
a, b, c – j
Indoor unit series Model number
A
Liquid pipe
B
Gas pipe
City Multi
15 – 50
L3
[
30m ø6.35
ø12.7
L3 ˃ 30m ø9.52*1
63 – 140 ø9.52 ø15.88
M series or S series 15 – 42 ø6.35 ø9.52
50 ø6.35 ø12.7
60 ø6.35 ø15.88
71, 80 ø9.52 ø15.88
P series 35 – 50 ø6.35 ø12.7
60 – 100 ø9.52 ø15.88
* If the pipe size of indoor unit is different, use a different-diameter joint.
*1 If the piping length after the first joint exceeds 30 m, use a pipe size of ø9.52 for
the pipes of the system that exceeds 30 m.
2-branch joint CMY-Y62-G-E
4-branch header CMY-Y64-G-E
8-branch header CMY-Y68-G-E
A
A
E
B
C
C D
D
a
b c
d e
f g h i j
E
E E
E E F
F F F
F
L2
L1
L3
(1) Valve size for outdoor unit
For liquid ø9.52 mm
For gas
ø15.88 mm
(2) Valve size for branch box
A
UNIT
Liquid pipe ø6.35 mm
Gas pipe ø9.52 mm
B
UNIT
Liquid pipe ø6.35 mm
Gas pipe ø9.52 mm
C
UNIT
Liquid pipe ø6.35 mm
Gas pipe ø9.52 mm
D
UNIT
Liquid pipe ø6.35 mm
Gas pipe ø9.52 mm
E
UNIT
Liquid pipe ø6.35 mm
Gas pipe ø12.7 mm
* 3-branch type : only
A
,
B
,
C
unit
Different-diameter joint (optional parts) (Fig. 4-6)
Model name
Connected pipes diameter Diameter A Diameter B
mm mm mm
MAC-A454JP ø9.52
→
ø12.7 ø9.52 ø12.7
MAC-A455JP ø12.7 → ø9.52 ø12.7 ø9.52
MAC-A456JP ø12.7 → ø15.88 ø12.7 ø15.88
PAC-493PI ø6.35
→
ø9.52 ø6.35 ø9.52
PAC-SG76RJ-E ø9.52 → ø15.88 ø9.52 ø15.88
Different-diameter joint (optional parts) (Fig. 4-7)
Model name
Connected pipes diameter
Outside
Diameter A
Inside
Diameter B
mm mm mm
PAC-SG78RJB-E
ø9.52 → ø12.7
ø9.52 ø12.7
PAC-SG79RJB-E
ø12.7 → ø9.52
ø12.7 ø9.52
PAC-SG80RJB-E
ø12.7 → ø15.88
ø12.7 ø15.88
PAC-SG77RJB-E
ø6.35 → ø9.52
ø6.35 ø9.52
PAC-SG76RJB-E
ø9.52 → ø15.88
ø9.52 ø15.88
2-branch pipe (Joint): Optional parts (According to the connection method,
you can choose the favorite one.)
Model name Connection method
MSDD-50AR-E flare
MSDD-50BR-E brazing
Branch box
Model name Number of connected units
PAC-MK3
✽
BC(B) 3-branches (Max. 3 units)
PAC-MK5
✽
BC(B) 5-branches (Max. 5 units)
Note:
✽
= 0, 1, 2, ....
The PAC-MK31/32BC(B) and PAC-MK51/52BC(B) cannot be connected.
A
Outdoor Unit
B
First joint (CMY, MSDD)
C
Branch header (CMY)
D
Branch box (PAC-MK
·
BC(B))
E
City Multi Indoor unit
F
M/S/P series Indoor unit
B
A
Fig. 4-6
Conversion formula
1/4 F ø6.35
3/8 F ø9.52
1/2 F ø12.7
5/8 F ø15.88
3/4 F ø19.05
Fig. 4-7
A (outside)
B (inside)
RG79Y968H01.indb 11 12/28/2017 11:24:54 AM