Mitsubishi Electric CITY MULTI PUMY-P200YKM2 Installation Manual page 10

4. Installing the refrigerant piping
4.1.3-3 Selecting pipe size (Fig. 4-7)
System pipe size
A
A
C
E
B
L1
b c
a
E E
E
en
Branch box pipe size
(1) Valve size for outdoor unit
Branch box
For liquid
Port A
For gas
Port B
Port C (2) Valve size for branch box
Port D
A UNIT
Port E
B UNIT
C UNIT
D UNIT
E UNIT
* 3-branch type : only
9
A Outdoor unit
B First joint
C Branch header (CMY)
D Branch box
E City Multi Indoor unit
F M, S, P series Indoor unit
L2
C D
D
d e
f g h i
E E F
F F F
Fig. 4-7
ø9.52 mm
ø19.05 mm
Liquid pipe ø6.35 mm
Gas pipe ø9.52 mm
Liquid pipe ø6.35 mm
Gas pipe ø9.52 mm
Liquid pipe ø6.35 mm
Gas pipe ø9.52 mm
Liquid pipe ø6.35 mm
Gas pipe ø9.52 mm
Liquid pipe ø6.35 mm
Gas pipe ø12.7 mm
A B C
, , unit
Pipe size
A
L1 [ 60 m or L2 [ 20 m
L1 > 60 m or L2 > 20 m
B, C, D, E
C Total capacity of
indoor units
–16.0 kW
16.1 – 29.1 kW
L1: The farthest piping length from the outdoor unit to an indoor unit.
j
L2: The farthest piping length for the main pipes from the outdoor unit to the
branch box.
a, b, c – j
F
Indoor unit series
City Multi
M series or S series
P series
2-branch joint
4-branch header
8-branch header
Different-diameter joint (optional parts)
Model name
MAC-A454JP-E
MAC-A455JP-E
MAC-A456JP-E
PAC-493PI
PAC-SG76RJ-E
PAC-SG75RJ-E
Different-diameter joint (optional parts for brazing model)
Model name
PAC-SG78RJB-E
PAC-SG79RJB-E
PAC-SG80RJB-E
PAC-SG77RJB-E
PAC-SG76RJB-E
PAC-SJ72RJB-E
2-branch pipe (Joint): Optional parts (According to the connection method,
you can choose the favorite one.)
Model name
MSDD-50AR-E
A liquid pipe
ø9.52
ø12.7
A liquid pipe
L1 [ 60 m or L2 [ 20 m
ø9.52
L1 > 60 m or L2 > 20 m
ø12.7
L1 [ 60 m or L2 [ 20 m
ø9.52
L1 > 60 m or L2 > 20 m
ø12.7
Model number A liquid pipe
10 – 50 ø6.35
63 – 140 ø9.52
200 ø9.52
15 – 42 ø6.35
50 ø6.35
60 ø6.35
71 – 80 ø9.52
35, 50 ø6.35
60 – 100 ø9.52
CMY-Y62-G-E
CMY-Y64-G-E
CMY-Y68-G-E
Connected pipes
Diameter A
diameter
mm mm
→ ø12.7
ø9.52 ø9.52
→ ø9.52
ø12.7 ø12.7
→ ø15.88
ø12.7 ø12.7
→ ø9.52
ø6.35 ø6.35
→ ø15.88
ø9.52 ø9.52
ø15.88 → ø19.05
ø15.88
Connected pipes Outside
diameter Diameter A
mm mm
→ ø12.7
ø9.52 ø9.52
→ ø9.52
ø12.7 ø12.7
→ ø15.88
ø12.7 ø12.7
→ ø9.52
ø6.35 ø6.35
→ ø15.88
ø9.52 ø9.52
ø15.88 → ø19.05
ø15.88
Connection method
flare
B Gas pipe
ø19.05
ø19.05
B Gas pipe
ø15.88
ø19.05
B Gas pipe
ø12.7
ø15.88
ø19.05
ø9.52
ø12.7
ø15.88
ø15.88
ø12.7
ø15.88
Diameter B
mm
ø12.7
ø9.52
ø15.88
ø9.52
ø15.88
ø19.05
Inside
Diameter B
mm
ø12.7
ø9.52
ø15.88
ø9.52
ø15.88
ø19.05