Mitsubishi Electric PUMY-P250YBM2-BS, Technical & Service Manual

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TCH091
Branch box
Port A
Port B
Port C
Port D
Port E
Branch box pipe size
A
Model Liquid pipe Gas pipe
P250 ø9.52* ø22.2
ø22.2
P300 ø12.7
B, C, D, E
Total down-stream capacity
of indoor units
Model Liquid pipe Gas pipe
– 16.0 kW
P250 ø9.52*
ø15.88
P300 ø12.7
16.1 kW – 22.4 kW
P250 ø9.52*
ø19.05
P300 ø12.7
22.5 kW –
P250 ø9.52*
ø22.2
P300 ø12.7
2-branch joint CMY-Y62-G-E
4-branch header CMY-Y64-G-E
8-branch header CMY-Y68-G-E
Different-diameter joint (optional parts) (Fig. 7-2, 7-3)
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
PAC-SG75RJ-E ø15.88 → ø19.05 ø15.88 ø19.05
PAC-SG71RJ-E ø15.88 *1 → ø22.2 *2 ø15.88 *1 ø22.2 *2
*1 When connecting to MSDD-50AR-E or a branch box, the pipes on-site.
Use the nuts that are included with the 2-branch pipe and branch box.
*2 Brazing
2 branch pipe (Joint) : Optional parts (According to the connection method,
you can choose the favorite one.)
Model name Connection method
MSDD-50AR-E
MSDD-50BR-E
brazing
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
A
Outdoor unit
B
First joint
C
Branch header
D
Branch box
E
CITY MULTI Indoor unit
F
M series Indoor unit
Fig. 7-4
(1) Valve size of branch box for outdoor unit
For liquid ø9.52 mm
For gas ø15.88 mm
(2) Valve size of branch box for indoor unit
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
* ø12.7 when connecting the indoor unit for PEFY-P200 or P250
a, b, c – j
Indoor unit series
Model number
Liquid pipe Gas pipe
kW cal
City Multi – 50 – ø6.35 ø12.7
63 – 140 –
ø9.52
ø15.88
200 – ø19.05
250 – ø22.2
M series – 35 – 32
ø6.35
ø9.52
50 – ø12.7
– 50 ø15.88
60 – 63 – ø9.52 ø15.88
S series – 35 –
ø6.35
ø9.52
50 – 60 – ø12.7
– – ø15.88
71 – – ø9.52 ø15.88
7-2-3. Mixed system (CITY MULTI indoor units and M series indoor units [Via Branch box])