Mitsubishi Electric CITY MULTI CMB-P-NU-J1 Manuel D'installation page 12

1. Size of BC controller's end connection piping
[Fig. 5.2.2]
CMB-P104NU-J1
CMB-P106NU-J1
(MAIN)BC
CMB-P108NU-J1
CONTROLLER
CMB-P1012NU-J1
CMB-P1016NU-J1
SUB BC
No available
CONTROLLER
(E)P72 - 120
(E)P121 - 336
(E)P337 - 432
BC CONTROLLER / MAIN BC CONTROLLER
Unit model High pressure side*1 Low pressure side*1
PURY-(E)P72 ø15.88 (Brazing)
PURY-(E)P96
ø19.05 (Brazing)
PURY-(E)P120
PURY-(E)P144
PURY-(E)P168 ø22.2 (Brazing)
PURY-(E)P192
PURY-(E)P216
ø22.2(ø28.58)*2
(Brazing)
PURY-(E)P240
PURY-(E)P264
PURY-(E)P288
ø28.58 (Brazing)
PURY-(E)P312
PURY-(E)P336
*1. Use separately sold parts if the pipe diameter is not appropriate.
*2. If the length of high-pressure pipe A exceeds 65 m (213 ft), use the
ø28.58 (ø1-1/8) pipes for all pipes after 65 m (213 ft).
A B
C
F
*2
D D
E 05-54 72-96
*1
A To outdoor unit (MAIN BC CONTROLLER)
B End connection (brazing)
C BC controller (MAIN BC CONTROLLER / SUB BC CONTROLLER)
D Indoor unit
E Less than 18
F Combined piping kit (Model name: CMY-R160-J1)
G Twinning pipe (Model name: CMY-Y102S-G2)
H Up to three units for 1 branch hole; total capacity: below 54 (but same in cooling/heat-
ing mode)
The size of BC controller's branch piping is for 24 to 54 type indoor units.
Therefore, if you want to connect indoor units other than the above, connect pip-
ing following the procedures below.
*1. For connecting 06 to 18 type indoor units
Refer to Fig. 5.2.1.
Note:
Use only the flare nuts supplied with the BC controller.
*2. To connect a unit with a capacity of higher than 54.
After combining two branches using an optionally available piping kit
(CMY-R160-J1), connect indoor units.
12
Available connection ( ✔ mark: available)
CMB-P108NU-JA1
CMB-P1012NU-JA1
CMB-P1016NU-JA1
No available
✔ ✔
✔
ø19.05 (Brazing)
ø22.2 (Brazing)
ø28.58 (Brazing)
ø34.93 (Brazing)
ø41.28 (Brazing)
G
D D D D
H
*3
CMB-P1016NU-KA1 CMB-P108NU-JA1
CMB-P1012NU-JA1
CMB-P1016NU-JA1
CMB-P104NU-KB1
No available CMB-P108NU-KB1
(Qty. 1 to 11)
✔ ✔
✔ ✔
✔
SUB BC CONTROLLER
Total capacity High pressure (gas)
of indoor units side *2
- P72 ø15.88 (Brazing)
P73 - P108
ø19.05 (Brazing)
P109 - P126
P127 - P144
ø22.2 (Brazing)
P145 - P216
P217 - P234
P235 - P288 ø28.58 (Brazing)
P289 - P360
P361 - ø34.93 (Brazing)
*1. The maximum total capacity of indoor units that can be connected to each Sub BC
controller is P126.
*2. Use separately sold parts if the pipe diameter is not appropriate.
*3. Connection of plural indoor units with one connection (or joint pipe)
• Total capacity of connectable indoor units: Less than 54 (Less than 96 with
joint pipe)
• Number of connectable indoor units: Maximum 3 Sets
• Twinning pipe: Use the twinning pipe for CITY MULTI Y Series (CMY-
Y102S-G2)
• Selection of refrigerant piping
Select the size according to the total capacity of indoor units to be installed
downstream.
Total capacity of indoor units
Below 54
55 to 72
73 to 96
2. Connecting to out side pipes
• For PURY-P72, 96, 120, 144, 168, 192, 216, 240, 264, 288, 312, 336
[Fig. 5.2.3]
High pressure/low pressure piping diagram
A
B
C
Note:
Be sure to use non-oxidative brazing.
CMB-P1016NU-KA1
CMB-P104NU-KB1
CMB-P108NU-KB1
(Qty. 1 to 11)
✔
✔
✔
Low pressure (gas)
Liquid side *2
side *2
ø19.05 (Brazing)
ø9.52 (Brazing)
ø22.2 (Brazing)
ø12.7 (Brazing)
ø28.58 (Brazing)
ø15.88 (Brazing)
ø34.93 (Brazing)
ø19.05 (Brazing)
ø41.28 (Brazing)
(Unit: mm [in])
Liquid line Gas line
ø15.88 [5/8]
ø9.52 [3/8] ø19.05 [3/4]
ø22.2 [7/8]
(Unit: mm [in])
A Connection pipe of outdoor unit
D
(Low pressure)
B Connection pipe of outdoor unit
(High pressure)
E
C Drain piping (NPT 3/4 in)
D Connection pipe of indoor unit (Liquid)
E Connection pipe of indoor unit (Gas)