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Mitsubishi Electric PURY-P72 Service Handbook page 62

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[ II Restrictions ]
(2) Size of the pipe that fits the main BC controller ports
P72 - P240 models
Connection: Brazed connection
To outdoor unit
*1
Reducer
(Standard supplied parts)
Indoor
P18 model or below P24 - P54 models P72 or P96 models
The ports of the BC controller accommodates the pipes on P24 - P54 models of indoor units. To connect other types of indoor
units, follow the procedure below.
1) To connect P06 - P18 models of indoor units use the reducer that is supplied with the BC controller.
2) To connect the units between the P72 and P96 models of indoor units (or when the total capacity of indoor units is P55
or above), use a junction pipe kit and merge the two nozzles.
3) To connect multiple indoor units to a port (or to a junction pipe)
Maximum total capacity of connected indoor units: P54 or below (in a system with a junction pipe: P96 or below)
Maximum number of connectable indoor units: 3 units
Branch joint: Use CMY-Y102S-G2 (optional accessory).
Refrigerant pipe selection (size of the pipes in sections A and B in the figure above): Select the proper based on the total
capacity of the downstream indoor units, using the table below as a reference.
Total capacity of indoor units
P54 or below
P55 - P72
P73 - P96
Operation
Outdoor unit
PURY-P72THMU-A
side
PURY-P72YHMU-A
PURY-P96THMU-A
PURY-P96YHMU-A
PURY-P120THMU-A
PURY-P120YHMU-A
PURY-P144TSHMU-A
PURY-P144YSHMU-A
PURY-P168TSHMU-A
PURY-P168YSHMU-A
PURY-P192TSHMU-A
PURY-P192YSHMU-A
PURY-P216TSHMU-A
PURY-P216YSHMU-A
PURY-P240TSHMU-A
PURY-P240YSHMU-A
Indoor unit side
HWE0803A
BC controller (main)
*2
Junction pipe kit
(Model name:CMY-R160-J)
(Optional accessory)
Indoor
Indoor
Liquid pipe
ø9.52 [3/8"]
ø9.52 [3/8"]
ø9.52 [3/8"]
ø9.52 [3/8"] (Flare connection)
- 53 -
Branch joint (Model name:CMY-Y102S-G2)
A
Indoor
3*
Maximum of 3 units per port
Total capacity of P54 or below
(All units connected to the same port
must be in the same operating mode.)
Pipe sections
High pressure side (Liquid)
ø15.88 [5/8"]
(Brazed connection)
ø19.05 [3/4"]
(Brazed connection)
ø22.2 [7/8"]
(Brazed connection)
ø28.58 [1-1/8"]
(Brazed connection)
(Optional accessory)
B
Indoor
Indoor
Unit : mm [inch]
Gas pipe
ø15.88 [5/8"]
ø19.05 [3/4"]
ø22.2 [7/8"]
Unit : mm [inch]
Low-pressure side (Gas)
ø19.05 [3/4"]
(Brazed connection)
ø22.2 [7/8"]
(Brazed connection)
ø28.58 [1-1/8"]
(Brazed connection)
ø15.88 [5/8"] (Flare connection)
GB
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