Mitsubishi Electric PURY-P72 Service Handbook page 64

r
II Restrictions
J
(3) Size of the pipe that fits the sub
Be
controller ports
. . Branch joint (Model name:CMY-Y102S-G2)
Connection: Brazed con~ectlon
I\(OPlional accessory)
Junction pipe kit
'-T-,---.------,---,--' (Model name:
CMY.R160-J)
(Optional accessory)
,---"------,A
r
B .-----L--J
Indoor Indoor Indoor
~
Indoor Indoor
P18 model or below P24 - P54 models P72 or P96 models
L
I
3'
Maximum of
3
units per port ----.J
Total capacity of P54 or below
(All units connected to the same port
must be in the
same operating mode.)
'1
Reducer
(Standard supplied parts)
To Main BC controller
<
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.
Note
I
1) To connect POB - 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.
Unit: mm [inch]
Total capacity of indoor units
Liquid pipe Gas pipe
P54 or below
09.52 [3/8"J
015.88 [5/8"J
P55- P72 09.52 [3/8"J 019.05 [314"J
P73 - P96 09.52 [3/8"J 022.2 [7/8"J
Unit: mm [inchJ
Operation Pipe sections
Total capacity of the in-
door units that are con- High-pressure side Low-pressure side
Liquid pipe side
nected to the BC (liquid) (gas)
controller
On the BC controller
P72 model or below
015.88 [5/8"J 019.05 [3/4"J
side
(Brazed connection) (Brazed connection)
09.52 [3IB"J
P73 - P108
022.2 [7/8"]
(Brazed connection)
019.05 [3/4"]
(Brazed connection)
P109 - P126
(Brazed connection)
012.7 [1/2"]
P127 - P144 02B.58 [1-1/8"]
(Brazed connection)
022.2 [7/8"J
(Brazed connection)
015.88 [5/8")
P145 - P168
(Brazed connection)
(Brazed connection)
HWE.OB03A
- 54- GB