Mitsubishi Electric PURY-P200 Service Handbook page 45

(2) BC controller (main) end connection piping size
To outdoor unit
Main BC controller
✻1
Reducer
(supplied)
Indoor unit Indoor unit
P50 type P63-P140
or below types
The size of the branch end connection on the BC controller is designed to fit P63-P140 type indoor units.
To connect other types of indoor units, perform the following procedures.
✻1: To connect P20-P50 type indoor units, use the reducer that is supplied with the BC controller
✻2: To connect P200 or P250 type indoor units (or when the total capacity of the indoor units exceeds P141),
use an optional junction pipe kit (Type: CMY-R160-J) and merge the 2 joints.
✻3: To connect multiple indoor units to a branch joint (or to a junction pipe)
• Total capacity of connectable indoor units : P140 or below (P250 or below when a junction pipe is used)
• The number of connectable indoor units
• Selection of refrigerant piping (pipe size of the A and B in the figure above)
: Use the total capacity of the downstream indoor units to determine the proper pipe size, using the
table below as a reference.
Total capacity of the indoor units
P140 or below
P141~P200
P201~P250
(❈) With reducer
Item
PURY-P200YGM-A
PURY-P250YGM-A
PURY-P300YGM-A
PURY-P350YGM-A
PURY-P400YGM-A
Outdoor
unit side
PURY-P450YGM-A
PURY-P500YGM-A
PURY-P550YGM-A
PURY-P600YGM-A
PURY-P650YGM-A
Indoor unit side
End connection:
brazed connection
✻2
Junction pipe kit
(Type: CMY-R160-J)
(option)
A
Indoor unit Indoor unit
P200-P250
types
Liquid pipe
ø 9.52
9.52
ø
ø 9.52
High-pressure side
Piping sections
(liquid side)
ø 15.88
(Brazed)
ø 19.05
(Brazed)
ø 22.2
(Brazed)
28.58
ø
(Brazed)
9.52
ø
(Flare)
- 42 -
Branch pipe (Type: CMY-Y102S-G)
(For CITY MULTI Y series, option)
B
Indoor unit
Maximum of 3 units per branch joint.
Total capacity of P140 or less
(All units connected to the same
branch joint must be in the same mode.)
: 3 max.
Gas pipe
ø 15.88
19.05
ø
ø 22.2 (❈)
Low-pressure side
(gas side)
ø 19.05
(Brazed)
ø 22.2
(Brazed)
ø 28.58
(Brazed)
15.88
ø
(Flare)
Indoor unit