Refrigerant Piping Selection - Mitsubishi Electric PEFY-P-VML-E Data Book

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2. Refrigerant piping selection

1 PUHY, PUY
Hex unit
E
(1) Outdoor unit - 1st branch (Pipe A)
Outdoor unit model
P200
P250
P300
P350
P400
P450
P500
P550
P600
P650
P700
P750
P800
✻1 ø 12.7 for over 90m
✻2 ø 12.7 for over 40m
(3) Branch - Branch (Pipe B,C,D)
Total capacity
of indoor units
~ 140
141 ~ 200
201 ~ 300
301 ~ 400
401 ~ 650
651 ~ 800
801 ~
❇ Please choose the pipe thickness according to your country
standard referring to above chart.
(5) Comp unit - Hex unit (Pipe E)
Outdoor unit model
P700
P750
P800
Comp unit
Note : • No further branching is possible after the header branch.
A
C
First branch
B
(branch joint)
d
Branch joint
Indoor unit
Liquid pipe
Gas pipe
ø 9.52
ø 19.05
✻1
ø 9.52
ø 22.2
✻2
ø 9.52
ø 22.2
ø 12.7
ø 28.58
ø 12.7
ø 28.58
ø 15.88
ø 28.58
ø 15.88
ø 28.58
ø 15.88
ø 28.58
ø 15.88
ø 28.58
ø 15.88
ø 28.58
ø 34.93
ø 19.05
ø 19.05
ø 34.93
ø 34.93
ø 19.05
Liquid pipe
Gas pipe
ø 9.52
ø 15.88
ø 9.52
ø 19.05
ø 9.52
ø 22.2
ø 12.7
ø 28.58
ø 28.58
ø 15.88
ø 19.05
ø 34.93
ø 19.05
ø 41.28
Liquid pipe
Gas pipe
ø12.7
ø28.58
ø12.7
ø28.58
ø12.7
ø28.58
• Always select CMY-Y202-G for the first branch of P450~P650.
• Always select CMY-Y302-G for the first branch of P700, 750, 800.
Branch header
Cap
b
a
c
Indoor unit
Indoor unit
Indoor unit
D
e
Indoor unit
(2) Branch joint / Header
Type of
Total capacity of
branch pipe
The 1st branch of
Joint
P450~P650
The 1st branch of
P700, 750, 800
For 4 branches (~200)
Header
For 8 branches (~400)
For 10 branches (~650)
(4) Branch - Indoor unit (Pipe a, b, c, d, e, f)
Indoor unit model
P20, P25, P32, P40, P50
P63, P71, P80
P100, P125, P140
P200
P250
• Indoor unit capacities
The capacity of an indoor unit is the same as the number
used for its type identification.
Examples:
PEFY-P63VM © Capacity = 63
2- 6
f
Indoor unit
Branch pipe model
indoor units
~ 140
CMY-Y102S-G
141 ~ 400
CMY-Y102L-G
401 ~ 650
CMY-Y202-G
651 or above
CMY-Y302-G
CMY-Y104-G
CMY-Y108-G
CMY-Y1010-G
Liquid pipe
Gas pipe
ø 6.35
ø 12.7
ø9.52
ø 15.88
ø 9.52
ø 19.05
ø 22.2
ø 9.52

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