Mitsubishi Electric PUMY-P200YKM2 Technical & Service Manual page 123

Method of Combined Branching of
Lines and Headers
Connection Examples
(Connecting to 5 Indoor Units)
Permissible Total Piping Length
Length
Farthest Piping Length
Farthest Piping Length
After First Branch
High/Low Difference in
Permissible
High/Low
Indoor/Outdoor Section
Difference
High/Low Difference in
Indoor/Indoor Section
■ Selecting the Refrigerant Branch Kit
■ Select Each Section of Refrigerant
Piping
(1) Section From Outdoor
Unit to First Branch (A)
(2) Sections From Branch to
Indoor Unit (a,b,c,d,e)
(3) Section From Branch to
Branch (B,C)
Select the size from the table to the
right.
■ Additional refrigerant charge
OCH675D
A
A
B
A+B+C+a+b+c+d+e is 150 meters or less
(L) A+B+b is 80 meters or less
B+b is 30 meters or less
(R)
50 meters or less (If the outdoor unit is lower, 40 meters or less)
(H)
15 meters or less
(h)
Please select branching kit, which is sold separately, from the table below.
(The kit comprises sets for use with liquid pipes and for use with gas pipes.)
Branch Joint
CMY-Y62-G-E
(1) Refrigerant Piping Diameter In Section
From Outdoor Unit to First Branch (Out-
door Unit Piping Diameter)
Each
Section of
L [60m
Piping
L > 60m
(3) Refrigerant Piping Diameter In Section
From Branch to Branch
Total capacity
of indoor units
L [ 60m
Up to16.0kW
L > 60m
L [ 60m
16.1 to 29.1kW
L > 60m
Note: When connecting the CONNECTION KIT (PAC-LV11M-J) and an M-series indoor unit,
refer to the installation manual for the CONNECTION KIT when selecting the pipe size and
piping length.
Refer to the same section in the previous page.
Note: Pipe re-branching after the header branching
is not possible.
C E
F
c d e
3 4 5
B
D D D
L
R
b
a 2
C
D D
1
Branch header (4 branches)
CMY-Y64-G-E
Piping Diameter (mm)
Liquid pipe Gas pipe
ø9.52
ø19.05
ø12.7
Liquid pipe Gas pipe
(mm) (mm)
ø9.52
ø15.88
ø12.7
ø9.52
ø19.05
ø12.7
123
A Outdoor unit
B First branching (branching joint)
C Branching joint
D Indoor unit
E Branching header
F Blind caps
Branch header (8 branches)
CMY-Y68-G-E
(2) Refrigerant Piping Diameter In Section
From Branch to Indoor Unit (Indoor Unit
Piping Diameter)
Model number Piping Diameter (mm)
Liquid Line
50 or lower
Gas Line
Liquid Line
63 to 140
Gas Line
Liquid Line
200
Gas Line
ø6.35
ø12.7
ø9.52
ø15.88
ø9.52
ø19.05