123
OCH634C
Liquid Line (mm)
Gas Line (mm)
ø9.52
ø
19.05
Method of Combined Branching of
Lines and Headers
Connection Examples
(Connecting to 5 Indoor Units)
Permissible
Length
Total Piping Length
A+B+C+a+b+c+d+e is 150 meters or less
Farthest Piping Length (L) A+B+b is 80 meters or less
Farthest Piping Length
After First Branch
(
R
) B+b is 30 meters or less
Permissible
High/Low
Difference
High/Low Difference in
Indoor/Outdoor Section
(H) 50 meters or less (If the outdoor unit is lower, 40 meters or less)
High/Low Difference in
Indoor/Indoor Section
(h) 15 meters or less
■ Selecting the Refrigerant Branch Kit
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
Branch header (4 branches)
Branch header (8 branches)
CMY-Y62-G-E
CMY-Y64-G-E
CMY-Y68-G-E
■ Select Each Section of Refrigerant
Piping
(1) Section From Outdoor
Unit to First Branch (A)
Each
Section of
Piping
(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.
(1) Refrigerant Piping Diameter In Section
From Outdoor Unit to First Branch
(Out- door Unit Piping Diameter)
Model
Piping Diameter (mm)
PUMY-P200
Liquid Line
ø9.52
Gas Line
ø19.05
(3) Refrigerant Piping Diameter In Section
From Branch to Branch
(2) Refrigerant Piping Diameter In Section
From Branch to Indoor Unit
(Indoor Unit Piping Diameter)
Model number
Piping Diameter (mm)
50 or lower
Liquid Line
ø6.35
Gas Line
ø12.7
63 to 140
Liquid Line
ø9.52
Gas Line
ø15.88
200
Liquid Line
ø9.52
Gas Line
ø19.05
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.
■ Additional refrigerant charge
Refer to the same section in the previous page.
Outdoor unit
First branching (branching
joint)
Branching joint
Indoor unit
Branching header
Blind caps
A
B
C
D
E
F
B
A
E
F
C
D
D
D
D
D
A
C
b
B
3
H
h
4
L
R
5
1
2
c
d
e
a
Note: Pipe re-branching after the header branching
is not possible.