134
OCH668B
■
Additional refrigerant charge
*Branch box should be placed within the level between the outdoor unit and indoor units.
Mixed Method
Connection Examples
(Connecting to 1 Branch box)
A+B+C+D+E+a+b+c+d+e+f+g+h+i+j
≦
120 m
A+E+a or A+B+C+e
≦
70 m
A+B+C+D+j
≦
80 m
A+B+C+D
≦
55 m
B+C+D or B+C+e
≦
50 m
j
≦
25 m
f+g+h+i+j
≦
95 m
H
≦
50 m (In case of outdoor unit is set higher than indoor unit)
H
≦
30 m (In case of outdoor unit is set lower than indoor unit)
h1
≦
15 m
h3
≦
12 m
≦
12 m
Total piping length
Farthest piping length (L1)
Farthest piping length. Via Branch box (L2)
Piping length between outdoor unit and branch box
Farthest piping length from the first joint
Farthest piping length after branch box
Total piping length between branch boxes and indoor units
In indoor/outdoor section (H)*
In branch box/indoor unit section (h1)
In each indoor unit (h3)
Permissible
length
(One-way)
Permissible
height
difference
(One-way)
Number of bends
E
H
L1
h1
L2
h3
h1
D
A
B
A
B
C
D
aa
b
C
C
E
E
E
E
E
F
F
F
F
F
f
g
i
h
j
f
g
i
h
j
d
e
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.)
■
Select Each Section of Refrigerant Piping
■
Selecting the Refrigerant Branch Kit
Select the size from the table to the right.
(1) Refrigerant Piping Diameter In Section From Outdoor Unit to Branch box or Branch
header (Out-door Unit Piping Diameter)
(1) Section From Outdoor Unit
to Branch box or Branch
header (A to E)
(2) Sections From Branch
box or Branch header to
Indoor Unit (a to j)
(2) Refrigerant Piping Diameter In Section From Branch box or Branch header to
Indoor Unit (Indoor Unit Piping Diameter)
Each
Section of
Piping
Branch header (4 branches)
CMY-Y64-G-E
Branch header (8 branches)
CMY-Y68-G-E
A
Outdoor Unit
B
First joint
C
Branch header (CMY)
D
Branch box
E
CityMulti Indoor unit
F
M/S/P series Indoor unit
15 to 50
50
71
35,50
60 to 100
60
63 to 140
22 to 42
{
6.35
{
6.35
{
9.52
{
9.52
{
6.35
kW type
A Liquid pipe
B Gas pipe
Indoor unit series
CityMulti
M series or
S series
P series
{
12.7
{
15.88
{
15.88
{
6.35
{
12.7
{
9.52
{
15.88
{
15.88
{
9.52
{
12.7
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.
Liquid Line
Gas Line
Piping Diameter (mm)
Model
{
9.52
{
15.88
PUMY-SP112
PUMY-SP125
PUMY-SP140
{
6.35
{
9.52
R
[
30 m
R
>
30 m
*
If the pipe size of indoor
unit is different, use a
different-diameter joint.
