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Term
Symbol
Total
Example 1
a+b+c
Piping
Example 2 d+e+f+g+h
Length
Example 1
a+c
Maximum
Piping
Example 2
f+h
Length
Piping
-
Length
Equivalent
-
Length
< Example 1 > Line Branch (Including Main Pipe Branch)
Outdoor
Unit A
a
First Branch
Indoor
Multi-Kit
Unit
A
< Example 2 > Using Piping Connection Kit
Outdoor
Outdoor
Unit B
Unit A
d
e
Piping Connection Kit
First Branch
Multi-Kit
NOTE:
The main pipe branch is the piping branch method where
Multi-Kits are connected to the pipes both a er the first branch.
a
Main Pipe
d
Branch
5.9.1 Connection between Outdoor Units and
Connection Kit
Multi-Kit (Optional Parts)
< Line Branch >
(Standard Type)
Multi-Kit after First Branch
B
Outdoor
Model
Unit HP
8, 10
MW-NP282X3
12 - 16
MW-NP452X3
18, 20
MW-NP562X3
22, 24
MW-NP692X3
26 - 54
MW-NP902X3
56 - 112 MW-NP2682X3
A16381E84N-rev.1
Description
Total length of all liquid pipes
(sum)
Actual length of the liquid pipe
from outdoor unit stop valve
or piping connecting kit to the
terminal unit.
Actual length of liquid pipe out of
consideration of local resistance,
such as bent or elbow.
This length is obtained by
converting local resistance, such
as bent or elbow, to straight pipe
length.
c
b
Terminal
Indoor Unit
B
f
h
g
Indoor
Terminal
Unit
Indoor Unit
A
B
b
c
Indoor Unit
e
f
NOTE:
•
The CH-Box (Multiple Branch Type)
or Header Branch can also be used
instead of the Multi-Kit as first
branch.
Multi-Kit after First Branch (3 Pipes Portion)
C
Total
Indoor
Model
Unit HP
<6
MW-NP142X3
6 - 11.99
MW-NP282X3
12 - 17.99
MW-NP452X3
18 - 21.99
MW-NP562X3
22 - 25.99
MW-NP692X3
26 - 55.99
MW-NP902X3
≥
56
MW-NP2682X3
D
Multi-Kit after First Branch (2 Pipes Portion)
Total
Indoor
Model
Unit HP
< 12
MW-NP282A3
12 - 17.99
MW-NP452A3
18 - 25.99
MW-NP692A3
≥
26
MW-NP902A3
CH Unit, CH-Box
E
< Single Unit for 1 Branch >
IDU Side
Model
Branch
Number
CH-6.0N2
1
CH-AP160SSX
1
CH-10.0N2
1
CH-AP280SSX
1
CH-AP04MSSX
4
CH-AP08MSSX
8
CH-AP12MSSX
12
CH-AP16MSSX
16
*1 Upto two 8.0, 10.0HP type indoor units can be connected to the CH-
Box within the "Indoor Unit Maximum Connection Capacity" shown in
above table. Make sure to increase the pipe connection size by using the
appropriate accessory pipe.
< Multiple Units for 1 Branch >
IDU Side
Model
Branch
Number
*1
CH-6.0N2
1
CH-AP160SSX
1
CH-10.0N2
*1
1
CH-AP280SSX
1
CH-AP04MSSX
4
CH-AP08MSSX
8
CH-AP12MSSX
12
CH-AP16MSSX
16
*1 If the number of connected indoor unit exceeds four, the upstream or
downstream piping of CH-Box (Piping Size
size respectively. Refer to page 74
CH-Box and Multi-kit" for details. Only single unit per branch is allowed to
be connected.
5. Refrigerant Piping Work
IDU
IDU Maximum
Maximum
Connection
Connection
Capacity
Capacity
for 1 Branch
(HP)
(HP)
≤ 6.0
≤ 6.0
≤ 6.0
≤ 6.0
≤ 10.0
≤ 10.0
≤ 10.0
≤ 10.0
≤ 16.0
≤ 6.0
*1
≤ 30.0
≤ 6.0
*1
≤ 30.0
≤ 6.0
*1
≤ 30.0
≤ 6.0
*1
Maximum
IDU
Number of
Maximum
Connection
Connected
Connection
IDU for
Capacity
for 1 Branch (HP)
1 Branch
(HP)
7
≤ 6.0
7
≤ 6.0
8
≤ 10.0
8
≤ 10.0
6
≤ 16.0
6
≤ 30.0
6
≤ 30.0
6
≤ 30.0
) need to change the
5 6
7
"Diameter of Pipe between CH Unit,
5
IDU Max.
Capacity
≤ 6.0
≤ 6.0
≤ 10.0
≤ 10.0
≤ 6.0
≤ 6.0
≤ 6.0
≤ 6.0
72
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