7
Pipe diameter of the connector in the outdoor unit’s body
Table 4-7
Piping side
MODEL (kW)
Pipe diameter of outdoor unit’s
connector(mm)
Gas Side
Liquid Side
8
Φ15.9
Φ9.5
10
Φ15.9
Φ9.5
12
Φ15.9
Φ9.5
14
Φ15.9
Φ9.5
16
Φ19.1
Φ9.5
Table 4-8
Outdoor Unit
(kW)
Capacity
of ODU
(horsepower)
Max. Number
of IDUs
Sum Capacity
of IDUs
(horsepower)
8
2.5
6
50%~150%
10
3
7
50%~150%
12
4
10
50%~150%
14
5
12
50%~150%
16
6
13
50%~150%
CAUTION
The total capacity of the IDUs must not exceed 130% of the
load of the ODU.
When the capacity of IDUs is greater than 100% of the load, the
output of the IDUs will be de-rated.
Table 4-9
Capacity
ranking
Capacity
(horsepower)
Capacity
ranking
Capacity
(horsepower)
18
0.6
80
2.5
22
0.8
10.5
3
28
1
120
4
36
1.25
140
5
45
1.7
160
6
56
2
When the outdoor unit connects one indoor unit
Table 4-10
MODEL
(kW)
The max height drop(m)
The length
of refrigerant
pipe(m)
The number
of bends
When
outdoor unit
is top
When
outdoor unit
is bottom
8
10
10
8
less than 10
10
25
20
8
12
25
20
8
14
30
20
8
16
30
20
8
4.6 Illustration
Outdoor Unit(Take Model 160 for example)
Fig.4-6
N
1
(28)
N
3
(28)
N
5
(28)
N
6
(22)
N
2
(28)
N
4
(28)
A
B
D
E
C
a
b
c
e
f
d
L
1
L
2
L
5
L
3
L
4
The First Line Branch Pipe
Intdoor Units
Caution: Suppose in the displayed piping system, the total equi-
valent piping length of air side + liquid side is longer than 90m.
z
Indoor unit branch pipe
Inner branch pipes are a~f, the size selection please refers to
Table4-6. Note: The max. length of the branch pipe should not
longer than 15m.
z
The main pipes of indoor unit and the indoor unit branch pipe
components
The downstream inner units of the main pipe L2 are N1, N2, and
its total capacity is 28×2=56, the size of pipe L2 isΦ15.9/Φ9.5, and
the branch pipe B should be KCMI 112.
The downstream inner units of the main pipe L4 are N3, N4, and
its total capacity is 28×2=56, the size of pipe L4 isΦ15.9/Φ9.5, and
the branch pipe D should be KCMI 112.
The downstream inner units of the main pipe L5 are N5, N6, and its
total capacity is 28+22=50, the size of pipe L5 isΦ15.9/Φ9.5, and
the branch pipe E should be KCMI 112.
The indoor unit below to the main pipe L3 are N3~N6, and its to-tal
capacity is 28×3+22=106, the size of pipe L3 isΦ15.9/Φ9.5, and he
branch pipe C should be KCMI 112.
The indoor unit below to the main pipe A are N1~N6, and its to-tal
capacity is 28×5+22=162, and the branch pipe should be KCMI
112, and because the total piping length of air side is ≥90m,
check Table.4-4, and the first branch pipe should apply KCMI 212,
and according to the principle of maximum value, it should apply
KCMI 212.
z
Main pipe (Please refer to Fig.4-5 and Fig.4-7)
In Fig.4-6, the main pipe L1, the outdoor unit capacity is 16kW, and
check the Fig.4-7 to get the size of gas pipe/liquid pipe is Φ19.1/
Φ9.5, and aslo the total equivalent length of liquid side and gas
side pipes is >90m,then check the Fig.4-4 to get the size of gas
pipe/liquid pipe is Φ22.2/Φ9.5, and according to the maximum
value principle, it should apply the Φ22.2/Φ9.5.
Summary of Contents for KMF-120 DVN4
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