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4. Design of refrigerant tube
4-1 Refrigerant tube length and height difference
!
NOTICE
1. All manifolds must be the special manifolds provided by the manufacturer, or some serious failure may occur to the system!
2.
Indoor units shall be uniformly installed at both sides of the "U" shape manifold.
Total tube length
(Total extension)
Longest tube
length (L)
Furthest length of tube
from 1st manifold
Height difference between
indoor andoutdoor units (H)
Height difference between indoor
and indoor units (H)
Remark: the equivalent tube length of the manifold is 0.5m.
Outdoor unit(one or more connected)
W2
(22HP)
g2
!
NOTICE
1.The converted length of the manifold is equivalent to 0.5m.
2.The indoor units should be installed equally on both sides of the U-shaped manifold.
3.When the outdoor unit is below and H is higher than 40m, the liquid pipe of the main pipeline needs to be increased by one size.
4.The allowable length of the first manifold assembly connected to the indoor unit should be equal to or less than 40m.But when all
the following conditions are met, the allowable length can be extended to 90m.
Conditions
1.
The diameter of all the main branch tube between t
manifold assembly
and the last
increased. (Please make the tube on site)
If the
diameter of
main branch is same as the main tube, then
no need to increase it.
2.When calculating the total extension length, The actual length
of
the above main branch tube
(Except for main tube and branch tube without increasing the
pipe diameter. )
3.The length between indoor unit and nearest
assembly is
is less than or equal to 20m.
4.The difference between [the length between outdoor and
furthest indoor] and [
the length between outdoor and nearest
indoor] is less than or equal to
5. All manifolds must use our special tube. Failure to operate in accordance with this requirement may lead to serious system failure!
Tab.4.1 Refrigerant tube length and height difference
Allowance
1000m(Please refer to following
condition 2 of notice 4
200m
Actual
240m(
Please refer to
Equivalent
following notice 1
90m(
Please refer to
following notice 4
Outdoor top
100m
Outdoor bottom
110m
40m
W1
(24HP)
L2
g1
L
A
L1
L7
G
From the 1st branch pipe farthest piping equivalent length L≤90m
The indoor unit farthest piping equivalent length L≤240m
Fig.4.1 Refrigerant tube length and height difference
he first
manifold assembly
needs to be
must be doubled.
manifold
40m。
L1+(L2+L3+L4+L5+L6+L7+L8+L9+L10+L11
L1+(L2+L3+L4+L5+L6+L7+L8+L9+L10+L11
+L12)x2+a+b+c+d+e+f+g+h+i+j+k+l+m
+L12)x2+a+b+c+d+e+f+g+h+i+j+k+l+m
L1+L7+L8+L9+L10+ (For the pipe diameter
requirements, please refer to the diameter
determinationof the outdoor pipe connection pipe.)
)
L7+L8+L9+L10+i
)
Please refer to following notice 3
a
L4
C
L3
B
L6
E
L5
d
N7
(140)
h
L8
H
I
L9
L11
L12
M
K
l
N11
(140)
N9
L10 ≤
L7+L8+L9+
+i 90m
L2,L3,L4,L5,L6,L7,L8,L9,
L10,L11,L12
The diameter of above main
branch tube need to be
increased
L1+(L2+L3+L4+L5+L6+L7+L8+L9+
L10+L11+L12)x2+a+b+c+d+e+f+g
+h+i+j+k+l+m≤1000m
a,b,c...m≤20m
(For tube size, please refer to
Table 4.4)
The furthest indoor N9
The nearest indoor N1
(L1+L7+L8+L9+L10+i)-
(L1+L2+L3+a)≤40m
8
配管部分（按例图4-1）
Tube part (Fig.4.1)
i
N2
(140)
N1
c
b
(140)
D
f
F
e
N5
N4
(140)
(140)
N8
N9
(140)
(71)
i
N10
J
L10
j
(28)
m
N13
N12
(56)
(56)
Increase tube size as shown below
φ9.5→ 12.7
φ
φ12.7→φ15.9 φ15.9→φ19.1
φ19.1→φ22.2 φ22.2→φ25.4φ25.4→φ28.6
φ31.8→φ38.1 φ38.1→φ41.2
φ41.2→φ44.5 φ44.5→φ54.0
Figure 4-1
N3
(71)
N6
(28)
Legend
V.1
V.1
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