14
Installation manual
Unit: mm
5.7 Example
Liquid side
Gas side
Liquid side
Gas side
Indoor unit
capacity
A(×100W)
A≤45
A≥56
Φ12.7 Φ6.4
Φ15.9 Φ9.5 Φ19.1
Φ12.7
Φ15.9 Φ9.5
Table.5-9
Take (16+12+10) HP that composed by three modules as an
example to clarify the pipe selection.
Take Fig.5-4 as an example. Provided that the equivalent
length of all pipes in this system is larger than 90m.
When branch joint’s
length ŏ10m
When branch joint’s
length˚10m
1)
2)
Parallel connect the outdoor units
The outdoor unit linked by Pipe g1 is 10HP, parallel connects with
outdoor unit. refer to Table.5-8 the connective pipe diameter is
Φ25.4/Φ12.7;
The outdoor unit linked by Pipe g2 is 12HP, parallel connects with
outdoor unit.refer to Table.5-8 the connective pipe diameter is
Φ31.8/Φ15.9;
The outdoor unit linked by Pipe g3 is 16HP, parallel connects with
outdoor unit. refer to Table.5-8 the connective pipe diameter is
Φ31.8/Φ15.9.
The upstream of G1 is the two parallel connected outdoor units,
refer to Table.5-8 select the three parallel connected outdoor unit,
the pipe diameter isΦ38.1/Φ19.1.
Parallel connect the three outdoor units, refer to Table.5-8 should
select BJC-03-CM(i) for outdoor unit connective pipes (L+M).
D
1)
2)
3)
The main pipe L9 with N9, N10 downstream indoor units that total
capacity is 56+56=112, the pipe L9 diameter is Φ15.9/Φ9.5, thus
select BJF-224-CM(i) for the branch joint I.
The main pipe L8 with N8ЊN10 downstream indoor units that total
capacity is 140+56+56=252, the pipe L8 diameter is Φ22.2/Φ9.5,
thus select BJF-330-CM(i) for the branch joint H.
The main pipe L5 with N5ЊN10 downstream indoor units that total
capacity is 140×2+56×2+71×2=534, the pipe L5 diameter is Φ
28.6/Φ15.9, thus select BJF-710-CM(i) for the branch joint E.
The main pipe A with N1ЊN10 downstream indoor units that total
capacity is 140×6+56×2+71×2ω1094, thus select BJF-1344-
CM(i. for the branch joint A.
Main pipe (Refer to Table.5-3, Table.5-5):
Main pipe L1 in the Fig.5-4, which upstream outdoor units total
capacity is 10+12+16ω38, base on table.5-5, the gas/liquid pipe
diameter are Φ38.1/Φ19.1, total capacity of the downstream
indoor unit is 140×6+56×2+71×2ω1094, base on table.5-3, the
gas/liquid pipe diameter are Φ38.1/Φ19.1, take the large one for
your selection, final confirm the main pipe diameter is: gas/liquid
pipe Φ38.1/Φ22.2.
The branch joint at the inside of the unit.
There are a~j branch joints at the inside of the unit, the branch
joint diameter should be select as per Table. 5-9.
Main pipe at the inside the unit (Refer to Table. 5-3)
The main pipe L3 with N1, N2 downstream indoor units that
total capacity is 140×2=280, the pipe L3 diameter is Φ22.2/Φ
9.5, thus select BJF-330-CM(i) for the branch joint C.
The main pipe L4 with N3, N4 downstream indoor units that
total capacity is 140×2=280, the pipe L4 diameter is Φ22.2/Φ
9.5, thus select BJF-330-CM(i) for the branch joint D.
The main pipe L2 with N1~N4 downstream indoor units that
total capacity is 140×4=560, the pipe L2 diameter is Φ28.6/Φ
15.9, thus select BJF-710-CM(i) for the branch joint B.
The main pipe L7 with N6, N7 downstream indoor units that
total capacity is 71×2=142, the pipe L7 diameter is Φ15.9/Φ
9.5, thus select BJF-224-CM(i) for the branch joint G.
The main pipe L6 with N5ЊN7 downstream indoor units that
total capacity is 140+71×2=282, the pipe L6 diameter is Φ22.2/
Φ9.5, thus select BJF-330-CM(i) for the branch joint F.
A
B
1)
2)
3)
4)
5)
6)
7)
8)
9)
C
N1
(140)
N3
(140)
N5
(140)
N6
(71)
N7
(71)
N9
(56)
N8
(140)
N2
(140)
N4
(140)
N10
(56)
$
B
(
F
H
G
I
C
D
L1
L2
L3
L4
L5
L6
L8
L9
L7
ab
c
d
ef
g
i
j
h
W3
(10)
W2
(12)
W1
(16)
0
/
g1 g2 g3
G1
Fig.5-4
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