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4.4 Determination of main pipe (L2-L5) diameter
Capacity of Downstream
Indoor Unit (kW)
W＜6.5
6.5≤W＜18
18≤W＜24
W≥24
4.5 Allowable length and height difference of the refrigerant pipe
1. Connecting mode I
First distributor
2. Connecting mode II
First distributor
4. Installation of Connecting Pipe
Table 4-5 Diameter of Pipe
Dimension of main pipe of indoor unit
Liquid pipe
Φ9.52
Φ9.52
Φ9.52
Φ9.52
Equivalent length to the nearest distributor
L1
A
Equivalent length to the farthest pipe of the indoor unit
L2
Equivalent length to the farthest pipe of the first distributor
L3
C
B
b
Fig. 4-5 Connecting Mode I
Equivalent length to the nearest distributor
Equivalent length to the farthest pipe of the indoor unit
L2
L1
A
Equivalent length to the farthest pipe of the first distributor
L3
Fig. 4-6 Connecting Mode II
Length of Downstream Equivalent Pipe
Liquid pipe
Φ12.7
Φ15.88
Φ19.05
Φ22.2
a
L5
L4
E
D
d
c
a
B
b
c
L4
D
C
d
L5
E
e
N5
08
Applicable to distributor
SP-FQG-N01D
SP-FQG-N01D
SP-FQG-N01D
SP-FQG-N02D
f
e
N1
N2
N3
N4
f
N6
V.1
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