35
3 Diameter of the piping from the 1st branch pipe and indoor unit.( 3 )
Downstream Indoor
Unit Capacity (kW)
Gas Pipe
Liquid Pipe
Q≤15.9
15.88
9.52
16≤Q<25
19.05
9.52
25≤Q<33.5
22.2
9.52
33.5≤Q<45
25.4
12.7
45≤Q<50
28.58
12.7
50≤Q<72.9
28.58
15.88
72.9≤Q<100.8
31.75
19.05
100.8≤Q<156.8
38.1
19.05
156.8≤Q<190.4
44.45
19.05
190.4≤Q<207.2
44.45
22.2
207.2≤Q<252
50.8
22.2
252≤Q<274.4
50.8
25.4
274.4≤Q<349.5
50.8
28.58
4 The piping diameter between the last branch pipe and the indoor unit ( 4 )
Indoor Unit Type
Indoor Unit Model
Gas Pipe
Liquid Pipe
Compact Ducted Indoor Unit
Medium ESP Ducted Indoor Unit
High ESP Ducted Indoor Unit
Floor Concealed Indoor Unit
18~45
12.7
6.35
（
*5
）
50~56
15.88
6.35
（
*5
）
63~160
15.88
9.52
Round-way Cassette Indoor Unit
2-way Cassette Indoor Unit
High Wall Indoor Unit
22~63
12.7
6.35
（
*5
）
71~160
15.88
9.52
Fresh Air Ducted Indoor Unit
65,108
15.88
9.52
168
19.05
9.52
210
22.2
9.52
300,400
25.4
12.7
500,600
28.58
15.88
The Outdoor
Unit A
The Outdoor
Unit B
The Outdoor
Unit C
The Outdoor
Unit D
(
6
)
(
6
)
(
6
)
First Branch Pipe
(
3
)
La
L3
L3
L3
L1
L2
H2
H1
H5
Lb
Lc
Ld
1
1
2
5
5
3
3
3
4
4
4
1
1
Branch pipe 2
Branch
pipe 1
(*1)
(*4)
Branch pipe 3
Indoor Unit
Indoor Unit
Last
ID Unit
(*2)
L3
L3
L3
3
4
4
4
(*4)
Indoor Unit
Indoor Unit
Last
ID Unit
