Connectable Pipe Diameter And Max. Piping Length - Fujitsu AOYG36LATT Installation Manual

4.3.1. Single type installation
Capacity [Btu/h class]
Pipe diameter <Liquid/Gas>
(Standard)
Max. piping length (L1)
Min. piping length (L1)
Max. height difference (H1)
<Indoor unit to outdoor unit>
View (Example)
*1: For the standard pipe diameter.
4.3.2. Simultaneous operation multi type installation
Be certain to install indoor units in the same room because the combinations are for
simultaneous operation.
The lengths after branching should be equal if possible.
Twin type
Capacity [Btu/h class]
Indoor unit capacity
[Btu/h class]
Main pipe diameter (L1)
<Liquid/Gas>
(Standard)
Branch pipe diameter (L2, L3)
<Liquid/Gas>
Max. piping length
(L1+L2+L3)
Min. piping length
(L1+L2+L3)
Max. branch piping
length (L2, L3)
Max. difference between branch lengths
(L2 to L3)
Max. height difference (H1)
<Indoor unit to outdoor unit>
Max. height difference (H2)
<Indoor unit to indoor unit>
View (Example)
*1: For the standard pipe diameter.
En-6
36,000 45,000
9.52 (3/8) / 15.88 (5/8)
[mm (in.)]
*1
75
[m]
5
[m]
30
[m]
L1
CAUTION
36,000 45,000
18,000 22,000
+ 18,000 + 22,000
9.52 (3/8) / 15.88 (5/8)
[mm (in.)]
6.35 (1/4) / 9.52 (3/8) /
12.70 (1/2) 15.88 (5/8)
[mm (in.)]
*1
75
[m]
5
[m]
20
[m]
8
[m]
30
[m]
0.5
[m]
L2
H2
L3
Triple type
54,000
Capacity [Btu/h class]
Indoor unit capacity
[Btu/h class]
Main pipe diameter (L1)
<Liquid/Gas>
(Standard)
Branch pipe diameter
(L2, L3, L4)
<Liquid/Gas>
Max. piping length
(L1+L2+L3+L4)
Min. piping length
(L1+L2+L3+L4)
H1
Max. branch piping length
(L2, L3, L4)
Max. difference between branch lengths
(L2 to L4)
Max. height difference (H1)
<Indoor unit to outdoor unit>
Max. height difference (H2)
<Indoor unit to indoor unit>
View (Example)
54,000
24,000
+ 24,000
*1: For the standard pipe diameter.

4.4. Connectable pipe diameter and max. piping length

The figures enclosed by a thick-lined frame indicate the standard pipe diameter and max.
piping length.
4.4.1. Single type installation
Capacity [Btu/h class]
Pipe diameter
[mm (in.)]
Piping length
[m (m)]
*1: Refer to "View" in the table of "4.3.1. Single type installation".
4.4.2. Simultaneous operation multi type installation
Twin type
Capacity [Btu/h class]
Main piping
L1
[mm (in.)]
H1
Branch piping
[mm (in.)]
Piping length
[m (m)]
Capacity [Btu/h class]
Main piping
[mm (in.)]
Branch piping
[mm (in.)]
Piping length
[m (m)]
*1: Refer to "View" in Twin type of 4.3.2. Simultaneous operation multi type installation.
Triple type
Capacity [Btu/h class]
Main piping
[mm (in.)]
Branch piping
[mm (in.)]
Piping length
[m (m)]
*1: Refer to "View" in Triple type of 4.3.2. Simultaneous operation multi type installation.
18,000 + 18,000 + 18,000
[mm (in.)]
[mm (in.)]
[m]
[m]
[m]
[m]
[m]
[m]
H2
36,000 / 45,000 / 54,000
9.52 (3/8)
Liquid pipes
15.88
Gas pipes
(5/8)
*1
Max. piping length < L1 >
75
(Pre-charge length) [30]
9.52 (3/8)
Liquid pipes
15.88
Gas pipes
(5/8)
Liquid pipes
Gas pipes
Max. piping length
75
<L1+L2+L3> *1
[30]
(Pre-charge length)
9.52 (3/8)
Liquid pipes
15.88
Gas pipes
(5/8)
Liquid pipes
Gas pipes
Max. piping length
75
*1
<L1+L2+L3>
[30]
(Pre-charge length)
9.52 (3/8)
Liquid pipes
15.88
Gas pipes
(5/8)
Liquid pipes
Gas pipes
Max. piping length
75
*1
<L1+L2+L3+L4>
[30]
(Pre-charge length)
54,000
9.52 (3/8) / 15.88 (5/8)
6.35 (1/4) / 12.70 (1/2)
*1
75
5
20
8
30
0.5
L2
L3
L4 L1
H1
12.70 (1/2)
19.05 15.88 19.05
(3/4) (5/8) (3/4)
50 35 35
[30] [15] [15]
36,000
12.70 (1/2)
19.05 15.88 19.05
(3/4) (5/8) (3/4)
6.35 (1/4)
12.70 (1/2)
50 35 35
[30] [15] [15]
45,000 / 54,000
12.70 (1/2)
19.05 15.88 19.05
(3/4) (5/8) (3/4)
9.52 (3/8)
15.88 (5/8)
50 35 35
[30] [15] [15]
54,000
12.70 (1/2)
19.05 15.88 19.05
(3/4) (5/8) (3/4)
6.35 (1/4)
12.70 (1/2)
50 35 35
[30] [15] [15]