EN
13
Digital Inverter
Refrigerant Pipe Length
Simultaneous twin, triple
Simultaneous double twin
Outdoor
unit
Allowable pipe length (m)
Height difference (m)
Total length
• 1
+ 2
• 1
+ 3
• 1
+ 4
Maximum
Branch piping
• 2
• 3
• 4
Maximum
Branch piping
• 3
– 2
• 4
– 2
• 4
– 3
Maximum
Indoor-outdoor H
Indoor-indoor
(
Δ
h)
Indoor unit:
Upper
Outdoor unit:
Upper
SM2244
70
20
10
30
30
0.5
SM2804
70
20
10
30
30
0.5
Outdoor
unit
Pipe diameter (mm)
Number of bent
portions
Main pipe
Branch piping
Gas side
Liquid side
Gas side
Liquid side
SM2244
Ø28.6
Ø12.7
Ø15.9
Ø9.5
10 or less
SM2804
Ø28.6
Ø12.7
Ø15.9
Ø9.5
10 or less
Outdoor
unit
Allowable pipe length (m)
Height difference (m)
Total length
• 1
+ 2
+ 4
• 1
+ 2
+ 5
• 1
+ 3
+ 6
• 1
+ 3
+ 7
Maximum
Branch
piping
• 4
• 5
• 6
• 7
Maximum
Branch
piping
• 4
+ 2
• 5
+ 2
• 6
+ 3
• 7
+ 3
Maximum
Branch piping
• ( 4 + 2) – ( 5 + 2)
• ( 4 + 2) – ( 6 + 3)
• ( 4 + 2) – ( 7 + 3)
• ( 5 + 2) – ( 6 + 3)
• ( 5 + 2) – ( 7 + 3)
• ( 6 + 3) – ( 7 + 3)
Maximum
Indoor-outdoor H
Indoor-
indoor
(
Δ
h)
Indoor
unit:
Upper
Outdoor
unit:
Upper
SM2244
70
15
20
6
30
30
0.5
SM2804
70
15
20
6
30
30
0.5
Outdoor
unit
Pipe diameter (mm)
Number of bent
portions
Main pipe
Branch piping
Gas side
Liquid side
Gas side
Liquid side
SM2244
Ø28.6
Ø12.7
2, 3:
Ø15.9
4, 5, 6, 7:
Ø12.7
2, 3:
Ø9.5
4, 5, 6, 7:
Ø6.4
10 or less
SM2804
Ø28.6
Ø12.7
2 to 7:
Ø15.9
2 to 7:
Ø9.5
10 or less
3
2
4
1
H
2
3
H
1
Figure of Simultaneous twin
Indoor Unit
Indoor Unit
Outdoor Unit
Indoor Unit
Indoor Unit
Outdoor Unit
Indoor Unit
Figure of Simultaneous triple
4
5
2
1
3
6
7
H
Figure of Simultaneous double twin
Indoor Unit
Indoor Unit
Outdoor Unit
Indoor Unit
Indoor Unit