GB
12
Piping length and height between indoor unit and BC controller
Pipe length between Main or Sub BC
controller and indoor unit (m)
0
5
10
15
0
5
10
15
10
20
30
40
50
60
70
80
90
100
10
20
30
40
50
60
70
80
90
100
Height difference between
the main BC controller and indoor unit (m)
Height difference between
the main BC controller and indoor unit (m)
*3 When the piping length or the height difference exceeds the restriction
specified in Fig. 1, connect a sub BC controller to the system. The
restriction for a system with a sub BC controller is shown in Fig. 2.
When a given system configuration falls within the shaded area in Fig.
2, increase the size of the high-pressure pipe and the liquid pipe
between the main and sub BC controller by one size. When using P32,
P40, P50, P100, or P125 model of indoor units, increase the size of the
liquid branch pipe between the sub BC controller and indoor unit by
one size.
When using P140 or larger model of indoor units, the restriction shown
in Fig. 1 cannot be exceeded.
*3
Pipe length between Main BC controller
,
Sub BC controller
, and indoor unit (m)
Fig. 1
Fig. 2
Fig. 1
BC
Sub
BC
Fig. 2
Fig. 1
Fig. 2
Sub
BC
Fig. 1
Indoor
unit
Indoor
unit
Indoor
unit
