9-4-2. Example of pipe connection between an outdoor unit and BC controller, and between a BC
controller and indoor unit (R2 system)
H072 to H120
Unit 1
Ⓐ
Ⓙ
A
Ⓘ
A
Ⓑ
Ⓕ
a
b
a
b
Ⓝ
Ⓞ
Ⓔ
Ⓓ
*1
H144 to H240
Unit 1
Unit 2
Ⓐ
Ⓐ
A1
A2
A2
A1
Ⓗ
Ⓙ
A
A
Ⓘ
a
a
Ⓝ
Ⓞ
Ⓓ
*1
j
Ⓑ Ⓒ
l
i
k
Ⓔ
WT09117X05
Ⓓ
d
d
Ⓖ
B
B
c
c
Ⓓ
Ⓖ
Ⓖ
D D
Ⓛ
C
Ⓚ
C
Ⓜ
Ⓑ
C
Ⓕ
b
b
Ⓖ
B
B
c
d
c
Ⓔ
Ⓓ
*1
Ⓐ
Ⓑ
Ⓒ
Ⓓ
Ⓔ
Ⓕ
Ⓖ
Ⓗ
Ⓘ
Ⓙ
Ⓚ
Ⓛ
Ⓜ
Ⓝ
Ⓞ
Ⓓ
e
e
Ⓒ
Ⓖ
D
E
G
G
E
G
E
F
F
F
Ⓒ
f
f
d
Ⓓ
Ⓓ
GB-19
Outdoor unit
BC controller (Main)
BC controller (Sub)
Indoor unit (Total capacity of downstream indoor
units: 06 to 30)
Indoor unit (Total capacity of downstream indoor
units: 36 to 96)
Joint Pipe Kit
2-Branch Joint Pipe
Outdoor unit twinning kit
High-pressure pipe (A, A
, A
)
1
2
Low-pressure pipe (A, A
, A
)
1
2
High-pressure pipe (C, D, E, F, G, H, I)
Low-pressure pipe (C, D, E, F, G, H, I)
Liquid pipe (C, D, E, F, G, H, I)
Liquid pipe (a, b, c, d, e, f, g, h)
Gas pipe (a, b, c, d, e, f, g, h)
Ⓖ
I
I
I
H
H
H
Ⓒ
g
g
Ⓓ
Ⓒ
h
h
Ⓓ