Mitsubishi Electric CITY MULTI PURY-HP-TNU-A1 Manuel D'installation page 22

9-4-2. Example of pipe connection between an outdoor unit and BC controller, and between a BC
controller and indoor unit (R2 system)
HP72 to HP120
Unit 1
Ⓐ
Ⓙ
A
Ⓘ
A
Ⓕ
a
b
a
Ⓝ Ⓞ
Ⓔ
Ⓓ
HP144 to HP240
Unit 2
Unit 1
Ⓐ
Ⓐ
A2
A1
A1
A2
Ⓗ
Ⓙ
A
Ⓘ
a
Ⓝ Ⓞ
Ⓓ
*1
j
Ⓑ Ⓒ
l
i
k
Ⓔ
* Contact your dealer for pipe connection examples when connecting CMB-P**-NU-G(1), CMB-P**-NU-GA(1), CMB-P**-NU-HA(1), CMB-P**-NU-GB(1), or CMB-P**-NU-HB(1).
WT10508X02
Ⓑ
b
Ⓖ
B
B
c
c
Ⓓ
*1
A
Ⓛ
C
Ⓚ
Ⓑ
C
Ⓜ
C
Ⓕ
b
a b
Ⓖ
B
B
c
c
Ⓔ Ⓓ
*1
Ⓓ
d
d
Ⓓ
e
e
Ⓒ
D D
Ⓖ Ⓖ
D
E
E
E
F
F
F
Ⓒ
d f
d f
Ⓓ
Ⓓ
GB-20
Ⓐ 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
Ⓙ Low-pressure pipe (A, A
1
Ⓚ 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)
Ⓖ
G I
G I
G I
H
H
H
Ⓒ
g
g
Ⓓ
, A )
1 2
, A )
2
Ⓒ
h
h
Ⓓ