Mitsubishi Electric CITY MULTI Série Manuel D'installation page 8

[Outdoor model : P144 ~ P192]
u n i t 1 unit 2
A A
A A
1 2
A
E
A Outdoor unit
C Indoor unit
E Outdoor Twinning Kit
* The total length of A1 and A2 is less than 10 m [32 ft].
A
Unit combination
Outdoor model
unit 1
-
P72
-
P96
P72
P144
P96
P192
B, C, D
Total capacity of indoor units
~ 54
55 ~ 72
73 ~ 108
109 ~ 144
145 ~ 234
a, b, c, d, e
Model number Liquid pipe
06, 08, 12, 15, 18 ø6.35 [1/4]
24, 27, 30, 36, 48, 54 ø9.52 [3/8]
72 ø9.52 [3/8]
96 ø9.52 [3/8]
Precautions for outdoor unit combinations
Refer to [Fig. 9.2.2] for the positioning of twinning pipes.
[Fig. 9.2.2]
<A> Make sure the pipes from the twinning pipe to the outdoor unit are sloped downwards (towards the twinning pipes).
A
F
<B> When the piping on the outdoor unit side (from the twinning pipe) exceeds 2 m [6 ft], ensure a trap (gas pipe only) within 2 m [6 ft].
Make sure the height of the trap is 200 mm [7-7/8 in] or more.
If there is no trap, oil can accumulate inside the pipe, causing a shortage of oil and may damage the compressor.
F
2 [ 6 ]
8
B C D e
B
a b c d
C
C C C
B 1st branch
D Cap
F Header
A
unit 2 Liquid pipe
-
ø12.7 [1/2] Brazed ø19.05 [3/4] Brazed
-
ø12.7 [1/2] Brazed ø22.2 [7/8] Brazed
P72
ø15.88 [5/8] Brazed ø28.58 [1-1/8] Brazed
P96 ø15.88 [5/8] Brazed ø28.58 [1-1/8] Brazed
(Unit: mm [in])
Liquid pipe Gas pipe
ø9.52 [3/8] ø15.88 [5/8]
ø9.52 [3/8] ø19.05 [3/4]
ø9.52 [3/8] ø22.2 [7/8]
ø12.7 [1/2] ø28.58 [1-1/8]
ø15.88 [5/8] ø28.58 [1-1/8]
(Unit: mm [in])
Gas pipe
ø12.7 [1/2]
ø15.88 [5/8]
ø19.05 [3/4]
ø22.2 [7/8]
C
C
u n i t 1
A
A
1
C
A1
Gas pipe Liquid pipe Gas pipe
-
-
ø9.52 [3/8] Flare ø19.05 [3/4] Brazed
ø9.52 [3/8] Flare ø22.2 [7/8] Brazed
Downstream unit model total
~ 72
73 ~ 144
145 ~ 234
The 1st branch of P144 ~ P234
4-Branch header
(Downstream indoor
< =
unit model total 72)
CMY-Y104-G
Outdoor model
P144 ~ P192
B
F
D
E
u n i t 2
A
A
2
F
A
B
E
a b c d e
C C
C C C
A2
Liquid pipe Gas pipe
- -
- -
ø9.52 [3/8] Flare ø19.05 [3/4] Brazed
ø9.52 [3/8] Flare ø22.2 [7/8] Brazed
Joint
CMY-Y102S-G2
CMY-Y102L-G2
CMY-Y202-G2
8-Branch header 10-Branch header
(Downstream indoor (Downstream indoor
< =
unit model total 144) unit model total
CMY-Y108-G CMY-Y1010-G
Outdoor Twinning Kit
CMY-Y100VBK2
C
F
C
D
(Unit: mm [in])
-
-
< =
234)
(Unit: m [ft])