Mitsubishi Electric CITY MULTI PURY-P72TJMU-A Installation Manual page 10

A
Outdoor Unit combination
unit 1 unit 2 High-pressure side
model
P72 - -
P96 - -
P120 - -
P144 - -
P168 P96 P72
P192 P96 P96
P216 P120 P96 ø28.58 [1-1/8]
P240 P120 P120 ø28.58 [1-1/8]
P264 P144 P120 ø28.58 [1-1/8]
P288 P144 P144 ø28.58 [1-1/8]
*1 The pipe sizes listed in columns A1 to A2 in this table correspond to the sizes for the models listed in the unit 1 and 2 columns. When the order of unit 1 and 2 is
changed, make sure to use the appropriate pipe size for the model.
B
Total capacity of indoor units
~30
C, D
Downstream unit model total High-pressure gas pipe Low-pressure gas pipe
~72
73~108
109~126
127~144
145~168
a, b, c, d, e, f
Model number
06, 08, 12, 15, 18
24, 27, 30, 36, 48, 54
72
96
g, h, i, j
Model number
36
48
54
72
96
Outdoor model
P168,P192
P216~P288
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 (high-pressure side only).
A
D
<B> Slope of twinning pipes (high-pressure side only)
Make sure the slope of the twinning pipes are at an angle within ±15° to the ground.
If the slope exceeds the specifi ed angle, the unit may be damaged.
E
A
Downward slope
C
BC controller
E
Slope of the twinning pipe is at an angle within ±15° to the ground
Caution:
• Do not install traps to prevent oil backfl ow and compressor start-up failure.
• Do not install solenoid valves to prevent oil backfl ow and compressor start-up failure.
• Do not install a sight glass because it may show improper refrigerant fl ow.
If a sight glass is installed, inexperienced technicians that use the glass may overcharge the refrigerant.
10
A
Low-pressure side
ø15.88 [5/8] ø19.05 [3/4]
ø19.05 [3/4] ø22.2 [7/8]
ø19.05 [3/4] ø28.58 [1-1/8]
ø22.2 [7/8] ø28.58 [1-1/8]
ø22.2 [7/8] ø28.58 [1-1/8]
ø22.2 [7/8] ø28.58 [1-1/8]
ø28.58 [1-1/8]
ø28.58 [1-1/8]
ø34.93 [1-3/8]
ø34.93 [1-3/8]
(Unit: mm [in])
Liquid pipe Gas pipe
ø9.52 [3/8] ø15.88 [5/8]
ø15.88 [5/8] ø19.05 [3/4]
ø19.05 [3/4] ø22.2 [7/8]
ø19.05 [3/4] ø28.58 [1-1/8]
ø22.2 [7/8] ø28.58 [1-1/8]
ø22.2 [7/8] ø28.58 [1-1/8]
(Unit: mm [in])
Liquid pipe Gas pipe
ø6.35 [1/4] ø12.7 [1/2]
ø9.52 [3/8] ø15.88 [5/8]
ø9.52 [3/8] ø19.05 [3/4]
ø9.52 [3/8] ø22.2 [7/8]
Liquid pipe
g
h
ø9.52 [3/8] ø9.52 [3/8]
ø9.52 [3/8] ø9.52 [3/8]
ø9.52 [3/8] ø9.52 [3/8]
ø9.52 [3/8] ø9.52 [3/8]
ø9.52 [3/8] ø9.52 [3/8]
Outdoor Twinning Kit
CMY-R100VBK
CMY-R100XLVBK
C
D
B
Upward slope
D
Twinning pipe
A1 *1
High-pressure side Low-pressure side
- -
- -
- -
- -
ø19.05 [3/4] ø22.2 [7/8]
ø19.05 [3/4] ø22.2 [7/8]
ø19.05 [3/4] ø28.58 [1-1/8]
ø19.05 [3/4] ø28.58 [1-1/8]
ø22.2 [7/8] ø28.58 [1-1/8]
ø22.2 [7/8] ø28.58 [1-1/8]
(Unit: mm [in])
Liquid pipe
ø9.52 [3/8]
ø9.52 [3/8]
ø12.7 [1/2]
ø12.7 [1/2]
ø15.88 [5/8]
Gas pipe
i
ø15.88 [5/8] ø15.88 [5/8]
ø15.88 [5/8] ø15.88 [5/8]
ø15.88 [5/8] ø15.88 [5/8]
ø19.05 [3/4] ø15.88 [5/8]
ø22.2 [7/8] ø15.88 [5/8]
B
D
A2 *1
High-pressure side Low-pressure side
-
-
-
-
ø15.88 [5/8] ø19.05 [3/4]
ø19.05 [3/4] ø22.2 [7/8]
ø19.05 [3/4] ø22.2 [7/8]
ø19.05 [3/4] ø28.58 [1-1/8]
ø19.05 [3/4] ø28.58 [1-1/8]
ø22.2 [7/8] ø28.58 [1-1/8]
(Unit: mm [in])
j
C
(Unit: mm [in])
-
-
-
-