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Mitsubishi Electric PURY-HP72 Service Handbook page 70

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[2-10 Restrictions on Refrigerant Pipes ]
1) To connect P06 - P18 models of indoor units use
the reducer that is supplied with the BC controller.
Liquid pipe side:3/8F
(Flare connection)
Gas pipe side:5/8F
(Flare connection)
Note) Use the flare nut that is supplied with the BC controller.
3) To connect multiple indoor units to a port (or to a junction pipe)
Maximum total capacity of connected indoor units: P54 or below (in a system with a junction pipe: P96 or below)
Maximum number of connectable indoor units: 3 units
Branch joint: Use CMY-Y102S-G2 (optional accessory).
Refrigerant pipe selection (size of the pipes A and B in the previous page) : Select the proper size pipes based
on the total capacity of the downstream indoor units, using the table below as a reference.
Total capacity of indoor units
P54 or below
P55 - P72
P73 - P96
HWE13080
50 [1-31/32"]
Liquid pipe side: 6.35[1/4"]ID
Gas pipe side: 12.7[1/2"]ID
Liquid pipe
ø9.52 [3/8"]
ø9.52 [3/8"]
ø9.52 [3/8"]
2) To connect P72 - P96 models of indoor units (or when the
total capacity of indoor units exceeds P55), use a junction
pipe kit and merge the two nozzles.
Liquid pipe side:3/8F
(Flare connection)
Gas pipe side:5/8F
(Flare connection)
- 59 -
234 [9-7/32"]
Liquid pipe side: 9.52[3/8"]ID
Gas pipe side: 19.05[3/4"]ID(*1)
Supplied with a thermal insulation cover
Unit : mm [inch]
Gas pipe
ø15.88 [5/8"]
ø19.05 [3/4"]
ø22.2 [7/8"]
GB
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