Pipe Selection; Twinning Kit Selection - Mitsubishi Electric CITY MULTI PURY-P-YNW-A2 Installation Manual

9-2. Pipe selection

Use refrigerant piping made of phosphorus deoxidized copper (copper and copper alloy
seamless pipes) that meets local requirements. Pipe joints should also meet local
requirements. Keep the inner and outer surfaces of the pipes clean and free of sulphur,
oxides, dust/dirt, shaving particles, oils, moisture, or any other contaminants.
- Contaminants on the inside of the refrigerant piping will cause the refrigerant oil to deteriorate
and cause the compressor to malfunction.
Use refrigerant pipes for use with R410A refrigerant system. Piping for systems for use with other types of refrigerants
may not be able to be used.
Use refrigerant pipes with the thicknesses specified in the table below.
Size [mm (in)] Radial thickness [mm (mil)]
ø6.35 (ø1/4)
ø9.52 (ø3/8)
ø12.7 (ø1/2)
ø15.88 (ø5/8)
ø19.05 (ø3/4)
ø22.2 (ø7/8)
ø25.4 (ø1)
ø28.58 (ø1-1/8)
ø31.75 (ø1-1/4)
ø34.93 (ø1-3/8)
ø41.28 (ø1-5/8)

9-3. Twinning kit selection

Select appropriate twinning kits (sold separately), referring to the sections below.
* Use an adapter, if necessary, to connect a refrigerant pipe to a twinning pipe of a different diameter.
9-3-1. 2-Branch Joint Pipe
A 2-Branch Joint Pipe is used to connect multiple indoor units to a port, or to connect sub BC controllers.
(1) R2 system
2-Branch Joint Pipe between BC controllers and indoor units
Total capacity of downstream indoor units
200 or below
201 to 250
2-Branch Joint Pipe between main and sub BC controllers
Total capacity of downstream indoor units
350 or below
351 to 600
601 to 650
651 to 1000
1001 or above
Low-pressure Pipe Joint between outdoor units and sub BC controllers
(for P-JA type, P-KA type, and P-KB type BC controllers)
Outdoor unit capacity
(E)P200 - (E)P650
(E)P700 - (E)P1100
(2) Hybrid City Multi system
・Connect the pipes on site, referring to the HBC controller Installation Manual.
・CMY-Y102SS-G2 and CMY-Y102LS-G2 are used in an R2 system, and cannot be used in a Hybrid City Multi
system.
WT09973X01
Type
0.8 (32) Type-O
0.8 (32) Type-O
0.8 (32) Type-O
1.0 (40) Type-O
1.2 (48) Type-O
1.0 (40) Type-1/2H or H
1.0 (40) Type-1/2H or H
1.0 (40) Type-1/2H or H
1.0 (40) Type-1/2H or H
1.1 (44) Type-1/2H or H
1.2 (48) Type-1/2H or H
1.4 (56) Type-1/2H or H
Kit model
CMY-Y102SS-G2
CMY-Y102LS-G2
Kit model
CMY-R201S-G
CMY-R202S-G
CMY-R203S-G
CMY-R204S-G
CMY-R205S-G
Kit model
CMY-R101S-G
CMY-R102S-G
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