Mitsubishi Electric CITY MULTI PUHY-P-YKB-A1 Manuel D'installation page 22

9-3. Twinning kit selection
9-3-1. Indoor unit twinning kit
Select a proper indoor unit twinning kit (sold separately) based on the total capacity of the downstream indoor units,
using the table below as a reference.
Line branching
Total capacity of downstream indoor units
200 or below
201 to 400
401 to 650
651 or above
Line branching for the 1st branching point
Outdoor unit model
P450 to P650
P700 to P1350
Header branching
Total capacity of downstream indoor units
200 or below
400 or below
650 or below
* Use an adapter, if necessary, to connect a refrigerant pipe to a twinning pipe of a different diameter.
9-3-2. Outdoor unit twinning kit
Select a proper outdoor unit twinning kit (sold separately) based on the total capacity of the outdoor units, using the
table below as a reference.
Total capacity of outdoor units
P400 to P650
P700 to P900
P950 to P1350
9-4. Pipe connection example
・Example of pipe connection between outdoor units
Ⓐ
KD79S703H01
Kit model
CMY-Y102SS-G2
CMY-Y102LS-G2
CMY-Y202S-G2
CMY-Y302S-G2
Kit model
CMY-Y202S-G2
CMY-Y302S-G2
Number of branches
4
8
10
Kit model
CMY-Y100VBK3
CMY-Y200VBK2
CMY-Y300VBK3
Ⓑ
Ⓐ
Ⓒ
Kit model
CMY-Y104-G
CMY-Y108-G
CMY-Y1010-G
Ⓐ
Ⓑ
Ⓒ
GB-20
On-site piping
Twinning Kit
The pipe section before the twinning pipe must
have at least 500 mm (19-11/16 in) of straight
section.