Pipe Connection Example - Mitsubishi Electric CITY MULTI PURY-P-ZKMU-A Installation Manual

9-3-3. Outdoor unit twinning kit
Outdoor unit twinning kit is used to combine multiple outdoor units.
Total capacity of outdoor units
P168 to P192ZSKMU
P216 to P288ZSKMU

9-4. Pipe connection example

9-4-1. Example of pipe connection between outdoor units, and between an outdoor unit and BC
controller (R2 system)
Ⓐ
Ⓒ
・The outdoor unit twinning kit on the low-pressure side must be placed in the outdoor unit that has the larger capacity index of the two,
regardless of the relative positions of the outdoor units or their addresses. (If outdoor units that have the same capacity are used in
combination, the twinning kit can be placed in either outdoor unit.) If the twinning kit is placed in the outdoor unit that has the smaller capacity,
refrigerant will not be properly distributed and compressor failure may result.
WT07828X01
Kit model
CMY-R100CBK2
CMY-R100XLCBK
Ⓑ
Ⓓ
Ⓔ
Ⓕ
GB-15
Ⓐ Outdoor unit twinning kit (low-pressure side)
Ⓑ Outdoor unit twinning kit (High-pressure side)
Ⓒ
On-site piping between outdoor units (low-
pressure side)
Ⓓ On-site piping to a BC controller (low-pressure
side)
Ⓔ On-site piping to a BC controller (High-
pressure side)
Ⓕ
The pipe section before the twinning pipe must
have at least 500 mm (19-11/16 in) of straight
section.