Pipe Connection Example - Mitsubishi Electric PURY-(E)P-YLM-A (-BS) 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
P400 to P500YSLM
P550 to P650YSLM
P700 to P800YSLM
P850 to P900YSLM
EP500YSLM
EP550 to EP900YSLM

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) or HBC controller (Hybrid City Multi
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.
・PURY-P200YLM-A, PURY-P250YLM-A, PURY-EP200YLM-A and PURY-EP250YLM-A can be used in a
Hybrid City Multi system. Contact your dealer when connecting the larger capacity units in a Hybrid City Multi
system.
WT07282X01
Kit model
CMY-R100VBK-A
CMY-R100VBK2
CMY-R200VBK2
CMY-R200XLVBK
CMY-ER100VBK-A
CMY-ER200VBK
Ⓑ
Ⓓ
Ⓔ
Ⓕ
Ⓐ
Ⓑ
Ⓒ
Ⓓ
Ⓔ
Ⓕ
GB-22
Outdoor unit twinning kit (low-pressure side)
Outdoor unit twinning kit (High-pressure side)
On-site piping between outdoor units (low-
pressure side)
In an R2 system: On-site piping to a BC
controller (low-pressure side)
In a Hybrid City Multi system: On-site piping to
an HBC controller (low-pressure side)
In an R2 system: On-site piping to a BC
controller (High-pressure side)
In a Hybrid City Multi system: On-site piping to
an HBC controller (High-pressure side)
The pipe section before the twinning pipe must
have at least 500 mm (19-11/16 in) of straight
section.