Mitsubishi Electric BDT CITY MULTI Installation And Pre-Commissioning Booklet page 10

Y SERIES TWINNING KIT PIPING
Correct piping of the twinning kit is essential to the performance and safety of the equipment
installed. It is critical that the instructions below are followed closely as incorrect piping can lead to
performance loss and/or catastrophic failure of the compressor.
Twinning on the outdoor unit side
See the following drawing for connecting the pipes between the outdoor units.
<In case of 2 unit combination>
<In case of 3 unit combination>
Field piping
CAUTION
The length of the straight pipe must be 500mm[19-11/16 in.] or longer.
If not, it may cause improper operation.
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Field piping
Twinning kit
Field piping
Twinning kit
Field piping
Twinning kit
Field piping