Mitsubishi Electric BDT CITY MULTI Installation And Pre-Commissioning Booklet page 7

R2 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.
200mm [7-7/8 in.]
max.
Twinning on the outdoor unit side
See the following drawing for connecting the pipes between the outdoor units.
Twinning pipe (low-pressure side)
On-site piping (low-pressure connecting pipe: between outdoor units)
Outdoor unit 1 Outdoor unit 2
High-pressure
twinning pipe
Twinning pipe (high-pressure side)
To BC controller
On-site piping (low-pressure main pipe: to BC controller)
On-site piping (high-pressure main pipe: to BC controller)
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