Mitsubishi Electric BDT CITY MULTI, Installation And Pre-Commissioning Booklet

Page: 7 / 68

7
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.
Outdoor unit 2 Outdoor unit 1
High-pressure
twinning pipe
200mm [7-7/8 in.]
max.
To BC controller
Twinning pipe (low-pressure side)
Twinning pipe (high-pressure side)
On-site piping (low-pressure connecting pipe: between outdoor units)
On-site piping (low-pressure main pipe: to BC controller)
On-site piping (high-pressure main pipe: to BC controller)
Straight run of pipe that is 500 mm [19-11/16 in.] or more
See the Installati
on Manual for the details of Twinning pipe instal
lation.
See the following drawing for connecting the pipes between the outdoor units.
Twinning on the outdoor unit side
R2 SERIES TWINNING KIT PIPING