Mitsubishi Electric City Multi R2 Series Installation Manual page 23

・Restriction on installing the 2-Branch Joint Pipe CMY-R101/102S-G on the low-pressure piping
To outdoor unit
- Regarding the 2-Branch Joint Pipe on the low-pressure piping, A and B must be installed horizontally, and C must
be installed upward higher than the horizontal plane of A and B.
・Restriction on installing the 2-Branch Joint Pipe CMY-R201/202/203/204/205S-G on the high-pressure piping, low-
pressure piping, and liquid piping.
To main BC controller
- Regarding the 2-Branch Joint Pipe on the high-pressure/low-pressure/liquid piping, A and B must be installed
horizontally, and C must be installed upward higher than the horizontal plane of A and B.
・If the length of the pipe between the branching point and the outdoor unit exceeds 2 m (6 ft), provide a trap within 2
m (6 ft) from the branching point.
The trap must be at least 200 mm (7-7/8 in) in height. (gas pipe only) If there is no trap, oil can accumulate inside
the pipe, causing a shortage of oil and may damage the compressor.
* Small dots in the figures indicate branching points.
2 m (6 ft)
Ⓐ
To indoor units
Ⓑ
Trap (high-pressure pipe only)
Ⓒ
High-pressure pipe
WT08432X01
To sub BC controller
C
A
B
To main BC controller
To sub BC controller
C
A
B
To sub BC controller
Ⓐ
Ⓑ
Ⓐ
Ⓒ
GB-21