How To Install Branch Pipe - Mitsubishi Electric CITY MULTI PUHY-YSMF-B Installationshandbuch

10.6. How to install branch pipe

For detail, please observe the instruction manual attached to the op-
tional refrigerant branch kit.
Joint
A
A To outdoor unit
B To branch piping or indoor unit
• Apart from the CMY-Y202-F and CMY-Y302-F gas side, there are no
restrictions on the posture for attaching joints.
• Ensure that the branch pipes for the CMY-Y202-F and CMY-Y302-F
gas side are attached horizontally or facing upwards (see the dia-
gram below).
Horizontal
Within ±15°
• There is no limitation on the joint mounting configuration.
• If the diameter of the refrigerant piping selected by the procedures
described on pages 13 to 14 is different from the size of the joint,
match the sizes using a deformed joint. The deformed joint is included
with the kit.
Header
A
A To outdoor unit
B To indoor unit
• No restriction is applied to the mounting posture of the header.
• If the diameter of the refrigerant piping selected using the proce-
dures described on pages 14 and the size of the joint is different,
match the sizes using a deformed joint. The deformed joint is included
with the kit.
20
B
Facing upwards
(Facing downwards is not possible)
Within ±15°
Within ±15°
B
C
C Pipe cutter
D or
E Deformed joint
• When the number of pipes to be connected is smaller than the number
of header branches, install a cap to the unconnected branches. The
cap is included with the kit.
Distributer (liquid)
Field piping
Field piping
Variable
Variable
capacity unit
capasity unit
• Mount the distributor (liquid, optional CMC-30A) so that it is within
±15° in relation to the horizontal plane (see figure above).
D
E
±15°
Constant
Constant
capacity unit
capasity unit