Mitsubishi Electric MXZ-8B140VA Technical & Service Manual page 11

2-5. SIMPLIFIED PIPING SYSTEM
Piping connection size
A
Liquid (mm) 9.52
15.88
Gas (mm)
For P100 indoor units, the individual Y-shape connection pipes use 2 ports on the branch box as shown below.
Branch box
a
Port A
a
Port B
Port C
Port D
Port E
To connect a single P100 indoor unit, use port A and port
B on the branch box.
■ In case of using 1-branch box
Flare connection employed (No brazing)
A
■ In case of using 2-branch boxes
A
OCH480A
The piping connection size differs according to the type and capacity of indoor units.
Match the piping connection size of branch box with indoor unit.
If the piping connection size of branch box does not match the piping connection size of
indoor unit, use optional different-diameter (deformed) joints to the branch box side.
(Connect deformed joint directly to the branch box side.)
Y-shape connection pipe
Indoor unit
b
(P100)
Flare connection employed. (No brazing!)
B B
2 branches pipe (joint)
: optional parts
A
A
B B
Branch box #2
B
Branch box
Port A
Port B
Port C
Port D
Port E
To connect two P100 indoor units, use port A and port B, and
port C and port D on the branch box.
Branch box
B B
Branch box #1
B
■ Installation procedure (2 branch pipe (joint))
Refer to the installation manuals of MSDD-50AR-E and MSDD-50BR-E.
11
Y-shape connection pipe
a b
a
Y-shape connection pipe
a b
a
B
B B
Indoor unit
(P100)
Indoor unit
(P100)