Mitsubishi Electric MXZ-8B140VA, Technical & Service Manual

Page: 11 / 531

11
2-5. SIMPLIFIED PIPING SYSTEM
Piping connection size
Liquid (mm)
Gas (mm)
W
9.52
W
15.88
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.)
A B
Flare connection employed. (No brazing!)
A
B B B B B
Branch box
■
In case of using 1-branch box
Flare connection employed (No brazing)
A A
A
B B B B B
2 branches pipe (joint)
: optional parts
Branch box #1
Branch box #2
■
In case of using 2-branch boxes
■
Installation procedure (2 branch pipe (joint))
Refer to the installation manuals of MSDD-50AR-E and MSDD-50BR-E.
For P100 indoor units, the individual Y-shape connection pipes use 2 ports on the branch box as shown below.
Port A
Port B
Port C
Port D
Port E
Indoor unit
(P100)
a
a
b
Y-shape connection pipe
Branch box
To connect two P100 indoor units, use port A and port B, and
port C and port D on the branch box.
Port A
Port B
Port C
Port D
Port E
Indoor unit
(P100)
a
a
a
a
b
Indoor unit
(P100)
b
Y-shape connection pipe
Y-shape connection pipe
Branch box
To connect a single P100 indoor unit, use port A and port
B on the branch box.
OCH480A