Engineering Manual

B-130
Piping connection size
Flare connection employed. (No brazing!)
Pipe size (Branch box-Indoor unit) *Case of M series or S series Indoor unit
Indoor unit type (BTU/h) 06 09 12 15 18 24
Pipe size
(ømm) (inch)
Liquid
ø6.35
(1/4)
ø6.35
(1/4)
ø6.35
(1/4)
ø6.35
(1/4)
ø6.35
(1/4)
ø9.52
(3/8)
Gas
ø9.52
(3/8)
ø9.52
(3/8)
ø9.52
(3/8)
ø12.7
(1/2)
ø12.7
(1/2)
ø15.88
(5/8)
Pipe size (Branch box-Indoor unit) *Case of P series indoor unit
Indoor unit type (BTU/h) 12 18 24 30 36
Pipe size
(ømm) (inch)
Liquid
ø6.35
(1/4)
ø6.35
(1/4)
ø9.52
(3/8)
ø9.52
(3/8)
ø9.52
(3/8)
Gas
ø12.7
(1/2)
ø12.7
(1/2)
ø15.88
(5/8)
ø15.88
(5/8)
ø15.88
(5/8)
■
■
Liquid
Gas
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
* MXZ-8C60NA only
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 branches pipe (joint))
Refer to the installation manuals of MSDD-50AR-E and MSDD-50BR-E.