41
OCH673D
When using 35, 50 type indoor unit of P series, use the flare nut (for R410A) attached to the indoor unit.
Do not use the flare nut (for R407C) in the indoor unit accessory. If it is used, a gas leakage may occur or a pipe may come off.
■ Pipe size (Branch box-Indoor unit) For M or S series Indoor unit
Indoor unit type
(kW)
–
42
50
60
71 –
Pipe size
(ø mm)
Liquid
ø6.35
ø6.35
ø6.35
ø9.52
Gas
ø9.52
ø12.7
ø15.88
ø15.88
■ Pipe size (Branch box-Indoor unit) For P series Indoor unit
Indoor unit type
(kW)
–
50
60 –
Pipe size
(ø mm)
Liquid
ø6.35
ø9.52
Gas
ø12.7
ø15.88
■ Pipe size (Branch box-Indoor unit) For Cylinder unit and Hydrobox
Pipe size
(ø mm)
Liquid
ø9.52
Gas
ø15.88
(1) Valve size of branch box for outdoor unit
For liquid
ø9.52 mm
For gas
ø15.88 mm
(2) Valve size of branch box for indoor unit
* UNIT
Liquid pipe
ø6.35 mm
Gas pipe
ø9.52 mm
* UNIT
Liquid pipe
ø6.35 mm
Gas pipe
ø9.52 mm
* UNIT
Liquid pipe
ø6.35 mm
Gas pipe
ø9.52 mm
UNIT
Liquid pipe
ø6.35 mm
Gas pipe
ø9.52 mm
UNIT
Liquid pipe
ø6.35 mm
Gas pipe
ø12.7 mm
* 3- branch type is only for , , and unit.
Different-diameter joint (optional parts)
Type
Model name
Connected pipes
diameter
Diameter A Diameter B
mm
mm
mm
Flare
(Fig.7-1)
PAC-493PI
ø
6.35 →
ø9.52
ø6.35
ø9.52
MAC-A454JP-E
ø
9.52 →
ø12.7
ø9.52
ø12.7
PAC-SG76RJ-E
ø
9.52 →
ø15.88
ø9.52
ø15.88
MAC-A455JP-E
ø
12.7 →
ø9.52
ø12.7
ø9.52
MAC-A456JP-E
ø
12.7 →
ø15.88
ø12.7
ø15.88
A
B
Fig.7-1
Conversion formula
1/4 inch ø6.35 mm
3/8 inch ø9.52 mm
1/2 inch ø12.7 mm
5/8 inch ø15.88 mm
3/4 inch ø19.05 mm