26
Indoor unit
type
Pipe size
(mm)
(kW)
Liquid
Gas
22
:
6.35
:
9.52
25
:
6.35
:
9.52
35
:
6.35
:
9.52
50
:
6.35
:
12.7
60
:
6.35
:
15.88
+
71
:
9.52
:
15.88
80
:
9.52
:
15.88
15
:
6.35
:
9.52
20
:
6.35
:
9.52
42
:
6.35
:
9.52
■
Pipe size (Branch box-Indoor unit) *Case of M series or S series Indoor unit
Indoor unit
type
Pipe size
(mm)
(kW)
Liquid
Gas
35
:
6.35
:
12.7
50
:
6.35
:
12.7
60
:
9.52
:
15.88
71
:
9.52
:
15.88
■
Pipe size (Branch box-Indoor unit) *Case of P series Indoor unit
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 or even a pipe
extraction may occur.
For liquid
For gas
:
9.52 mm
:
15.88 mm
UNIT
UNIT
UNIT
UNIT
UNIT
Liquid pipe
Gas pipe
Liquid pipe
Gas pipe
Liquid pipe
Gas pipe
Liquid pipe
Gas pipe
Liquid pipe
Gas pipe
:
6.35 mm
:
9.52 mm
:
6.35 mm
:
9.52 mm
:
6.35 mm
:
9.52 mm
:
6.35 mm
:
9.52 mm
:
6.35 mm
:
12.7 mm
+
3- branch type is only for
,
, and
unit.
+
+
+
:
6.35mm
:
9.52mm
:
12.7mm
:
15.88mm
:
19.05mm
Conversion formula
1/4 inch
3/8 inch
1/2 inch
5/8 inch
3/4 inch
(1) Valve size for outdoor unit
(2) Valve size for branch unit
Different-diameter joint (optional parts) (Fig.7-1)
Fig.7-1
MAC-A454JP
MAC-A455JP
MAC-A456JP
PAC-493PI
PAC-SG76RJ-E
W
9.52
©
W
12.7
W
12.7
©
W
9.52
W
12.7
©
W
15.88
W
6.35
©
W
9.52
W
9.52
©
W
15.88
W
9.52
W
12.7
W
12.7
W
6.35
W
9.52
W
12.7
W
9.52
W
15.88
W
9.52
W
15.88
Connected pipes diameter
mm
Diameter A
mm
Diameter B
mm
Model name
A
B
When using 60 type indoor unit of MEXZ series, use the flare nut in the indoor unit accessory for the gas side con-
necting of indoor unit.
Do not use the flare nut (gas side) attached to the indoor unit. If it is used, a gas leakage or even a pipe extraction
may occur.
