253
<Table 2> Dimensions (mm) of connection tube of the indoor units
Indoor (×100W) Gas pipe (mm) Liquid pipe (mm)
7.5~9.5(22~28) 3/8(9.52)×0.8 1/4(6.35)×0.8
12.3~19.1(36~56) 1/2(12.7)×0.8 1/4(6.35)×0.8
24.2~38.2(71~112) 5/8(15.88)×1.0 3/8(9.52)×0.8
Note:
High wall 0.8/1HP gas pipe: Ø12.7
High wall 2HP gas pipe/liquid pipe: Ø15.88/Ø9.52
<Table 3> Dimensions (mm) of connection pipe of the vale box
Pipe connection
Type of valve
box for switch
between cooling
and heating
Pipe dimensions (OD × minimum wall thickness)
High pressure gas
pipe
Suction gas pipe
Liquid pipe at the
outdoor unit side
Gas pipe of
the indoor unit
Liquid pipe at
the indoor unit
side
VP4-450B 1-1/8
(
28.58)×1.2 1-1/8
(
28.58)×1.2 5/8(15.88)×1.0 5/8(15.88)×1.0 3/8(9.52)×0.8
(*1) Refer to the eld pipe
(*2) Please use the are nut installed on the product body again.
Note:
During installation, please conrm the HP gas pipe and Suction gas pipe between outdoor and valve box (such as
by sending nitrogen into the HP gas pipe and Suction gas pipe), then connect Suction gas pipe to the Suction gas
pipe of valve box, HP gas pipe to the HP gas pipe of valve box.
(Note):
When a 072, 092 indoor unit is connected in the downstream, please use the auxiliary
pipe
-1,2 for connection according to Fig.11.
When a 122, 162, 182 indoor unit is connected in the downstream, please use the auxiliary pipe -1,3 for
connection according to Fig.11.
When a High wall 0.8/1HP indoor unit is connected in the downstream, please use the auxiliary pipe -1,3 f
or connection according to Fig.11.
When an High wall 2HP indoor unit is connected in the downstream, do not use the auxiliary pipe.
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