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Piping installation
Installer and user reference guide
76
RXYSQ4~6T8V/YB
VRV IV-S system air conditioner
4P482277-1B – 2020.10
To handle the service port
▪
Always use a charge hose equipped with a valve depressor pin, since the service
port is a Schrader type valve.
▪
After handling the service port, make sure to tighten the service port cover
securely. For the tightening torque, refer to the table below.
▪
Check for refrigerant leaks after tightening the service port cover.
Tightening torques
Stop valve size
(mm)
Tightening torque N•m (turn clockwise to close)
Shaft
Valve body
Hexagonal
wrench
Cap (valve lid)
Service port
Ø9.5
5.4~6.6
4 mm
13.5~16.5
11.5~13.9
Ø15.9
13.5~16.5
6 mm
22.5~27.5
18.2.8 To connect the refrigerant piping to the outdoor unit
NOTICE
Be sure that the field installed piping does not touch other pipes, the bottom panel
or side panel. Especially for the bottom and side connection, be sure to protect the
piping with suitable insulation, to prevent it from coming into contact with the
casing.
1
Do the following:
▪
Remove the service cover (a) with screw (b).
▪
Remove the piping intake plate (c) with screw (d).
c
a
b
d
2
Choose a piping route (a, b, c or d).
a
b
c
d