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Piping installation
Installer and user reference guide
75
RXYSQ4~6T8V/YB
VRV IV-S system air conditioner
4P482277-1B – 2020.10
18.2.7 Using the stop valve and service port
To handle the stop valve
Take the following guidelines into account:
▪
Make sure to keep all stop valves open during operation.
▪
The gas and liquid stop valves are factory closed.
▪
The figures below show the name of each part required in handling the stop
valve.
c
d
a
b
a
Service port and service port cover
b
Stop valve
c
Field piping connection
d
Stop valve cover
a
b
c
d
e
a
Service port
b
Stop valve cover
c
Hexagon hole
d
Shaft
e
Valve seat
▪
Do NOT apply excessive force to the stop valve. Doing so may break the valve
body.
To open/close the stop valve
Counterclockwise to open
Clockwise to close
Result:
The valve is now open/closed.
To handle the stop valve cover
▪
The stop valve cover is sealed where indicated by the arrow. Do NOT damage it.
▪
After handling the stop valve, tighten the stop valve cover securely, and check for
refrigerant leaks. For the tightening torque, refer to the table below.