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18
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Piping installation
Installer and user reference guide
83
RXYSA4~6A7V/Y1B
VRV 5-S system air conditioner
4P600330-1 – 2020.01
18.2.5 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
1
Remove the stop valve cover.
2
Insert a hexagon wrench (liquid side: 4 mm, gas side: 6 mm) into the valve
stem and turn the valve stem:
Counterclockwise to open
Clockwise to close
3
When the stop valve CANNOT be turned any further, stop turning.
4
Tighten the stop valve securely when opening or closing the stop valve. For
the correct tightening torque value, refer to the table below.
NOTICE
Inadequate torque may cause leakage of refrigerant and breakage of the stop valve.
5
Install the stop valve cover.
Result:
The valve is now open/closed.
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