18
|
Piping installation
Installer and user reference guide
88
RWEYQ8~14T9Y1B
VRV IV water-cooled system air conditioner
4P452191-1B – 2020.10
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 the stop valve
1
Remove the stop valve cover.
2
Insert a hexagon wrench into the stop valve and turn the stop valve
counterclockwise.
3
When the stop valve cannot be turned any further, stop turning.
4
Install the stop valve cover.
Result:
The valve is now open.
To fully open the Ø19.1~Ø25.4 mm stop valve, turn the hexagonal wrench until a
torque between 27 and 33 N•m is achieved.
Inadequate torque may cause leakage of refrigerant and breakage of the stop valve
cap.
To close the stop valve
1
Remove the stop valve cover.
2
Insert a hexagon wrench into the stop valve and turn the stop valve clockwise.
3
When the stop valve cannot be turned any further, stop turning.
4
Install the stop valve cover.
Result:
The valve is now closed.
To handle the stop valve cover
▪
The stop valve cover is sealed where indicated by the arrow. Do NOT damage it.