Daikin VRV IV Installer And User Reference Manual page 88

18 | Piping installation
To close the stop valve
To handle the stop valve cover
To handle the service port
Tightening torques
Installer and user reference guide
88
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.
▪ 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.
▪ 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.
Stop valve size
(mm)
Valve body
Ø9.5 5.4~6.6
Ø12.7 8.1~9.9
Ø15.9 13.5~16.5
Ø19.1 27.0~33.0
Ø25.4
Tightening torque N•m (turn clockwise to close)
Shaft
Hexagonal
wrench
4 mm
6 mm
8 mm
Cap (valve lid) Service port
13.5~16.5 11.5~13.9
18.0~22.0
23.0~27.0
22.5~27.5
RXMLQ8 + RXYLQ10~14T7Y1B*
VRV IV system air conditioner
4P543427-1A – 2020.10