Daikin VRV 5-S - Pipe Bending Guidelines; Using the Stop Valve and Service Port

18 | Piping installation
Installer and user reference guide
96
RXYSA8~12AMY1B
VRV 5-S system air conditioner
4P752782-1A – 2024.02
NOTICE
Do NOT open the refrigerant stop valve before checking the refrigerant piping. When
you need to charge additional refrigerant it is recommended to open the refrigerant
stop valve after charging.
18.2.3 Pipe bending guidelines
Use a pipe bender for bending. All pipe bends should be as gentle as possible
(bending radius should be 30~40 mm or larger).
18.2.4 Using the stop valve and service port
To handle the stop valve
Take the following guidelines into account:
▪ The gas and liquid stop valves are factory closed.
▪ Make sure to keep all stop valves open during operation.
▪ 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 Dust cap
a b
c
d
e
a Service port
b Dust cap
c Hexagon hole
d Shaft
e Seal
▪ Do NOT apply excessive force to the stop valve. Doing so may break the valve
body.
To open the stop valve
1 Remove the dust cap.
2 Insert a hexagon wrench into the stop valve.
3 FULLY turn the stop valve counterclockwise and tighten until the correct
tightening torque value is achieved (see "Tightening torques"[497]).