Pipe Bending Guidelines; Using The Stop Valve And Service Port - Daikin VRV 5-S User Reference Manual

18 | Piping installation

18.2.3 Pipe bending guidelines

18.2.4 Using the stop valve and service port

To handle the stop valve
To open the stop valve
Installer and user reference guide
96
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.
Use a pipe bender for bending. All pipe bends should be as gentle as possible
(bending radius should be 30~40 mm or larger).
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
a Service port and service port cover
b Stop valve
c Field piping connection
d Dust cap
d a b
e c
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.
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
a
b
d
"Tightening
4
torques" [ 97]).
RXYSA8~12AMY1B
VRV 5-S system air conditioner
4P752782-1A – 2024.02