To Remove The Spun Pipes - Daikin VRV IV W+ Series Installer And User Reference Manual

To handle the service port
Tightening torques

18.3.10 To remove the spun pipes

RWEYQ8~14T9Y1B
VRV IV water-cooled system air conditioner
4P452191-1B – 2020.10
▪ 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
NOTICE
In case of heat pump system, do NOT remove the spun pipe of the suction gas stop
valve.
WARNING
Any gas or oil remaining inside the stop valve may blow off the spun piping.
If these instructions are NOT followed correctly it may result in property damage or
personal injury, which may be serious depending on the circumstances.
Use the following procedure to remove the spun piping:
1 Make sure that the stop valves are fully closed.
2 Connect the vacuuming/recovery unit through a manifold to the service port
of all stop valves.
Tightening torque N•m (turn clockwise to close)
Shaft
Hexagonal
wrench
4 mm
6 mm
8 mm
18 Piping installation
|
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
Installer and user reference guide
89