18
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Piping installation
Installer and user reference guide
90
REYQ8~20+REMQ5U7Y1B
VRV IV+ heat recovery
4P561154-1A – 2020.10
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.
▪
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.
To handle the service port
▪
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.
Tightening torques
Stop valve size
(mm)
Tightening torque (N•m) (when opening or closing)
Valve body
Hexagonal wrench
Service port
Ø9.5
5~7
4 mm
10.7~14.7
Ø12.7
8~10
Ø15.9
14~16
6 mm
Ø19.1
19~21
8 mm
Ø25.4
Summary of Contents for REMQ5U7Y1B
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