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Piping installation
Installer and user reference guide
89
RYYQ+RYMQ+RXYQ
VRV IV+ heat pump
4P546228-1C – 2021.11
3
When the stop valve cannot be turned any further, stop turning.
4
Install the stop valve cover.
Result:
The valve is now open.
To fully open the Ø19.1~Ø25.4 mm stop valve, turn the hexagonal wrench until a
torque between 27 and 33 N•m is achieved.
Inadequate torque may cause leakage of refrigerant and breakage of the stop valve
cap.
NOTICE
Pay attention that mentioned torque range is applicable for opening
Ø19.1~Ø25.4 mm stop valves only.
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.
Summary of Contents for RYYQ8U7Y1B
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