Daikin VRV IV+ Installer And User Reference Manual page 89

To open the stop valve
REYQ8~20+REMQ5U7Y1B
VRV IV+ heat recovery
4P561154-1A – 2020.10
c
a Service port and service port cover
b Stop valve
c Field piping connection
d Dust cap
d a b
c
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.
1 Remove the stop valve cover.
2 Insert a hexagon wrench into the stop valve and turn the stop valve
counterclockwise.
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.
a
b
d
18 Piping installation
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Installer and user reference guide
89