Daikin ARXF20C5V1B Installer's Reference Manual page 35

To open/close the stop valve
To handle the stem cap
To handle the service cap
(A)RXF20~42C5V1B
R32 split series
4P519439-10J – 2021.06
▪ ALWAYS make sure to secure the stop valve with a spanner, then loosen or
tighten the flare nut with a torque wrench. Do NOT place the spanner on the
stem cap, as this could cause a refrigerant leak.
a
b
a Spanner
b Torque wrench
▪ When it is expected that the operating pressure will be low (e.g. when cooling
will be performed while the outside air temperature is low), sufficiently seal the
flare nut in the stop valve on the gas line with silicon sealant to prevent freezing.
Silicon sealant, make sure there is no gap.
1 Remove the stop valve cover.
2 Insert a hexagon wrench (liquid side: 4 mm, gas side: 4 mm) into the valve
stem and turn the valve stem:
Counterclockwise to open
Clockwise to close
3 When the stop valve CANNOT be turned any further, stop turning.
4 Install the stop valve cover.
Result: The valve is now open/closed.
▪ The stem cap is sealed where indicated with the arrow. Do NOT damage it.
▪ After handling the stop valve, tighten the stem cap, and check for refrigerant
leaks.
Item
Stem cap, liquid side
Stem cap, gas side
▪ ALWAYS use a charge hose equipped with a valve depressor pin, since the service
port is a Schrader type valve.
7 Piping installation
|
Tightening torque (N∙m)
21.6~27.4
21.6~27.4
Installer reference guide
35