To Connect The Refrigerant Piping To The Outdoor Unit - Daikin RXP25N5V1B Installer's Reference Manual

7 | Piping installation
To open/close the stop valve
To handle the stem cap
To handle the service cap

7.2.7 To connect the refrigerant piping to the outdoor unit

Installer reference guide
38
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.
▪ After handling the service port, tighten the service port cap, and check for
refrigerant leaks.
Item
Service port cap
▪ Piping length. Keep field piping as short as possible.
▪ Piping protection. Protect the field piping against physical damage.
Tightening torque (N∙m)
21.6~27.4
21.6~27.4
Tightening torque (N∙m)
10.8~14.7
RXP20~35N5V1B+ARXP20~35N5V1B
R32 split series
4P519439-22V – 2022.10