Daikin VRV 5-S Series - 20 Electrical Installation; 20.1 About Connecting Electrical Wiring; 20.1.1 Precautions for Electrical Wiring

19 | Charging refrigerant
Installer and user reference guide
101
RXYSA4~6A7V/Y1B
VRV 5-S system air conditioner
4P600330-1D – 2023.02
If Then
The determined additional refrigerant
amount is not reached yet
Disconnect the manifold from the
liquid line.
Continue with the "Charging
refrigerant (in manual additional
refrigerant charge mode)"
instructions.
Charging refrigerant (in manual additional refrigerant charge mode)
The remaining additional refrigerant charge can be charged by operating the
outdoor unit by means of the manual additional refrigerant charge mode.
5 Connect as shown. Make sure valve A is closed.
p
<
p
>
R32
a c
d e
b
A
d
e
a Weighing scales
b Refrigerant R32 tank (siphon system)
c Vacuum pump
d Refrigerant charge port (heat exchanger)
e Refrigerant charge port (suction)
A Valve A
NOTICE
The refrigerant charging port is connected to the piping inside the unit. The unit's
internal piping is already factory charged with refrigerant, so be careful when
connecting the charge hose.
6 Open all outdoor unit stop valves. At this point, valve A must remain closed!
7 Take all the precautions mentioned in "22 Configuration" [4 121] and
"23Commissioning"[4139] into account.
8 Turn on the power of the indoor units and outdoor unit.
9 Activate setting [2‑20] to start the manual additional refrigerant charge mode.
For details, see "22.2.8Mode 2: field settings"[4128].
Result: The unit will start operation.
INFORMATION
The manual refrigerant charge operation will automatically stop within 30 minutes. If
charging is not completed after 30 minutes, perform the additional refrigerant
charging operation again.