Daikin RXYSQ4T8VB Series Installer And User Reference Manual page 86

18 | Piping installation
Installer and user reference guide
86
The determined additional refrigerant
amount is reached
Too much refrigerant is charged
The determined additional refrigerant
amount is not reached yet
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 >
A
b
R410A
a c
a Weighing scales
b Refrigerant R410A tank (siphon system)
c Vacuum pump
d Refrigerant charge port
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
Commissioning into account.
8 Turn on the power of the indoor units and outdoor unit.
If
Disconnect the manifold from the
liquid line.
You do not have to perform the
"Charging refrigerant (in manual
additional refrigerant charge mode)"
instructions.
Recover refrigerant.
Disconnect the manifold from the
liquid line.
You do not have to perform the
"Charging refrigerant (in manual
additional refrigerant charge mode)"
instructions.
Disconnect the manifold from the
liquid line.
Continue with the "Charging
refrigerant (in manual additional
refrigerant charge mode)"
instructions.
d
Then
d
4
"20 Configuration" [
RXYSQ4~6T8V/YB
VRV IV-S system air conditioner
4P482277-1B – 2020.10
99] and