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Installation
Installer and user reference guide
71
RYYQ+RYMQ+RXYQ8~20U7Y1B
VRV IV+ heat pump
4P546228-1A – 2019.10
Charging refrigerant
5
After pre-charging, connect valve A to the refrigerant charge port and charge
the remaining additional refrigerant through this port. Open all outdoor unit
stop valves. At this point, valve A must remain closed!
p< p>
R410A
a
c
d
b
A
a
Weighing scales
b
Refrigerant R410A tank (siphon system)
c
Vacuum pump
d
Refrigerant charge port
A
Valve A
INFORMATION
For a multi outdoor unit system, it is not required to connect all charge ports to a
refrigerant tank.
The refrigerant will be charged with ±22 kg in 1 hour time at an outdoor temperature
of 30°C DB or with ±6 kg at an outdoor temperature of 0°C DB.
If you need to speed up in case of a multiple outdoor system, connect the refrigerant
tanks to each outdoor unit.
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.
▪
After adding the refrigerant, do not forget to close the lid of the refrigerant
charging port. The tightening torque for the lid is 11.5 to 13.9 N•m.
▪
In order to ensure uniform refrigerant distribution, it may take the compressor
±10 minutes to start up after the unit has started operation. This is not a
malfunction.
6
Proceed with one of the following:
6a
"6.7.6 Step 6a: To automatically charge refrigerant"
6b
"6.7.7 Step 6b: To manually charge refrigerant"
INFORMATION
After charging refrigerant:
▪
Record the additional refrigerant amount on the refrigerant label provided with
the unit and attach it to the backside of the front panel.
▪
Input the additional refrigerant amount into the system via setting [2‑14].
▪
Perform the test procedure described in
108].
Содержание VRV IV+
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Страница 168: ...4P546228 1A 2019 10 Copyright 2018 Daikin Verantwortung für Energie und Umwelt ...