Daikin VRV IV+ RXYTQ8U7YF User Manual

17 | Piping installation
Installer and user reference guide
88
RXYTQ
VRV IV+ heat pump for high ambient temperatures
4P561157-1B – 2021.11
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 the manual charge.
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.
▪ Perform the test procedure described in "20Commissioning"[4118].
17.4.6 Step 6: To manually charge refrigerant
The remaining additional refrigerant charge can be charged by operating the
outdoor unit by means of the manual refrigerant charge operation mode:
1 Take all the precautions mentioned in "19 Configuration" [4 100] and
"20Commissioning"[4118] into account.
2 Turn on the power of the indoor units and outdoor unit.
3 Activate outdoor unit setting [2‑20]=1 to start manual refrigerant charge
mode. Refer to "19.2.8Mode 2: Field settings"[4107] for details.
Result: The unit will start operation.
4 Valve A can be opened. Charging of remaining additional refrigerant can be
done.
5 When the remaining calculated additional refrigerant amount is added, close
valve A and push BS3 to stop the manual refrigerant charging procedure.
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.
6 Perform the test procedure as described in "20Commissioning"[4118].
INFORMATION
▪ When a malfunction is detected during the procedure (e.g., in case of closed stop
valve), a malfunction code will be displayed. In that case, refer to "17.4.7 Error
codes when charging refrigerant" [4 89] and solve the malfunction accordingly.
Resetting the malfunction can be done by pushing BS3. The procedure can be
restarted from "17.4.6Step 6: To manually charge refrigerant"[488].
▪ Aborting the manual refrigerant charge is possible by pushing BS3. The unit will
stop and return to idle condition.

Daikin VRV IV+ RXYTQ8U7YF Specifications

General

Brand	Daikin
Model	VRV IV+ RXYTQ8U7YF
Category	Heat Pump
Language	English