To Charge Refrigerant: Flow Chart; To Charge Refrigerant - Daikin VRV 5 REYA8A7Y1B Installer And User Manual

19 | Charging refrigerant

19.5 To charge refrigerant: Flow chart

For more information, see
Step 1
Calculate additional refrigerant charge amount: R (kg)
Step 2+3
• Close valve A
• Open valve B to the liquid line
• Execute pre-charging amount: Q (kg)
Step 4a
Close valve B
Step 5
• Connect valve A to the refrigerant charge port (d)
• Open all outdoor unit stop valves
Step 6
Activate field setting [2-20]=1
Unit will start manual refrigerant charging operation.
Step 7
• Open valve A
• Charge remaining amount of refrigerant P (kg)
R=Q+P
Step 8
• Close valve A
• Push BS3 to stop manual charging
• Charging is finished
• Fill in the amount on the additional refrigerant charge label
• Input the additional refrigerant amount via setting [2-14]
• Go to test run

19.6 To charge refrigerant

Installer and user reference guide
110
"19.6 To charge refrigerant" [
Q<R
To speed up the refrigerant charging process, it is in case of larger systems
recommended to first pre-charge a portion of refrigerant through the liquid line
before proceeding with the manual charging. It can be skipped, but charging will
take longer then.
4
110].
p < p >
A
R32
Q=R
Step 4b
• Close valve B
• Charging is finished
• Fill in the amount on the additional refrigerant charge
label
• Input the additional refrigerant amount via setting [2-14]
• Go to test run
B
d
Step 4c
Refrigerant overcharge happened, recover
refrigerant to reach Q=R
REMA5+REYA8~20A7Y1B
4P687640-1 – 2022.07
Q>R
VRV 5 heat recovery