To Charge Refrigerant: Flow Chart - Daikin VRV IV+ Installer And User Reference Manual

18 | Piping installation

18.4.4 To charge refrigerant: Flow chart

For more information, see
Pre-charging refrigerant
Step 1
Calculate additional refrigerant charge amount: R (kg)
Step 2+3
• Close valves C, D and A
• Open valve B to the liquid line
• Execute pre-charging amount: Q (kg)
• Disconnect the manifold from the gas line and the high pressure/low
pressure gas line
R=Q
Step 4a
• 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
Installer and user reference guide
100
"To charge refrigerant" [
Refrigerant overcharge happened, recover
refrigerant to reach R=Q
4
102].
p <
A
N2 R410A
R<Q
C D
p >
B
R>Q
Step 4b
Close valve B
Continued on next page >>
REYQ8~20+REMQ5U7Y1B
VRV IV+ heat recovery
4P561154-1A – 2020.10