Daikin VRV 5 - Page 111

19 | Charging refrigerant
Installer and user reference guide
111
RXYSA8~12AMY1B
VRV 5-S system air conditioner
4P752782-1A – 2024.02
Model Parameter A
SV4A 0.5kg
SV6A 0.7kg
SV8A 0.9kg
Metric piping. When using metric piping, replace the weight factors in the formula
by the ones from the following table:
Inch piping Metric piping
Piping Weight factor Piping Weight factor
Ø6.4mm 0.020 Ø6mm 0.016
Ø9.5mm 0.053 Ø10mm 0.058
Ø12.7mm 0.10 Ø12mm 0.088
Ø15.9mm 0.16 Ø15mm 0.14
Ø16mm 0.16
Connection ratio requirements. When selecting indoor units, the connection ratio
must comply with the following requirements. For more information, see the
technical engineering data.
Other combinations than those mentioned in the table are not allowed.
Indoor
units
Maximum
(a)
Total CR
(b)
Maximum total
indoor unit
capacity
CR per type
(c)
VRV DX AHU
VRV DX
only
64 50~130% 390 50~130% —
VRV DX +
AHU
64 50~110%
(d)
330 50~110% 0~60%
AHU only — 75~110%
(d)
330 — 75~110%
(d)
(a)
Maximum number allowed excluding SV units and including EKEXVA kits
(b)
Total CR = Total indoor unit capacity connection ratio
(c)
CR per type = Allowable capacity connection ratio per indoor unit type
(d)
Additional restrictions might apply for connection ratio lower than 75% (65~110%). Please
refer to the EKEA+EKEXVA manual.