Daikin VRV 5 RXYA8A7Y1B Installer And User Manual page 119

RYMA5+RXYA8~20A7Y1B
VRV 5 heat pump
4P749918-1 – 2023.12
Model
SV8A
Metric piping. When using metric piping, replace the weight factors in the formula
by the ones from the following table:
Inch piping
Piping
Ø6.4 mm
Ø9.5 mm
Ø12.7 mm
Ø15.9 mm
Ø19.1 mm
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 Maximum
units
VRV DX 64
only
VRV DX + 64
AHU
AHU only —
(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.
Weight factor
0.020
0.053
0.10
0.16
0.23
(a) (b)
Total CR Maximum total
indoor unit
capacity
50~130%
50~110%
(d)
75~110%
19 Charging refrigerant
|
Parameter C
0.9 kg
Metric piping
Piping Weight factor
Ø6 mm
Ø10 mm
Ø12 mm
Ø15 mm
Ø16 mm
Ø19 mm
CR per type
VRV DX
650 50~130%
550 50~110%
550 —
Installer and user reference guide
0.016
0.058
0.088
0.14
0.16
0.22
(c)
AHU
—
0~60%
(d)
75~110%
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