Daikin VRV IV+ Installation And Operation Manual page 26

14 Piping installation
500
8 HP 12 HP
200 300
125 125
#
1 Determine the connection ratio:
▪ Total outdoor unit capacity class = 500
▪ Total indoor unit capacity class = 550
=> CR≥100%
2 Determine parameter C:
▪ N=5
▪ 8 HP: N≥4 => C1=N×0.1=5×0.1 kg
▪ 12 HP: N<6 => C2=0 kg
=> C=C1+C2=0.5 kg
Metric piping. When using metric piping, replace the weight factors
in the formula by the ones from the following table:
Inch piping
Piping Weight factor
Ø6.4 mm 0.022
Ø9.5 mm 0.059
Ø12.7 mm 0.12
Ø15.9 mm 0.18
Ø19.1 mm 0.26
Ø22.2 mm 0.37
Installation and operation manual
26
550
125 125 50
Action
Metric piping
Piping Weight factor
Ø6 mm 0.018
Ø10 mm 0.065
Ø12 mm 0.097
Ø15 mm 0.16
Ø16 mm 0.18
Ø18 mm 0.24
Ø22 mm 0.35
RYYQ+RYMQ+RXYQ8~20U7Y1B
VRV IV+ heat pump
4P546220-1C – 2020.10