Daikin VRV IV+ - Page 99

18 | Piping installation
Installer and user reference guide
99
REYQ8~20+REMQ5U7Y1B
VRV IV+ heat recovery
4P561154-1A – 2020.10
Inch piping Metric piping
Piping Weight factor Piping Weight factor
Ø6.4mm 0.022 Ø6mm 0.018
Ø9.5mm 0.059 Ø10mm 0.065
Ø12.7mm 0.12 Ø12mm 0.097
Ø15.9mm 0.18 Ø15mm 0.16
Ø16mm 0.18
Ø19.1mm 0.26 Ø18mm 0.24
Ø22.2mm 0.37 Ø22mm 0.35
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)
CR per type
(c)
Type CR
VRV DX 64 50~130% VRV DX 50~130%
VRV DX
without BS unit
(cooling-only)
(d)
0~50%
VRV DX +
Hydrobox
32 50~200%
(e)
VRV DX 50~110%
VRV DX
without BS unit
(cooling-only)
(d)
0~50%
LT + HT
Hydrobox
0~100%
VRV DX + AHU 64 50~110% VRV DX 50~110%
VRV DX
without BS unit
(cooling-only)
(d)
0~50%
AHU 0~60%
(a)
Maximum number allowed excluding BS units and EKEXV kits
(b)
Total CR = Total indoor unit capacity connection ratio
(c)
CR per type = Allowable capacity connection ratio per indoor unit type
(d)
Cooling-only VRV indoor units cannot be combined with HT Hydrobox units
(e)
The total capacity of VRV DX indoor units and LT Hydrobox units is maximum 130%