Single Outdoor Units And Standard Multi-Outdoor-Unit Combinations - Daikin VRV IV W+ Series Installer And User Reference Manual

18.1.6 Single outdoor units and standard multi-outdoor-unit combinations

In case of heat pump system
Connection with VRV DX indoor units and air handling units
RWEYQ8~14T9Y1B
VRV IV water-cooled system air conditioner
4P452191-1B – 2020.10
(c) If the outdoor unit is connected to VRV DX indoor units only, the height difference
between indoor units (H2) can be increased to 30 m. In all other cases, the H2 is
limited to 15 m.
If
The outdoor unit is
positioned higher than the
indoor units
The outdoor unit is
positioned lower than the
indoor units
a
a
1
4
3
b
a Outdoor unit
b VRV DX indoor unit
c EKEXV kit
d Air handling unit (AHU)
▪ Minimum connection ratio: 80%
▪ Size up the liquid piping (refer to
4
the piping size" [ 65] for more information)
▪ Activate the outdoor unit setting. Refer to the
service manual for more information.
▪ Minimum connection ratio varies according to the
height difference between outdoor and indoor
units:
- 40~60 m: 80%
- 60~65 m: 90%
- 65~80 m: 100%
- 80~90 m: 110%
▪ Size up the liquid piping (refer to
4
the piping size" [ 65] for more information)
▪ Activate the outdoor unit setting. Refer to the
service manual for more information.
▪ No technical cooling
2 6
5
c
b
d
18 Piping installation
|
Then
"18.1.3 To select
"18.1.3 To select
Installer and user reference guide
71