Daikin VRV IV W+ Series Installer And User Reference Manual page 74

18 | Piping installation
In case of heat recovery system
Connection with VRV DX indoor units and air handling units
Installer and user reference guide
74
a
a
4
3
b
b
a Outdoor unit
b VRV DX indoor unit
c Branch selector unit (BS*)
d Multi branch selector unit (BS*)
e EKEXV kit
f Air handling unit (AHU)
Longest pipe from the outdoor unit or the last multi-
outdoor piping branch (1+2, 1+3, 1+5)
Longest pipe after the first branch (2, 3, 5)
In case of a multi-outdoor setup: longest pipe from
the outdoor unit to the last multi-outdoor piping
branch (4)
Total pipe length
(a) If the equivalent piping length is more than 90 m, size up the main liquid piping
according to
1
c
d
e
f
b
Pipe
"18.1.3 To select the piping size" [
5
2
d
e
f
Maximum length (actual/
equivalent)
165 m/190 m
40 m/—
10 m/13 m
300 m/—
4 65].
VRV IV water-cooled system air conditioner
4P452191-1B – 2020.10
(a)
RWEYQ8~14T9Y1B