Daikin VRV IV W+ Series Installer And User Reference Manual page 75

Connection with VRV DX indoor units and Hydrobox units
RWEYQ8~14T9Y1B
VRV IV water-cooled system air conditioner
4P452191-1B – 2020.10
a
4
b
a Outdoor unit
b VRV DX indoor unit
c Multi branch selector unit (BS*)
d Low temperature (LT) Hydrobox unit
e High temperature (HT) Hydrobox unit
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 "18.1.3 To select the piping
1
c
3
b
d
Pipe
size" [
18 Piping installation
|
2
5
e
Maximum length (actual/
equivalent)
120 m/140 m
40 m/—
10 m/13 m
300 m/—
4
65].
Installer and user reference guide
(a)
75