Daikin VRV IV+ User Manual

18 | Piping installation
Installer and user reference guide
79
REYQ8~20+REMQ5U7Y1B
VRV IV+ heat recovery
4P561154-1A – 2020.10
Pipe Maximum length (actual/equivalent)
In case of a multi-outdoor setup:
longest pipe from the outdoor unit to
the last multi-outdoor piping branch (4)
10m/13m
Total pipe length 1000m/—
(a) If the equivalent piping length is more than 90m, size up the main liquid piping
according to "To select the piping size"[471].
18.1.7 Standard multi-outdoor-unit combinations ≤20 HP and free multi-outdoor-unit
combinations
Connection with only VRV DX indoor units
H3
1 5
H1
H2
3 2
4
a
b b
c
d
e
e
a Outdoor unit
b VRV DX indoor unit
c Multi BS unit
d BS unit
e VRV DX indoor unit
Pipe Maximum length (actual/equivalent)
Longest pipe from the outdoor unit or
the last multi-outdoor piping branch
(1+2, 1+3, 1+5)
135m/160m
(a)
Longest pipe after the first branch (2, 3,
5)
40m/—
(b)
In case of a multi-outdoor setup:
longest pipe from the outdoor unit to
the last multi-outdoor piping branch (4)
10m/13m
Total pipe length 500m/—
(a) If the equivalent piping length is more than 90m, size up the main liquid piping
according to "To select the piping size"[471].

Daikin VRV IV+ Specifications

General

Brand	Daikin
Model	VRV IV+
Category	Heat Pump
Language	English