Standard Multi-Outdoor-Unit Combinations ≤20 Hp And Free Multi-Outdoor-Unit Combinations - Daikin VRV IV+ Installer And User Reference Manual

18.1.7 Standard multi-outdoor-unit combinations ≤20 HP and free multi-outdoor-unit
combinations
Connection with only VRV DX indoor units
REYQ8~20+REMQ5U7Y1B
VRV IV+ heat recovery
4P561154-1A – 2020.10
Pipe
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
a
4
b
a Outdoor unit
b VRV DX indoor unit
c Multi BS unit
d BS unit
e VRV DX indoor unit
Pipe
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
Maximum length (actual/equivalent)
"To select the piping size" [ 4 71].
1
c
3
b
e
Maximum length (actual/equivalent)
4
"To select the piping size" [ 71].
18 Piping installation
|
10 m/13 m
1000 m/—
5
2
d
e
(a)
135 m/160 m
(b)
40 m/—
10 m/13 m
500 m/—
Installer and user reference guide
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