4 Preparation
Installation manual
14
RWEQ96~432TAYD
∗
+ RWEQ96~432TATJ
∗
VRV W T-Series water-cooled system air conditioner
4 .3 .5
Single module and standard multi-
outside-unit combinations
In case of heat pump mode
Connection with indoor units and air handling units
4
H1
H3
H2
a
a
b
b
2
5
1
3
a
Outside unit
b
VRV indoor unit
Pipe
Maximum length (actual/equivalent)
Longest pipe from the
outside unit to the last indoor
unit (1+3, 1+2+5)
540 ft (165 m)/623 ft (190 m)
(a)
Longest pipe after the first
branch (3, 2+5)
295 ft (90 m)
(b)
/—
In case of a multi-outside
setup: longest pipe from the
outside unit to the last multi-
outside piping branch (4)
33 ft (10 m)/43 ft (13 m)
Total pipe length (1+2+3+5)
980 ft (300 m)/—
(c)
The actual piping length from
each indoor units to the
nearest refrigerant branch kit
130 ft (40 m)/—
(a) If the equivalent piping length is more than 295 ft (90 m),
size up the main liquid piping according to "4.3.2 To select
the piping size" on page 11.
(b) If actual piping length of indoor units where difference from
the indoor unit nearest to the outside unit is more than 130 ft
(40 m), please size up according to "4.3.7 Piping length
requirements" on page 15.
(c) In the case of an outside units multi system, "outside unit"
should be read as the "first outside unit multi connection
piping kit", seen from the indoor units side.
In case of heat recovery mode
Connection with only indoor units
H3
1
5
H1
3
2
4
a
b
b
c
d
b
b
H2
a
Outside unit
b
VRV indoor unit
c
Multi branch selector unit
d
Single branch selector unit
Multi branch selector box is to be considered as a branch, a single
branch selector box is not considered as a branch.
Pipe
Maximum length (actual/equivalent)
Longest pipe from the
outside unit to the last indoor
unit (1+2, 1+3, 1+5)
540 ft (165 m)/623 ft (190 m)
(a)
Longest pipe after the first
branch (3, 2, 5)
295 ft (90 m)
(b) (c)
/—
In case of a multi-outside
setup: longest pipe from the
outside unit to the last multi-
outside piping branch (4)
33 ft (10 m)/43 ft (13 m)
Total pipe length (1+2+3+5)
980 ft (300 m)/—
(d) (e)
The actual piping length from
each indoor units to the
nearest refrigerant branch kit
130 ft (40 m)
(c)
/—
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2020/07/29 16:16:40
