-
225
-
4) Between master and slave indoor units, connect between the same numbers
, ,
and
,
,
on the respective terminal
blocks.
Power cable, indoor-outdoor connecting wires
Always perform grounding system installation work
with the power cord unplugged.
CAUTION
Always use an earth leakage circuit breaker designed for
inverter circuits to prevent a faulty operation.
Notes (1) The specifi cations shown in the above table are for units without heaters. For units with heaters, refer to the installation instructions or the construc-
tion instructions of the indoor unit.
(2) Switchgear or circuit breaker capacity which is calculated from MAX. over current should be chosen along the regulations in each country.
(3)
The
cable
specifi cations are based on the assumption that a metal or plastic conduit is used with no more than three cables contained in a conduit and
a voltage drop is 2%. For an installation falling outside of these conditions, please follow the internal cabling regulations. Adapt it to the regulation
in effect in each country.
(d) Wiring diagram
This diagram shows wiring for a 3 phase model.
Earth leakage breaker
(Harmonic resistant type)
1 phase model
Remote controller
Indoor unit
Outdoor unit
Outdoor unit
Indoor unit
Remote controller
3 phase model
Switchgear or circuit breaker
Switchgear or circuit breaker
Earth leakage breaker
(Harmonic resistant type)
Model
FDCVA151
FDCVA201
FDCVA251
FDCVA302
FDCVA402
FDCVA502
FDCVA602
FDCVA402
FDCVA502
FDCVA602
FDCVA802
FDCVA1002
19
20
20
25
24
28
25
23
20
28
φ
1.6 mm
φ
1.6 mm
15
16
17
22
23
11
12
13
17
20
2.0
3.5
5.5
3.5
5.5
φ
1.6 mm
×
3
Power source
1 phase
220-240V
50Hz/
220V 60Hz
Power cable
thickness
(mm
2
)
Grounding wire
thickness
Max. over
current
(A)
Indoor-outdoor
wire thickness
×
number
Cable length
(m)
3 phase
380-415V 50Hz/
380V 60Hz
L1
1
2
3
L2 L3 N
1
X Y Z
2/N 3
X Y Z
1
X Y Z
2/N 3
1
X Y Z
2/N 3
1
X Y Z
2/N 3
Outdoor unit
Circuit breaker
Earth leakage breaker
Indoor unit
Remote
controller
Master
Slave a
Slave b
Slave c
For twin
units
For triple
units
For double
twin units
Model
Power source
Power cable
thickness
(mm
2
)
Max. over
current
(A)
Cable length
(m)
Grounding wire
thickness
Indoor-outdoor
wire thickness
×
number
FDCVA402
1 phase
220-240V
50Hz/
220V 60Hz
3.5
18
16
φ
1.6 mm
φ
1.6 mm×3
FDCVA502
5.5
26
18
FDCVA602
8
28
26
FDCVA402
3 phase
380-415V
50Hz/
380V 60Hz
3.5
12
25
FDCVA502
16
20
FDCVA602
18
16
FDCVA802
5.5
21
26
FDCVA1002
25
22
At the connection with the duct type indoor unit.
