6 Installation
Installer reference guide
24
250D7Y1B
Sky Air Advance-series
4P573383-1 – 2019.04
Wire type
Installation method
Single-core wire
c b
c
a
a
A
AA´
A´
a
Curled single-core wire
b
Screw
c
Flat washer
Stranded conductor
wire with round
crimp-style terminal
c b
b
a
c
a
B
B
a
Terminal
b
Screw
c
Flat washer
O
Allowed
X
NOT allowed
Tightening torques
Item
Tightening torque (N•m)
M4 (X1M)
1.2~1.8
M4 (earth)
1.2~1.4
M5 (X1M)
2.0~3.0
M5 (earth)
2.4~2.9
NOTICE
If limited space is available at the wire terminal, use
bended crimp-style ring terminals.
6.8.5
Specifications of standard wiring
components
Component
RZA200
RZA250
Power supply
cable
MCA
(a)
18.6 A
19.9 A
Voltage range
380~415 V
Phase
3N~
Frequency
50 Hz
Wire sizes
Must comply with applicable
legislation
Interconnection cables
H05VV-U4G2.5
Recommended field fuse
20 A
Earth leakage circuit breaker
Must comply with applicable
legislation
(a)
MCA=Minimum circuit ampacity. Stated values are
maximum values (see electrical data of combination with
indoor units for exact values).
6.8.6
To connect the electrical wiring on the
outdoor unit
NOTICE
▪ Follow the wiring diagram (delivered with the unit,
located at the inside of the service cover).
▪ Make sure the electrical wiring does NOT obstruct
proper reattachment of the service cover.
1
Remove the service cover. See
13].
2
Strip insulation (20 mm) from the wires.
a
b
a
Strip wire end to this point
b
Excessive strip length may cause electrical shock or
leakage.
3
Connect the interconnection cables and power supply as
follows:
a
c
d
e
3N~ 50 Hz
380-415 V
L1 L2 L3
L1 L2 L3
N
b
a
a
a
I, II, III, IV
Pair, twin, triple, double twin
M, S
Master, slave
a
Interconnection cables
b
Power supply cable
c
Earth leakage circuit breaker
d
Fuse
e
User interface
INFORMATION
Some indoor units may need a separate power supply in
order to guarantee maximum capacity. See the installation
manual of the indoor unit.
c
d
a
d
b
a
Interconnection cable
b
Power supply cable
c
Earth
