6 Installation
Installer reference guide
19
RZQG7 RZQG71~12 RZQG140L7Y1L
Split system air conditioners
4P473074-1A – 2019.04
6.7.3
Precautions when connecting the
electrical wiring
INFORMATION
Also read the precautions and requirements in the
following chapters:
▪ General safety precautions
▪ Preparation
DANGER: RISK OF ELECTROCUTION
WARNING
ALWAYS use multicore cable for power supply cables.
CAUTION
For use of units in applications with temperature alarm
settings it is recommended to foresee a delay of 10
minutes for signalling the alarm in case the alarm
temperature is exceeded. The unit may stop for several
minutes during normal operation for "defrosting the unit", or
when in "thermostat stop" operation.
6.7.4
Guidelines when connecting the electrical
wiring
Keep the following in mind:
▪ If stranded conductor wires are used, install a round crimp-style
terminal on the end of the wire. Place the round crimp-style
terminal on the wire up to the covered part and fasten the terminal
with the appropriate tool.
b
a
a
Stranded conductor wire
b
Round crimp-style terminal
▪ Use the following methods for installing wires:
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
Item
Tightening torque (N•m)
M4 (earth)
1.2~1.4
M5 (X1M)
2.0~3.0
M5 (earth)
2.4~2.9
6.7.5
Specifications of standard wiring
components
Component
V1
Y1
71
71
100
125+140
Power supply
cable
MCA
(a)
20.6 A 14.0 A 21.0 A
22.5 A
Voltage
230 V
400 V
Phase
1~
3N~
Frequency
50 Hz
Wire sizes
Must comply with applicable
legislation
Interconnection cables
Minimum cable section of 2.5
mm² and applicable for 230 V
Recommended field fuse
25 A
16 A
25 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).
6.7.6
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
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 cable and power supply as follows:
c
a
d
e
1~50 Hz
220-240 V
3N~50 Hz
380-415 V
V1
Y1
L1 L2 L3
L1 L2 L3
N
b
b
a
Interconnection cable
b
Power supply cable
c
Earth leakage circuit breaker
d
Fuse
e
User interface
