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8. Electric wiring
(1) Selection of size of power supply and interconnecting wires.
Precautions for Electric wiring
Electric wiring work should be conducted only by authorized personnel.
Do not connect more than three wires to the terminal block. Always use round
type crimped terminal lugs with insulated grip on the ends of the wires.
Use copper conductor only.
Select wire sizes and circuit protection from table below. (This table shows 20 m
length wires with less than 2% voltage drop.)
DANGER OF BODILY INJURY OR DEATH
TURN OFF ELECTRIC POWER AT CIRCUIT BREAKER OR POWER
SOURCE BEFORE MAKING ANY ELECTRIC CONNECTIONS.
GROUND CONNECTIONS MUST BE COMPLETED BEFORE MAKING
LINE VOLTAGE CONNECTIONS.
WARNING!
20
Installation Procedure
Electric wiring
If the supply cord is damaged, it must be replaced by the manufacturer or its
service agent or a similar qualified person.
If the fuse of control box is broken, please change it with the type of T25A/450VAC;
if the fuse of control PC board is broken, please change it with the type of
T3.15A/250VAC.
The wiring method should be in line with the local wiring standard.
The power cable and connecting cable should be self-provided.
For AU122AEERA,AU182AFERA, the power cable should be H05RN-F 3G 2.5mm
2
.
For AU242AGERA, AU282/362AHERA, the power cable should be H05RN-F 3G 4.0mm
2
For AU422/522AIERA, the power cable should be H05RN-F 3G 6.0mm
2
For AU36NAHERA, AU42NAIERA the power cable should be H07RN-F 5G 2.5mm
2
For AU52NAIERA, the power cable should be H07RN-F 5G 4.0mm
2
.
The connecting cable should be H05RN-F 4G 0.75mm
2
.
All the cables shall have got the European authentication certificate. During
installation, when the connecting cables break off, it must be assured that the
grouding wire is the last one to be broken off.
The breaker of the air conditioner should be all-pole switch; and the distance
between its two contacts should not be no less than 3mm. Such means for
disconnection must be incorporation in the fixed wiring.
The distance between its two terminal blocks of indoor unit and outdoor unit
should not be over 5m. If exceeded, the diameter of the wire should be enlarged
according to the local wiring standard.
A leakage breaker must be installed.
30mA
Item
Model
Phase
1
Switch breaker
(A)
Circuit breaker
Overcurrent protector
rated capacity (A)
Power source
wire size
(minimum)
40 26 2.5mm
2
1
60 40 4.0mm
2
Switch
breaker
Earth leakage breaker
Leak
current
40A 30mA
60A
AU122AEERA
AU182AFERA
AU242AGERA
AU282AHERA
AU362AHERA
AU422AIERA
AU522AIERA
AU36NAHERA
AU42NAIERA
AU52NAIERA
1
60 40 6.0mm
2
60A 30mA
3 30 20 2.5mm
2
30A 30mA
3 30 20 4.0mm
2
30A 30mA