-
31
＊
-
4. ELECTRICAL WIRING WORK
For details of electrical cabling, refer to the indoor unit installation manual.
CAUTION
Power cable, indoor-outdoor connecting wires
Always use an earth leakage circuit breaker designed for inverter circuits to
prevent a faulty operation.
●
Always perform grounding system installation work with the power cord unplugged.
Electrical installation work must be performed by an electrical installation service provider qualified by a power provider of the country.
Electrical installation work must be executed according to the technical standards and other regulations applicable to electrical installations in the country.
●
Do not use any supply cord lighter than one specified in parentheses for each type below.
- braided cord (code designation 60245 IEC 51),
- ordinary tough rubber sheathed cord (code designation 60245 IEC 53)
- flat twin tinsel cord (code designation 60227 IEC 41);
Use polychloroprene sheathed flexible cord (code designation 60245 IEC57) for supply cords of parts of appliances for outdoor use.
●
Ground the unit. Do not connect the grounding wire to a gas pipe, water pipe, lightning rod or telephone grounding wire.
If impropery grounded, an electric shock or malfunction may result.
●
A grounding wire must be connected before connecting the power cable. Provide a grounding wire longer than the power cable.
●
The installation of an impulse withstanding type earth leakage breaker is necessary. A failure to install an earth leakage breaker can result in an
acccident such as an electric shock or a fire.
●
Do not turn on the power until the electrical work is completeted.
●
Do not use a condensive capacitor for power factor improvement under any circumstances. (It dose not improve power factor, while it can cause
an abnormal overheat accident)
●
For power supply cables, use conduits.
●
Do not lay electronic control cables (remote control and signaling wires) and other cables together outside the unit. Laying them together can result
in the malfunctioning or a failure of the unit due to electric noises.
●
Fasten cables so that may not touch the piping, etc.
●
When cables are connected, make sure that all electrical components within the electrical component box are free of loose connector coupling or
terminal connection and then attach the cover securely.( Improper cover attachment can result in malfunctioning or a failure o fthe unit, if water
penetrates into the box.)
●
Always use a three-core cable for an indoor-outdoor connecting cable. Never use a shield cable.
L
Outdoor unit
Switchgear or Circuit breaker
N
1
2/N 3
1 2/N 3
Indoor unit
X Y
Earth leakage breaker
(Harmonic resistant type
)
Cable name plate
Power supply terminal block
○
It holds cables in place and protect the terminal
connection from external force.
○
This clamp is for the cable in the outside
diameter 9~15mm.
Please adjust it when not suitable.
○
Please be sure to carry out D-type (type III)
grounding work.
○
It has stuck on the lid of a control box.
Interconnecting and
grounding wires
(minimum)
40
50
60
2.0
mm
2
30A
16A
1.5
mm
2
×4
15A,30mA,
0.1sec or less
Switchgear or Circuit Breaker
Switch breaker Over current protector
rated capacity
Earth leakage breaker
●
The specifications shown in the above table are for units without heaters. For units with heaters, refer to
the installation instructions or the construction instructions of the indoor unit.
●
Switchgear or Circuit breaker capacity which is calculated from MAX. over current should be chosen along the
regulations in each country.
●
The cable specifications 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.
Power souce
(minimum)
Model
Phase
Single-phase
Grounding terminal
CAUTION
Cable clamp
In case of faulty wiring connection, the indoor units tops,
and then the run lamp turns on and the timer lamp blinks.
Use cables for interconnection wiring to avoid loosening of the wires.
CENELEC code for cables Required field cables.
H05
H
05
R
N
R
4or5
G
1.5
RNR3G1.5 ( Example ) or 245IEC57
Harmonized cable type
300/500 volts
Natural-and/or synth. rubber wire insulation
Polychloroprene rubber conductors insulation
Stranded core
Number of conductors
One conductor of the cable is the earth conductor
(yellow/green)
Section of copper wire (mm
2
)
