15.1 GENERAL CHECK
1
Make sure that the field-selected electrical components
(main power switches, circuit breakers, wires, conduit
connectors and wire terminals) have been properly selected
according to the electrical data given in “Technical Catalog”.
Make sure that the components comply with National
Electrical Code (NEC).
2
Use the shielded twist pair cable for the control cable
between the outdoor unit and the indoor unit, the control
cable between indoor units and the remote control switch
cable.
3
Check to ensure that the power supply voltage is within
±10% of the rated voltage.
4
Check the capacity of the electrical wires. If the power
source capacity is too low, the system cannot be started due
to the voltage drop.
5
Check to ensure that the earth wire is connected.
15.2 ELECTRICAL WIRING CAPACITY
15.2.1
Field minimum wire sizes for power source
• Use an ELB (Earth Leakage Breaker). If not used, it will cause an electric shock or a fire.
• Do not operate the system until all the check points have been cleared.
a.
Check to ensure that the electrical resistance is more than 1 megohm, by measuring the resistance between ground and the
terminal of the electrical parts. If not, do not operate the system until the electrical leakage is found and repaired. Check to
ensure that the stop valves of the outdoor unit are fully opened, and then start the system.
b.
Check to ensure that the switch on the main power source has been ON for more than 12 hours, to warm the compressor oil
by the crankcase heater.
• Do not touch any of the parts by hand at the discharge gas side, since the compressor chamber and the pipes at the discharge
side are heated higher than 90ºC.
Model
Power source
Maximum current
Power source cable size
Transmitting cable size
EN 60335-1 *1
EN 60335-1 *1
RCD-(0.8-6.0)FSR
1~ 230V 50Hz
5A
0.75mm
2
0.75mm
2
?
N O T E
• Follow local codes and regulations when selecting field wires.
• The wire sizes marked with *1 in the above table are selected at the
maximum current of the unit according to the European Standard,
EN 60335-1. Use the wires which are not lighter than the ordinary
tough rubber sheathed flexible cord (code designation 60245 IEC 57)
or ordinary polychloroprene sheathed flexible cord (code designation
60245 IEC 57).
• Use a shielded cable for the transmitting circuit and connect it to
ground.
• In the case that power cables are connected in series, add each unit
maximum current and select wires below.
Selection according to EN 60335-1
Current i (A)
Wire size (mm
2
)
i < 6
0.75
6 < i < 10
1
10 < i < 16
1.5
16 < i < 25
2.5
25 < i < 32
4
32 < i < 40
6
40 < i < 63
10
63 < i
In the case that current exceeds 63A,
do not connect cables in series.
15.2.2
Harmonics
In relation to IEC 61000-3-2, the situation of harmonics for each
model is as follows:
Situation of the models in relation to IEC
61000- 3-2
Model
Equipment complying with IEC 61000-3-2
RCD-0.8FSR
RCD-1.0FSR
RCD-1.5FSR
RCD-2.0FSR
RCD-2.5FSR
RCD-3.0FSR
RCD-4.0FSR
Installation restrictions may be applied by
supply authorities in relation to harmonics
RCD-5.0FSR
RCD-6.0FSR
ELECTRICAL WIRING
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Summary of Contents for RCD-2.0FSR
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