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ELECTRICAL WIRING
!
C A U T I O N
•
Wrap the accessory packing around the wires, and plug the wiring
connection hole with the seal material to protect the product from any
condensate water or insects.
•
Lead the wires through the knockout hole in the side cover when
using conduit.
•
The procedure of the wiring work shall be performed according to
this manual and "Installation & Operation Manual" of the outdoor unit.
•
Connect correctly the power source line phases.
3-Phase 4 Wires: L1, N, 3-Phase 3 Wires: L1, L2
•
In the case of 3-Phases 4 Wires type. The power source must be
applied from L1 line and N line. If applied from L1-L2, L1-L3, the
electrical parts will be damaged.
16.1 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 Check to ensure that the power supply voltage is within
±10% of the rated voltage.
3 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.
4 Check to ensure that the earth wire is connected.
5 Do not operate the system until all the check points have
been cleared.
16.2 ELECTRICAL WIRING CAPACITY
16.2.1 Field minimum wire sizes for power source
Model
RPK-(0.4-4.0)FSR(H)M
?
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).
•
In the case that power cables are connected in series, add each unit
maximum current and select wires below:
19
PMML0552 rev.1 - 02/2021 - A10635790A
Maximum
Power source
current
1~ 220-240V 50/60Hz
5A
•
The control cable between the indoor unit and the outdoor unit does
not have any polarity. Do not apply an excessively high voltage to the
cable (Rated Voltage 5V). It may cause failure.
•
The remote control switch cable (Field-Supplied) does not have any
polarity. Do not apply an excessively high voltage to the cable (Rated
Voltage 5V). It may cause failure.
•
Maintain the rated voltage for the power source. It may be harmful to
the unit if the voltage is either too high or too low.
•
Take enough capacity for the power source. If not, the operation can
not be started by the wide voltage reduction.
•
The expansion valve kit should be used for "indoor unit wall type without
expansion valve" installation together. Refer to the "Installation and
Operation Manual of the Expansion Valve Kit" for wiring procedures.
•
The expansion valve kit (sold separately as an option) installation
work should be completed before turning on the power for the indoor
unit side.
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.
b. Check to ensure that the stop valves of the outdoor unit
are fully opened, and then start the system.
c. 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.
6 Do not touch any of the parts by hand at the discharge gas
side while the system is running, since the compressor
chamber and the pipes at the discharge side are heated
higher than 90ºC.
Power source cable size
EN 60335-1 *1
0.75mm
2
Selection according to EN 60335-1
Current i (A)
i < 6
6 < i < 10
10 < i < 16
16 < i < 25
25 < i < 32
32 < i < 40
40 < i < 63
63 < i
•
Use the shielded twisted pair cable for control between the outdoor
unit and the indoor unit, the control cable between indoor units and
the remote control switch cable.
Transmitting cable size
EN 60335-1 *1
0.75mm
2
Wire size (mm
)
2
0.75
1
1.5
2.5
4
6
10
In the case that current exceeds 63A,
do not connect cables in series.
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