-
29
-
'11 • KX-T-166
6-2. Power supply connection
6-1. Wiring system drawing
6. Electric wiring
(3) Outdoor unit power supply specification: 380/415V 3N~ 50Hz 380V 3N~ 60Hz
Model
224KXE6
280KXE6
Power source
Three-phase
380/415V 50Hz
380V 60Hz
Cable size for
power source (mm
2
)
5.5
Rated current
30
30
2
M5
54
Switch capacity
Earth leakage breaker
Size (mm
2
)
Screw type
Outdoor unit
Signal wire (between outdoor - indoor units
〈Ⅰ〉
)
(Example of combination)
Moulded-case circuit breaker (A)
Earth wire
Wire length
(m)
30A, 30mA
less than 0.1 sec
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.
Please install an earth leakage breaker without fail
. The installation of an earth leakage breaker is compulsory in order to prevent electric shocks or fire accidents.
(Since this unit employs inverter control, please
use an impulse withstanding type
to prevent an earth leakage breaker’s false actuation.)
Please note
a) Use only copper wires.
Do not use any supply cord lighter than one specified in parentheses for each type below.
- braided cord (code designation 60245 IEC 51), if allowed in the relevant part 2;
- ordinary tough rubber sheathed cord (code designation 60245 IEC 53);
- flat twin tinsel cord (code designation 60227 IEC 41)
- ordinary polyvinyl chloride sheathed cord (code designation 60227 IEC 53).
Please do not use anything lighter than polychloroprene sheathed flexible cord (cord designation 60245 IEC57) for supply cords of parts of appliances for outdoor use.
b)
Use separate power supplies for the indoor and outdoor units
.
c)
The power supplies for indoor units in the same system should turn on and off simultaneously
.
d) Ground the unit. Do not connect the grounding wire to a gas pipe, water pipe, lightning rod or telephone grounding wire.
A grounding wire must be connected before connecting the power cable. Provide a grounding wire longer than the power cable.
If improperly grounded, an electric shock or malfunction may result.
e)
The installation of an impulse with standing type earth leakage breaker is necessary
. A failure to install an earth leakage breaker can result in an accident such as an electric shock
or a fire. Do not turn on the power until the electrical work is completed. Be sure to turn off the power when servicing.
f ) Please do not use a condensive capacitor for power factor improvement under any circumstances. (It does not improve power factor, while it can cause an abnormal overheat accident)
g) For power supply cables, use conduits.
h) Please
do not lay electronic control cables (remote control and signaling lines) and other high current cables together outside the unit
. Laying them together can result in
malfunctioning or a failure of the unit due to electric noises.
i ) Power cables and signaling lines must always be connected to the terminal block and secured by cable fastening clamps provided in the unit.
j ) Fasten cables so that they may not touch the piping, etc.
k)
When cables are connected, please make sure that all electrical components within the electrical component box are not free or not loose on the terminal connection
and then
attach the cover securely. (Improper cover attachment can result in malfunctioning or a failure of the unit, if water penetrates into the box.)
l ) Make sure to use circuit breakers (earth leakage breaker and circuit breaker) of proper capacity.
Use of breakers of larger capacity could result in trouble on components or fire accident.
The circuit breaker should isolate all poles under over current.
m)
Install isolator or disconnect switch on the power supply wiring in accordance with the local codes and regulations. The isolator should be locked in OFF state in accordance with
EN60204-1.
n)
After maintenance, all wiring, wiring ties and the like, should be returned to their original state and wiring route, and the necessary clearance from all metal parts should be secured.
CAUTION
If the earth leakage breaker is exclusively
for ground fault protection, then you will
need to install a circuit breaker for wiring
work.
(1) Method of leading out cables
●
As shown on the drawing in Section 4-2, cables can be laid through the front, right, left or bottom casing.
●
In wiring on the installation site, cut off a half-blank covering a penetration of the casing with nippers.
●
In the case of an installation using a collective drain system, use a port other than the bottom one to take out cables and pipes. If the bottom port is used, seal it thoroughly so that drain
water may not spill out.
(2) Notabilia in connecting power cables
●
Connect the ground wire before you connect the power cable. When you connect a grounding wire to a terminal block, use a
grounding wire longer than the power cable so that it may not be subject to tension.
●
Do not turn on power until installation work is completed. Turn off power to the unit before you service the unit.
●
Ensure that the unit is properly grounded.
●
Always connect power cables to the power terminal block.
●
To connect a cable to the power terminal block, use a round crimp contact terminal.
If two cables are to be connected to one terminal, arrange cables in such a manner that you put their crimp contact terminals
together back to back. Further, put the thinner cable above the thicker one in arranging cables for such connection.
●
Use specified wires in wiring, and fasten them securely in such a manner that the terminal blocks are not subject to external
force.
●
In fastening a screw of a terminal block, use a correct-size driver.
Fastening a screw of a terminal block with excessive force can break the screw.
●
When electrical installation work is completed, make sure that all electrical components within the electrical component box
are free of loose connector coupling or terminal connection.
a) The method of laying cables has been determined pursuant to the Japanese indoor wiring regulations (JEAC8001).
(Please adapt it to the regulations in effect in each country)
b) For details, please refer to the installation manual supplied with the indoor unit.
Please note
Request
(a) Table at left shows the standard specification. Use the power supply of single phase 220/240V.
(b) Distance in the table shows the value obtained when indoor units are connected in series. The table shows the wire
size and the distance provided voltage drop is within 2% for each total current of indoor unit. Where the current
exceeds the values in the table, change the wire size according to the extension wiring regulations.
(c) Wires connected to indoor units are allowed up to 5.5 mm
2
. For 8 mm
2
or more, use a dedicated pull box and branch
to indoor units with 5.5 mm
2
or less.
※
Please use a shielded cable.
Signal line (mm
２
)
20A, 30mA
less than 0.1 sec
2
3.5
5.5
5.5
30A, 30mA
less than 0.1 sec
21
20
30
2 core
×
0.75
※
33
24
20
30
Rated current Switch capacity
Moulded-case circuit breaker (A)
Earth leakage breaker
outdoor-indoor indoor-indoor
Combined total capacity
of indoor units
Cable size for
power source(mm
2
) Wire length(m)
less than 7A
less than 11A
less than 12A
less than 16A
(4) Indoor unit power source (Outdoor unit is another power source.) & signal line
Round crimp
contact terminal
Crimp
contact terminal
Diameter of a cable:thin
Diameter of a cable:thick
Wire
Terminal block
Power supply (outdoor unit side)
Power supply (indoor unit side)
Grounding work
Grounding work
Earth leakage
breaker
Circuit breaker
for cabling
Earth leakage
breaker
Circuit breaker
for cabling
Indoor unit
Remote controller wire
X・Y
X・Y
X・Y
X・Y
X・Y
X・Y
Ａ・Ｂ
Ａ・Ｂ
L1・L2・L3・N
1
・
2
1
・
2
Signal wire (between indoor units)
Remote
controller
〈Ⅷ〉
Ａ・Ｂ
1
・
2
Ａ1・Ｂ1
220/240V
〜
50Hz
220V
〜
60Hz
380/415V 3N
〜
50Hz
・・・
・・・
・・・
・・・
〈Ⅰ〉
〈Ⅱ〉
