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Electrical wiring
6 ELECTrICAL WIrING
6.1 GENErAL INfOrmATION
D A N G E r
• Turn off the main power switch to the indoor unit and the
outdoor unit before electrical wiring work or a periodical
check is performed.
• Check to ensure that the indoor fan and the outdoor fan
have stopped before electrical wiring work or a periodical
check is performed.
• Protect the wires, drain pipe, electrical parts, etc. from
rats or other small animals. If not protected, rats may
gnaw at unprotected parts and at the worst, a fire will oc-
cur.
C A u T I O N
•
Install an ELB (Earth Leakage Breaker) in the power source
line.
•
Use twisted shielded pair cable or shield pair cable for trans-
mission wires between the indoor and the outdoor units, and
connect the shielded part to the earth screw in the electrical
box of the indoor unit as shown below.
•
Wrap the field supplied insulation around the wires, and plug
the wiring connection hole with the seal material to protect the
product from any condensate water or insects.
6.2 ELECTrICAL WIrING CONNECTION fOr INDOOr uNIT
1 The electrical wiring connection for the indoor unit is shown
below.
Cord clamp
Wiring support plate
Electrical box
PCB
(Printed circuit
board)
Electrical box
cover
Transition wiring between indoor
unit and outdoor unit
Electrical box
Terminal board
(white) DC 5V
Terminal board
(black)
Earth wiring connection screw
11
PmmL0223A rev.0 - 05/2012 - P5415035
Piping cover
Wiring connection hole
Screw
for
wiring
support plate under
piping cover
Screw
(for electrical box cover)
Wiring for remote
control switch
Wiring support
plate
Cord clamp
Screw for wiring
support plate
Power source wiring
(between indoor units)
•
Tightly secure the wires with the cord clamp inside the indoor
unit.
•
Lead the wires through the knockout hole in the side cover
when using conduit.
•
Secure the cable of the remote control switch using the cord
clamp inside the electrical box.
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. make sure
that the components follow local codes and regulations.
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 Select the wire sizes according to the European Standard,
EN60 335-1. Use the wires which are not lighter than the or-
dinary tough rubber sheathed flexible cord (code designation
H05RN-F) or ordinary polychloroprene sheathed flexible cord
(code designation H05RN-f).
5 Check to ensure that the ground wire is connected.
2 Remove the electrical box cover (1 screw).
3 Loosen two (2) screws for the wiring support plate.
4 Connect the cable of an optional remote control switch or an
optional extension cable to the terminals inside the electrical
box through the connecting hole in the cabinet.
5 Connect the power supply and earth wires to the terminals in
the electrical box.
6 Connect the wires between the indoor unit and the outdoor
unit to the terminals in the electrical box.
Earth terminal
Terminal board (TB1)
Terminal board (TB2)
Earth
screw
Power source
cable
Remote control
switch cable
Transmission wiring
Electrical box
DSW3
RSW1
DSW6
DSW9
PCN6
PCN4
EF2
5
CN2
L1
PCN7
L3
5
SW1
RSW2
DSW5
DSW4
LED5
+
LED4
IC1
CN28
TR1
LED6
T1
PCN1
THM1
THM2
THM3
THM4
THM5
CN33
CN9
CN10
CN1
+
CN36
CN8
CN7
THU1
CN5
CN14
CN4
CN3
CN6
HA
TB1
TB2
TP
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