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Concealed Duct High Static Pressure
Installation Manual
Concealed Duct High Static Pressure
Installation Manual
8 ELECTRICAL CONNECTION
WARNING
1. Using the specified wires, ensure to
connect the wires, and fix wires securely so
that the external tension to the wires do not
affect the connecting part of the terminals.
Incomplete connection or fixation may cause a fire, etc.
2. Be sure to connect earth wire.
(grounding work)
Incomplete grounding cause an electric shock.
Do not connect ground wires to gas pipes, water pipes,
lightning rods or ground wires for telephone wires.
3. Appliance shall be installed in accordance
with national wiring regulations.
Capacity shortage of power circuit or incomplete
installation may cause an electric shock or a fire.
CAUTION
• If incorrect/incomplete wiring is carried out, it will cause
an electrical fire or smoke.
• Be sure to install an earth leakage breaker that is not
tripped by shock waves.
If an earth leakage breaker is not installed, an electric
shock may be caused.
• Be sure to use the cord clamps attached to the product.
• Do not damage or scratch the conductive core and inner
insulator of power and inter-connecting wires when
peeling them.
• Use the power cord and Inter-connecting wire of
specified thickness, type, and protective devices
required.
REQUIREMENT
• For power supply wiring, strictly conform to the Local
Regulation in each country.
• Power supply for indoor unit must be exclusive and
separated from the one for outdoor unit.
• For wiring of power supply of the outdoor units, follow
the Installation Manual of each outdoor unit.
• Never connect 220–240V power to the terminal blocks
( A , B , etc.) for control wiring.
(Otherwise, the system will fail.)
• Perform the electric wiring so that it does not come to
contact with the high-temperature part of the pipe.
The coating may melt resulting in an accident.
• After connecting wires to the terminal blocks, provide a
trap and fix wires with the cord clamp.
• Run the refrigerant piping line and control wiring line in
the same line.
• Do not turn on the power of the indoor unit until
vacuuming of the refrigerant pipes completes.
Remote controller wiring
2-core non polarity wire is used for the remote controller
wiring.
Wiring
1. Figure below shows the wiring connections indoor
power line and between the indoor and outdoor units
and between the indoor units and remote controller.
The wires indicated by the dash lines are provided at
the installation place.
2. Insulate the unsheathed redundant cords (conductors)
with electrical insulation tape.
Process them so that they do not touch any electrical or
metal parts.
n Wiring diagram
L
2
L
3
L
1
N
L
N
1 2 3
A B
1 2 3
Outdoor
unit
Indoor
unit
Indoor Fan Input power
220-240V~, 50 Hz
Outdoor Input power
380-415V 3N~, 50 Hz
Circuit breaker
(Leakage breaker)
Circuit breaker
(Leakage breaker)
Wired remote controlle
r
∗ Number of wire × wire size
n Power and Wiring Specification
Indoor fan Power supply
Maximum running current
Fuse rating
Indoor fan power supply wire∗
System interconnecting wires∗
220-240V~, 50 Hz
15A
25A
3 × 2.5mm² or more
(H07 RN-F or 60245 IEC 66)
4 × 1.5mm² or more
(H07 RN-F or 60245 IEC 66)
n Wire connection
REQUIREMENT
• Be sure to connect the wires matching the terminal numbers. Incorrect connection causes a trouble.
• Be sure to pass the wires through the bushing of wire connection holes of the indoor unit.
• Keep a margin (Approx. 100mm) on a wire to hang down the electrical control box at servicing, etc.
• The low-voltage circuit is provided for the remote controller. (Do not connect the high-voltage circuit)
1. Remove the cover of the electrical control box by taking off the mounting screws (2 positions)
2. Tighten the screws of the terminal block, and fix the wires with cord attached to the electrical control box.
(Do not apply tension to the connecting section of the terminal block.)
3. Mount the cover of the electrical control box without pinching wires.
<Terminal block of electrical control box>
System interconnecting wire
Cord clamp
Fixing screw
Bushing
System interconnecting
Terminal block
Wired remote controller connecting
Terminal block
Indoor fan power supply
Terminal block
Indoor fan
power supply wire
Wired
remote controller wire
Electrical control
box cover
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