Specifications

238
When No. 4 shielding wire is used, always ground the single wire side of the shielding wire . In addition, using the
shielding wire is helpful to prevent the incorrect connection between 5V DC and 220/240V or 380/415V AC because the
discrimination from the power supply wire is clear.
No.
1
2
3
4
Vinyl cabtire round cord
Vinyl cabtire round cable
Control vinyl insulated, vinyl sheathed cable
Shielding wire
Name
VCTF double-core 0.75 to 2 mm
2
VCT double-core 0.75 to 2 mm
2
CVV double-core 0.75 to 2 mm
2
MVVS double-core 0.75 to 2 mm
2
Symbol
(2) Precaution in electric wiring.
(a) Use separate power supplies for the outdoor and indoor units respectiveliy (Standard specification)
(b) Signal wiring (for indoor and outdoor units)
• Double-core cable with a diameter 0.75 to 2 mm2 should be used for the signal wires.
• Never make the indoor and outdoor connecting signal line use “co-axial cable” or “strand” with the
power wiring for indoor and outdoor unit and other ower line.
(Never use a multiconductor wire together with power line. It may cause erroneous operation.)
• Do not connect high voltage wires 220/240 V or 380/415 V to signal wires. as these wires are DC 5V. Signal wires
should be connected so that the terminal Nos. conform with each other for between outdoor and between indoor units.
However, they will work properly if different polarities are connected.
(Connect (A) and (A), (B)and (B).)
• Do not strand or run the remote control cord with power line, electric line, etc.
• The total length of the signal wires Should be 1000m or less.
• Recommended signal wire list
(3) Wiring system Diagram
(a) Central flow divide system
Note (1) Ensure to connect the signal wire from the indoor unit with the butt joint terminal of the same connection port number as the refrigerant pipe.
Outdoor unit
3 Phase 380V 50Hz, 415V 50Hz
Earth
leakage
breaker
Earth
leakage
breaker
Circuit
Breaker
Cicuit
breaker
Earth
Signal wire
(Between outdoor and indoor units)
Signal wire (Between indoor unit)
Central flow divide
controller
Central flow divide
controller
(For 6 units)
Signal wire
(Flow divide controller to indoor unit)
(For 2 units)
Remote
controller
wire
Remote
controller
Power source (Outdor unit side)
Power source (Indoor unit)
Indoor
unit
<!><@><#><$><%><^><&><*>
1 Phase 220/240V 50Hz