High Wall Type
Installation Manual
–16–
 
EN
9 Electrical Connection
WARNING
1. Use predefined wire and connect them 
certainly. Keep the connecting terminal 
free from external force.
Improper wire connection or clamping may 
result in exothermic, fire or malfunction.
2. Connect ground 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. Install appliance in accordance with 
national wiring regulations.
Capacity shortage of circuit breaker or 
incomplete installation may cause an 
electric shock or a fire.
CAUTION
• Consult local building codes, NEC (National 
Electrical Code) or CEC (Canadian Electrical 
Code) for special requirements.
• If incorrect/incomplete wiring is carried out, it 
will cause an electrical fire or smoke.
• Install circuit breaker is not tripped by shock 
waves.
If circuit breaker is not installed, an electric 
shock may be caused.
• Use the cord clamps attached to the product.
• Do not damage or scratch the conductive core 
and inner insulator of power and control wires 
when peeling them.
• Use the power cord and control wire of 
specified thickness, type, and protective 
devices required.
• Do not connect 208/230 V power to the terminal 
blocks (U1, U2, 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.
• Do not turn on the circuit breaker of the indoor 
unit until vacuuming of the refrigerant pipes 
completes.
REQUIREMENT
• For power supply wiring, strictly conform to the 
Local Regulation in each country.
• Run the refrigerant piping line and control wiring 
line in the same line.
 Power supply wire and control 
wires specifications
Power supply wire and control wires are procured 
locally.
For the power supply specifications, follow to the 
table below. If capacity is little, it is dangerous 
because overheat or seizure may be caused.
Indoor unit power supply
• For the power supply of the indoor unit, prepare 
the exclusive power supply separated from that 
of the outdoor unit.
▼ Power supply
Control wiring, Central control wiring
• 2-core with non-polarity wires are used for the 
control wiring between indoor unit and outdoor 
unit and Central control wiring.
• To prevent noise trouble, use 2-core shielded 
wire.
• The length of the communication line means the 
total length of the control wire length between 
indoor and outdoor units added with the central 
control wire length.
Power supply 208/230-1-60
16-EN
+001111053901_00Ta.book  Page 16  Monday, January 17, 2011  11:35 AM