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• When cables are connected, make sure that all electrical components within the electrical component box are free of loose connector coupling or
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.)
• Never use a shield cable.
Power supply terminal block
Cable clamp
• It holds cables in place and protect the
terminal connection from external force.
• This clamp is for the cable in the outside
~
diameter 9
15mm.
Please adjust it when not suitable.
Cable name plate
• It has stuck on the lid of a control box.
Grounding terminal
• Please be sure to carry out D-type (type
III) grounding work.
INSTALLATION TEST CHECK POINTS
Check the following points again after completion of the installation, and before turning on the power. Conduct a test run again and ensure that the unit operates properly.
Explain to the customer how to use the unit and how to take care of the unit following the instruction manual.
After installation
Power cables and connecting wires are securely fixed to the terminal block.
The power supply voltage is correct as the rating.
The drain hose is fixed securely.
Operation valve is fully open.
No gas leaks from the joints of the operation valve.
Power cable, indoor - outdoor connecting wire circuit diagram
Model 09, 12
CAUTION
Please connect the earthed
line of indoor and outdoor
connecting wire to a bracket
part of the illustration.
Indoor - Outdoor
Power cable
connecting wire
Power cable, indoor-outdoor connecting wires
Model 09, 12
• Always perform grounding system installation work with the power cord unplugged.
• Connect a pair bearing a common terminal number with an indoor-outdoor connecting wire.
Earth leakage breaker
• In cabling, fasten cables securely with cable clamps so that no external force may work on terminal connections.
(Harmonic resistant type)
• Grounding terminals are provided in the control box.
Switchgear or Circuit breaker
CAUTION
1
2/N
Outdoor unit
1
2/N
3
Phase
1 2/N
3
Indoor unit
Single-phase
Model 18
Earth leakage breaker
(Harmonic resistant type)
• The specifications shown in the above table are for units without heaters. For units with heaters, refer to the
installation instructions or the construction instructions of the indoor unit.
Switchgear or Circuit breaker
• Switchgear or Circuit breaker capacity which is calculated from MAX. over current should be chosen along the
regulations in each country.
N
L
• The cable specifications are based on the assumption that a metal or plastic conduit is used with no more than
Outdoor unit
1
2/N
3
three cables contained in a conduit and a voltage drop is 2%. For an installation falling outside of these
conditions, please follow the internal cabling regulations. Adapt it to the regulation in effect in each country.
1 2/N
3
Indoor unit
The pipe joints for indoor and outdoor pipes have been insulated.
The reverse flow check cap is attached.
The cover of the pipe cover (A) faces downward to prevent rain from entering.
Gaps are properly sealed between the pipe covers (A) (B) and the wall surface / pipes.
The screw of the side cover is tightened securely.
(yellow/green)
1.5
Section of copper wire (mm
2
Model 18
Power cable
Indoor - Outdoor
connecting wire
Always use an earth leakage circuit breaker designed for inverter circuits to
prevent a faulty operation.
Switchgear or Circuit Breaker
Model
Earth leakage breaker
Over current protector
Switch breaker
rated capacity
09
15A, 30mA,
12
30A
16A
0.1sec or less
18
)
Interconnecting and
Power source
grounding wires
(minimum)
(minimum)
2.0mm
2
1.5mm
2
X 4
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Table of Contents
Troubleshooting
