Specifications
-
103
-
'10 • SR-T-091
Cable name plate
Power supply terminal block
Grounding terminal
Cable clamp
CAUTION
Always use an earth leakage circuit breaker designed for inverter circuits to
prevent a faulty operation.
Outdoor unit
Switchgear or Circuit breaker
1
1
2/N
2/N
3
12/N 3
Indoor unit
Interconnecting and
grounding wires
(minimum)
20
25
35
50
Switch breaker
Over current protector
rated capacity
Power source
(minimum)
Model
15A, 30mA,
0.1sec or less
30A 16A 2.0mm
2
1.5mm
2
X 4
Earth leakage breakerPhase
Single-phase
INSTALLATION TEST CHECK POINTS
After installation
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.
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.
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.
Indoor - Outdoor
connecting wire
Power cable
Power cable, indoor - outdoor connecting wire circuit diagram
Power cable, indoor-outdoor connecting wires
• 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.
• Please be sure to carry out D-type (type
III) grounding work.
• It has stuck on the lid of a control box.
Indoor - Outdoor
connecting wire
Please connect the earthed
line of indoor and outdoor
connecting wire to a bracket
part of the illustration.
Model 20, 25, 35 Model 50
Model 20, 25, 35
Model 50
Power cable
L
Outdoor unit
Switchgear or Circuit breaker
N
12/N3
12/N 3
Indoor unit
Earth leakage breaker
(Harmonic resistant type)
Earth leakage breaker
(Harmonic resistant type)
• 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.
•
In cabling, fasten cables securely with cable clamps so that no external force may work on terminal connections.
• Grounding terminals are provided in the control box.
• 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 capacity which is calculated from MAX. over current should be chosen along the
regulations in each country.
• The cable specifications are based on the assumption that a metal or plastic conduit is used with no more than
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.
Switchgear or Circuit Breaker
CAUTION