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8
Electric wiring
WARNING
The appliance shall be installed in accordance with national wiring regulations.
Capacity shortages of the power circuit or an incomplete installation may cause an electric shock or fire.
CAUTION
Perform wiring of power supply complying with the rules and regulations of the local electric company.
Do not connect 380 V- 415 V power to the terminal blocks for control cables (Uv (U1, U2), Uh (U3, U4), Uc (U5, U6));
otherwise, the unit may break down.
Be sure that electric wiring does not come into contact with high-temperature parts of piping; otherwise, the
coating of cables may melt and cause an accident.
After connecting wires to the terminal block, take off the traps and fix the wires with cord clamps.
Process both electric wiring and refrigerant piping into the same system.
Do not conduct power to indoor units until vacuuming of the refrigerant pipes has finished.
For the power supply wiring of indoor units, follow the instructions in the Installation Manual of each indoor unit.
Power supply specifications
Do not bridge the power between outdoor units
through the equipped terminal blocks (L
, L
, L
, N).
1
2
3
Power supply for
outdoor units
Incorrect
– 23 –
Power wiring selection
1
Single unit
Unit 1
U
n
ELCB
ELCB
Main
Main
switch
switch
Model Name
Phase supply
38VT0081
38VT0101
38VT0121
38VT0141
(014A
)
38VT0161
3 N~ 50 Hz
38VT0181
38VT0201
38VT0221
38VT0241
38VT0261
t i
2
Unit 3
U
n
t i
4
ELCB
ELCB
Main
Main
switch
switch
MCA: Minimum Circuit Amps
MOCP: Maximum Overcurrent Protection (Amps)
MCA
17
20
22
28
36
39
380-415 V
42
45
53
54
U
n
t i
5
ELCB
Main
switch
MOCP
20
25
25
32
40
50
50
50
63
63
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