Electrical Installation - Hitachi air core 600 Installation & Maintenance Manual
Ducted unit cooling only type
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- Installation & maintenance manual (39 pages) ,
- Installation & maintenance manual (41 pages)
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9.5 ElectricalInstallation
● Use an ELB (Electric Leakage Breaker). If not used, it may cause an electric shock or a fire.
● Do not operate the system until all the check points have been cleared.
(A)Check to ensure that the insulation resistance is more than 2MΩ,by measuring the resistance between
ground and the terminal of the electrical parts. If not, do not operate the system until the electrical
leakage is found and repaired.
(B)Check to ensure that the stop valves of the outdoor unit are fully opened and then start the system.
● Do not touch any of the parts by hand at the discharge gas side, since the compressor chamber and the
pipes at the discharge side are heated higher than 90℃.
Model
18K
25K/30K
36K
42K(RAS-B42TFTSNAA)
42K(RAS-B42TFTSMAA)
48K/55K
Max. Running Current(A): REFER TO NAMEPLATE
NOTES:
1) Follow local codes and regulations when selecting field wires, and all the above are minimum size.
2) The wire sizes in the table are selected at the maximum current of the unit according to the
IEC60335-1 or regional standards. Use the wires which are not lighter than the ordinary polychloroprene
sheathed flexible cord (code designation H07RN-F).
When connecting the terminal block using flexible cord, make sure to use the round crimp-style terminal
for connection to the power supply terminal block.
Place the round crimp-style terminals on the wires up to the covered
part and secure in place.
When connecting the terminal block using a single core
wire, be sure to perform curing.
3) When the transmitting cable exceeds 15 meters, a larger wire size should be selected.
4) Use a shielded cable for the transmitting circuit and connect it to ground.
5) If power cables are connected in series, add each unit maximum current and select wires below.
Power Supply
220-240V ~, 50Hz
220-240V ~, 50Hz
220-240V ~, 50Hz
220-240V ~, 50Hz
380-415V 3N ~, 50Hz
380-415V 3N ~, 50Hz
Selection According to IEC60335-1
Current i(A)
i≤6
6＜i≤10
10＜i≤16
16＜i≤25
25＜i≤32
32＜i≤40
40＜i≤63
63＜i
* If current exceeds 63A, do not connect cables in series.
Installation and Maintenance
ELB
Nominal
Nominal Sensitive
Current
Current
(A)
(mA)
20
30
25
30
40
30
50
30
32
30
32
30
Wire Size (mm )
2
0.75
1
1.5
2.5
4
6
10
*
32
Power Source
Transmitting
Cable Size
Cable Size
EN60335-1*1
EN60335-1*1
3×2.5mm²
4×1.5mm²
3×2.5mm²
4×1.5mm²
4×1.5mm²
3×4.0mm²
4×1.5mm²
3×6.0mm²
4×1.5mm²
5×2.5mm²
4×1.5mm²
5×2.5mm²
covered part
Round crimp-style terminal
Terminal
Single core wire
Circuit
Breaker
(A)
20
25
40
50
32
32
Flexible cord
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