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Installation and Maintenance
6.3 Electrical Installation
● Use an ELB (Electric Leakage Breaker). If not used, it will 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.
Pay attention to the following items while the system is running.
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℃.
18
Model
Transmission Cable Size
9K/24K
2
4×1.5mm
Max. Running Current(A): REFER TO NAMEPLATE
NOTES:
1) Follow local codes and regulations when selecting field wires.
2) The wire sizes marked in the table are selected at the maximus 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 transmission cable length 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) In the case that power cables are connected in series, add each unit maximum current and select wires below.
*In the case that current exceeds 63A, do not connect cables in series.
Flexible cord
covered part
Round crimp-style terminal
Terminal
Single core wire
Current i(A)
2
Wire Size(mm )
i≤6
0.75
6＜i≤10 1
10＜i≤16 1.5
16＜i≤25 2.5
25＜i≤32 4
32＜i≤40 6
40＜i≤63 10
63＜i
*
Selection According to IEC60335-1
7. Test Run
Please perform test run according to outdoor unit installation manual.
(Btu/h)
●
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