DC Inverter Cassette Type Air Conditioner Installation and Operation Manual
58
● All line connections must conform to the schematic diagram of lines. Wrong connection may cause
abnormal operation or damage of the air-conditioning unit.
● Do not let any cable contact the refrigerant pipe, the compressor and moving parts such as fan.
● Do not change the internal line connections inside the air-conditioning unit. The manufacturer shall not
be liable for any loss or abnormal operation arising from wrong line connections.
8.5.14 Connection of the Power Cable
1. Air-conditioning unit with single-phase power supply
①
Remove the front-side panel of the outdoor unit.
②
Pass the cable though rubber ring.
③
Connect the power supply cable to the “L, N” terminals and the
grounding screw.
④
Use cable fastener to bundle and x the cable.
2. Air-conditioning unit with 3-phase power supply
①
Remove the front-side panel of the outdoor unit.
②
Attach rubber ring to the cable-cross hole of the outdoor unit.
③
Pass the cable though rubber ring.
④
Connect the power cable to the terminal and earthing screws marked
“L1, L2, L3 & N”.
⑤
Use cable fastener to bundle and x the cable.
8.6 Products Electric Installation
Caution!
The unit should be reliably earthed, if it is improperly earthed that may cause electric shock or re.
Wiring layout:
● Installation should be conducted by National Wiring Regulation.
● he rated voltage and exclusive power supply must be adopted for the air conditioners.
● The power cable should be reliable and xed, in order to avoid the wiring terminal be suffered from force.
And do not drag the power cable forcibly.
● The wire diameter of power cable should be large enough, if power cable and connection wire
● be damaged, it should be replaced by the exclusive cable.
● All electric installation must be done by professional personnel according to local law, regulation and this
manual.
● It should be reliably earthed, and it should be connected to the special earth device, the installation work
should be operated by the professional.
● The creepage protecting switch and air switch must be installed.
● Air switch should have the thermal dropout and magnetic dropout function, in order to avoid the short
circuit and overload.
● The on spot connection should refer to the circuit diagram, which is stuck on the unit body.
Caution:
Take great care when carrying out
the following connections, so as to
avoid malfunction of the
air-conditioning unit because of
electromagnetic interference:
In case the unit is installed in a
place vulnerable by electromagnetic
interference, it is better to use
shielded cable or double-twisted
cable as the signal wire.
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