Electric Wiring And The Application - Haier AU07NFPEUA Installation Manual

Electric wiring and the application

WARNING
• Switch off the main power switch of the indoor
and outdoor machine for more than 1 minutes
before the wiring or regular inspection.
• To prevent the destruction of wires and
electrical components by rats or other animals.
Serious, it may lead to the occurrence of fire.
• To avoid damage to the wire, avoid contact with
refrigerant pipes, steel edges and electrical
components. Serious, it may lead to the
occurrence of fire.
CAUTION
• Secure the power cord with a wire tie in the
machine.
Note:
when the wiring of the outdoor machine is not
using the wire, it should be fixed with the rubber
ring.
CAUTION
• In the case of 3 phase 5 wire type, the
power supply of the indoor machine must be
connected use L1 line and N line, prohibit the
use of L1-L2, L1-L3, Otherwise the electrical
part will be damaged.
Communication wiring figure
Indoor 3
P Q A B C
wired
A B C
controller
Inspect
• To ensure that the electrical equipment used on the installation
site (main power switch, circuit breaker, wire, conduit and wiring
terminals, etc.) have been selected according to current data, to
ensure that the device in line with national standards.
• Check the power supply voltage in the range of 10% of the rated
voltage and the ground wire is included in the power supply line.
Otherwise, electrical parts will be damaged.
• Check whether the power supply is satisfied. Otherwise, the
compressor will not start when the voltage is too low.
• By measuring the insulation resistance between the ground
and the electrical device terminals, to ensure that more than 1
MΩ. Otherwise, the system can not be started until the cause of
leakage and maintenance.
Connection
• Connect the power cord to the terminal of the indoor unit and the
outdoor mechanical and electrical gas box, connect the ground
wire to the grounding bolt of the outdoor machine and the indoor
mechanical and electrical air box.
• Connect the external and internal communication lines to the
1 and the 2 terminals on the terminal. If the power cord is
connected, the printed circuit board will be damaged. And the use
of shielded twisted pair wire.
• Do not connect the fastening screws on the front of the cover.
• The power cord must be made of copper wire, and the power
supply must be in line with IEC 60245 requirements. If the power
cord length exceeds 20m, the need to increase the size.
• The power supply line is fixed with a round connection terminal
with an insulating protective sleeve. Not with sheet metal contact
and extrusion, in order to avoid the cut line of skin caused by fire.
Outdoor
P Q
Indoor 4
P Q A B C
wired
A B C
controller
Indoor 1
P Q A B C
Indoor 5
P Q A B C
A B C wired
controller
13
Communication wire with polarity
Indoor 2
P Q A B C
*
wired
A B C
controller
Indoor 6
P Q A B C
A B C
wired
controller
A B C
wired
controller