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13
Electric wiring and the application
WARNING
• Turn off the main power switch of the indoor
and outdoor unit for 1 minute or more before
wiring or servicing.
• To prevent damaging the wires and electrical
components, avoid installing around animals. It
may lead to the occurrence of re.
• To prevent damaging the wires, avoid contact
with refrigerant pipes, steel edges and electrical
components. It may lead to the occurrence of
re.
CAUTION
• Secure the power cord with a wire tie in the
unit.
CAUTION
• When using 3 phase 5 wire power, the
power supply of the indoor machine must be
connected using L1 and N. Do not use L1-L2,
L1-L3, otherwise the unit electrical components
will be damaged.
Note:
when the outdoor unit is not using a circuit, it
should be sealed with a rubber blocker.
Inspect
• Conrm 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.
• Conrm that the power supply voltage is within +/-10% of the
rated voltage and that the unit is properly grounded to prevent
damage to the electrical components.
• Check for correct voltage. Otherwise, the compressor will not start
if the voltage is too low.
• Measure the resistance between the ground and the electrical
terminals and ensure that there is more than 1MΩ. Otherwise, the
system will not start. Fix the issue prior to operating the system.
Connection
• Connect the power cord to the terminal of the indoor unit and the
outdoor electrical box, connect the ground wire to the grounding
bolt of the outdoor unit and the indoor electrical box.
• Connect the outdoor and indoor communication wire to the 1 and
2 terminals on the terminal block. If the power cord is connected
to the communication terminals, the circuit board will be damaged.
• Use shielded twisted pair wire.
• Do not screw to the front of the cover.
• The power wire must be made of copper wire, and the power
supply must conform with IEC 60245 requirements. If the power
cord length exceeds 20m
• use a larger gauge wire.
• Use a round terminal connection on the wire with an insulating
protective sleeve.
• Secure the wire away from any sharp edges and materials that
may damage the wire to prevent damage and causing a re or
damage.
Signal wiring:
The outdoor unit and all the indoor units are
connected in parallel through with shielded two
wire cord.
Communication wiring gure
Outdoor
Indoor 1
Indoor 3 Indoor 4 Indoor 5 Indoor 6
Indoor 2
Communication wire with polarity
wired
controller
P Q A B C
P Q A B C
P Q A B C P Q A B C P Q A B C
P Q A B C
A B C
A B C
A B C
A B C
A B C
A B C
P Q
wired
controller
wired
controller
wired
controller
wired
controller
wired
controller
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