Electric Wiring And The Application - Haier MVHP036MV2AA Installation Manual

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 fire.
• To prevent damaging the wires, avoid contact
with refrigerant pipes, steel edges and electrical
components. It may lead to the occurrence of
fire.
CAUTION
• Secure the power cord with a wire tie in the
unit.
Note:
when the outdoor unit is not using a circuit, it
should be sealed with a rubber blocker.
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.
Signal wiring:
The outdoor unit and all the indoor units are
connected in parallel through with shielded two
wire cord.
Communication wiring figure
Indoor 3
P Q A B C
wired
A B C
controller
• Confirm that the electrical equipment used on the installation site
• (main power switch, circuit breaker, wire, conduit and wiring
• Confirm that the power supply voltage is within +/-10% of the
• Check for correct voltage. Otherwise, the compressor will not start
• Measure the resistance between the ground and the electrical
• Connect the power cord to the terminal of the indoor unit and the
• Connect the outdoor and indoor communication wire to the 1 and
• 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
• use a larger gauge wire.
• Use a round terminal connection on the wire with an insulating
• Secure the wire away from any sharp edges and materials that
Outdoor
P Q
Indoor 4
P Q A B C
A B C wired
controller
Inspect
terminals, etc.) have been selected according to current data, to
ensure that the device in line with national standards.
rated voltage and that the unit is properly grounded to prevent
damage to the electrical components.
if the voltage is too low.
terminals and ensure that there is more than 1MΩ. Otherwise, the
system will not start. Fix the issue prior to operating the system.
Connection
outdoor electrical box, connect the ground wire to the grounding
bolt of the outdoor unit and the indoor electrical box.
2 terminals on the terminal block. If the power cord is connected
to the communication terminals, the circuit board will be damaged.
supply must conform with IEC 60245 requirements. If the power
cord length exceeds 20m
protective sleeve.
may damage the wire to prevent damage and causing a fire or
damage.
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
A B C
wired wired
controller controller