AUX-DC inverter ARV outdoor unit individual series technical manual
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6. Electrical connection
6.1 Caution and notice
Caution
All field wiring and components must be installed by a licensed electrician.
Please separately design the special power of indoor units and outdoor units.
Be sure to use a dedicated power circuit, Never use a power supply shared by another appliance. The
connection fixing circuit installs all polar disconnecting device with contact gap above 3mm.
The indoor un
its’ power, protector and manual switch connecting to the same outdoor unit must be general.
All indoor units must be the same circuit, and must simultaneously on or off.
The communication line between indoor units and outdoor units please use 2 core shi
elded wiring, while don’t
use the multi core wiring without shielded affect, for the interference is reduced each other.
Purchased wiring, parts and materials should be in compliance with relevant local and national regulations.
AC equipment should be grounded according to the relevant local and national electrical regulations.
Maintenance operation should be conducted after switching off power supply.
The outdoor unit includes an inverter device. Connect to the earth to eliminate the impact on other devices
and to prevent leaked current from being charged in the outer hull of the product.
Don’t connect the ground wire to gas pipe, water pipe, telephone, lightning and other ground wires.
Leakage protector and power switch must be installed on power supply to prevent electric shock accident.
The specification of single-phase control board fuse is F3.15AL 250V,
The specification of outdoor unit control board fuse is F6.3AL 250V;
The specification of three-phase outdoor unit control board fuse is F3.15AL 250V,
The specification of fan unit control board fuse is F10AL 250V.
Reliable grounding is required, because electric shock will be caused by improper grounding.
Notice
Electrical wiring must be done in accordance with the wiring diagrams and the description herein.
Signal wire and power wire must be separated, and can’t share the same wire. It’s strictly prohibited
connecting signal wire to heavy current.
When connecting wiring and wire holder, use cable clamp to fix and make sure no exposure.
Refrigerant piping system and wiring system of indoor and outdoor unit belongs to the different system.
When power wire is parallel with signal wire, put wires to their own wire tube and remain proper gap
Voltage discrepancy between power wire terminal (side of power transformer) and end voltage (side of unit)
should be less than 2%. If its length could not be shortened, thicken the power wire.
Voltage discrepancy between phases shall be less than 2% rated value and current discrepancy between
highest and lowest phase should be less than 3% rated value.
Never connect the power supply in reversed phase. The unit can not operate normally in reversed phase. If
you connect in inversed phase, replace two of the three phases.
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