General Check; Electrical Wiring Connection - Hisense AVWW-76FKFW Installation And Maintenance Manual

8.1

General Check

(1) Make sure that the field-supplied electrical components (main power switches, circuit breakers, wires,
conduit connectors, and wire terminals) are properly selected according to the electrical characteristics
indicated in Table 8.1. Make sure that the components comply with local codes.
• Supply electrical power to each water source unit. This equipment can be installed with an ELB,
which is a recognized measure for added protection to a properly grounded unit. Install appropriate
sized breakers / fuses / overcurrent protection switches and wiring in accordance with local codes.
The equipment installer is responsible for understanding and abiding by applicable codes and
requirements.
• Supply power supplies for the indoor unit and water source unit respectively.
Connect the power supply wiring to each indoor unit group and its respective water source unit. This
equipment can be installed with an ELB, which is a recognized measure for added protection to a
properly grounded unit. Install appropriate sized breakers / fuses / overcurrent protection switches
and wiring in accordance to local codes. The equipment installer is responsible for understanding and
abiding by applicable codes.
• As for the heat recovery system, the power supply for the Switch Box and Indoor Unit in the same
refrigerant system can be supplied with one main switch.
(2) Check to ensure that the power supply voltage is within ±10% of the rated voltage.
If the power supply voltage is too low, the system cannot start due to the voltage drop.
(3) Check the size of the electrical wires.
(4) Communication cable must be a minimum of AWG18 (0.82mm
Shielded cable must be considered for applications and routing in areas of high EMI and other sources
of potentially excessive electrical noise to reduce the potential for communication errors. When shielded
cable is applied, secure properly and terminate cable shield as required per Hisense guidelines. Plenum
and riser ratings for communication cables must be considered per application and local codes where:
• The power supply for the packaged air conditioner is supplied from the same power transformer as the
device with high electricity consumption*
• The power supply wiring for the device* and for the packaged air conditioner are located close to each
other.
* Example: Lift, container crane, rectifier for electric railway, inverter power device, arc furnace,
electric furnace, large-sized induction motor, and large-sized switch.
In the instances mentioned above, an induction surge of the power supply wiring for the packaged air
conditioner could occur due to a rapid change in electricity consumption of the device and activation
of the switch. Therefore, check the local codes before performing electrical work in order to protect the
power supply wiring of the packaged air conditioner.
(5) Check to ensure that the ground wiring for the water source unit and indoor unit are connected.
8.2

Electrical Wiring Connection

● This equipment can be installed with an ELB, which is a recognized measure for added
protection to a properly grounded unit. Install appropriate sized breakers / fuses / overcurrent
protection switches and wiring in accordance to local codes and requirements. The equipment
installer is responsible for understanding and abiding by applicable codes and requirements.
● Perform the electrical work according to the regulations of each region and this manual.
A separate, dedicated electrical circuit must be used. If the electrical wiring work is performed
incorrectly or there is a capacity shortage of the power circuit, it will cause an electric shock or a
fire.
● Check that the ground wire is securely connected. If the unit is not correctly grounded, it may lead
to an electrical shock.
Do not connect the ground wiring to gas piping, water piping, lighting conductor, or telephone
ground cables.
32
2
), 2-Conductor, Stranded Copper.