DC Inverter Chiller
50
4 Electrical Wiring
4.1 General
4.2
Precautions
The chiller should apply special power supply, whose voltage should conform to rated voltage.
Wiring construction must be conducted by the professional technicians according to the labeling on the circuit
diagram.
Only use the electric components specified by our company, and require installation and technical services from the
manufacturer or authorized dealer. If wiring connection fails to conform to electric installation norm, failure of the
controller, electronic shock, and so on may be caused.
The connected fixed wires must be equipped with full switching-off devices with at least 3mm contact separation.
Set leakage protective devices according to the requirements of national technical standard about electric equipment.
After completing all wiring construction, conduct careful check before connecting the power supply.
Please carefully read the labels on the electric cabinet.
The user’s attempt to repair the controller is prohibited, since improper repair may cause electric shock, damages to
the controller, and so on. If the user has any requirement of repair, please contact the maintenance center.
4.3
Requirements of Wiring Connection
No additional control components are required in the electric cabinet (such as relay, and so on), and the power supply
and control wires not connected with the electric cabinet are not allowed to go through the electric box. Otherwise,
electromagnetic interference may cause failure of the unit and control components and even damages to them, which thus
lead to protective failure.
All cables led to the electric box should be supported independently but by the electric box.
The strong current wires generally pass the electric box, and 220V alternating current may also pass the control board,
so wiring connection should conform to the principle of separation of strong current and weak current, and the wires
of power supply should be kept more than 100 mm away from the control wires.
Only use 380-415V 3Ph~ 50Hz rated power supply for the unit, and the maximum allowable range of voltage is
342V-418V.
Notes for installers
Caution
All installation and wiring must be carried out by competent and suitably qualified, certified and accredited
professionals and in accordance with all applicable legislation.
Electrical systems should be grounded in accordance with all applicable legislation.
Overcurrent circuit breakers and residual-current circuit breakers (ground fault circuit interrupters) should be
used in accordance with all applicable legislation.
Wiring patterns shown in this data book are general connection guides only and are not intended for, or to
include all details for, any specific installation.
The water piping, power wiring and communication wiring are typically run in parallel. However the
communication wiring should not be bound together with power wiring. To prevent signal interference, the
power wiring and communication wiring should not be run in the same conduit. If the power supply is less
than 10A, a separation of at least 300mm between power wiring and communication wiring conduits should
be maintained; if the power supply is in the range 10A to 50A then a separation of at least 500mm should be
maintained.
