Installation and Commissioning Guide - Package Commercial Unit
Doc. Part No. 0525-055 Ver. 9 220308
Installation and Commissioning Guide
Package Commercial Unit
20
12. Electrical Installation
All electrical work must be carried out by a qualified technician. Make sure all wiring is in accordance with local wiring
rules. Wiring connections should be made in accordance with the wiring diagram provided.
DANGER
Live Electrical Supply !
• During installation of your air conditioning unit, it may be necessary to work in close proximity to live electricity. Only
qualified technicians are allowed to perform these tasks.
• Follow all electrical safety precautions when exposed to live electrical components.
• Always make sure that all power supply, including remote controls, are disconnected before performing maintenance.
Observe proper LOCK-OUT / TAG-OUT (LOTO) procedures to ensure that power cannot be inadvertently energised.
Failure to disconnect power before maintenance procedure can result in serious injury or death.
• All electrical wiring must be in accordance with the relevant electrical authority rules and regulations.
CAUTION
Live Electrical Supply !
• DO NOT handle electronic devices unless you are wearing an Anti-Static Wrist Strap that is connected to a GOOD
EARTH. Failure to protect the electronic devices from static electricity may cause unrepairable damage.
• Static damaged electronic devices are NOT COVERED for replacement under warranty.
Wiring Diagram
The wiring diagram specific for your air conditioning system is located on the inside panel of the control access door.
Always refer all wiring installation, servicing and troubleshooting of this equipment to this diagram to ensure correct
electrical connections are satisfied.
Supply Power Requirements and Procedures
It is the installer’s responsibility to provide power supply wiring to the sub-mains isolator. Wiring should conform to the
current electrical authority regulations and all wiring connections to be as per electrical diagram provided with the unit.
• Confirm that the power supply available is compatible with the unit nameplate ratings. The supply power must be
10% to -6% of the rated voltage as per AS60038.
• Protect electrical service from over current and short circuit conditions in accordance with the latest edition of the
AS/NZS 3000 “Australian / New Zealand Wiring Rules”. Protection devices are to be sized accordingly as per the
electrical specifications of the unit.
• Installer to connect an appropriate load break (AC3) isolator in sub mains wiring.
• Complete the outdoor unit power supply wiring into the sub-mains isolator.
• Secure the power cords and control cables that enters in/exits the unit. Use the cable ties provided in the electrical
panel.
• Provide proper unit earthing in accordance with local and national wiring rules.
Compressor Voltage Balance Requirement
Check the voltage at the mains supply terminals to determine if it is balanced. Voltage imbalance on three phase
systems can cause motor overheating and premature failure. The maximum allowable imbalance is + 2.0% should voltage
imbalance exceed this value, check unit wiring connections to locate and rectify faults or contact local supply authority.
