Unit of competency Outline
Date retreived
22/07/2026 4:34 PM AWST
22/07/2026 4:34 PM AWST
Whilst all efforts are made to provide accurate and timely information from the relevant source/documentation, please be aware that the information supplied may not be the most current version. The accuracy of the detail has not been confirmed by the Department and therefore should not be relied upon without first confirming the contents.
Install, commission, service and maintain variable refrigerant flow air conditioning systems
Install, commission, service and maintain variable refrigerant flow air conditioning systems
Unit of competency
National Code
UEERA0097
UEERA0097
State Code
ODP05
ODP05
TGA Status
Current
Current
DTWD Status
Approved
Approved
State Implementation and Classification
Approved Date
07/02/2022
Field of Education
031315 - Refrigeration And Air Conditioning Mechanics
Original Release Date
07/02/2022
Nominal Hours
35
Description
This unit involves the skills and knowledge required to safely and effectively install, commission, service and maintain variable refrigerant flow (VRF) air conditioning systems.It includes sourcing relevant data and schematics; installing components, pipe work, accessories and controls; commissioning the system to ensure it operates at the specified design conditions; locating and rectifying faults; and, carrying out maintenance tasks.VRF systems are commonly found in commercial applications. They contain one or more outdoor units with multiple indoor units. Each indoor unit typically has its own metering device and shares a common pipework system. They are either heat pump or heat recovery systems. Heat pump systems will only allow indoor units to operate in the same mode (either heating or cooling). A heat recovery system will allow each indoor unit to operate in a different mode (either heating or cooling) from the same system by the use of a branch box.The skills and knowledge in this unit of competency will be applied by refrigeration and air conditioning technicians during the installation, commissioning and servicing of VRF air conditioning systems.The skills and knowledge described in this unit require a current national Trainee or Full Refrigerant Handling Licence as it includes work on refrigeration and air conditioning equipment that carries the risk of a fluorocarbon refrigerant being emitted while decanting, manufacturing, installing, commissioning, servicing, maintaining or decommissioning activities are being carried out.Competency development activities in this unit are subject to regulations directly related to licensing. Where a licence or permit to practice is not held, skills and knowledge described in this unit require a relevant contract of training, such as an Australian Apprenticeship.Additional and/or other conditions may apply in some jurisdictions subject to regulations related to refrigeration, air conditioning and electrical work. Practice in the workplace and during training is also subject to work health and safety (WHS)/occupational health and safety (OHS) regulations.
Notes
Elements and Performance Criteria
1 Prepare to work on variable refrigerant flow (VRF) air conditioning systems
- 1.1 WHS/OHS risk control measures and procedures for carrying out the work are obtained and implemented in accordance with workplace procedures and regulatory requirements
- 1.2 Work details are determined from documentation and/or supervisor to establish scope of work to be completed in accordance with workplace procedures
- 1.3 Relevant manufacturer specifications and worksite plans are interpreted and incorporated in work planning
- 1.4 Components, piping, accessories, controls and consumables for the work are obtained and checked against job requirements in accordance with Australian Standards and codes of practice
- 1.5 Tools, equipment and testing devices to complete work are obtained and checked for operational safety in accordance with workplace procedures
2 Install VRF air conditioning systems
- 2.1 The location and orientation of branching and support of pipe work is determined and laid out in accordance with system design
- 2.2 Major components are securely mounted in the locations identified by the documentation or the supervisor in accordance with workplace procedures and regulatory requirements
- 2.3 Refrigerant pipework and associated components are installed and tube cleanliness is maintained at all times in accordance with workplace procedures, Australian Standards and manufacturer specifications
- 2.4 Condensate pipework is installed and tested in accordance with design, Australian Standards and manufacturer specifications
- 2.5 Communication wiring is checked to ensure it conforms to manufacturer circuit diagram, specifications and Australian Standards
- 2.6 Pressure testing of the installed components and pipe work is conducted to the required level for the type of refrigerant being used in accordance with relevant Australian Standards, codes of practices and workplace procedures
- 2.7 Leaks are located and rectified employing appropriate methods in accordance with relevant Australian Standards, codes of practices and workplace procedures
- 2.8 Air conditioning system is evacuated to remove moisture and other contaminants in accordance with relevant Australian Standards, codes of practices and workplace procedures
- 2.9 Vacuum drop test is carried out to verify all moisture and other contaminants have been removed from the system in accordance with relevant Australian Standards, codes of practices and workplace procedures
3 Commission VRF air conditioning systems
- 3.1 Extra refrigerant charge quantity is documented in accordance with Australian Standards and manufacturer specifications
- 3.2 Measurements are obtained using manufacturer diagnostic tools and recorded to confirm system operation is in accordance with the system’s design and manufacturer specifications
- 3.3 Measurements are obtained and recorded to confirm that operating voltage and current are within manufacturer specifications
4 Locate and rectify faults on VRF air conditioning systems
- 4.1 Fault diagnosis processes are carried out in accordance with manufacturer processes and specifications, relevant Australian Standards, codes of practices and workplace procedures
- 4.2 Required repairs are identified and reported in accordance with manufacturer processes, relevant Australian Standards, codes of practices and workplace procedures
- 4.3 Routine maintenance requirements are identified in accordance with relevant Australian Standards and workplace procedures
5 Complete work and report activities
- 5.1 WHS/OHS risk control measures continue to be applied in accordance with workplace procedures and regulatory requirements
- 5.2 Worksite and equipment are cleaned and made safe in accordance with workplace procedures
- 5.3 Required documentation is completed in accordance with relevant regulations, Australian Standards and codes of practice
- 5.4 Supervisor is notified of task completion in accordance with workplace procedures
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