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Elements and Performance Criteria

1. Prepare to analyse the operation of HVAC air and hydronic systems
   • WHS/OHS processes and procedures for a given work area are identified, obtained and applied
2. WHS/OHS risk control measures and workplace procedures are followed in preparation for the work
3. Operating analysis is determined from performance specifications, situation reports and consultations with relevant person/s
4. Activities are planned to meet scheduled timelines in accordance with workplace procedures and consultations with others involved in the work
5. Strategies are formed for solution development and implementation is carried out in accordance with workplace procedures
6. Analyse the operation of systems
   • WHS/OHS risk control measures and workplace procedures for carrying out the work are followed
7. Principles of HVAC air and hydronic systems operating parameters are applied to analytical solutions to refrigeration and air conditioning systems
8. Parameters, specifications and performance requirements in relation to HVAC air and hydronic systems are obtained in accordance with workplace procedures
9. Analysis of operating parameters is carried out to provide solution in accordance with workplace procedures
10. Unplanned events are dealt with safely in accordance with relevant industry standards and workplace procedures
11. Quality of work is monitored in accordance with workplace procedures and relevant industry standards
12. Report on results of operation systems analysis and actions taken
    • Results of system operating analysis are evaluated to determine performance requirements in accordance with workplace procedures and performance specifications
13. Analysis, findings, calculations and assumptions are documented in accordance with workplace procedures
14. Analysis is reported to relevant person/s to determine relevant action in accordance with workplace procedures
15. Justification for findings and actions to be undertaken in relation to equipment is documented in relevant work/project and/or development records in accordance with relevant industry standards

Range Statement

Range is restricted to essential operating conditions and any other variables essential to the work environment. Non-essential conditions may be found in the UEE Electrotechnology Training Package Companion Volume Implementation Guide.
Analysing operating parameters must include at least the following:	two different HVAC systems

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Performance Evidence

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements, performance criteria and range of conditions on at least one occasion and include:

understanding the operating performance forming effective strategies for analysing air conditioning systems performance obtaining operating parameters, specifications and performance requirements appropriate to each situation evaluating the results of the analysis documenting analysis details of all findings, calculations and assumptions documenting justification of actions to be implemented in accordance with professional standards dealing with unplanned events analysing the operation of heating, ventilation and air conditioning (HVAC) air and hydronic systems applying relevant work health and safety (WHS)/occupational health and safety (OHS) requirements, including using risk control measures preparing to analyse the operation of HVAC air and hydronic systems.

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Knowledge Evidence

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements, performance criteria and range of conditions and include knowledge of:

HVAC air systems, safe working practices and relevant standards, codes and regulations, including: air distribution principles: air diffuser selection factors affecting the design of ductwork systems types of ductwork systems static, velocity and total pressure laminar and turbulent flow moody diagram parameters that control cost pressure loss: friction and dynamic colebook - White formula in ducts and friction charts in fittings and loss co-efficient fitting selection criteria diffuser pressure loss system sizing: velocity method equal friction method static regain method balanced pressure drop method circular to rectangular equivalent standard duct sizes and gauges balancing heat and leakage losses: heat gain/loss calculation bare vs. insulated leakage overview of noise in duct systems: noise sources in duct systems attenuation impact on design methods of control fans: types and characteristics fan laws system effect fan selection fan and system curves air systems: dual and single duct constant volume variable volume induction units multi-zone diversity factors HVAC systems HVAC hydronic systems, safe working practices and relevant standards, codes and regulations, including: systems operation closed/open systems pump head/lift and static head (high-rise building) system friction losses nett positive suction head system curves pumps: types selection criteria performance characteristics bladder tanks coil characteristics heat exchangers: plate, shell and tube, and tube in tube flow measurements: types flow switchers builders: types and performance characteristics cooling towers: elementary cooling thermodynamics and types valves - flow control devices: types and applications throttling characteristics flow measurements selection and applications piping systems: balancing and commissioning air venting water treatment vacuum breaking and air breaks relevant industry standards relevant job safety assessments or risk mitigation processes relevant manufacturer specifications relevant WHS/OHS legislated requirements relevant workplace documentation relevant workplace quality, policies and procedures.

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