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Elements and Performance Criteria

1. Prepare to design control systems for HVAC/R
   • WHS/OHS requirements and workplace procedures for a given work area are identified, obtained and applied
2. Scope of the HVAC/R system is determined from design specifications and/or in consultations with relevant person/s
3. Safety and systems are identified, obtained and applied in accordance with relevant industry standards
4. Work supervisor and/or customer/s are consulted to determine functions and parameters of the system required in accordance with design specifications and workplace documentation
5. Design development work is planned in accordance with workplace procedures for timelines in consultation with others involved
6. Design control systems for HVAC/R
   • WHS/OHS risk control measures and workplace procedures for carrying out the work are followed
7. Relevant control system components are applied to developing the system design in accordance with workplace procedures and relevant industry standards
8. Safety, functionality and budgetary considerations are incorporated into the design
9. Control equipment required is selected in accordance with design specifications and workplace procedures
10. Location of components are documented in accordance with workplace procedures and operation of system functions
11. Control system design draft is checked for compliance in accordance with the design brief and relevant industry standards
12. Control system design is documented and submitted to relevant person/s for approval
13. Unplanned events are dealt with in accordance with problem-solving techniques and workplace procedures
14. Obtain approval for control systems for HVAC/R systems design
    • Control system design is presented and explained to customer and/or relevant person/s
15. Requests for alterations to the design are negotiated with relevant person/s in accordance with workplace procedures
16. Final design is documented and approval obtained from relevant person/s
17. Quality of work is monitored in accordance with workplace procedures and 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.
Designing control systems for HVAC/R must include at least the following:	two different HVAC/R systems, including one of the following: condenser compressor evaporator associated components and controls

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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 required operating functions and parameters from the design specification developing the design within the safety, regulatory and functional requirements and budget limitations documenting and presenting design effectively successfully negotiating design alteration requests obtaining approval for final design dealing with unplanned events applying relevant work health and safety (WHS)/occupational health and safety (OHS) requirements, including using risk control measures designing control systems for heating ventilation and air conditioning/refrigeration (HVAC/R) systems preparing to design control systems for HVAC/R.

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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/R design control systems, system operating requirements, integration of electrical, electronic, pneumatic and digital controls, safe working practices and relevant standards, codes and regulations, including: control systems: control terminology control system characteristics control system diagrams and symbols types of control equipment: electrical: classification of circuits two position control floating control sensors controllers flow control devices control systems diagrams electronic: operating principles sensors controllers control system diagrams pneumatic: control fundamentals: pneumatic control terminology definitions control basics: air supply pilot bleed system signal amplifier sensing elements relays and switches air supply system: air drying methods pressure regulating valves pressure reducing valves system controllers: thermostats sensors actuators dampers system control configuration: sequence control limit control changeover control compensated control recycling control pneumatic – electric control control systems digital control systems: computer-based control fundamentals definitions principles controller configuration: equipment zone level controllers system level controllers controller software: operating software application software controller programming: system diagrams control diagrams configuration programming initialisation EMS and BMS supervisory control and data acquisition (SCADA) system lan and Bacnet applications: refrigeration systems HVAC systems: air handling system controls ventilation heating building airflow system control airflow control single and multi-zones chiller boiler and distribution system logic analysis energy management asset management life cycle supervisory: introduction building management remote building control interface and modem problem-solving techniques relevant industry standards, codes of practice, regulations and industry practices relevant job safety assessments or risk mitigation processes relevant manufacturer specifications relevant WHS/OHS legislated requirements relevant workplace budget, quality, policies and procedures relevant workplace documentation.

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