This unit involves the skills and knowledge required to select residential air conditioning system equipment, components and accessories.

It includes selecting residential air conditioning equipment, pipe work, air distribution components and controls. It also includes selecting the unitary air conditioning equipment and components, system controls, refrigerant and condensate pipe work based on specifications, industry standards and manufacturer catalogues to determine calculated and deemed-to-comply solutions and documenting all selection information.

The skills and knowledge described in this unit may, in some jurisdictions, require a licence or permit to practice in the workplace subject to regulations for undertaking refrigeration and air conditioning work. Practice in the workplace and during training is also subject to work health and safety (WHS)/occupational health and safety (OHS) regulations.

No other licensing, legislative or certification requirements apply to this unit at the time of publication.

ELEMENTS

PERFORMANCE CRITERIA

Elements describe the essential outcomes.

Performance criteria describe the performance needed to demonstrate achievement of the element.

1.2

Air conditioning system safety and regulatory compliance requirements are identified and applied

2

Develop compliance pipe work arrangements

2.1

Location of air conditioning equipment is determined from regulatory requirements, job specifications and site drawings

2.2

Air conditioning pipe work is arranged to ensure safe and functional operation of the system

2.3

Air conditioning system pipe work is arranged to comply with technical industry standards, job specifications and requirements

3

Select residential air conditioning system equipment and components

3.1

Pipe and tubing are selected for suitability for the residential environments it is to be installed

3.2

Pipe and tubing are sized to meet air conditioning parameters and capacity requirements for the refrigerant to be used

3.3

Pipe and tubing quantities are determined from equipment location diagrams and job specifications

3.4

Air conditioning unitary equipment and components are selected to meet load requirements based on calculated or deemed-to-comply solutions

3.5

Air distribution components and controls are selected to meet functional, specified and regulatory requirements

3.6

Automatic control devices are selected to meet functional, specified regulatory requirements, current voltage and IP ratings

3.7

Evidence is obtained that the selected air conditioning equipment and components comply with job requirements and industry standards

4

Document selection of system equipment and components

4.1

Reasons for selections made, including calculations, are documented in accordance with workplace procedures

4.2

Air conditioning installation arrangement and specifications for selected items are documented in accordance with workplace procedures and forwarded to appropriate person/s

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:

arranging pipe work to comply with regulatory and functional requirements

selecting appropriate type, size and quantity of pipe and tubing

selecting air conditioning unitary equipment and components that meets load requirements

selecting air distribution components and controls that meets load requirements

selecting automatic control devices that meet functional and regulatory requirements

documenting pipe work arrangement, specification for items selected and reasons for the selections made

dealing with unplanned events

applying relevant work health and safety (WHS)/occupational health and safety (WHS/OHS) requirements and workplace procedures and practices, including using risk control measures

applying sustainable energy principles and practices.

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:

air conditioning system equipment, component selection, components and piping selection, safe working practices and relevant standards, codes and regulations, including:

residential air conditioning unitary equipment:

construction, operation, application and selection of:

room air conditioners

split systems – wall hang, cassettes and ducted

small package units

cooling only and reverse cycle

line sizing and design:

quick selection tables

velocity tables

pressure drop in lines and fittings

oil migration stabilisation

effect of varying system capacity

oil traps

liquid migration

control systems:

construction, operation, application and selection of:

cycling and safety controls

pressure-stats

thermostats

de-ice controls

air conditioning automation systems

control strategies

air distribution:

principles:

factors affecting the design of ductwork systems

flexible ductwork systems

static, velocity and total pressure

pressure loss:

friction and dynamic

in ducts, friction charts

in fittings, loss coefficients

diffuser pressure loss

system sizing:

standard duct sizes and gauges

duct selection

fitting selection

air diffuser selection

balancing

relevant industry standards, including industry practices and technologies

relevant job safety assessments or risk mitigation processes

relevant manufacturer specifications

relevant WHS/OHS legislated requirements

relevant workplace documentation

relevant workplace policies and procedures.

Assessors must hold credentials specified within the Standards for Registered Training Organisations current at the time of assessment.

Assessment must satisfy the Principles of Assessment and Rules of Evidence and all regulatory requirements included within the Standards for Registered Training Organisations current at the time of assessment.

Assessment must occur in workplace operational situations where it is appropriate to do so; where this is not appropriate, assessment must occur in simulated workplace operational situations that replicate workplace conditions.

Assessment processes and techniques must be appropriate to the language, literacy and numeracy requirements of the work being performed and the needs of the candidate.

Resources for assessment must include access to:

a range of relevant exercises, case studies and/or other simulations

relevant and appropriate materials, tools, equipment and personal protective equipment (PPE) currently used in industry

applicable documentation, including workplace procedures, equipment specifications, regulations, codes of practice and operation manuals.

Foundation skills essential to performance are explicit in the performance criteria of this unit of competency.

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.

Selecting residential air conditioning equipment and components, pipe work, air distribution components and controls must include at least the following:

two different air conditioning systems, including:

unitary air conditioning equipment and components

system controls

refrigerant and condensate pipe work

air distribution system and components

Electrotechnology

Refrigeration and air-conditioning