The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included. |
Scope of work: | must include: interpretation of plans and specifications principles and properties of hydronic systems, including: barriers to heat transfer conduction convection heat transfer principles of hydronic circuits principles of pressure and energy related to hydronic systems properties of water steam and gases used for hydronic systems radiation hydronic applications, which may include: chiller circuits for air conditioning and refrigeration applications concrete floor heating circuits heat removal applications manufacturing and industrial applications room heating circuits for residential, commercial and industrial heating applications timber floor heating circuits sizing and documenting layout of hydronic heating and cooling systems for residential, commercial or industrial applications for either new projects or an existing structure being renovated, extended, restored or maintained. |
Design requirements may include: | architectural plans building specifications interpretation and application of mechanical services drawings and symbols fire rating of penetrations owner requirements pipework identification specialist hydronic applications. |
Cost-benefit analysis: | compares the range of suitable materials and system choices available to enable cost-effective choices to be made without compromising integrity of project may include: design styles energy costs expected design life labour costs material costs safety factors speed of installation suitable materials system choices. |
Statutory and regulatory requirements and relevant Australian standards may include: | Acts, regulations and commonwealth, state or territory, and local government requirements industry standards National Construction Code other relevant Australian standards. |
Manufacturer requirements include: | sizing tables specifications recommended specific fixings for pipework technical and trade manuals. |
Desktop study may include collection and interpretation of data for design purposes in: | architectural and building plans developer plans manufacturer data documents, which may include: applications brochures forms policies other reports as available. |
Performance requirements must include: | hydronic heating and cooling system requirements, including temperature and safety requirements, established using relevant Australian standards, codes and manufacturer information. |
Layout of pipework systems: | must include: flow, velocity, pressure and discharge requirements established using relevant Australian standards, codes and local government authority requirements location of pipework (fire rating of enclosure) compliance with hydronic principles should not unduly affect building integrity and aesthetic appeal should have principles of economy, serviceability, durability and fit for use applied. |
Fittings and valves may include: | fittings: bends elbows tees unions couplings strainers valves: excess pressure flow and isolating pressure limiting pressure reduction. |
Pipe size requirement calculations must include: | energy flow and velocity pressure sizing temperature volume and storage. |
System components and circuits: | boilers may include: advantages and disadvantages of boiler types capacity and size coal electric energy sources fire tube gas heat exchanger methods of reducing heat losses oil packaged pressure controls and components solid fuel valves water tube factors to be considered when selecting a boiler hydronic circuit must include: circulating pump appliances flow and return pipework pipework grades valves and fittings cooling towers must include: bacteriological safety collection construction disinfection fans maintenance size sprays chillers and refrigerant plant must include: engineered systems packaged plants proprietary commercial and industrial equipment and assemblies hydronic appliances must include: calorifiers components concrete construction electronic controls heat exchangers methods of temperature and pressure control radiators timber floor heating systems types water heaters. |
Pump and compressor systems must include: | chilled water pumps circulating pumps refrigeration compressors other applications as required. |
Insulation may include: | felt fibreglass insulation protection, including: plastic sheet metal rock wool. |
Pipe supports may include: | anchors bracket spacing corrosion protection hanging brackets manufacturer-recommended specific fixings material requirements provision for expansion saddles. |
Materials may include: | copper (Cu) steel other approved materials. |
Jointing methods may include: | brazing mechanical joints threading other approved jointing methods. |
Installation requirements may include: | pipe protection, which may include: cover corrosion impact fire rating level of workmanship manufacturer-recommended specific fixings pipe support provision for expansion serviceability and access. |
Sustainability principles and concepts: | cover the current and future social, economic and environmental use of resources may include: efficient use of material efficient energy use/capital outlay comparison water efficiency reuse of water, such as rainwater, greywater and recycled non-drinking water consideration of the Green Building Council of Australia rating scheme selecting appropriate components to ensure minimal environmental impact. |
Plans: | may include: axonometrics cross-sections details elevations isometrics sections schematics, which may be produced using: computer generation drawing equipment. |
Specification may include: | bedding support flow requirements jointing manufacturer requirements materials residual pressures safety (WHS) specialised components testing valve selection water treatment workmanship. |
Testing may include: | defect inspection flow testing inspection checklist leak testing pressure testing quality assurance (QA) audit. |
Commissioning schedule must include: | system certification flue balancing flow test leak check pressure test system purge system defects system functions as per design valve operation checking fit for purpose removing contaminants. |
Operation and maintenance manual may include: | as installed drawings certification documentation check for blockages leak detection maintenance schedules manufacturer brochures and technical information regular inspection regular maintenance requirements. results of commissioning test valve function. |