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NZQA registered unit standard

3239 version 6 Page 1 of 3

Title

Install duct-work for heating, ventilating, and air conditioning systems 4 Credits 10

Level

Purpose

This unit standard is intended primarily for use in the training of personnel in the heating, ventilating, and air conditioning (HVAC) industry and covers installing duct-work for HVAC systems. People credited with this unit standard are able to: prepare to install duct-work; install duct-work; and install terminal fittings and components.

Classification

Mechanical Engineering > Heating, Ventilating, and Air Conditioning

Available grade Explanatory notes 1

Achieved

References Health and Safety in Employment Act 1992. ANSI/SMACNA 006-2006, HVAC Duct Construction Standards ­ Metal and Flexible, 3rd Edition. USA: Sheet Metal and Air Conditioning Contractors' National Association Inc, 2005. Definitions Industry practice refers to safe and sound practices generally accepted by competent trade persons within the HVAC industry. Specifications include technical standards, documented operating and maintenance procedures or instructions for the system, installation drawings, manufacturers' data, installation instructions, installation programme schedules, material schedules, and site instructions. Range a All evidence must comply with the relevant provisions of the Health and Safety in Employment Act 1992. b The ANSI/SMACNA 006-2006, HVAC Duct Construction Standards ­ Metal and Flexible must be complied with. c Pieces for site measure make-up include brackets, supports and extensions.

2

3

Competenz SSB Code 101571

© New Zealand Qualifications Authority 2010

NZQA registered unit standard

3239 version 6 Page 2 of 3

d

e

Evidence may be gathered by the candidate over several work sites and may need to be spread between several time periods. There typically will be jobs where part of the job is completed in conjunction with other HVAC personnel. The evidence relates to the candidates own specific work, not work jointly performed with other team members, except where the other team member is checking or assessing the candidate. Evidence of one or more jobs with a minimum combined total duct area of 300 square meters is required.

4

This unit standard is one of six designed to cover installation of HVAC systems, HVAC control systems, pipe-work, ducting, and insulation, the others being Unit 3236, Install stainless steel pipe-work for heating, ventilating, and air conditioning systems; Unit 3244, Install control components for heating, ventilating, and air conditioning systems; Unit 26327, Install pipe-work and ducting for heating, ventilating, and air conditioning systems under supervision; Unit 26333, Install external insulation to pipe-work and ducting for heating, ventilating, and air conditioning systems; and Unit 26334, Install pipe-work for heating, ventilating, and air conditioning systems.

Outcomes and evidence requirements

Outcome 1 Prepare to install duct-work. Evidence requirements 1.1 1.2 Materials on site are verified against specifications. Setting-out of job is in accordance with specifications and industry practice.

Outcome 2 Install duct-work. Evidence requirements 2.1 Hangers are installed to structural and seismic standards in accordance with specifications and industry practice. Hangers are installed and spaced in accordance with specifications and industry practice. Duct work is installed in accordance with specifications and industry practice. Installation is completed without unplanned cost or waste. Duct work is sealed and exhibits no air leakage. Installation is completed within the time frame specified.

2.2

2.3 2.4 2.5 2.6

Competenz SSB Code 101571

© New Zealand Qualifications Authority 2010

NZQA registered unit standard

3239 version 6 Page 3 of 3

Outcome 3 Install terminal fittings and components. Evidence requirements 3.1 Fittings and components are installed in accordance with specifications and industry practice. Installed fittings and components exhibit no air leakage.

3.2

Status and review information Registration date 16 July 2010 Date version published Planned review date 16 July 2010 31 December 2015

Accreditation and Moderation Action Plan (AMAP) reference 0013 This AMAP can be accessed at http://www.nzqa.govt.nz/framework/search/index.do. Please note Providers must be granted consent to assess against standards (accredited) by NZQA, or an inter-institutional body with delegated authority for quality assurance, before they can report credits from assessment against unit standards or deliver courses of study leading to that assessment. Industry Training Organisations must be granted consent to assess against standards by NZQA before they can register credits from assessment against unit standards. Providers and Industry Training Organisations, which have been granted consent and which are assessing against unit standards must engage with the moderation system that applies to those standards. Consent requirements and an outline of the moderation system that applies to this standard are outlined in the Accreditation and Moderation Action Plan (AMAP). The AMAP also includes useful information about special requirements for organisations wishing to develop education and training programmes, such as minimum qualifications for tutors and assessors, and special resource requirements. Comments on this unit standard Please contact Competenz at [email protected] if you wish to suggest changes to the content of this unit standard.

Competenz SSB Code 101571

© New Zealand Qualifications Authority 2010

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