NZQA registered unit standard
26327 version 1
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Title
Install pipe-work and ducting for heating, ventilating, and air
conditioning systems under supervision
Level
3
Purpose
Credits
7
This unit standard is intended primarily for use in the training of
personnel in the heating, ventilating, and air conditioning
(HVAC) industry and covers installation of pipe-work and
ducting for HVAC systems.
People credited with this unit standard are able to: demonstrate
knowledge of pipe-work and ducting and ducting fittings used in
HVAC systems; and under supervision: prepare to install,
install, and test pipe-work for HVAC systems; prepare to install,
and install ducting for HVAC systems; and install terminal
fittings and components for HVAC systems.
Classification
Mechanical Engineering > Heating, Ventilating, and Air
Conditioning
Available grade
Achieved
Explanatory notes
1
The skills of outcomes 3, 4, 5, 6, 7, and 8 are expected to be demonstrated under
supervision by the candidate’s supervisor.
2
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.
3
Range
a
Pipe-work for outcomes 1, 3, 4, 5 – steel pipe, plastic pipe, copper pipe,
stainless steel.
b
Pipe-work joining methods for outcomes 1, 3, 4, 5 – brazing, welding, plastic
welding, cementing.
Competenz
SSB Code 101571
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
c
d
4
26327 version 1
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Evidence for outcomes 3,4,5,6,7, and 8 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 pipe length of
22.5 linear meters and a minimum combined total duct area of 45 square
metres is required.
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 3239, Install duct-work for heating, ventilating, and air conditioning
systems; Unit 3244, Install control components for heating, ventilating, and air
conditioning systems; Unit 26333, Install external insulation to pipe-work and ducting
for heating, ventilating, and air conditioning systems; and Unit 26334, Install pipework for heating, ventilating, and air conditioning systems.
Outcomes and evidence requirements
Outcome 1
Demonstrate knowledge of pipe-work used in HVAC systems.
Evidence requirements
1.1
Pipe parameters are identified in accordance with industry practice.
Range
1.2
application, wall thickness, pressure, temperature, nominal bore,
material.
Methods of joining and bending pipe-work are described with reference to
principles and tools and in accordance with industry practice.
Range
methods of joining – welding, brazing, plastic welding, cementing,
threading, grooved fittings, flanges.
1.3
Support of pipe-work using hangers is described in accordance with industry
practice.
1.4
Effects of different environmental conditions on pipe-work are identified and
their treatment is described.
Range
Competenz
SSB Code 101571
environmental conditions – temperature variation, corrosion,
freezing, seismic activity.
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
26327 version 1
Page 3 of 6
Outcome 2
Demonstrate knowledge of ducting and ducting fittings used in HVAC systems.
Evidence requirements
2.1
Ducting parameters are identified in accordance with industry practice.
Range
2.2
application, gauge thickness, operating pressure, material,
nomenclature, size.
Methods of joining and strengthening are described with reference to principles
and tools and in accordance with industry practice.
Range
lock-forms, seams, seam-locks, flanges, plastic welding,
cementing, cross-breaking, strengthening.
2.3
Support of ducting using hangers is described in accordance with industry
practice.
2.4
Effects of different environmental conditions on ducting are identified and their
treatment is described.
Range
environmental conditions – temperature variation, corrosion,
seismic activity.
Outcome 3
Prepare to install pipe-work under supervision.
Evidence requirements
3.1
Materials required for job match specifications and supervisor’s instructions.
3.2
Quantities of materials are checked against specifications.
3.3
Setting out of job is in accordance with specifications, supervisor’s instructions,
and industry practice.
Outcome 4
Install pipe-work under supervision.
Evidence requirements
4.1
Hangers are installed to structural and seismic standards in accordance with
specifications, supervisor’s instructions and industry practice.
4.2
Pipes are cut, assembled, and joined in accordance with industry practice,
supervisor’s instructions and specifications, and are purged or flushed if
applicable.
Competenz
SSB Code 101571
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
26327 version 1
Page 4 of 6
4.3
Hangers and pipes are installed and spaced in accordance with specifications
and supervisor’s instructions.
4.4
Installation is completed in accordance with industry practice.
Range
ready for commissioning and maintenance, checks on controls are
completed, checks that no conflicts exist, checks that the overall
system works.
Outcome 5
Test pipe-work under supervision.
Evidence requirements
5.1
Tests establish that operational requirements have been met in accordance with
specifications.
Range
5.2
visual test, pressure test, leakage test;
test equipment – manometer, data-logger.
Test record is produced and recorded in accordance with supervisor’s
instructions.
Outcome 6
Prepare to install ducting under supervision.
Evidence requirements
6.1
Materials required for job match specifications and supervisor’s instructions.
6.2
Quantities of materials are checked against specifications.
6.3
Setting-out of job is in accordance with specifications, supervisor’s instructions,
and industry practice.
Outcome 7
Install ducting under supervision.
Evidence requirements
7.1
Hangers are installed to structural and seismic standards in accordance with
specifications, supervisor’s instructions and industry practice.
7.2
Hangers are installed and spaced in accordance with specifications,
supervisor’s instructions, and industry practice.
Competenz
SSB Code 101571
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
7.3
26327 version 1
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Installation is completed in accordance with industry practice.
Range
ducting is sealed and exhibits no air leakage, system is ready for
commissioning and maintenance, checks on controls are
completed, checks that no conflicts exist, checks that the overall
system works.
Outcome 8
Install terminal fittings and components under supervision.
Evidence requirements
8.1
Fittings and components are installed in positions in accordance with
specifications, supervisor’s instructions and industry practice.
8.2
Fittings and components are installed to industry standards in accordance with
specifications.
8.3
Manometers and pitot tubes exhibit no air leakage.
Status and review information
Registration date
16 July 2010
Date version published
16 July 2010
Planned review date
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.
Competenz
SSB Code 101571
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
26327 version 1
Page 6 of 6
Comments on this unit standard
Please contact Competenz at qualifications@competenz.org.nz if you wish to suggest
changes to the content of this unit standard.
Competenz
SSB Code 101571
 New Zealand Qualifications Authority 2016