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Install and commission Type 2 gas appliances and equipment
Level
4
Credits
19
Purpose
This unit standard is for people who work in the gasfitting industry.
People credited with this unit standard are able to: prepare for the installation
of, install, and commission Type 2 gas appliances and equipment; work
safely and with care; and demonstrate knowledge of regulatory requirements,
selection of methods and materials, and underpinning concepts and
principles, as applied to the installation and commissioning of Type 2 gas
appliances and equipment.
Subfield
Plumbing, Gasfitting and Drainlaying
Domain
Gasfitting
Status
Registered
Status date
25 October 2007
Date version published
25 October 2007
Planned review date
31 December 2012
Entry information
Prerequisites: Current gasfitting certificate or licence as
issued under the Plumbers, Gasfitters, and Drainlayers
Act 2006; and Unit 21899, Identify, test, and maintain
control and safety devices in gas appliances; or
demonstrate equivalent knowledge and skills.
Accreditation
Evaluation of documentation and visit by NZQA and
industry.
Standard setting body (SSB)
The Skills Organisation
Accreditation and Moderation Action Plan (AMAP) reference
0008
This AMAP can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Special notes
1
Legislation, standards, and codes applicable to this unit standard include but are not
limited to:
Plumbers, Gasfitters, and Drainlayers Act 2006;
Health and Safety in Employment Act 1992;
Building Act 2004;
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Gas Act 1992;
Gas Regulations 1993;
Plumbers, Gasfitters, and Drainlayers Regulations 1977;
NZS 3604:1999 Timber Framed Buildings;
NZS 5261:2003 Gas installation;
NZS 5428:2006 LPG installations for non-propulsive purposes in caravans and
boats; available at http://www.standards.co.nz;
New Zealand Building Code, Clause E2 External Moisture, and Clause G11 Gas as
an Energy Source, current versions and any related compliance documents,
available at http://www.dbh.govt.nz.
Any legislation, standard, or code superseding any of the above will apply, pending
review of this unit standard.
2
Credit for this unit standard does not entitle the candidate to legally perform certain
aspects of this work unless registered or supervised by a registered person under the
provisions of the Electricity Act 1992.
3
Range
two gas cooking appliances which may include but are not limited to – domestic and
commercial ovens, ranges, grills, fryers, baking ovens, steam ovens;
two space gas heating appliances;
two central gas heating appliances;
two gas water heating appliances which may include but are not limited to –
continuous flow water heaters, storage water heaters, pool heaters, spa pool heaters,
indirect heated water heaters, boilers.
4
This unit standard requires the application of theory as included in the Plumbers,
Gasfitters, and Drainlayers Regulations 1977. These Regulations are currently under
review to align them with the newer Plumbers, Gasfitters, and Drainlayers Act 2006.
5
Definitions
Job requirements refers to specific requirements of the job at hand not covered by
job specifications.
Job specifications, for the purpose of this unit standard, refers to instructions (oral,
written, graphic) and may include any of the following: manufacturers’ instructions;
design drawing detail specifications; specifications from a specialist source such as
an architect, designer, engineer, or a supervisor; and site or work specific
requirements. Where job specifications are in conflict with applicable legislation,
standards, and/or codes, such legislation, standards, and/or codes shall take
precedence for the purpose of assessment.
Other services refers to any existing installed services.
Type 2 refers to mains power supplied electrically controlled gas appliances
generally below 250MJ per hour rated input.
Regulatory requirements, for the purpose of this unit standard, refers to applicable
legislation, standards, and codes.
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Elements and performance criteria
Element 1
Prepare for the installation of Type 2 gas appliances and equipment.
Performance criteria
1.1
Gas appliances, flues, and ventilation are selected in accordance with job
specifications and NZS 5621:2003.
1.2
Location of gas appliances, flues, and ventilation is established in accordance
with job specifications and NZS 5261:2003.
Element 2
Install Type 2 gas appliances and equipment.
Performance criteria
2.1
Gas appliances, flues, and ventilation are installed in accordance with job
specifications.
2.2
As required, flashing is installed to ensure weathertightness in accordance with
Clause E2 of the New Zealand Building Code and any related compliance
documents.
2.3
Gas appliances and associated fittings are connected to gas supply connection
points in accordance with job specifications.
2.4
Soundness tests are carried out in accordance with NZS 5261:2003.
2.5
The installation meets requirements of the Gas Regulations 1993.
Element 3
Commission Type 2 gas appliances and equipment.
Performance criteria
3.1
Gas appliance commissioning is carried out in accordance with manufacturers’
instructions.
3.2
Flues and ventilation are tested in accordance with NZS 5261:2003.
Range
3.3
smoke test or draft gauge.
Documentation is completed in accordance with job requirements.
Range
may include but is not limited to – gas certificates, guarantees,
checklists.
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3.4
Appliance use is explained to the client in accordance with Gas Regulations
1993.
Element 4
Work safely and with care.
Performance criteria
4.1
Practical activities are carried out avoiding harm to people and damage to
property, other services, materials, tools, and equipment.
Element 5
Demonstrate knowledge of regulatory requirements, selection of methods and materials,
and underpinning concepts and principles, as applied to the installation and
commissioning of Type 2 gas appliances and equipment.
Performance criteria
5.1
Applicable sections of legislation, standards, and codes are described in terms
of their application to the installation and commissioning of Type 2 gas
appliances and equipment.
5.2
Selection of methods and materials is justified.
Range
5.3
job specifications, operation of the installed gas appliances and
equipment; may include job requirements.
Underpinning concepts and principles are explained in terms of their application
to the installation and commissioning of Type 2 gas appliances and equipment.
Range
combustion, conduction, convection, dew point, heating value,
latent heat, properties of gases, radiation, vaporisation.
Please note
Providers must be 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 accredited by NZQA before they can register
credits from assessment against unit standards.
Accredited providers and Industry Training Organisations assessing against unit standards
must engage with the moderation system that applies to those standards.
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Accreditation 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 The Skills Organisation info@skills.org.nz if you wish to suggest changes
to the content of this unit standard.
 New Zealand Qualifications Authority 2016