NZQA registered unit standard
26339 version 1
Page 1 of 4
Title
Pre-commission heating, ventilating, and air conditioning systems
Level
4
Purpose
Credits
20
This unit standard is intended primarily for use in the training of
personnel in the heating, ventilating, and air conditioning
(HVAC) industry and covers pre-commissioning of HVAC
systems.
People credited with this unit standard are able to: check
installation, connections and cleanliness of HVAC systems;
check systems operation and completion; and record and
report on the systems.
Classification
Mechanical Engineering > Heating, Ventilating, and Air
Conditioning
Available grade
Achieved
Explanatory notes
1
Reference
Health and Safety in Employment Act 1992.
2
Definitions
Air conditioning and ventilation systems include large central air conditioning
systems, ducted constant-flow rate and variable-flow rate air conditioning systems,
packaged and split air conditioning, heat pumps, supply and extract ventilation
systems, fume ventilation, and industrial ventilation systems.
Company practice refers to operational procedures put in place by the candidate’s
employer. These include site safety procedures, equipment operating procedures,
job procedures, quality assurance, and procedures for the purchase, handling and
disposal of equipment and components.
Chilled water systems include plain water, brine, and glycol systems.
Hot water heating systems include low, medium, and high temperature systems.
Industrial liquids may include acids, alkalis, detergents, printing inks, and food
products.
Industry practice refers to safe and sound practices generally accepted by competent
trade persons within the HVAC industry.
Materials handling systems include systems to duct fluids, gases and particles.
Potable hot and cold water systems include commercial, industrial or institutional
systems larger than domestic systems.
Pre-commissioning includes those checks and procedures required to ensure proper
equipment functionality and integration of components.
Competenz
SSB Code 101571
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
26339 version 1
Page 2 of 4
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.
Steam and condensate systems include systems that use gas, coal, oil, or electricity
as fuel sources for the heating system components.
Systems for gases include medical gases, LPG, CNG, oxygen, acetylene,
compressed air, and natural gas.
3
Range
a
All evidence must comply with the relevant provisions of the Health and Safety
in Employment Act 1992.
b
HVAC systems – evidence is required of an air conditioning and ventilation
system, a chilled water system, and a hot water heating system, and one from –
an industrial liquid system, a potable hot and cold water system, a steam and
condensate system, a system for gases.
c
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.
5
This unit standard is one of three designed to cover pre-commissioning and
commissioning of HVAC systems, the others being Unit 26329, Pre-commission and
maintain heating, ventilating, and air conditioning systems under supervision and Unit
26330, Commission heating, ventilating, and air conditioning systems.
Outcomes and evidence requirements
Outcome 1
Check installation, connections, and cleanliness of HVAC system.
Evidence requirements
1.1
Installation of system is checked for compliance with specifications.
1.2
Services supplies are checked in accordance with specifications.
Range
electrical, water, gas.
1.3
Internal cleanliness of duct-work and plant meets specifications and is in
accordance with industry practice.
1.4
Cleanliness of filters is verified in accordance with specifications and industry
practice.
Competenz
SSB Code 101571
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
26339 version 1
Page 3 of 4
Outcome 2
Check system operation and completion.
Evidence requirements
2.1
Correct rotation of motors is verified in accordance with specifications and
industry practice.
2.2
Circuit protective devices are verified as matching motor name plate details.
2.3
Control functions are verified against specifications.
2.4
Completion of system in accordance with specifications is organised and
followed up in accordance with company practice, and any non completions
notified where necessary.
2.5
The system is verified as being ready to run for commissioning in accordance
with company practice.
Outcome 3
Record and report on the system.
Evidence requirements
3.1
System compliance with pre-commissioning requirements is recorded in
accordance with specifications.
3.2
Pre-commissioning report is completed and actioned in accordance with
specifications and company practice.
Replacement information
This unit standard replaced unit standard 3246, unit
standard 3247, unit standard 3248, unit standard 3249,
unit standard 3250, unit standard 3251, unit standard
3252, and unit standard 3253.
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.
Competenz
SSB Code 101571
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
26339 version 1
Page 4 of 4
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 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