NZQA registered unit standard
Title
26329 version 1
Page 1 of 5
Pre-commission and maintain heating, ventilating, and air conditioning systems under supervision
Level
Purpose
3 Credits 15
This unit standard is intended primarily for use in the training of personnel in the heating, ventilating, and air conditioning
(HVAC) and covers pre-commissioning and maintenance of
HVAC systems.
People credited with this unit standard, under supervision are able to: pre-commission water based and non-water based
HVAC systems; and demonstrate HVAC maintenance procedures.
Classification Mechanical Engineering > Heating, Ventilating, and Air
Conditioning
Available grade Achieved
Explanatory notes
1 Reference
Health and Safety in Employment Act 1992.
2 The skills of this unit standard are expected to be demonstrated under supervision by the candidate’s supervisor.
3 Definitions
Chilled water systems include plain water, brine, and glycol 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.
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.
Potable hot and cold water systems include commercial, industrial, and 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 2020

NZQA registered unit standard 26329 version 1
Page 2 of 5
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.
4 Range a All evidence must comply with the relevant provisions of the Health and Safety in Employment Act 1992. b 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 26339, Pre-commission heating, ventilating, and air conditioning systems and Unit 26330, Commission heating, ventilating, and air conditioning systems.
1.4
1.5
1.6
1.7
1.2
1.3
Outcome 1
Pre-commission water based HVAC systems under supervision.
Range evidence of pre-commissioning of a hot water heating system, a chilled water system, a potable hot and cold water system, a condenser water system is required.
Evidence requirements
1.1 Pre-commissioning procedures are planned with reference to specifications and confirmed with supervisor.
Installation of system is checked for compliance with specifications.
Services supplies are checked in accordance with specifications.
Range electrical, water, gas.
Internal cleanliness of plant meets requirements in specifications.
Cleanliness of strainers is verified in accordance with specifications.
Correct rotation of motors is verified in accordance with specifications.
Visual checks confirm that circuit protective devices match motor name plate details.
1.8 Control functions are verified against requirements in specifications.
Competenz
SSB Code 101571

New Zealand Qualifications Authority 2020

NZQA registered unit standard
1.9
26329 version 1
Page 3 of 5
Any non-completions of system are notified in accordance with industry practice.
1.10 Completion of system in accordance with specifications is organised and followed up in accordance with industry practice.
1.11 The system is verified as being ready to run for commissioning in accordance with specifications and supervisor’s instructions.
1.12 Pre-commissioning report is completed and actioned in accordance with supervisor’s instructions and industry practice.
Outcome 2
2.5
2.6
2.7
Pre-commission non-water based HVAC systems under supervision.
Range evidence of pre-commissioning of a ventilation and air conditioning system, a steam and condensate system, a gas system, an industrial liquids system, a fume cupboard is required.
Evidence requirements
2.1 Pre-commissioning procedures are planned with reference to specifications and confirmed with supervisor.
2.2 Installation of system is checked for compliance with specifications.
2.3 Services supplies are checked in accordance with specifications.
Range electrical, water, gas.
2.4 Internal cleanliness of plant and, if applicable, duct work meets requirements in specifications.
Cleanliness of filters is verified in accordance with specifications.
Correct rotation of motors is verified in accordance with specifications.
Visual checks confirm that circuit protective devices match motor name plate details.
2.8
2.9
Control functions are verified against requirements in specifications.
Any non-completions of system are notified in accordance with industry practice.
2.10 Completion of system in accordance with specifications is organised and followed up in accordance with industry practice.
2.11 The system is verified as being ready to run for commissioning in accordance with specifications and supervisor’s instructions.
Competenz
SSB Code 101571

New Zealand Qualifications Authority 2020

NZQA registered unit standard
2.12
26329 version 1
Page 4 of 5
Pre-commissioning report is completed and actioned in accordance with supervisor’s instructions and industry practice.
Outcome 3
Demonstrate HVAC maintenance procedures under supervision.
Evidence requirements
3.1 Maintenance procedures are planned with reference to specifications and confirmed with supervisor.
3.2 Maintenance of an HVAC system is conducted.
Range testing of controls; air filter cleaning procedure; strainer cleaning procedure; cooling tower testing, dosing, six monthly procedures; inspection and testing of fire dampers and duct heaters; inspection and maintenance of burners; maintenance of steam systems.
3.3 Maintenance documentation is completed to reflect actions taken in accordance with company practice.
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 2020

NZQA registered unit standard 26329 version 1
Page 5 of 5
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 2020