NZQA registered unit standard
26331 version 1
Page 1 of 3
Title
Interpret heating, ventilating, and air conditioning systems drawings
Level
3
Purpose
Credits
3
This unit standard is intended primarily for use in the training of
personnel in the heating, ventilating, and air conditioning
(HVAC) industry and covers interpretation of HVAC systems
drawings.
People credited with this unit standard are able to interpret
HVAC systems drawings.
Classification
Mechanical Engineering > Heating, Ventilating, and Air
Conditioning
Available grade
Achieved
Entry information
Recommended skills
and knowledge
Recommended: Unit 2430, Draw and interpret engineering
sketches under supervision; and Unit 2432, Construct
engineering plane geometric shapes under supervision.
Explanatory notes
1
Reference
NZS 5902.5:1981, Building and civil engineering drawing practice –
Recommendations for drawings associated with engineering services operating
manuals and maintenance manuals.
2
Definition
Interpretation in this unit standard is taken to mean the explanation of the meanings
in practical terms of features shown graphically in the drawing.
3
Range
a
Drawing types and symbols used in this unit standard are as per NZS
5902.5:1981 Building and civil engineering drawing practice –
Recommendations for drawings associated with engineering services operating
manuals and maintenance manuals.
b
All required drawings will be supplied by the assessor and should be developed
on paper or cardboard.
Competenz
SSB Code 101571
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
26331 version 1
Page 2 of 3
Outcomes and evidence requirements
Outcome 1
Interpret HVAC systems drawings.
Range
interpretation from a supplied drawing or number of drawings.
Drawings include – ducting drawings, mechanical services layout, piping
arrangements, schematics, block schematics.
Evidence requirements
1.1
Drawing concepts used in supplied drawings are identified.
Range
1.2
Different types of lines are interpreted.
Range
1.3
visible at low level, visible at high level, concealed at high level,
concealed at low level, vertical concealed, vertical visible, external.
Different types of pipe and ducts are interpreted.
Range
1.4
concepts may include – scale, third angle projection, first angle
projection, isometric drawing, oblique drawing.
round, square, uninsulated, insulated.
HVAC system components are identified by sight and associated information
interpreted.
Range
system components may include – cooling towers, air handling
units, cooling and heating coils, fans, furnaces, pumps, dampers,
filters, compressors, condensers, chillers, thermostats, controllers,
sensors, diffusers, evaporators, valves, meters, grilles, ducts, air
drives, fan coil unit.
Evidence of 15 components is required.
Associated information may include – air flow, water flow, pipe
pressure, component manufacturer’s designations, directional
characteristics.
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
26331 version 1
Page 3 of 3
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