NZQA Expiring unit standard
3221 version 6
Page 1 of 3
Title
Maintain potable hot and cold water systems
Level
4
Credits
10
Purpose
This unit standard is for people who work, or intend to work, in
the heating, ventilation and air conditioning sector of the
engineering industry. People credited with this unit standard
are able to: prepare maintenance schedules for a potable hot
and cold water system; inspect and carry out maintenance on
the potable hot and cold water equipment and plant; check the
controls function; monitor maintenance of the system; and
complete maintenance documentation.
Classification
Mechanical Engineering > Heating, Ventilating, and Air
Conditioning
Available grade
Achieved
Entry information
Critical health and
safety prerequisites
Prerequisite: Unit 3201, Integrate potable hot and cold water
systems components, or demonstrate equivalent knowledge
and skills.
Explanatory notes
1
Legislation, regulations and building codes pertaining to the maintenance of
mechanical services are to be complied with.
2
For credit, evidence must be gained of meeting the required standards in
commercial, industrial or institutional systems larger than domestic systems.
3
System documents include documented operating and maintenance procedures and
instructions for the system, including manufacturer’s specifications and companyprepared operating and maintenance manuals.
Competenz
SSB Code 101571
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
3221 version 6
Page 2 of 3
Outcomes and evidence requirements
Outcome 1
Prepare maintenance schedules for a potable hot and cold water system.
Evidence requirements
1.1
Maintenance schedules and report formats for the system are prepared in
accordance with company policies and procedures, and meet client’s
requirements.
1.2
Maintenance schedules and reports comply with legislative and regulatory
requirements and are consistent with building code standards.
1.3
Maintenance schedules and reports comply with operating and maintenance
specifications laid down in system documents.
Outcome 2
Maintain potable hot and cold water system components, controls and operation.
Evidence requirements
2.1
Potable hot and cold water system components are inspected at the intervals
specified in the maintenance schedule.
2.2
Potable hot and cold water system components are maintained to the
specifications and standards laid down in the maintenance schedule.
2.3
Control functions and system operation are tested and adjusted to perform
within the tolerances and ranges specified in the maintenance schedule.
2.4
Required follow-up action is arranged in accordance with the maintenance
schedule.
Outcome 3
Complete and monitor potable hot and cold water system maintenance documentation.
Evidence requirements
3.1
Maintenance reports are completed and actioned in accordance with system
documents.
3.2
Maintenance schedule and report formats are periodically reviewed, revised and
verified as accommodating changes in system or equipment characteristics or
changes in legislative requirements.
Competenz
SSB Code 101571
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
Replacement information
3221 version 6
Page 3 of 3
This unit standard, unit standard 3217, unit standard
3218, unit standard 3219, unit standard 3220, unit
standard 3222, and unit standard 3223 have been
replaced by unit standard 26338.
This unit standard is expiring. Assessment against the standard must take place
before the expiry date set out below.
Status and review information
Expiring date
16 July 2010
Date version published
16 July 2010
Expiry date
31 December 2016
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