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SOUTH AFRICAN QUALIFICATIONS AUTHORITY 
REGISTERED UNIT STANDARD THAT HAS PASSED THE END DATE: 

Identify water reticulation systems, its components, accessories and controls used in air-conditioning and refrigeration installations 
SAQA US ID UNIT STANDARD TITLE
116718  Identify water reticulation systems, its components, accessories and controls used in air-conditioning and refrigeration installations 
ORIGINATOR
SGB Air-conditioning Refrigeration and Ventilation 
PRIMARY OR DELEGATED QUALITY ASSURANCE FUNCTIONARY
-  
FIELD SUBFIELD
Field 06 - Manufacturing, Engineering and Technology Manufacturing and Assembly 
ABET BAND UNIT STANDARD TYPE PRE-2009 NQF LEVEL NQF LEVEL CREDITS
Undefined  Regular  Level 3  NQF Level 03  4 
REGISTRATION STATUS REGISTRATION START DATE REGISTRATION END DATE SAQA DECISION NUMBER
Passed the End Date -
Status was "Reregistered" 		 2018-07-01  2023-06-30  SAQA 06120/18 
LAST DATE FOR ENROLMENT LAST DATE FOR ACHIEVEMENT
2024-06-30   2027-06-30  

In all of the tables in this document, both the pre-2009 NQF Level and the NQF Level is shown. In the text (purpose statements, qualification rules, etc), any references to NQF Levels are to the pre-2009 levels unless specifically stated otherwise.  

This unit standard replaces: 
US ID Unit Standard Title Pre-2009 NQF Level NQF Level Credits Replacement Status
9536  Identify water piping systems, its components, accessories and controls used refrigeration and air conditioning installations  Level 3  NQF Level 03  4   

PURPOSE OF THE UNIT STANDARD 
Identify and state the purpose of various water piping systems, their components and accessories used in air-conditioning and refrigeration applications. People credited with this unit standard are also able to describe the types, operation and construction of water regulating valves used in water piping systems. 

LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING 
It is recommended that people undertaking training for the competencies in this unit standard are already credited with standards relating the fundamentals of air-conditioning and refrigeration systems and related components or demonstrate equivalent skills and knowledge. 

UNIT STANDARD RANGE 
Materials:
  • PVC, steel or copper
    Systems:
  • Chilled water, condenser water, make-up water and drainage systems
  • Direct and reverse return systems.
    Components:
  • Pumps, expansion tanks.
    Accessories:
  • Manually operated valves and valves operated by electricity, pressure or temperature.
  • Isolating, regulating and non-return valves, two and three-way mixing and diverting valves.
  • Angle valves, gate valves, globe valves, ball valves, plug cocks, check valves, expansion valves, and relief valves. P-traps, hangers and supports, provision for expansion
  • Filters, strainers, air vents, thermometers and gauges, vibration eliminators. 
    		•

    Specific Outcomes and Assessment Criteria: 

    SPECIFIC OUTCOME 1 
    Identify and state the purpose of various water reticulation systems. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    The various types of water reticulation systems are identified and their purpose and application explained. 
    ASSESSMENT CRITERION RANGE 
    Once-through, open, closed, reverse return, direct return. Two-pipe, three-pipe, four-pipe systems.
     

    ASSESSMENT CRITERION 2 
    The main features, advantages and limitations of the various systems are listed and explained. 

    ASSESSMENT CRITERION 3 
    The factors influencing the sizing of water piping are explained. 

    ASSESSMENT CRITERION 4 
    The materials commonly used in water piping for air-conditioning and refrigeration applications are listed and their advantages and limitations discussed. 

    ASSESSMENT CRITERION 5 
    The effect of inferior water quality or the presence of solids on water piping systems is discussed. 

    SPECIFIC OUTCOME 2 
    Identify and state the purpose of the various components and accessories used in water piping systems. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    The various components and accessories used in water piping systems are listed and their operating principles discussed. 

    ASSESSMENT CRITERION 2 
    The purpose of the various components in a water piping system is explained. 

    ASSESSMENT CRITERION 3 
    The various components and accessories are located on the system. 

    ASSESSMENT CRITERION 4 
    The basic construction of the various components and accessories is described. 

    SPECIFIC OUTCOME 3 
    Identify and state purpose of control of water flow in water piping systems. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    The criteria for selecting the correct control valve for particular applications are given. 

    ASSESSMENT CRITERION 2 
    The function of the various types of control valves is explained. 

    ASSESSMENT CRITERION 3 
    The operation of control devices used in water piping systems is explained and the equipment is identified on water piping systems. 

    ASSESSMENT CRITERION 4 
    The basic design and construction of the various control components used in water piping systems as well as the material used, is described. 

    ASSESSMENT CRITERION 5 
    The importance of correctly sizing the valves is explained. 

    ASSESSMENT CRITERION 6 
    Advantages and limitations of the various types of valves are stated. 

    SPECIFIC OUTCOME 4 
    Sketch and describe the layout and installation of the various water piping systems. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    The layout of typical water reticulation systems to multiple coils, condensers, chillers and cooling towers are sketched and explained. 

    ASSESSMENT CRITERION 2 
    The operating principles of the various types of water reticulation systems are explained. 

    ASSESSMENT CRITERION 3 
    Methods used in supporting and anchoring water piping are discussed. 

    ASSESSMENT CRITERION 4 
    Vibration in water reticulation systems, its possible causes and solutions to control it are discussed. 

    ASSESSMENT CRITERION 5 
    The expansion tank and drain line piping layout is sketched and described and the purpose and operation is explained. 

    ASSESSMENT CRITERION 6 
    The importance of proper drainage piping and its routing is discussed. 

    ASSESSMENT CRITERION 7 
    Basic installation procedures of water piping are discussed. 


    UNIT STANDARD ACCREDITATION AND MODERATION OPTIONS 
  • Any person wishing to be assessed against this unit standard may apply to an assessment agency, assessor or provider institution accredited by the relevant ETQA, who may appoint a moderator to be present at the assessment.
  • The assessor must have knowledge and experience of air-conditioning or refrigeration. 
    		•

    UNIT STANDARD ESSENTIAL EMBEDDED KNOWLEDGE 
  • Naming types and applications of different water reticulation systems, their fittings, components, accessories and control valves.
  • Layout of water reticulation systems.
  • The application of water for transferring heat in air-conditioning and refrigeration systems.
  • Purpose of piping, fittings, accessories and controls in water piping systems
  • Manufacturer's and/or works instructions or company guidelines regarding basic installation procedures. 
    		•

    UNIT STANDARD DEVELOPMENTAL OUTCOME 
    N/A 

    UNIT STANDARD LINKAGES 
    N/A 


    Critical Cross-field Outcomes (CCFO): 

    UNIT STANDARD CCFO IDENTIFYING 
    Identify and solve problems
  • Identify water-piping systems and components, materials and water flow controls
  • Selecting correct system for particular application 
    		•

    UNIT STANDARD CCFO SCIENCE 
    Use science and technology effectively and critically
  • Identification of water reticulation systems, components, accessories and controls 
    		•

    UNIT STANDARD CCFO DEMONSTRATING 
    Demonstrate an understanding of the world as a set of related systems
  • Be aware of the effect of incorrect selection and installation of piping system 
    		•

    UNIT STANDARD CCFO CONTRIBUTING 
    Learner and societal development
  • By learning how a water piping system used in refrigeration and air-conditioning installations operates 
    		•

    UNIT STANDARD ASSESSOR CRITERIA 
    N/A 

    REREGISTRATION HISTORY 
    As per the SAQA Board decision/s at that time, this unit standard was Reregistered in 2012; 2015. 

    UNIT STANDARD NOTES 
    This unit standard replaces unit standard, 9536, "Identify water piping systems, its components, accessories and controls used in air-conditioning and refrigeration installations", Level 3, 4 credits.

    Specific requirements are contained in one or more of the following documents:
  • Manufacturer's instructions and technical information regarding the installation of water piping and control systems and components.
  • Company procedures and guidelines regarding the installation of water piping systems. 
    		•

    QUALIFICATIONS UTILISING THIS UNIT STANDARD: 
      ID QUALIFICATION TITLE PRE-2009 NQF LEVEL NQF LEVEL STATUS END DATE PRIMARY OR DELEGATED QA FUNCTIONARY
    Elective  48963   National Certificate: Air-Conditioning, Refrigeration and Ventilation  Level 3  NQF Level 03  Passed the End Date -
    Status was "Reregistered"     		 2009-03-12  Was MERSETA until Last Date for Achievement 
    Elective  65489   National Certificate: Air-Conditioning, Refrigeration and Ventilation  Level 3  NQF Level 03  Passed the End Date -
    Status was "Reregistered"     		 2023-06-30  MERSETA 


    PROVIDERS CURRENTLY ACCREDITED TO OFFER THIS UNIT STANDARD: 
    This information shows the current accreditations (i.e. those not past their accreditation end dates), and is the most complete record available to SAQA as of today. Some Primary or Delegated Quality Assurance Functionaries have a lag in their recording systems for provider accreditation, in turn leading to a lag in notifying SAQA of all the providers that they have accredited to offer qualifications and unit standards, as well as any extensions to accreditation end dates. The relevant Primary or Delegated Quality Assurance Functionary should be notified if a record appears to be missing from here.
     
    NONE 


    All qualifications and part qualifications registered on the National Qualifications Framework are public property. Thus the only payment that can be made for them is for service and reproduction. It is illegal to sell this material for profit. If the material is reproduced or quoted, the South African Qualifications Authority (SAQA) should be acknowledged as the source.