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

Engineer a building management system for air-conditioning, refrigeration or ventilation installations 
SAQA US ID UNIT STANDARD TITLE
9458  Engineer a building management system for air-conditioning, refrigeration or ventilation installations 
ORIGINATOR
SGB Air-conditioning Refrigeration and Ventilation 
PRIMARY OR DELEGATED QUALITY ASSURANCE FUNCTIONARY
-  
FIELD SUBFIELD
Field 06 - Manufacturing, Engineering and Technology Engineering and Related Design 
ABET BAND UNIT STANDARD TYPE PRE-2009 NQF LEVEL NQF LEVEL CREDITS
Undefined  Regular  Level 5  Level TBA: Pre-2009 was L5  10 
REGISTRATION STATUS REGISTRATION START DATE REGISTRATION END DATE SAQA DECISION NUMBER
Passed the End Date -
Status was "Registered" 		 2001-06-13  2004-06-13  SAQA 0836/01 
LAST DATE FOR ENROLMENT LAST DATE FOR ACHIEVEMENT
2005-06-13   2008-06-13  

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 does not replace any other unit standard and is not replaced by any other unit standard. 

PURPOSE OF THE UNIT STANDARD 
Develop and engineer a building management system (BMS) for air-conditioning, refrigeration or ventilation installations with the aid of the plant details and the method of control of all the operating parameters. 

LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING 
  • Operate a computer.
  • Monitor an air-conditioning, refrigeration, or ventilation system through the building management system.
  • Suitable and sufficient knowledge and experience in the discipline involved. 
    		•

    UNIT STANDARD RANGE 
  • Learners are to be assessed on a BMS system with which they are familiar.
  • Learners may be assessed on an air-conditioning, refrigeration or ventilation system.
  • All relevant information for the refrigeration, air-conditioning or ventilation system shall be available. 
    		•

    Specific Outcomes and Assessment Criteria: 

    SPECIFIC OUTCOME 1 
    Create the data base. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    1. A point naming structure that adequately identifies the plant components is created. 

    ASSESSMENT CRITERION 2 
    2. A hand sketch of the BMS network is created. 

    ASSESSMENT CRITERION 3 
    3. Each control and monitoring point is allocated by name to the appropriate controller on the network. 

    ASSESSMENT CRITERION 4 
    4. Reasons for selecting the naming convention are explained. 

    ASSESSMENT CRITERION 5 
    5. Consequences of incorrectly naming the point database are explained. 

    SPECIFIC OUTCOME 2 
    Demonstrate understanding of operation & function of air-con, refrigeration or ventilation plants. 
    OUTCOME NOTES 
    Demonstrate understanding of the operation and function of an air-conditioning, refrigeration or ventilation plant. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    1. Understanding of the operation and function of the individual components of the plant is demonstrated. 

    ASSESSMENT CRITERION 2 
    2. Understanding the interaction of the various plant components is demonstrated. 

    ASSESSMENT CRITERION 3 
    3. The design brief is correctly interpreted and discussed. 
    ASSESSMENT CRITERION RANGE 
    The control sequence diagrams, the mechanical and electrical drawings and the design brief from the consultant or the client.
     

    SPECIFIC OUTCOME 3 
    Select the hardware for the building management system. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    1. All control and monitoring points to be connected to the building management system are correctly identified. 

    ASSESSMENT CRITERION 2 
    2. All points are identified as to the various types. 
    ASSESSMENT CRITERION RANGE 
    Analogue "IN" and "OUT" and digital "IN" and "OUT".
     

    ASSESSMENT CRITERION 3 
    3. All points are logically grouped for appropriate locations. 

    ASSESSMENT CRITERION 4 
    4. The appropriate hardware is selected. 
    ASSESSMENT CRITERION RANGE 
    Sensors, controllers and control elements.
     

    ASSESSMENT CRITERION 5 
    5. Various options are discussed with the consultant or the client. 
    ASSESSMENT CRITERION RANGE 
    Suitability of system, expansion of control or monitoring points.
     

    SPECIFIC OUTCOME 4 
    Draw a wiring diagram for all points wired to the BMS. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    1. A sketch showing all points wired to the BMS is drawn. 

    ASSESSMENT CRITERION 2 
    2. The wiring diagram is checked against the point database. 

    ASSESSMENT CRITERION 3 
    3. All deviations are determined and corrected and the wiring diagram is amended accordingly. 

    ASSESSMENT CRITERION 4 
    4. A final layout is made and discussed with and approved by the consultant or client. 

    SPECIFIC OUTCOME 5 
    Write the software, which complies with the specified brief. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    1. Understanding of the control schedule is demonstrated. 

    ASSESSMENT CRITERION 2 
    2. Ability to write the software to comply with the schedule is demonstrated. 

    ASSESSMENT CRITERION 3 
    3. The software is tested for correct operation. 

    ASSESSMENT CRITERION 4 
    4. The correct graphics are produced. 

    SPECIFIC OUTCOME 6 
    Write the software, which complies with the specified brief. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    1. All points connected to the BMS are checked. 

    ASSESSMENT CRITERION 2 
    2. The system is checked on the computer for correct operation. 

    ASSESSMENT CRITERION 3 
    3. The BMS operator is instructed on the use of the system. 

    ASSESSMENT CRITERION 4 
    4. Ability by the operator to operate the system is tested. 


    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 
    The system of interrogating an air-conditioning, refrigeration or ventilation system by means of a software program installed on a computer combined with electrical wiring interconnecting a variety of sensors, controllers and controlled elements installed on the plant.

    Work instructions and procedures. 


    Critical Cross-field Outcomes (CCFO): 

    UNIT STANDARD CCFO IDENTIFYING 
    Identify and solve problems
  • Nature and extent of deviation from specified performance is diagnosed
  • Select the correct hardware for the applications 
    		•

    UNIT STANDARD CCFO ORGANISING 
    Organize and manage myself and my activities
  • Interpretation of drawings and sketches 
    		•

    UNIT STANDARD CCFO COLLECTING 
    Collect, analyse, organize and critically evaluate information
  • Reading and interpreting operating and maintenance instructions 
    		•

    UNIT STANDARD CCFO COMMUNICATING 
    Communicate effectively
  • Consultation with consultants and/or clients 
    		•

    UNIT STANDARD CCFO SCIENCE 
    Use science and technology effectively and critically
  • Appropriate use of the computer program 
    		•

    QUALIFICATIONS UTILISING THIS UNIT STANDARD: 
      ID QUALIFICATION TITLE PRE-2009 NQF LEVEL NQF LEVEL STATUS END DATE PRIMARY OR DELEGATED QA FUNCTIONARY
    Elective  20722   National Diploma: Air Conditioning, Refrigeration and Ventilation  Level 5  Level TBA: Pre-2009 was L5  Passed the End Date -
    Status was "Registered"     		 2004-06-13  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.