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IEQ-3 CARBON DIOXIDE MONITORING

Erratum

Mechanically ventilated spaces

Erratum Number
IEQ03-E-OB1-1558

Guidance
2016-09-09

On page 53 of the Green Star SA - Office v1 Technical Manual, under ‘Credit Criteria’: replace Mechanically ventilated spaces first bullet point with the following:

• For 95% of the UA a carbon dioxide (CO2) monitoring and control system with a minimum of one CO2 sensor at all return points on each floor, is provided to facilitate continuous monitoring and adjustment of outside air ventilation rates to each level, to ensure independent control of ventilation rates to achieve outside air requirements;

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Technical Clarification

100% outside air provision

Technical Clarification Number
IEQ03-T-OB1-483

Guidance
2012-04-25

For the purposes of the IEQ-03 credit, where HVAC systems provide 100% outside air with no recirculated component, it must be clearly shown that these AHU’s do not have an economy cycle configuration. The following additional guidance is also provided:

• If the AHU’s have return air ducting for heat recovery purposes only, the Short Report must clearly confirm that the configuration does not allow for any mixing of supply and return air. Any specifications and drawings submitted must be in accordance with this confirmation (i.e. must not show any allowance for mixing of supply and return air).

• AHU’s may be controlled via variable volume fans, however it must be shown that the control system does not allow the ventilation rate to reduce below the statutory ventilation rate requirements, or where the IEQ-1 credit is targeted, below the ventilation rate claimed in the IEQ-1 credit. This requirement must be clearly stated in the Short Report and shown in the tender documentation (specifications or drawings)

 

Technical Clarification

Application of SANS 10400-O

Technical Clarification Number
IEQ03-T-OB1-442

Guidance
2012-04-02

Wherever ‘SANS 10400-O’ is referred to within the IEQ-3 credit, this relates to SANS 10400-O:1990 for the purposes of Green Star SA – Office v1 rating tool. It is the project team’s responsibility to ensure however that the latest relevant building regulations are complied with for statutory purposes.”

 

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Erratum

Application of SANS 10400-O

Erratum Number
IEQ03-E-OB1-442

Guidance
2012-04-02

On page 56 of the Green Star SA - Office v1 Technical Manual, under ‘Additional Guidance’:

- For the first bullet point, delete “50% increase” and replace it with “7.5 l/s per person”
- For the second bullet point, delete “100% increase” and replace it with “10 l/s per person”
- For the third bullet point, delete “150% increase” and replace it with “12.5 l/s per person”

 

Erratum

Green Star SA - Office v1 Technical Manual: Page 55

Erratum Number
IEQ3-E-OB1-0151

Guidance
2011-01-06

Documentation Requirements, description of documentation, under 'short report', replace the three bullet points with the following two: " - For naturally ventilated spaces, referencing the schedule of openings, and confirming that the minimum requirements of SANS 10400-O will be exceeded for at least 95% of the UA; and - For mechanically ventilated spaces, describing the configuration of each ventilation system and its method of operation, and providing a schedule confirming the minimum outside air rate supplied by each AHU together with the UA of each zone served by each AHU."

 

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Erratum

Green Star SA - Office v1 Technical Manual: Page 54

Erratum Number
IEQ3-E-OB1-0157

Guidance
2011-01-06

Documentation Requirements, 'Mechanically ventilated spaces', system option #1, first bullet point, add the words "is acceptable" before the final "and" so the bullet point reads "Be located at all return air points on each floor (usually ducts); location purely within risers does not support the Aim of Credit. Location within return ducts only or within return ducts and return risers is acceptable; and"

 

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Technical Clarification

Schematic mechanical drawings

Technical Clarification Number
IEQ3-T-OB1-0117

Guidance
2010-11-16

In the absence of 'schematic mechanical drawings', mechanical plan drawings are deemed an acceptable substitute provided that all of the information required to be communicated within the 'schematic mechanical drawing' is contained, and clearly identified, within the mechanical plan drawing. The intent of 'schematic mechanical drawings' is to clearly communicate essential information pertaining to mechanical air or water distribution systems. Project teams are to ensure that ALL the equivalent essential information expected on a schematic mechanical drawing is clearly identified on the mechanical plan drawing.

 

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