Forum discussion
CI-2009 IEQp1: Minimum IAQ Performance
If the project spaces are served by a large VAV system which has mixing of central Outside air inlet and recirculation air, but the VAV system is also serving other tenant spaces. How can we do the calculation if we cannot get space use info in other tenant spaces which are served by same VAV system?
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Is outdoor air quality testing required in a space using natural ventilation?
What options are available to projects outside the US to meet this prerequisite?
Can LEED 2009 projects elect to follow ASHRAE 62.1-2010 for this prerequisite?
Which units should be included in the calculations for this prerequisite?
Dylan Connelly
Mechanical EngineerIntegral Group
LEEDuser Expert
472 thumbs up
January 21, 2013 - 3:13 pm
This is a bit tricky, we tend to try to find the data for the other tenant spaces just to be sure. Sometimes you can get this information from the building engineer or manager.
If not, the CI version of this form allows you to only input the critical zones. "Describe how critical zones are selected and how all occupied zones are accounted for in the determination of the critical zone. A critical zone is defined as the zone which requires the largest fraction of outdoor air in the primary air stream."
If we don't have the data from all the zones, we will typically input all of the zones within the project scope then explain that the other zones are similar in the narrative (also private offices and conference rooms, etc).