we have a new addition added to an existing facility. The consultant has decided to pursuit NC for this project, therefore the question comes if there is an existing area within the LEED boundary with existing AC units that wont be modified, do these units need to comply with the minimum OA required as well? Would a Test and Balance be necessary or only plans?
In the case that they take these existing areas out of the LEED boundary, only the new equipment will need to be Tested and Balanced, correct?
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Scott Bowman
LEED FellowIntegrated Design + Energy Advisors, LLC
LEEDuser Expert
519 thumbs up
January 1, 2016 - 2:18 pm
As usual, your question has many dimensions, and layers...so not an easy answer. First, the LEED boundary has to be decided, and with additions, that is not always an easy answer. You need to review this portion of the standard carefully to make sure you meet the criteria.
You will discover if you have to certify the whole building, or just the addition. The core answer to your question rests on this determination. If the existing building is NOT part of the LEED project, then you will not need to do any work on those systems. If the existing units are going to be feeding the new addition, then all sorts of things are required, including proper ventilation and commissioning.
Commissioning is much, much more than Testing and Balancing, so your last sentence concerns me some, as all energy related equipment within a LEED project must be commissioned.