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NC-2009 EAc3:Enhanced Commissioning

Not all systems are implemented by the time of occupancy

Dear all, Can you please advise me on a situation where the design states part of the building to be conditioned and the other part is ventilated but by the time occupancy happens the owner has decided to postpone implementation of the air conditioning system (due to financial constraints) but has completed the ventilation system. Is it possible to commission only the systems that are established at the time of occupancy and do the final submission for LEED or do we have to wait until all the systems are implemented to do the final submission?

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Scott Bowman
LEED Fellow
Integrated Design + Energy Advisors, LLC
LEEDuser Expert
377 thumbs up

Tue, 03/25/2014 - 20:03

I think you have more issues than just commissioning. Hopefully someone else will chime in, but I think that if the AC is not going to be implemented as part of this project, ie for several years or ever, then you have a different project and documentation, specifically the energy modeling, adjusted to meet what was designed. That could have a large effect on the energy savings depending on the situation. If the AC is delayed by a few months, then it is just like seasonal testing, and the systems could be commissioned at the time they are installed, however an AC system is so significant to a project, I am not sure that GBCI would view this as “incidental” to the project, so you might have to wait to submit until the AC is installed and operational. There are always some open items in the action log, and sometimes some testing that must wait for appropriate temperatures (seasonal), but the AC could stretch that to far.

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