Are you required to Cx the systems only within the project scope and LEED boundary? This was our thinking so we didn't Cx the existing boiler system or existing DHW system in the main building because it was not included in the scope of our project or LEED boundary. We Cx all new equipment that was installed in the addition, which was within the LEED boundary. However, we received a review comment only about the DHW system. Saying that we need to Cx the DHW system. Would this be required even though it is not within the LEED boundary? Thanks!
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Scott Bowman
LEED FellowIntegrated Design + Energy Advisors, LLC
LEEDuser Expert
519 thumbs up
July 31, 2013 - 10:58 am
I would agree with your interpretation. In some instances when you are using a DES, there would be some requirements outside of the boundary, but if you are dealing with those systems at the boundary line (not claiming any efficiencies at the generation) that would not apply.
My recommendation would be to contact the reviewers and making it clear the system is out of the scope. Post the results of that conversation, it should be enlightening.
Jorge Torres-Coto
Building Systems Commissioning EngineerEmpirical Engineering, LLC
17 thumbs up
November 4, 2013 - 12:06 am
We feel obligated to commission systems (or parts of systems) that are out of the project boundary. If they serve anything in the project boundary we have to make sure it: meets all the mandatory requirements (NC projects) and/or prescriptive requirements (CI projects). We also need to make sure they comply with prerrequisites and/or other related credits attempted.
An example would be a C&S AHU that does not have a damper that closes when the unit turns off, does not have enough OSA, does not have a scheduled control, etc., etc.
We do most of our work out of the USA, so these are issues commonly overlooked by both designers and installers.