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FAQs about EAc3.1 :

My project has a BAS for the main building HVAC and lighting, but then a separate BAS for an attached arena’s HVAC and lighting. Would this meet the credit requirements?

The lighting in our project isn’t tied to the BAS. Is there an alternative way to meet the credit requirements?

Can sensor calibration be performed in-house? Would a contracto or vendor be capable of performing this service?

Our project building has lighting in the stairwells that is kept on 24/7 for safety and code considerations. All other lighting in the building is on occupancy sensors. Will this situation prohibit the project from being able to pursue this credit?

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EBOM-2009 EAc3.1:Performance Measurement—Building Automation System

Tenants

Our project is an office tower with 30 tenants. Does the BAS need to control tenant's systems? HVAC is centralized (cooling tower and chillers), but each tenant controls fan& coils within the rented space. I think this credit will be difficult in projects with large number of tenants, since they will be reluctant to let their systems be controlled by the building operator. Does anyone have experience achieving this credit in a building with many tenants?

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Profile picture for user Dave.Hubka_2
Dave Hubka
Practice Leader - Sustainability
EUA
LEEDuser Expert
510 thumbs up

Tue, 04/26/2016 - 11:48

The BAS does not need to control tenant HVAC systems. It does however need to control base building heating systems, cooling systems, ventilation systems, and both interior and exterior lighting systems. Lighting systems can be controlled via timers or occupancy sensors. (ASHRAE 90.1-2007 Section 9.4.1.1 allows some lighting control exclusions) We've been successful achieving this credit on multi-tenant buildings.

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