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CI-2009 EAc1.2:Optimize Energy Performance—Lighting Controls

Daylight Controls for 50% of Lighting Load?

Dear all, I am working on a CI Library renovation and we have an existing cellar where the majority of the services exist (IE. Boilers, IT Servers). The cellar, which counts for 1/3 of our LEED Boundary, will generally be an area of storage (non regularly occupied space) where there is hardly any daylight. Do we have to count the cellar to pursue Point 2 - Daylight Controls for 50% Lighting Load even though there is no daylight or can we exclude this area? If we include the cellar we cannot achieve the 50% mark as there is no daylight within the existing area. However, it does not indicate whether Point 2 applies to areas that are day lit? I would appreciate any guidance on this matter! Thanks!

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Sat, 02/11/2012 - 18:05

Simon, Yes, you would need to include the cellar to pursue the point for daylighting controls for 50% of connected lighting load. I'm not aware of any exemptions to that requirement. So all spaces would need to be included. In this case, it seems the only daylighting point that might might apply to your project is for controls within 15 ft of the windows in regularly occupied spaces.

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