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

Controls or lights within 15' of windows?? or both?

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John Kitsalis
Principal
New England Engineering, Inc.
LEEDuser Basic Member
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Do we need the daylight controls itself to be within 15' of a window/skylight OR Do we need to provide daylight controls FOR WINDOWS within 15' of a window/skylight. OR Do we need to provide daylight controls FOR WINDOWS within 15' of a window/skylight AND have the controls itself be within 15' of the window.

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Mon, 10/26/2015 - 18:52

Option 2 if I understand your explanation correctly. If there is sufficient daylight within 15 feet of a window, the lights must be able to dim, regardless of where you put the controls.
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Michael Smithing
Director - Green Building Advisory
Colliers International Ltd.
LEEDuser Basic Member
201 thumbs up

Tue, 10/27/2015 - 00:53

My understand was always that the controls needed to be within 15 feet of the windows - the form requires that you enter the distance from the windows to the control device in all "regularly occupied daylit areas." Regularly occupied areas which are more than 15 feet from the windows do not require daylight controls.

Tue, 10/27/2015 - 12:45

Then I defer to you. That's probably where they need to be in order to measure daylight at 15' from the window.

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