If there is no electric lighting in the model, the Electric Lighting Page is displayed in Daylight Zone mode. In this mode, editable zone numbers are displayed in the workplane plot on the right instead of nighttime illuminance values. The table in this mode simply indicates the 4 zone options and the color coding assigned to each.

Light Loss Factor – This field is not applicable when no electric lighting is included in the model.

Design Illuminance – This field defines the design illuminance for the space. The value entered for the design illuminance on this screen will be used as the intended target illuminance throughout the rest of the program.

Zoning Chart – This plot represents each grid point on the workplane and indicates the ‘daylight zone’ for each point. A ‘daylight zone’ can have different purposes. It may represent grid points that are under the influence of the same zone of luminaires or it may just represent a unique area of the model where you want to be able to view and report the daylighting performance separately on the following pages. Zone numbers 1-4 can be given sequentially to any grid point on the workplane by typing them, or copying them, into the corresponding cells. A 0 (or non 1-4 input can be given) to gray out a cell which will then be ignored in the daylighting performance views and reports. In the example in the figure above, you can see the upper corner of the model was greyed out as perhaps this was a storage area which the designer did not want to include in the daylighting analysis. Any points that fall within a block will automatically be greyed out.


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