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• • <br /> System Design <br /> 3-6 VENTILATION <br /> 3-6.1 Plenums <br /> Table 3-29.Plenum Protection <br /> Items Parameters ADP Nozzle <br /> No Filter 1 10 ft.x 4 ft.(3 m x 1.2 m)Max. 1-located at one end of the plenum <br /> "V'Filter 10 ft.x 4 ft.(3 m x 1.2 m) 1-located at one end of the plenum <br /> 20 ft.x 4 ft.(6 m x 1.2 m) 2-located at end of plenum pointing inwards <br /> Single Bank Filter 10 ft.x 4 ft.(3 m x 1.2 m) 1-located at one end of the plenum <br /> 20 ft.x 4 ft.(6 m x 1.2 m) 2-located at end of plenum pointing inwards <br /> 1 When no filters are present,the nozzle protecting the plenum is used to discharge the wet chemical on the under- <br /> side of the hood.In this case,the hood may not exceed a length of 10 ft.(3 m)or a width of <br /> 4 ft(1.2 m). <br /> Longer plenums may be similarly protected with a single ADP nozzle being used for each 10 ft. (3.0 <br /> m)of plenum length and each 4 ft. (1.2 m)of plenum width. <br /> ADP nozzles may be used in combinations(see Figure 3-28).Multiples may be installed facing in the <br /> same direction,and/or at the ends of the plenum pointing in.Each nozzle shall provide a maximum <br /> of 10 ft.(3 m)of coverage. <br /> ADP nozzles must be centrally located in the plenum with their discharge directed along the length of <br /> the plenum and located in relation to the filters as shown in Figure 3-28.Refer to Figure 3-28 for filter <br /> height. <br /> P/N 9127100 3-33 January 2007 <br /> '.1 Z9 <br />