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P/N 15040 System Design Page 3A-34 <br /> 3A.4.2 Plenum,Coverage, VPSB <br /> 3A.4.2.1 Standard Plenum Coverage,VPSB <br /> Plenum Type Nozzle Dimensions Maximum Nozzle Location Nozzle Nozzle <br /> Used Per Nozzle Specifications Offset* Orientation <br /> LxWxH <br /> Backdraft(Option 1) TF 4'x 15'x 10' Volume=600ft3 12"x 12"Square, 0"to 6" Vertical, Pointing <br /> Area=60ft2 Centered at Downward <br /> Side 15' Ceiling <br /> Backdraft(Option 2) TF 4'x 9'x 18' Volume=648ft3 12"x 12" 0"to 6" Vertical,Pointing <br /> Area=36ft2 Square, Downward <br /> Side=9' Centered at <br /> Ceiling <br /> Pantleg TF 4'x 15'x 12' Volume=720ft3 12"x 12"Square, 0"to 6" Vertical,Pointing <br /> (Pantleg width Area=60ft2 Centered at Downward <br /> dimensions: Side 15' Ceiling <br /> 1'minimum to <br /> 3' maximum) <br /> Pit(Option 1) 3-Way 24'x 4'x 4' Volume=384ft' Centered,Length, 0"to 6" Vertical, Pointing <br /> Area=96ft2 Width,and Downward;Two <br /> Side=24' Height of Plenum Opposite Side <br /> Holes Parallel to <br /> Longest Side <br /> Pit(Option 2) D/P, 24'x4'x4' Volume=384ft3 End, 0"to 6" Horizontal <br /> Area=96ft2 Centered <br /> Side=24' <br /> Pit with Tunnel 3-Way Pit:24'x 4'x 4' Volume=576W Centered, Y2 Pit Vertical,Pointing <br /> (Option 1) (Nozzle No Area=144ft2 <br /> Vertically; Height Downward;Each <br /> Further than 12' Side=24' Centered,Length Side Hole Aligned <br /> From Either Pit of Pit;12"From Parallel with Pit <br /> End.) Start of Tunnel and funnel <br /> Tunnel: Sections <br /> 12'x 4'x 4' <br /> Downdraft,Side 3-Way Plenum: Volume=640ft3 Centered,Length Horizontal,Each <br /> Exhaust With Vertical 24'x 4'x'4' Area=96ft2 of Plenum; Side Hole Aligned <br /> Transition (Nozzle no Side=24' Centered, Parallel with <br /> Further Than 12' Width of Plenum; Plenum and <br /> From Either End Centered,Height Transition Sections <br /> of Plenum.) of Plenum <br /> Transition: <br /> 4'x 4'x 16'tall <br /> Under Floor TF 14'x 15'x 1' Volume=210ft3 Side-Entry; 0"to 6" Horizontal <br /> Area=2 10ft2 Centered, <br /> Side 15' Vertically; <br /> <> Centered, <br /> I Lengthwise(±6") L <br /> *Nozzle Offset is the maximum distance from the tip of the nozzle to the nearest edge of the protected zone. <br /> UL EX 5208 April 9,2013 <br />