Laserfiche WebLink
Chapter 3 System Design <br /> — <br /> . . . 3 <br /> ' REV.4 <br /> \ <br /> Transition _ <br /> Dmc�� The protection uf non-standard ducts c. Multiple risers <br /> /nhou|dbe reviewed by the authority having jurisdiction.pYRO- !n cases of multiple rises,each riser ie protected amon <br /> UHENY KITCHEN KNIGHT U recommends that transition ducts � individual duct.See Figure 3-1d' <br /> bo protected aofollows: ' <br /> a. Tronoitionducts—kargertnamal|ur DUCT <br /> |n cases where the duct/plenum interface opening is <br /> larger than the final exhaust duct, measure the perime- <br /> ter/diameter of the duct halfway between the largest and DUCT <br /> smallest section(or the average pehmeter/diumeteh.The <br /> nozzle intobe located within 0'O in.(15.2 cm)ofthe <br /> ductfp|nnum interface(not mt the point where the 006175PC <br /> measurement was takon),centered under the final \PLENUM <br /> 0. exhaust duct opening.See Figure 34b' 0. FigureQ-1d. <br /> P. Note:Nozzles 0o protect ducts with a transition that is <br /> more than 4ft(1.2nm) in height,will bo required bobo Electrostatic Precipitator—Ducts utilizing electrostatic <br /> positioned in the opening of the transition from the hood precipitators must beP!ztected above and below the unit. <br /> � 2tu8 in.(5.1tn20.S cm) into the opening using standard Standard duct nozzles are used in this application.See Figure <br /> � duct nozzle design parameters. 0-3-1 a. 2 NOZZLE <br /> —PRECIPITATOR <br /> PERIMETERP NUM <br /> / _ _ _ _ <br /> 2D NOZZLE <br /> MEASUREMENT 112 WAY INTO <br /> spr <br /> TRANSITION <br /> =17,IP^ 0. Figure3-1e. <br /> P. Figure 3-1 b. Plenum Protection <br /> - The Model 1H nozzle, Part Nu551O29 isu one(1)flow <br /> b. Transition ducts—smaller tolarger nozzle used for plenum protection.Aning|e1Hnozzkauan <br /> |n cases where the duct/plenum interface opening ie protect n plenum (with single orV-bomk filters) 10ft(3.1 rn) <br /> smaller than the final exhaust duct,measure the podme' long by4ft(1.2m)wide.Dividing the length into sections <br /> ter/diameter of the hna|exhaust duct.The nuzz|a(s) iobz equal toor less than 1Oft(8.1m) in length and positioning a <br /> be located within O-O in.(iG.2 cm)of the duct/plenum nozzle ed the start of each section can ba done boprotect <br /> ^ interface,centered in the opening.See Figure 3~1c' longer plenums. <br /> / <br /> PERIMETER <br /> MEASUREMENT / <br /> / <br /> / <br /> / <br /> / <br /> / <br /> / <br /> / <br /> ' <br /> 006174PC <br /> ^ Figure 3-1 c. <br /> bLGX 3830 <br /> December 1,20O9 <br /> _ <br />