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Ll <br />0 <br />Plenum Protection <br />Nozzle: Wi HP (i Flow Point) <br />Ooverage; Length, 12 feat(17 m) max. <br />Width: 4 feet (1,2 m) max. <br />Placement See Figure 3-7. <br />Alm point: See Figure 3.7, <br />The Model N-1 HP nozzle is a one (1) flow point nozzle <br />that can protect a plenum (either single bank or V-bank) <br />of 12 feet (3.7 rn) In length and 4 feet (1.2 in) in width <br />per nozzle. Larger plenums must be divided into 12 foot <br />(31 m) sections,, with each section, protected with a <br />separate nozzle. See Figure 3J, <br />Plenum. V-bank-Nozzle Placement <br />The nozzle must be, located at the center of the V-bank <br />width and down 113 of the vertical height, within 6 inchas <br />(16 cm) of the end of the plenum or plenum module and <br />aimed down the length of the plenum. See Figure 3-7. <br />Plenum: Single Fitter Bank N*zzle,,P1g-qem-e-r4t <br />The nozzle must be located at a point that is 2"(5:1 cm). <br />from the back edge of. the filter and 113 of the vertical <br />height of the filter, within 6 inches (15 cm) off the end of <br />the plenum or plenum module and aimed down the <br />length of the plenum, See Figure 3-7. <br />/7,-L <br />wl-r' <br />Fd <br />V SAW <br />+ MAN, <br />Flgure,3-7. SWGL� aAAK <br />Model N-1 HP <br />Plenum Nozzle Placement and Aiming <br />Note: These examples are tYPlcal and do not represent <br />every acceptable nozzjs configuration, only a <br />representative sample of'them,. <br />Qagjgn2r _Note <br />For plenums that.exceed 12 feet (3.7 m) in length <br />and therefore require multiple nozzles, it 15 <br />rezommanded that the totaf length be divided into <br />equally sized protection zones and protected <br />accordingly. So a 16 foot (4.9 M) long Plenum <br />should be divided into to 9 foot (2.4 m) zones, with <br />a nozzle protecting as. opposed to a 12 imi <br />(3.7 in) zone and a 4 foot (1.2 in) zone_ <br />SFN: BFR-TM <br />chapter 3 — System Desigin <br />Page 3 - 3 <br />Revision 4 <br />APPLLANr 4E PROTECTIQN <br />each <diffarent appliance must be prolacted in a specific <br />manner with regard to nozzle selection, placement, and <br />aiming- No deviations from these parameters are <br />allowed and felure. to comply completely with these <br />requirements, will void the UL Listing of the system and <br />may render 1a^ system lneffscuve� <br />In order to piopedy understand, this section, several key <br />terms need to be defined in advance, <br />DESIGN TERMINOLOGY <br />Nozzle Height- The distance from the tip of the <br />discharge nozzle to the topstalace of the appliance <br />(except for woks, I in which case the bottom of the wok is <br />used). <br />Hazard Area: All nozzle coverages include the <br />maximum. size of the hazard area they can protect. <br />Hazard area Is NOT the overall size of the appliance: <br />being protected, but rather the actual size of the <br />portion of the appliance used for cooking, <br />Aoiglianges; I2quiring Multi to Mmzzies <br />Some appliances may need to be protected by multiple <br />nozzles because of their size. If the size of an <br />appliance is larger than the approved coverage for that <br />appliance, multiple nozzles must be. usecl: This is <br />accomplished by dividing, the hazard area into Individual <br />zones that comply with the parameters of the, listing for <br />that appliance. In this case, each zone will be protected, <br />as an Individual appliance' with respect to nozzle <br />placement and aiming- <br />MkImm"MMI <br />Two (2) Burngr Range — LOW ProxiMMI <br />Nozzle: NALP (1, Flow Point) <br />Coverage- 42'(30,5 cm) x 24" (61 cm) Maximum. <br />(measured burner edge to burner edge) <br />Nozzle Ht- 161 (41 cm) —3W (76 cm) <br />Placement: 3" (7;6 CM) from either edge of appliance, <br />on appfiance's long centerline, <br />Alm point- S' (15 cm) from opposite —edge of <br />appllanca, on applianews long center tne. <br />Tito Model N-1 LP nozzle is a one. (1) flow point nozzle <br />that can protect a range cooking area of 12' (30.5 cm) <br />wide by 29 (61 c) deep. The nozzle must be located <br />1W (41 cm) 'm 3V"J'75 cm) above, the coc)drig surface <br />and positioned on the appliance's long, cepteruna within <br />VLEX 6806 ULC—EX 6885 <br />Jailwary 1, 2011 <br />