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SECTION IV — SYSTEM DESIGN <br /> UL EX.3470 ULC CEx747 Page 4-5 <br /> 10-1-02 REV 3 <br /> Plenum Protection <br /> The R-102 system uses the 1 W Nozzle (Part No.419336)or the <br /> ►1100 Nozzle(Part No.430192)or the 1 N Nozzle(Part No.419335) t <br /> for plenum protection.The 1 W nozzle tip is stamped with 1 W and 20 IN.(51 cm) <br /> ►the 1 N nozzle tip is stamped with 1 N, indicating they are one-flow MAXIMUM <br /> nozzles and must be counted as one flow number each.When pro- <br /> tecting a plenum chamber, the entire chamber must be protected <br /> ►regardless of filter length. 1 IN.(2.5 cm) <br /> MINIMUM <br /> ►VERTICAL PROTECTION—GENERAL <br /> ►One 1 W nozzle or 1100 nozzle will protect 4 linear feet(1.2 m)of t <br /> 20 (51 <br /> plenum.The maximum distance from the end of the hood to the MAIXIMUMN. cm) <br /> first and last nozzle must be no more than 2 ft.(.6 m).After the first <br /> nozzle, any additional nozzles must be positioned at a maximum <br /> of 4 ft. (1.2 m) apart down the entire length of the plenum. The 1 <br /> ►plenum width must not exceed 4 ft.(1.2 m).(The 1 W or 1100 noz- i IN.(2.5 cm) <br /> zle can be used on single or V-bank filter arrangements.) See MINIMUM <br /> .Figure 6. <br /> 2 FT.(.6 m) <br /> MAXIMUM -� ' FIGURE 7 <br /> 4 FT.(1.2 m) 000199 <br /> MAXIMUM R <br /> ► 4 FT.(1.2 m) \4 FT.(1.2 m) ' Option 2:The 1 W or 1100 nozzle must be placed perpendicular, <br /> 2 FT.(.6 m) MAXIMUM MAXIMUM 8-12 in.(20-30 cm)from the face of the filter and angled <br /> MAXIMUM to the center of the filter.The nozzle tip must be within <br /> f� <br /> i� 2 in.(5 cm)from the perpendicular center line of the fil- <br /> ter.See Figure 8. <br /> 12 IN.(30 cm) <br /> MAXIMUM <br /> 41N. A( <br /> (10 cm) <br /> 8 IN.(20 cm) <br /> MINIMUM <br /> NOZZLE TIP <br /> ► MUST BE WITHIN <br /> FIGURE 6 THIS AREA <br /> 000197 <br /> ►When protecting plenums with the 1 W or 1100 nozzle,two options <br /> of coverage are available: <br /> ►Option 1:The 1100 or 1 W nozzle must be on the center line of the FIGURE0002800 <br /> single or "V" bank filter and positioned within 1-20 in. <br /> (2.5-51 cm) above the top edge of the filter. See ► HORIZONTAL PROTECTION—OPTION 1 <br /> ► Figure 7. 1 N NOZZLE—PART NO.419335—SINGLE BANK PROTECTION <br /> One 1 N nozzle will protect 10 linear feet(3.1 m)of single filter bank <br /> ►plenum.The nozzle(s) must be mounted in the plenum, 2 to 4 in. <br /> (5 to 10 cm)from the face of the filter, centered between the filter <br /> height dimension,and aimed down the length.See Figure 9. <br /> d 2-4 1N. 10 FT.(3.1 m) <br /> (5-10 cm) MAXIMUM <br /> OMDO .' <br /> • FIGURE 9 <br />