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1 SECTION IV — SYSTEM DESIGN • UL EX. 3470 ULC CEx747 Page 4 -5 10 -1 -02 REV.3 0 Plenum Protection The R -102 system uses the 1W Nozzle (Part No. 419336) or the • 1100 Nozzle (Part No. 430192) or the 1N Nozzle (Part No. 419335) , for plenum protection. The 1W nozzle tip is stamped with 1W and 20 IN. (51 cm) 0 . • the 1N nozzle tip is stamped with 1 N, indicating they are one -flow MAXIMUM nozzles and must be counted as one flow number each. When pro- tecting a plenum chamber, the entire chamber rnust be protected ► regardless of filter length. 1 IN. (2.5 cm) MINIMUM I. • VERTICAL PROTECTION — GENERAL u ► One 1W nozzle or 1100 nozzle will protect 4 linear feet (1.2 m) of 1 t 0 . plenum. The maximum distance from the end of the hood to the 20 IN. (51 cm) first and last nozzle must be no more than 2 ft. (.6 m). After the first MAXIMUM nozzle, any additional nozzles must be positioned at a maximum of 4 ft. (1.2 m) apart down the entire length of the plenum. The t ► plenum width must not exceed 4 ft. (1.2 m). (The 1W or 1100 noz 1 IN. (2.5 cm) • zle can be used on single or V -bank filter arrangements.) See MINIMUM ► Figure 6. 1 2 FT. (.6 m) II MAXIMUM -► ■ FIGURE 7 4FT.(1.2m) 000199 MAXIMUM '' 4 FT. (1.2 m) ��a FT. (1.2 m) • Option 2: The 1 W or 1100 nozzle must be placed perpendicular, 2 FT. (.6 m) MAXIMUM MAXIMUM 8 -12 in. (20 -30 cm) from the face of the filter and angled MAXIMUM to the center of the filter. The nozzle tip must be within ► 2 in. (5 cm) from the perpendicular center line of the fil- ' : � � ter. See Figure 8. -4/4 • 12 IN. (30 cm) 0 1 . 1 MAXIMUM ��(/ ? i 41N. Alliko\. \ w B IN. (20cm) l s. �, /- I� i� MINIMUM � ^ 4 �ii ••: G MUST NOZZLE BE WITHIN TIP �� FIGURE 6 THIS AREA 000197 d ► When protecting plenums with the 1W or 1100 nozzle, two options of coverage are available: 116 0 ► Option 1: The 1100 or 1W nozzle must be on the center line of the FIGURE 8 000200 single or "V" bank filter and positioned within 1 -20 in. (2.5 -51 cm) above the top edge of the filter. See ► HORIZONTAL PROTECTION — OPTION 1 ► Figure 7. 1N NOZZLE — PART NO. 419335 — SINGLE BANK PROTECTION 0 .... One 1N nozzle will protect 10 linear feet (3.1 m) of single filter bank • plenum. The nozzle(s) must be mounted in the plenum, 2 to 4 in. (5 to 10 cm) from the face of the filter, centered between the filter I height dimension, and aimed down the length. See Figure 9. / I 2 - 4 IN. 10 FT. (3.1 m) a (5 - 10 cm) MAXIMUM a - • 000201 1011 I 1I . 000202 1 ► FIGURE 9