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SECTION IV — SYSTEM DESIGN UL EX. 3470 ULC CEx747 Page 4-5 4 -1 -06 REV. 4 \,_,/ Plenum Protection ► Option 2: The 1W nozzle must be placed perpendicular, 8 -12 in. The R -102 system uses the 1W Nozzle (Part No. 419336) or the (20 -30 cm) from the face of the filter and angled to the • 1N Nozzle (Part No. 419335) for plenum protection. The 1W noz- center of the filter. The nozzle tip must be within 2 in. zle tip is stamped with 1W and the 1N nozzle tip is stamped with ( cm) from the perpendicular center line of the filter. i N, indicating they are one -flow nozzles and must be counted as See Figure 8. one flow number each. When protecting a plenum chamber, the 12 IN. (90 cm) entire chamber must be protected regardless of filter length. MA liko\ XIMUM 4 IN. VERTICAL PROTECTION — GENERAL (10 cm) • One 1W nozzle will protect 4 linear feet (1.2 m) of plenum. The , / i 8 I N . (20 cm) maximum distance from the end of the hood to the first and last ° I� nozzle must be no more than 2 ft. (.6 m). After the first nozzle, any kb *`' additional nozzles must be positioned at a maximum of 4 ft. (1.2 m) NOZZLE TIP °• apart down the entire length of the plenum. The plenum width must MUST BE WITHI THIS AREA ► not exceed 4 ft. (1.2 rn). (The 1W nozzle can be used on single or au . V bank filter arrangements.) See Figure 6. , •ir' 2FT.(.6m) MAXIMUM -► FIGURE 8 000200 MAXIMUM 4 4FT.(1.2m) �� \4FT.(1.2m) 2 Fr (.6 m) MAXIMUM • MAXIMUM HORIZONTAL PROTECTION — OPTION 1 MAXIMUM i 1N NOZZLE — PART NO. 419335 — SINGLE BANK PROTECTION � �/ One 1 N nozzle will rotect 10 li r , p nea f linear (3.1 m) of single filter bank �/ plenum. The nozzle(s) must be mounted in the plenum, 2 to 4 in. 7 (5 to 10 cm) from the face of the filter, centered between the filter i height dimension, and aimed down the length. The nozzle must be ® % ,.� • positioned 0 -6 in. (0 -15 cm) from the end of the hood to the tip of the '" /�, I nozzle. See Figure 9. �. 2 - 4 IN. 10 FT (3.1 m) t FIGURE 6 (5 -10 cm) MAXIMUM 000,97 r ► When protecting plenums with the 1W nozzle, two options of cov- erage are available: ► Option 1: The 1W nozzle must be on the center line of the single 000201 40 or "V" bank filter and positioned within 1 -20 in. I (2.5 -51 cm) above the top edge of the filter. See Figure 7. \I 1 20 IN. (51 cm) FIGURE 9 MAXIMUM `` 000202 1 IN. (2.5 cm) MINIMUM :.::.::;. , 20 IN. (51 cm) i " 1 f MAXIMUM 1 IN. ( 2.5 cm MINIMUM FIGURE 7 000199