9803 19TH AVE SE 2018-01-02 MF Import

NOZZLE PLACEMENT REQUIREMENTS (Continued) Electrostatic Precipitator Protection (Continued) P The 112N nozzle (Part No. 419334) must be centered 10 to 26 in. 1,25 to 66 cm) below the precipitator and aimed to discharge at the center of each precipitator cell. However, if it is Physi- cally impossible to mount the nozzle at 10 to 26 in. (25 to 66 cm) due to precipitator placement, the nozzle may be mounted closer than 10 in. (25 cm). See Figure 23. SEE Oucr OR DUCT II I II PROTECTION _T 10-08 IN.* " MI NOZZLE FOR PRECIPITATOR P00111CTION -IF PHYSICALLY IMPOSSIBLE AT 10 TO 26 IN. I25 TO65 CMI. NOZZLE MAYBE MOUNTED CLOSER THAN 10 IN. 125 ant. FIGURE 23 Plenum Protection r The R-102 system uses the 1W Nozzle (Part No. 419336) or the 0 1 N Nozzle (Part No. 419335) for plenum protection. The 1 W nozzle tip is stamped with 1W and the 1 N nozzle tip is stamped with 1 N. indicating they are both one -flow nozzles and must be counted as one flow number each. 1W NOZZLE — PART NO. 419336 Oie 1W nozzle will protect 4 linear feet (1.2 m) of plenum. The maximum distance from the end of the hood to the first and last nozzle must be no more than 2 ft. (.6 m). After the first nozzle, any additional nozzles must be positioned at a maximum of 4 ft. (1.2 m) apart down the entire length of theplenum. ozzle can plenum width must not exceed 4 ft. (1.2 m). (The ) be used on single or V-bank fitter arrangements.) See Figure 24. `: SECTION IV — SYSTEM DESIGN UL EX. 3470 7-1-96 Page 4-7 REV. 1 2 FT. When protecting plenums with the 1W nozzle, two options of coverage are available: Option 1: The 1W nozzle must be on the center line of the single or "V" bank filter and positioned within 1-20 in. (2.5.51 cm) above the top edge of the filter. See Figure 25. 201N. (51 M) MAXIMUM I IN. 12.5 and MINIMUM FIGURE 25 Option 2: The 1W nozzle must be placed perpendicular, 6-12 in. (20-30 cm) from the face of the fitter and angled to the center of the filter. The nozzle tip must be within 2 in. (5 cm) from the Perpendicular center line of the filter. See Figure 26.