12-12724 - Laserfiche WebLink

Browse Search

• � SECTION IV — SYSTEM DESIGN UL EX3470 ULC EX3470 Page 4-6 REV.7 7-1-09 Plenum Protection(Continued) HORIZONTAL PROTECTiON—OPTION 2 For a plenum, either single or "V" bank, with a linear extension 1 W NOZZLE—PART NO.419336—"V"BANK PROTECTION longer than 10 ft(3.1 m), each bank may be protected using one One 1 W noule will protect 6 linear feet(1.8 m)of"V"bank lenum. 1 N nozzle every 10 ft (3.1 m) or less depending on the overall The nozzie must be mounted horizontally, positioned 1/3 he filter length of the plenum.See Figure 12.The nozzies may point in the height down from the top of the filter.Noules can be located at 6 ft °pp°site directions as long as the entire plenum area is protected, (1.8 m)spacings on longer pienums.The noule must be posftioned and the 10 ft(3.1 m)limitation is not exceeded.See Figure 13.The 0-6 in.(0-15 cm)from the end of the hood to the tip of the noule. nozzle positioning shown in Figure 14 is not an acceptable method See Fgure 10. of protection because the plenum area directly under the tee is not within the discharge pattern of either nozzle. 1 W NOZZLE 1�FT(3.1m)� MAXIMUM I 10 FT(3.1 m) �p�(H� � MA7(IMUM / HEIOHT OF FILTER(H) 8 FT(1.8 m) 70 FT(3.1 m) \ I MAXIMUM M��MUM F�--4 FT --�I----_��' � (72 m) I � MAXIMUM C� � / 30 FT(9.1 m) � FIGURE 12 �� I 10 FT(3.1 m)� MAXIMUM FIGURE 10 �, ►TWO(2) 1 N NOZZLES — PART NO. 419335 — "V" BANK PRO- 10 FT t3.�m) , MAXIMUM TECTION Two 1 N nozzles will protect 10 linear feet (3.1 m) by 4 ft(1.2 m) ��(3.1 m) wide of "V" bank plenum.The nozzles must be mounted in the MAXIMUM plenum,2 to 4 in.(5 to 10 cm)from the face of the filter,centered � between the filter 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 noule.See Figure 11. �( � 30 f-T(9.1 m) 2—4 IN. 2—4 IN. (5—10 cm) (5—10 cm) � FIGURE 13 .A � 00020.7 000207 'L I� 4FT(1.2m) I MAXIMUM —� � 70 FT(3.1 m) MAXIMUM � , / INCORRECT r � �� FIGURE 14 �� FIGURE 11