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<br /> <br />SECTION IV - SYSTEM DESIGN <br />UL EX. 3470 ULC CEx747 Page 4-2 <br />REV. 3 1'0-1-02 <br />.. Duct Protection - Multiple Nozzle <br /> DUCT SIZI!:S UP TO 135 IN. (343 cm) PERIMETER - 3 <br /> FLOW OPTION <br />. One 1100 Nozzle (Part No. 430912) and one 2W Nozzle <br /> (Part No. 419337) = three flow numbers <br />. 135 in. (343 em) perimeter maximum <br />. No round duct option available <br />. Follow design table in Figure 2 to determine maximum module <br />size for each nozzle <br /> 1100 Module 2W Module <br />Side A Side B Side B Side 8 <br />Maximum Maximum Maximum Maximum <br />in. (cm) in. (cm) in. (cm) in. (em) <br /> - <br />4 (10) 60.0 (152) 23.0 (58) 37.0 (94) <br />5 (13) 60.0 (152) 23.0 (58) 37.0 (94) <br />6 (15) 59.5 (151 ) 22.5 (57) 37.0 (94) <br />7 (18) 59.0 (150) 22.0 (56) 37.0 (94) <br />8 (20) 58.5 (149) 22.0 (56) 36.5 (93) <br />9 (23) 58.0 (147) 21.5 (55) 36.5 (93) <br />10 (25) 57.0 (145) 21.0 (53) 36.0 (91) <br />11 (28) 56.0 (142) 20.5 (52) 35.5 (90) <br />12 (31 ) 55.5 (141 ) 20.0 (51) 35.5 (90) <br />13 (33) 54.5 (138) 19.5 (50) 35.0 (89) <br />14 (36) 53.5 (136) 18.5 (47) 35.0 (89) <br />15 (38) 52.0 (132) 18.0 (46) 34.0 (86) <br />16 (41) 51.0 (130) 17.0 (43) 34.0 (86) <br />17 (43) 49.5 (126) 16.0 (41) 33.5 (85) <br />18 (46) 47.5 (121 ) 14.5 (37) 33.0 (84) <br />19 (48) 46.0 (117) 13.5 (34) 32.5 (83) <br />20 (51 ) 43.5 (111) 12.0 (31) 31.7 (81 ) <br />21 (53) 41.0 (104) 10.0 (25) 31.0 (79) <br />22 (56) 38.0 (97) 7.5 (19) 30.5 (78) <br />23 (58) 33.5 (85) 4.0 (10) 29.5 (75) <br /> .. I Side B .. <br />ISld+1 . . <br />@QQJ ~ <br /> FIGURE 2 <br /> 006521 <br /> <br />Example; Protection is required for a duct that has an "A" dimen- <br />sion of 8.0 in. (20 em) wide and a "B" dimension of 55 in. (140 em) <br />long. <br /> <br />Referring to the table in Figure 2, if the "A" dimension is 8.0 in. (20 <br />em), the "B" dimension must not exceed 58.5 in. (149 em). In this <br />example, the "B" dimension is 55 in. (140 em), therefore, this duct <br />can be protected with a three flow application. <br /> <br />Read over from the 8.0 in. (20 em) line on the table to the 1100 <br />Module column. At that point, the chart shows that the "B" module <br />length for the 1100 nozzle can be 22.0 in. (56 cm). Centerthe 1100 <br />nozzle in that module. The 2W module can now be centered with- <br />.. in the remaining module. <br />