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Sprinkler RES12 N4 I Kj 7W7 FREEDOM° RESIDENTIAL 4 RA A SPRINKLER INSTALLATION GUIDE The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com AVOIDING OBSTRUCTIONS TO SPRINKLER DISCHARGE (Obstruction rules for residential sprinklers are found in section 8.10 of the 2010 edition of NFPA 13.) Positioning Residential Pendent Sprinklers - Obstructions at the Ceiling LJ I a I -•- A Maximum Distance from Distance from Sprinkler Deflector to Bottom of Ceiling to Side of Ceiling Obstruction (Dimension B) Inches mm Obstruction (Dimension A) Less than 1 ft. 6 in. 0 0 (Less than 457 mm) 1 ft. 6 in. to less than 3 ft. 1 25.4 (457 mm to less than .94 m) 3 ft. to less than 4 ft. 3 76 (.91 m to less than 1.2 m) 4 ft. to less than 4 ft. 6 in. 5 127 (1.2 m to less than 1.37 m) 4 ft. 6 in. to less than 6 ft. 7 178 (1.37 m to less than 1.8 m) 6 ft. to less than 6 ft. 6 in. 9 229 (1.8 m to less than 2 m) 6 ft. 6 in. to less than 7 ft. 11 279 (2 m to less than 2.1 m) 7 ft. or greater 14 356 (2.1 m or greater) Residential pendent sprinklers may be located on opposite sides of continuous obstructions up to 4 ft. (1.2 m) wide at the 4' Max. ceiling, as long as the distance from the centerline of the obstruction to the sprinklers (A) does not exceed one-half the maximum A A spacing allowed between sprinklers. Positioning Residential Pendent Sprinklers - Obstructions Along Walls (A) Distance from centerline of sprinkler to side of obstruction. (B) Distance from deflector to bottom of obstruction. B (C) Width of the obstruction. Obstructions up to 30 in. (.8 m) wide (C) located against the wall are permitted C to be protected when (A) is greater than A or equal to (C) minus 8 in. (.2 m) plus (B). C < 30 in. for metric C < .8 m A>(C-8in.)+B A>(C-.2m)+B Form No. F_080190 18.10.25 Rev 16.1.P65