1605 SE EVERETT MALL WAY WALMART 2025-09-10

TFP53O Page 3of8 Clearance Space Temperatures for Heated Area' In accordance with Section 8.4.9.2 of the 2010 edition of NFPA 13,when con- Ambient Temperature 40°F 50°F 60°F necting an area subject to freezing and Exposed to (4°C) (10°C) (16°C) an area containing a wet pipe sprinkler Discharge End of Sprinkler Minimum Exposed Barrel Length2, system, the clearance space around Inches the sprinkler barrel of dry-type sprin- (mm) klers must be sealed. Due to tempera- ture differences between two areas,the 40°F o 0 o potential for the formation of conden- (4°C) sation in the sprinkler and subsequent 30°F ice build-up is increased. If this con- (-1°C) o 0 o densation is not controlled, ice build-up can occur that might damage the dry- 20°F 4 0 0 type sprinkler and/or prevent proper (-7°C) (100) operation in a fire situation. 10°F 8 1 Use of the Model DSB-2 Dry Sprin- (-12°C) (200) (25) 0 kler Boot, described in Technical Data Sheet TFP591 and shown in Figure 11, 0°F 12 3 0 can provide the recommended seal. (-18°C) (305) (75) -10°F 14 4 1 (-23°C) (355) (100) (25) -20°F 14 6 3 (-29°C) (355) (150) (75) -30°F 16 8 4 (-34°C) (405) (200) (100) -40°F 18 8 4 (-40°C) (455) (200) (100) -50°F 20 10 6 (-46°C) (510) (255) (150) -60°F 20 10 6 (-51°C) (510) (255) (150) Notes: 1. For protected area temperatures that occur between values listed above,use the next cooler temperature. 2. These lengths are inclusive of wind velocities up to 30 mph(18,6 kph). TABLE B EXPOSED SPRINKLER BARRELS IN WET PIPE SYSTEMS MINIMUM RECOMMENDED LENGTHS Exposure Length Do not install Series DS-2 Dry-Type When using dry sprinklers in wet pipe Sprinkler into any other type fitting. sprinkler systems to protect areas Failure to use the appropriate fitting subject to freezing temperatures, use may result in one of the following: Table B to determine a sprinkler's appropriate exposed barrel length to • failure of the sprinkler to operate prevent water from freezing in the con- properly due to formation of ice necting pipes due to conduction. The over the Inlet Plug or binding of the exposed barrel length measurement Inlet Plug must be taken from the face of the sprinkler fitting to the surface of the • insufficient engagement of the structure or insulation that is exposed Inlet pipe-threads with consequent to the heated area. See Figure 10 for leakage an example. Drainage For protected area temperatures In accordance with the minimum between those given above, the requirements of the NATIONAL FIRE minimum recommended length from PROTECTION ASSOCIATION for dry the face of the fitting to the outside of pipe sprinkler systems, branch, cross, the protected area may be determined and feed-main piping connected to dry by interpolating between the indicated sprinklers and subject to freezing tem- values. peratures must be pitched for proper drainage.