8.2.5.2 Pendent Sprinklers. Placing the sprinkler too low from the ceiling puts the sprinkler head out of the range of the accumulating heat and lessens its ability to sense danger. 15’ between sprinkler heads, 7.5’ from walls) Minimum distance between sprinkler heads: usually 6’ Distance from ceilings: minimum 1”, maximum 12”. Apply only to the male threads. The simple scientific fact that heat rises is the basic component of fire safety. 8.2.5.2.1 Pendent sprinklers shall be located at least 3 ft (914 mm) away from obstructions such as ceiling fans and light fixtures unless the requirements of 8.2.5.4 are met. Model JL14 Sprinkler Components and Dimensions Figure 1 ... Sprinkler Distance to Ceiling See NFPA 13 See FM Global 2-0 Open Frame, Single, Double, Multiple Row, or Portable Rack Storage of Class I … A cloud ceiling is simply a suspended ceiling that covers only a portion of a room or space below, typically to hide mechanical equipment. Distance from walls: half the distance between sprinkler heads (i.e. That is an urban legend according to a few sprinkler inspectors I've spoken to. The residential code says pendant sprinklers must be at least 3 ft from obstructions such as ceiling fans and lights (as measured from their centers), or you can use this table which relates A) the distance from the sprinkler to the near edge of the obstruction and B) height of the sprinkler's deflector above the bottom of the obstruction. Step 4 - For Upright and Pendent Sprinklers, use a standard wrench. NFPA’s technical advisory program, which gives NFPA members an opportunity to ask questions relating to code requirements, receives multiple questions each week on how to locate sprinklers when cloud ceilings are present. 8.2.5.2.2 The distance shall be measured from the center of the sprinkler to the center of the obstruction. Ceiling Distance 18 x 18 (5.5 x 5.5) 21 (80) 7.6 (0.52) 1 to 4 inches (25 to 100 mm) 20 x 20 (6.1 x 6.1) 23 (87) 9.2 (0.63) Model F1Res76 Residential Pendent Sprinkler Hydraulic Design Criteria Table E Notes: 1. Step 3 - Hand tighten the sprinkler into fitting. Section 8.2.5.1.3 where the sprinkler cannot be located 3 ft away from the obstruction, an additional sprinkler … Find the listing on the sprinkler head, and it should have the distance requirements available. Pendent Sprinklers 175 psi (12 bar) rated Bulletin 019 December 2020. The Concealed Pendent Sprinklers all produce a hemispherical water distribution pattern below the deflector. * * Most sprinkler heads will be installed 1″ from the ceiling. Sprinkler placement is scientific as well as strategic. SPRINKLER HEAD CONCEALED PENDENT TYPE NV007 / NV008 ... ceiling or application of the finish coating to a fixed ceiling. NFPA13 D Section 8.2.5.1.1 Pendent sprinklers shall be located at least 3 ft away from obstructions such as ceiling fans and light fixtures. Sprinkler heads are referred to simply as sprinklers ... for example minimum distance between sprinklers on slopped ceilings ... (pressure and flow must satisfy the relation flow rate = k factor X square root of the pressure • Pendent sprinklers within 1” to 4” below ceiling (unless different in listing) There is no hard and fast rule on the distance. Step 2 - Use only a non-hardening pipe joint compound or tape seal. It depends on the type sprinkler head. 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