46.03
16398 Rev B Updated 04/2021 © 2021 Victaulic Company. All rights reserved.
5.0 PERFORMANCE (CONTINUED)
Layout Criteria – Single Slope
Sprinkler Model
• FL-SA/DS
Slope
• 4:12 Up to and Including 12:12
Flow Rate
• 20 gpm
Deflector Distance Below Peak (See Figure 14A)
• Minimum 16 in.
• Maximum 24 in.
Deflector Distance Below Sloping Roof Deck (See Figure
14a)
• Install with deflector below bottom of top chord to a
maximum of 2 in.
Distance Between Sprinklers Perpendicular To The Slope
• Minimum 4 ft.
• Maximum 8 ft.
Maximum Allowed Sprinkler Throw (Measured
Horizontally)
• Downslope – 16 ft.
Minimum Distance Between Sprinklers Downslope of The
FL-SA/DS (Throw Direction)
• 15 ft. (as measured on the slope) INSTALLATION
• Ensure that the sprinkler deflector is installed with
the deflector parallel to the sloped roof above.
• Centerline of sprinkler must be a minimum of 6"
laterally from face of truss. See Figure 28.
• When two rows of FL-SA/DS sprinklers are utilized,
the adjacent rows of sprinklers must be offset at
least one channel laterally from each other.
• Sprinklers must be installed with the frame arms
perpendicular to the roof slope. See Figure 35.
• For obstruction criteria, see Obstruction section
within this data sheet.
• When installed under a flat sloped ceiling
(noncombustible insulation filled joist channels),
maximum deflector to ceiling distance is the same
as maximum distance below bottom of top chord.
Distanceto be measured to bottom of Insulation.
Hydraulic Calculations
• See Hydraulic Design Section
NOTE
• If a flat sloped ceiling is present utilizing non combustible insulation, the
insulation must completely fill the pockets between the joists, and the
insulation must be secured in place with metal wire netting or equivalent.
The metal wire netting is intended to hold the insulation in place should
the insulation become wetted by the operation of the sprinkler. Attic
sprinklers have not been evaluated for use with spray foam insulation.
FIGURE 11A: SECTION VIEW DS SPRINKLER & DEFLECTOR PLACEMENT AT PEAK
FL-SA/DS
FIGURE 11B: 1 ROW DS SPRINKLER (HIP SHOWN AT CORNER)
FIGURE 11C: 2 ROW DS SPRINKLER (HIP SHOWN AT CORNER)
FIGURE 11: SINGLE SLOPE SPACING CRITERIA
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