46.03
16398 Rev B Updated 04/2021 © 2021 Victaulic Company. All rights reserved.
5.0 PERFORMANCE (CONTINUED)
Layout Criteria – Gable
Sprinkler Model
• FL-SA/BB
Flow Rate
• ≤ 40 ft. span: 24 gpm
• >40 ft. up to and including 60 ft. span 38 gpm
Distance Between Sprinklers Along Ridge
• Minimum 4 ft.
• Maximum 6 ft.
Deflector Distance Below Ceiling
• Minimum 16 in.
• Maximum 24 in.
Lateral Maximum Distance From Peak
• 6 in.
Distance From Hip Apex Or Wall
• Maximum 3 ft.
Installation
• When installed for Peak protection, the FL-SA/BB
Sprinkler has a zone of protection of 60 ft. wide (as
measured horizontally) across the ridgeline. The
maximum zone of protection on either side of the
ridgeline is 30 ft. (as measured horizontally). The
zone of protection along the ridgeline is 6 ft. per FL-
SA/BB sprinkler. (3 ft. to either side)
• When a FL-SA/BB sprinkler is installed under a
horizontal Ridge, the deflector is to be positioned
parallel with the floor/ceiling below. (Regardless of
allowed offset from directly below ridge)
• Maximum span for FL-SA/BB sprinkler to cover is 60
ft wide attic.
• Sprinklers must be installed with the frame arms
perpendicular to the trusses.
• A minimum of 6" must be kept from the sprinkler
and the lateral face of any truss. (see Figure 28).
• For obstruction criteria, see Obstruction section
within this data sheet.
• Minimum lateral distance from FL-SA/BB and FL-SA/
GAP is 6 ft.
• Minimum lateral distance from FL-SA/BB and FL-
SA/DS is 4 ft.
• When installed under a flat sloped ceiling
(noncombustible insulation filled joist channels)
maximum deflector to ceiling distance is measured
to the bottom of the insulation.
HYDRAULIC CALCULATIONS
• See Hydraulic Design Section
TRUSS MEMBERS MUST BE
PARALLEL WITH DIRECTION
OF THROW OF FL-SA/BB
SPRINKLERS
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 9: GABLE LAYOUT CRITERIA
MODEL FL-SA/BB
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