46.03
16398 Rev B Updated 04/2021 © 2021 Victaulic Company. All rights reserved.
5.0 PERFORMANCE (CONTINUED)
Installation
The Specific Application Attic Sprinklers for Protecting
Attics must be installed in accordance with this section.
The FL-SA/BB, FL-SA/GAP and FL-SA/DS Specific
Application Attic Sprinklers comprise an overall protection
scheme which takes into account strategic positioning
for activation sensitivity while providing unique distribution
characteristics specifically designed for attic construction.
These Special Application Sprinklers and this Protection
Scheme cannot be utilized with any "other" spray sprinklers
with the exception of small standalone dormers and similar
isolated compartments/areas requiring 4 or less sprinklers.
The protection methodology utilizing these sprinklers has
been full scale fire tested in the built attic environment. As
such, they must be installed in accordance with the
guidelines set forth within this data sheet. The NFPA 13
Density/ Area prescriptive spacing requirements do not
apply as these sprinklers are not bound by the NFPA 13
"S x L Rules". The positioning and spacing requirements
of this data sheet take precedence over any other
prescriptive requirements that may exist in NFPA 13.
To install the Specific Application Attic Sprinklers, the
following steps shall be taken:
Step 1.
Sprinklers must be oriented correctly as follows:
• Series FL-SA/BB Sprinklers
• At horizontal ridge (peak) – installed in the
upright vertical position with deflector parallel
to the ceiling below (i.e. sprinkler centerline
perpendicular to the ridgeline).
• The FL-SA/BB sprinklers must only be installed
at ridge lines where the truss framing members
run parallel to the long direction of throw of the
FL-SA/BB sprinkler (i.e. sprinkler frame arms are
perpendicular to the roof trusses). See Figure 28.
• Series FL-SA/GAP Sprinklers
• Near eave or under-hip type roofs – installed in
the upright position with deflector parallel to roof
deck (i.e. sprinkler centerline perpendicular to
the roof slope).
• Series FL-SA/DS Sprinklers
• Installed in the upright position with deflector
parallel to roof deck (i.e. sprinkler centerline
perpendicular to the roof slope).
• For this design methodology, the FL-SA/DS
sprinklers may typically be utilized at the Hip
roof area adjacent to the hip line of the roof and
positioned to throw out towards the eaves. Truss
framing members must run parallel to the long
direction of throw of the FL-SA/DS sprinkler. See
FIGURE 35 for reference.
Step 2.
With pipe thread sealant applied to the pipe threads,
hand tighten the sprinkler into the sprinkler fitting.
NOTE
• Do not grasp the sprinkler by the deflector.
Step 3.
Wrench-tighten the sprinkler using only the
appropriate wrench. Wrenches are only to be applied to
the sprinkler wrench flats or wrench hex, as applicable.
NOTE
• Do not apply wrench to frame arms.
FL-SA/DS
FIGURE 35: SPRINKLER FRAME ORIENTATION TO ROOF SLOPE
29