Figure 1 - BVR Sidewall Sloped Ceiling Design Guidelines
Sidewall Located at the Peak
• Locate sidewalls at the peak with their deflectors parallel to
the slope.
• Number of heads to be calculated shall conform to the
appropriate NFPA standard being used for design.
• Maximum number of sidewalls at the peak is unlimited.
• Cathedral ceiling applications: An 8" minimum beam or
lintel is required at the peak.
• a: minimum: 4"
(101,6 mm)
maximum:
one-half the maximum calculated spacing
• b: minimum: 8'-0"
(2,4 m)
maximum: 16'-0"
(4,9 m)
Sidewalls Located Along the Slope
• Up to three sidewalls along each side of the slope can be located with their deflectors parallel to the slope.
• All hydraulic criteria per the appropriate NFPA standard applies.
Note: If three sidewalls are present along one wall of one slope, all three must be calculated regardless of the NFPA
standard being used for design.
• Maximum number of sprinklers per compartment is six.
• For cathedral ceiling applications, an 8" minimum beam or lintel is required at the peak.
• a: minimum: 4"
(101,6 mm)
maximum: one-half the maximum calculated spacing
36' MAX.
a
a
b
b
20' MAX.
MEASURED
ALONG SLOPE
48' MAX.
8'-0"
MIN.
D = MAXIMUM
SLOPE
8:12 (33.7
O
)
D
D
MAXIMUM 8'-0" OPENING
ALLOWED IN PERIMETER WALLS
D = MAXIMUM
SLOPE
8:12 (33.7
O
)
a
b
b
MEASURED
ALONG SLOPE
18' MAX.
48' MAX.
MAXIMUM 8'-0" OPENING
ALLOWED IN PERIMETER WALLS
a
b
a
b
MEASURED
ALONG SLOPE
D
MAXIMUM 8'-0" OPENING
ALLOWED IN PERIMETER WALLS
a
• b: minimum: 8'-0"
(2,4 m)
maximum: 16'-0"
(4,9 m)
Figure 2 - Model BVR Recessed Sidewall
(bottom view)
2-1/2" (63,5mm)
3/4" Max.
(19,1mm)
3/8" Min.
(9,5mm)
Face of
Reducing
Coupling
1-13/16" (46,0mm) Max.
Model BV Res./QR
Recessed Escutcheon
2-7/8" (73,0mm)
Support
Cup
Face of Wall
1-7/16" (36,5mm) Min.
1-1/2" (38,1mm)
Minimum Hole
in Wall is
2" (50,8mm),
Maximum is
2-1/2" (63,5mm)
1-13/16" (46,0mm)
Note: Central's Model 65 or 401 escutcheons may be used. When
using Central's Model 65 ceiling escutcheon, the face of the
reducing coupling should be
1
/
8
"(3,2mm)
±
1
/
16
"(1,6mm)
beyond wall line.
Figure 3 - Model BVR Sidewall
WRENCH
FLAT
ELEVATION VIEW
TOP OF DEFLECTOR
7/16"
(11,1 mm)
2-1/2 (63,5 mm)
1/2" NPT
7/16" (11,1 mm) MAKE-IN
OBSOLETE
