Table 3 - 155
°
F & 175
°
F LF Extended Pendent
Hydraulic Design Requirements for NFPA 13D &
NFPA 13R Occupancies (Use with Figure 3)
Design
Criteria
The Model LF Residential Pendent and Recessed Pendent
Sprinklers are UL, C-UL Listed and MEA Approved for use in
accordance with current NFPA standards on wet pipe sprinkler
systems. These sprinklers with a maximum ceiling to top of
sprinkler deflector distance of 4 inches, have been investigated for
use under smooth flat horizontal ceilings with slopes up to 2
inches per foot using the hydraulic design requirements found in
Table 1 or Table 2 as applicable. These sprinklers with a
maximum ceiling to top of sprinkler deflector distance of 8 inches,
have been investigated for use under smooth flat horizontal
ceilings with slopes up to 2 inches per foot using the hydraulic
design requirements found in Table 3. These sprinklers with a
maximum ceiling to top of sprinkler deflector distance of 4 inches,
have also been investigated for use under smooth flat sloping
ceilings with slopes up to 8 inches per foot using the hydraulic
design requirements found in Table 4 as well as the sloped ceiling
"Specific Application Design Criteria" found in Figure 5. When
conditions exist that do not meet all the parameters of the "sloped
ceiling "Specific Application Design Criteria" found in Figure 5, and
when acceptable to the local authority, additional guidance on the
Table 4 - 155
°
F LF Pendent & Recessed Pendent
UL & C-UL Specific Application Sloped Ceiling
Hydraulic Design Requirements for NFPA 13D &
NFPA 13R Occupancies (For use with Figure 5)
Minimum Design Flow
Coverage
Multiple
Area
Single Sprinkler
Sprinklers
12' x 12'
10 GPM (11.1 psi)
8 GPM (7.1 psi)
(3,7 x 3,7m)
37,9 lpm (0,77 bar)
30,3 lpm (0,49 bar)
14' x 14'
12 GPM (16.0 psi)
8 GPM (7.1 psi)
(4,3 x 4,3m)
45,5 lpm (1,10 bar)
30,3 lpm (0,49 bar)
16' x 16'
12 GPM (16.0 psi)
11 GPM (13.4 psi)
(4,9 x 4,9m)
45,5 lpm (1,10 bar)
41,6 lpm (0,92 bar)
18' x 18'
18 GPM (36.0 psi)
13 GPM (18.8 psi)
(5,5 x 5,5m)
68,1 lpm (2,48 bar)
49,2 lpm (1,30 bar)
20' x 20'
20 GPM (44.4 psi)
16 GPM (28.4 psi)
(6,1 x 6,1m)
75,7 lpm (3,06 bar)
60,6 lpm (1,96 bar)
Table 1 - 155
°
F LF Pendent & Recessed Pendent
Hydraulic Design Requirements for NFPA 13D &
NFPA 13R Occupancies
Table 2 - 175
°
F LF Pendent & Recessed Pendent
Hydraulic Design Requirements for NFPA 13D &
NFPA 13R Occupancies
Minimum Design Flow
Coverage
Multiple
Area
Single Sprinkler
Sprinklers
12' x 12'
10 GPM (11.1 psi)
8 GPM (7.1 psi)
(3,7 x 3,7m)
37,9 lpm (0,77 bar)
30,3 lpm (0,49 bar)
14' x 14'
10 GPM (11.1 psi)
8 GPM (7.1 psi)
(4,3 x 4,3m)
37,9 lpm (0,77 bar)
30,3 lpm (0,49 bar)
16' x 16'
11 GPM (13.4 psi)
11 GPM (13.4 psi)
(4,9 x 4,9m)
41,6 lpm (0,92 bar)
41,6 lpm (0,92 bar)
18' x 18'
14 GPM (21.8 psi)
13 GPM (18.8 psi)
(5,5 x 5.5m)
53,0 lpm (1,50 bar)
49,2 lpm (1,30 bar)
20' x 20'
16 GPM (28.4 psi)
16 GPM (28.4 psi)
(6,1 x 6,1m)
60,6 lpm (1,96 bar)
60,6 lpm (1,96 bar)
Minimum Design Flow
Coverage
Multiple
Area
Single Sprinkler
Sprinklers
12' x 12'
10 GPM (11.1 psi)
8 GPM (7.1 psi)
(3,7 x 3,7m)
37,9 lpm (0,77 bar)
30,3 lpm (0,49 bar)
14' x 14'
12 GPM (16.0 psi)
8.5 GPM (8.0 psi)
(4,3 x 4,3m)
45,5 lpm (1,10 bar)
32,2 lpm (0,55 bar)
16' x 16'
12 GPM (16.0 psi)
11 GPM (13.4 psi)
(4,9 x 4,9m)
45,5 lpm (1,10 bar)
41,6 lpm (0,92 bar)
18' x 18'
15 GPM (25.0 psi)
13 GPM (18.8 psi)
(5,5 x 5,5m)
56,8 lpm (1,72 bar)
49,2 lpm (1,30 bar)
20' x 20'
16 GPM (28.4 psi)
16 GPM (28.4 psi)
(6,1 x 6,1m)
60,6 lpm (1,96 bar)
60,6 lpm (1,96 bar)
Minimum Design Flow
Coverage
Multiple
Area
Single Sprinkler
Sprinklers
12' x 12'
11 GPM (13.4 psi)
8 GPM (7.1 psi)
(3,7 x 3,7m)
41,6 lpm (0,92 bar)
30,3 lpm (0,49 bar)
14' x 14'
12 GPM (16.0 psi)
9 GPM (9.0 psi)
(4,3 x 4,3m)
45,5 lpm (1,10 bar)
34,1 lpm (0,62 bar)
16' x 16'
14 GPM (21.8 psi)
11 GPM (13.4 psi)
(4,9 x 4,9m)
53,0 lpm (1,50 bar)
41,6 lpm (0,92 bar)
18' x 18'
14 GPM (21.8 psi)
13 GPM (18.8 psi)
(5,5 x 5,5m)
53,0 lpm (1.50 bar)
49,2 lpm (1,30 bar)
20' x 20'
16 GPM (28.4 psi)
16 GPM (28.4 psi)
(6,1 x 6,1m)
60,6 lpm (1,96 bar)
60,6 lpm (1,96 bar)
Maximum Ceiling to top of Sprinkler Deflector 4 inches.
Maximum Ceiling to top of Sprinkler Deflector 8 inches.
Maximum Ceiling to top of Sprinkler Deflector 4 inches.
Maximum Ceiling to top of Sprinkler Deflector 4 inches.
placement of residential sprinklers on sloped ceilings has been
provided in Figures 6 -15. This information will provide the
minimum spacing requirements necessary for preventing the
wetting (i.e., cold soldering) of the heat responsive element (Bulb)
of a non-operated Central Model LF, which is adjacent to one,
which has operated. In these situations the minimum required
single and multiple sprinkler flow rates given in Table 1, Table 2, or
Table 3 as applicable, should be used. Your local authority should
be consulted to determine the number of sprinklers required in the
hydraulic design area.
The Recessed Pendent Sprinklers are only listed with the Series
BV Res./QR Recessed Escutcheon Assembly. These sprinklers
can be used with any metalic flush or extended escutcheon,
provided the maximum ceiling to top of sprinkler deflector
dimension specified in Table 1, Table 2, Table 3, or Table 4 is
maintained.
The minimum required single and multiple sprinkler flow rates for
systems designed to NFPA 13D or NFPA 13R occupancies are
given in Table 1, Table 2, Table 3, or Table 4 as a function of
temperature rating, ceiling to top of deflector distance, and the
maximum allowable coverage areas. The single sprinkler flow rate
is the minimum required discharge from the most hydraulically
demanding single sprinkler and, the multiple sprinkler flow rate is
the minimum required discharge from each of the total number of
"design sprinklers" as specified in NFPA 13D or NFPA 13R.
OBSOLETE
