CENTRAL ROC - Page 4

Figure 5 - Sprinkler Location for Sloped Ceiling
Note the minimum distance between sprinklers changes by
the angle of the slope. Verify the Listed flows and pressures
for “maximum” and “1/2 maximum” distances. Dimensions
“A” and “B” are measured along the slope. For angles
greater than 60°, verify with Central's Technical Services
Department.
A — NFPA minimum of 4" (verify “G” dimension minimum of
4"), maximum 1/2 of the Listed spacing that the sprinkler
was calculated for. (i.e., 18' x 18' spacing is maximum of
9'-0" from a wall).
B — For angles 0° to 39° minimum B = 8'-0".
For angles 40° to 45° minimum B = 9'-0".
For angles 46° to 60° minimum B = 9'-6".
Maximum Listed spacing that the sprinkler was calcu-
lated for.
C — Maximum of 3'-0" vertically from the peak.
F — Acceptable for angles 0° to 60°.
G — Minimum of 4", for maximum, refer to “A” and measure
along slope.
B
G
A
A
G
C
F
Figure 6 - Symmetric Sprinkler Location on Opposing Slopes*
The minimum distance between sprinklers on opposing slopes
is measured horizontally, some difficult conditions can be
solved by staggering the sprinklers, thus increasing the
horizontal distance. Remember to measure along the slope
for “A” and “B”. For angles greater than 60°, verify with
Central's Technical Services Department.
A — NFPA minimum of 4", maximum 1/2 of the Listed spacing
that the sprinkler was calculated for.
B — See “E” for minimum spacing. Maximum Listed spacing
that the sprinkler was calculated for.
C — Maximum 3'-0" vertically from the peak.
E — NFPA minimum of 8'-0" (when minimum of 8'-0" cannot
be obtained due to “B”, a baffle must be installed
between these sprinklers to obstruct the discharge
and prevent cold-solder). See “B” for maximum.
F — Acceptable for angles 0° to 60°.
* For unequal spacing down from peak, see Figure 8.
A
A
A
A
E
C
B
F
F
Table 1 - ROC Residential Optima Concealed
Pendent Hydraulic Design Requirements for
NFPA 13D & NFPA 13R Occupancies
Minimum spacing between sprinklers is 8' (2,4 m).
Minimum Design Flow
Coverage Multiple
Area Single Sprinkler Sprinklers
12' x 12' 18 GPM (18.4 psi) 13 GPM (9.6 psi)
(3,7 x 3,7m) 68,1 lpm (1,27 bar) 49,2 lpm (0,66 bar)
14' x 14' 18 GPM (18.4 psi) 13 GPM (9.6 psi)
(4,3 x 4,3m) 68,1 lpm (1,27 bar) 49,2 lpm (0,66 bar)
16' x 16' 18 GPM (18.4 psi) 13 GPM (9.6 psi)
(4,9 x 4,9m) 68,1 lpm (1,27 bar) 49,2 lpm (0,66 bar)
18' x 18' 24 GPM (32.7 psi) 17 GPM (16.4 psi)
(5,5 x 5,5m) 90,8 lpm (2,25 bar) 64,4 lpm (1,13 bar)
20' x 20' 24 GPM (32.7 psi) 17 GPM (16.4 psi)
(6,1 x 6,1m) 90,8 lpm (2,25 bar) 64,4 lpm (1,13 bar)
OBSOLETE