Lava Rock (Ceramic) Char-Broiler Protection
The R-102 system uses the 1N nozzle for all lava rock char-
broiler protection. The nozzle is stamped with 1N, indicating
that this is a one-flow nozzle and must be counted as one flow
number.
One 1N nozzle will protect a hazard which has a maximum
length of 24 in. (609 mm) and a total cooking area which does
not exceed 312 in.
2
(20128 mm
2
). The nozzle tip must be
located 18 in. to 35 in. (457 mm to 889 mm) above the hazard
surface. When using this nozzle for lava rock (ceramic) char-
broiler protection, the nozzle must be positioned anywhere along
or within the perimeter of the maximum cooking area and angled
to the center. See Figure 4-60.
FIGURE 4-60
Natural Charcoal Broiler Protection
The R-102 system uses the 1N nozzle for all natural charcoal
broiler protection. The nozzle is stamped with 1N indicating
that this is a one-flow nozzle and must be counted as one flow
number.
One 1N nozzle will protect a hazard area which has a maximum
length of 24 in. (610 mm) and a total cooking area which does
not exceed 288 in.
2
(18580 mm
2
). The nozzle tip must be
located 18 in. to 40 in. (457 mm to 1016 mm) above the hazard
surface. When using this nozzle for natural charcoal broiler
protection, the nozzle must be positioned anywhere along or
within the perimeter of the maximum cooking area and aimed at
the center of the cooking surface. See Figure 4-61.
The coverage of such appliances only applies when the depth of
the charcoal does not exceed 4 in. (101 mm).
FIGURE 4-61
000259
35 IN.
(889 mm)
MAXIMUM
18 IN.
(457 mm)
MINIMUM
COOKING
AREA
COOKING
AREA
000258
COOKING
AREA
COOKING
AREA
000260
4 IN. (101 mm)
MAXIMUM
DEPTH
18 IN.
(457 mm)
MINIMUM
40 IN.
(1016 mm)
MAXIMUM
000259
SECTION 4 – SYSTEM DESIGN
UL EX3470 ULC EX3470
2014-SEP-01 REV. 11 PAGE 4-25
R-102 Restaurant Fire Suppression Manual
Summary of Contents for R-102
Page 2: ......
