Wok Protection
The R-102 system uses two different nozzles for the protection
of woks.
1. A 260 nozzle will protect a wok 14 in. (355 mm) minimum
diameter up to 30 in. (762 mm) maximum diameter. The wok
depth must be no less than 3.75 in. (95 mm) and no greater
than 8 in. (203 mm).
The nozzle is stamped with 260 indicating that this is a
two-ow nozzle and must be counted as two ow numbers.
When using this nozzle, the nozzle must be positioned as
shown in Figure 4-64.
FIGURE 4-64
000261
2. A 1N nozzle will protect a wok 11 in. (279 mm) minimum
diameter up to 24 in. (609 mm) maximum diameter. The wok
depth must be no less than 3 in. (76 mm) and no greater
than 6 in. (152 mm). The nozzle is stamped with 1N indi-
cating that this a one-ow nozzle and must be counted as
one ow number. When using this nozzle, the nozzle must
be positioned anywhere along or within the perimeter of the
wok, aimed at the center, 30 in. to 40 in. (762 mm to 1016
mm) above the hazard surface, as shown in Figure 4-65.
NOTICE
When using this type of wok protection,
only five flow numbers are allowed on a
1.5 gal (5.7 L) system, and only eleven
flow numbers are allowed on a 3 gal (11.4
L) system.
FIGURE 4-65
000261
NOZZLE MUST BE POSITIONED WITHIN 1 IN. (25 mm) RADIUS
OF THE CENTER OF THE WOK, POINTED VERTICALLY DOWN
260 NOZZLE
MINIMUM DEPTH 3.75 IN. (95 mm)
MAXIMUM DEPTH 8 IN. (203 mm)
35 – 45 IN.
(889 – 1143 mm)
14 IN. (355 mm) MINIMUM DIAMETER
30 IN. (762 mm) MAXIMUM DIAMETER
MINIMUM DEPTH
3.0 IN. (76 mm)
MAXIMUM DEPTH
6.0 IN. (152 mm)
11 IN. (279 mm) MINIMUM DIAMETER
24 IN. (609 mm) MAXIMUM DIAMETER
40 IN.
(1016 mm)
30 IN.
(762
mm)
SECTION 4 – SYSTEM DESIGN
UL EX3470 ULC EX3470
2014-SEP-01 REV. 11 PAGE 4-27
R-102 Restaurant Fire Suppression Manual
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