Range Protection
The R-102 system uses five different nozzles for the protection
of ranges. Two of the design options require a one-flow nozzle
and three of the design options require two-flow nozzles.
NOTICE
A 13 in. (330 mm) diameter wok pan is the
largest wok size that can be protected on
ranges.
When protecting hot top ranges, the entire
cooking surface must be protected.
Range Protection 1N (1-Flow) Nozzle – High Proximity
Application
No Obstructions
Single and multiple burner ranges can be protected using a 1N
nozzle. The nozzle is stamped with 1N, indicating that this is a
one-flow nozzle and must be counted as one flow number.
When using this nozzle for range protection, the maximum
length of the burner grates being protected with a single nozzle
must not exceed 32 in. (812 mm) and the maximum area of the
burner grates must not exceed 384 in.
2
(24774 mm
2
) per nozzle.
When protecting a range, the 1N nozzle must be located a
maximum of 10 in. (254 mm) from each burner grate centerline
and must be aimed at the center of the cooking surface. See
Figures 4-27 and 4-28.
FIGURE 4-27
FIGURE 4-28
40 IN.
(1016 mm)
30 IN.
(762 mm)
006539
32 IN.
(812 mm)
MAXIMUM
AIMING POINT
10 IN.
(254 mm)
MAXIMUM
10 IN.
(254 mm)
MAXIMUM
1N
NOZZLE
006540
SECTION 4 – SYSTEM DESIGN
UL EX3470 ULC EX3470
2014-SEP-01 REV. 11 PAGE 4-13
R-102 Restaurant Fire Suppression Manual