SECTION 3 – SYSTEM DESIGN
UL EX3830 ULC EX3830
PagE 3-6 REV. 06 2014-NOV-10
KITCHEN KNIGHT II Restaurant Fire Suppression Manual
NOZZLE COVERAGE AND PLACEMENT (Continued)
Appliance Protection (Continued)
TABLE 3-2: DESIGN
Longest
Side
Vat
Coverage
Coverage
with Drip
Option 1
27 3/4 in.
(704 mm)
324 in
2
(20903 mm
2
)
500 in
2
(32258 mm
2
)
Option 2
25 3/8 in.
(644 mm)
371 in
2
(23935 mm
2
)
495 in2
(31935 mm
2
)
2. Small Range
(336 in.
2
(21677 mm
2
) maximum, 28 in.
(711 mm) longest side maximum). Use this when nozzle is
center located.
Two nozzles are available for small range protection: High
proximity and low proximity.
The Model 1H Nozzle (Part No. 551029) is used for high
proximity small range protection. This nozzle is a one flow
nozzle. When using high proximity protection, the range
cannot be under a backshelf. This nozzle must be located
on the front/back centerline of the appliance, 40 in. to
50 in. (1016 mm to 1270 mm) above the cooking surface,
and aimed directly down within the “Nozzle Location area”
depending on the size of the hazard area. See Table 3-3:
Nozzle Flexibility Placement below. See Figure 3-10.
TABLE 3-3: NOZZLE FLEXIBILITY PLACEMENT
(When
using nozzle flexibility, the maximum width that can be
protected is 12 in. (304 mm))
Length – L
Width – W
Front/Rear
in. (mm)
in.
(mm)
in.*
(mm)*
12 (304)
12 (304)
8
(203)
13 (330)
12
(304)
7 1/2 (190)
14 (355)
12 (304)
7
(177)
15 (381)
12
(304)
6 1/2 (165)
16 (406)
12 (304)
6
(152)
17 (431)
12
(304)
5 1/2 (139)
18 (457)
12 (304)
5
(127)
19 (482)
12
(304)
4 1/2 (114)
20 (508)
12 (304)
4
(101)
21 (533)
12
(304)
3 1/2
(88)
22 (558)
12 (304)
3
(76)
23 (584)
12
(304)
2 1/2
(63)
24 (609)
12 (304)
2
(50)
25 (635)
12
(304)
1 1/2
(38)
26 (660)
12 (304)
1
(25)
27 (685)
12 (304)
1/2
(12)
28 (711)
12 (304)
0
(0)
* Distance from centerline, either toward front or toward back, of hazard area,
starting from the reference point.
CL
006180PC
1H
1H
50 IN.
(1270 mm)
40 IN.
(1016 mm)
HIGH
PROXIMITY
12 IN.
(304 mm)
MaXIMUM
WIDTH (W)
28 IN. (711 mm)
MaXIMUM LENgTH
(L)
NOzzLE
LOCaTION
aREa
REFERENCE
POINT
FIGuRE 3-10
The Model 1L Nozzle (Part No. 551026) is used for low prox-
imity small range protection. This nozzle is a one flow nozzle.
The range can be equipped either with or without a back-
shelf.
Either type requires the same nozzle requirements. The
nozzle must be located 22 in. (558 mm) from either end of the
hazard area centered from left to right. It must be 13 in. to 24 in.
(331 mm to 609 mm) above cooking surface, and aimed at a
point one half the distance of whatever the height dimension of
the nozzle is. When determining nozzle and aim point locations,
both measurements are to be taken from the
same
end of the
hazard area. Example: The nozzle is mounted 20 in. (508 mm)
above the cooking surface. The aim point from the edge of the
hazard would then be 10 in. (254 mm) which is one half the
nozzle mounting height dimension. See Figure 3-11.
Note:
Nozzles must be placed at or below the shelf, within the nozzle
height limitations.
006181PC
HazaRD
SURFaCE
EDgE OF
HazaRD aREa
(FRONT OR BaCK)
1L
1L
24 IN.
(609 mm)
(H)
13 IN.
(331 mm)
(H)
1/2
(H)
1/2 (H)
22 IN.
(558 mm)
22 IN.
(558 mm)
FIGuRE 3-11
