SECTION 4 – SYSTEM DESIGN
UL EX3470 ULC EX3470
PAGE 4-32 REV. 11 2014-SEP-01
R-102 Restaurant Fire Suppression Manual
SPECIFIC APPLICATION BY MODEL
Due to the conguration, application, and/or additional features
that pose protection problems using conventional protection,
noted in the guidelines previously addressed, the following appli-
ances/applications are considered hazard specic.
The following hazard specic applications have been individually
tested and listed by make and model number of the equipment
designated.
Dean Industries Gas Fryer, Model 2424 GTI, 120,000 BTU/
hr. Rating
This specialized gas fryer can be protected with a combination
of a 290 nozzle and a 1W nozzle for low proximity (7 3/4 – 8 in.
(197 – 203 mm) nozzle height only) and two 230 nozzles (Part
No. 419339) for high proximity (45 in. (1143 mm) nozzle height
only).
The maximum dimension of the fry pot is 24 in. x 24 in. (610 mm
x 610 mm).
Nozzles must be positioned and aimed as shown in Figure 4-66.
Note:
For low proximity protection, see Special Piping Layout
in Figure 4-67.
Dean Industries Model GTI Gas Fryer Special Piping
Layout
Section A (Tank to Hood Penetration) Piping Limitations
Maximum Length: 30 ft (9.1 m)
Maximum Rise: 6 ft (1.8 m)
Maximum Number of 90° Elbows: 7
Maximum Number of Tees: 0
FIGURE 4-66
Section B (Hood Penetration to Nozzles) Piping Limitations
1. Piping conguration shall be as shown with ±1/4 in. (6 mm)
tolerance on dimensions.
2. All nozzles shall be at the same elevation.
3. Each pair of appliance nozzles shall be equally spaced from
left-to-right centerline of fryer.
FIGURE 4-67
000284
LOW PROXIMITY (7 3/4 – 8 IN. (196 – 203 mm) NOZZLE HEIGHT)
1 1/8 IN.
(28 mm)
7 3/4 – 8 IN. ONLY
(196 – 203 mm)
1 1/8 IN.
(28 mm)
FRY POT CENTERLINE
TOP OF VAT
AIM POINT
1W NOZZLE
290 NOZZLE
000282
8 IN.
(203 mm)
6 IN.
(152 mm)
1W
290
2 1/4 IN.
(57 mm)
21 IN. (533 mm) or
24 IN. (609 mm)
2 1/4 IN.
(57 mm)
21 IN. (533 mm) or
24 IN. (609 mm)
2 1/4 IN.
(57 mm)
21 IN. (533 mm) or
24 IN. (609 mm)
2 1/4 IN.
(57 mm)
290
1W
290
1W
290
1W
2 3/4 IN.
(69 mm)
2 1/8 IN.
(53 mm)
8 1/4 IN.
(209 mm)
29 5/8 IN.
(752 mm)
2 11/16 IN.
(68 mm)
HOOD PENETRATION
TO 3 GAL (11.4 L) TANK
SECTION A
SPECIFIC DISCHARGE PIPING FOR LOW PROXIMITY PROTECTION OF FOUR DEAN INDUSTRIES MODEL GTI GAS FRYERS
HIGH PROXIMITY (45 IN. (1143 mm) NOZZLE HEIGHT ONLY)
45 IN. ONLY
(1143 mm)
2 1/4 IN.
(57 mm)
2 1/4 IN.
(57 mm)
11 IN.
(279 mm)
TOP OF FRYER
AIM POINT
FRONT EDGE
OF FRY POT
230 NOZZLE
230 NOZZLE
000283
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