The Reliable Automatic Sprinkler Co., Inc.,
103 Fairview Park Drive, Elmsford, New York 10523
Model N252 EC Pendent
for Control Mode Specific
Application (CMSA)
Model N252 (SIN RA0842)
Nominal K-Factor = 25.2
An Extended Coverage Sprinkler for
Storage Applications
Features
1. Approved by FM Global for the following storage
applications:
Class 1-4, cartoned unexpanded plastic commodities
under ceilings up to and including 35 ft (10.7 m) high. They
may be used to protect solid piled, palletized, shelf or bin
box and open frame rack storage.*
2. For other storage commodities and storage arrangements,
see FM Global Data Sheets 8-9.
3.
Approved for installation per NFPA 13 (2013) . For
storage commodities, arrangements, and design criteria:
see NFPA 13 chapter 21.
4. Eliminates the need for in-rack sprinklers.*
5. Extended coverage, low pressure, and low flow demand
provides the opportunity to reduce:
• Labor
• Piping and fittings
• Fire pump size
• Tank size
6. 165 °F (74 °C) and 212 °F (100 °C) temperature ratings.
7. Maximum deflector distance from ceiling is 13
1
/
2
”
(343 mm). 12” (305 mm) to center line of thermal element.
8.
This is a Quick Response CMSA sprinkler that meets the
requirements of IFC 2015 for the elimination of smoke/
heat vents in storage occupancies
.
9. US Pat. No. 7,624,812
Other Patents Pending.
*
See Design Criteria for details, Tables 1 and 2.
N252 EC Pendent
Listings and Approvals
FM Approved as a storage sprinkler.
Table 1: Design Criteria for FM Class 4 and Cartoned Unexpanded Plastics in Open Frame Racks
Maximum
Building Height
Feet (m)
Maximum
Storage Height*
Feet (m)
Minimum
Pressure
psi (bar)
Maximum Spacing
Feet (m)
Number
of Design
Sprinklers
Hose Stream
Allowance
gpm (l/min)
Water Supply
Duration
25 (7.5)
20 (6.0)
25 (1.7)
14 x 14 (4.3 x 4.3)
6
250 (950)
1 Hour
30 (9.1)
25 (7.6)
30 (2.1)
14 x 14 (4.3 x 4.3)
6
250 (950)
1 Hour
35 (10.7)
30 (9.1)
40 (2.8)
12 x 12 (3.6 x 3.6)
8
250 (950)
1 Hour
* Storage must be a minimum of 3’ (0.9 m) below the deflector
Multilingual document:
Select your language below
Bulletin 908 Rev. E_Multilingual
Bulletin 908 Rev. E_Multilingual
