Reliable N252 EC Manual

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 commodi-
ties under ceilings up to and including 35 feet (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 ar-
rangements, 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
(343mm). 12" (305mm) to center line of thermal ele-
ment.
8. This is a Quick Response CMSA sprinkler that
meets the requirements of IFC 2015 for the elimi-
nation of smoke/heat vents in storage occupan-
cies.
9. US Pat. No. 7,624,812
Other Patents Pending.
* See Design Criteria for details, Tables 1 & 2.
Table 1: Design Criteria for FM Class 4 and Cartoned Unexpanded Plastics in Open Frame Racks
Maximum Maximum
Building Height Storage Height*
Feet (m)
25 (7,5)
30 (9,1)
35 (10,7)
* Storage must be a minimum of 3' (0.9m) below the deflector
Reliable Automatic Sprinkler Co., Inc., 103 Fairview Park Drive, Elmsford, New York 10523
Minimum
Pressure
Feet (m) Psi (bar)
20 (6,0) 25 (1.7)
25 (7,6) 30 (2.1)
30 (9,1) 40 (2.8)
Model N252 EC Pendent for
Control Mode
Specifi c Application (CMSA)

Listings and Approvals

FM Approved as a storage sprinkler.

Product Description

The Model N252 EC Pendent are Control Mode Specific
Application Extended Coverage Sprinklers for Storage
Applications. This includes protection of the storage and
display of Class I through IV commodities encapsulated
or unencapsulated, cartoned unexpanded plastics. The
Model N252 EC sprinklers offer maximum coverage areas
/ " up to 14 ft by 14 ft (196 ft
1
2
dard Coverage Control Mode or Control Mode Specific
Application sprinklers with maximum coverage of 100 ft
(9m ). This offers the advantage of decreasing the number
2
of required sprinklers, reducing labor and material costs.
The Model N252 EC Pendent Control Mode Specific Appli-
cation Sprinklers is designed for use in ceiling only sprin-
kler systems with no in-rack sprinklers required.
Maximum Number of
Spacing Design
Feet (m) Sprinklers
14 x 14 (4,3 x 4,3)
14 x 14 (4,3 x 4,3)
12 x 12 (3,6 x 3,6)
Bulletin 908
N252 EC Pendent
) as compared to ESFR or Stan-
2
Hose Stream
Allowance
GPM (L/min)
6 250 (950)
6 250 (950)
8 250 (950)
. E
Rev
2
Water
Supply
Duration
1 Hour
1 Hour
1 Hour