The equipment presented in this bulletin is to be installed in accordance with the latest pertinent Standards of the National Fire Protection Association, Factory Mutual Research
Corporation, or other similar organizations and also with the provisions of governmental codes or ordinances whenever applicable.
ProductsmanufacturedanddistributedbyReliablehavebeenprotectinglifeandpropertyforover80years,andareinstalledandservicedbythemosthighlyqualifiedandreputa-
ble sprinkler contractors located throughout the United States, Canada and foreign countries.
The Reliable Automatic Sprinkler Co., Inc.
(800) 431-1588
Sales Offices
(800) 848-6051
Sales Fax
(914) 829-2042
Corporate Offices
www.reliablesprinkler.com
Internet Address
Manufactured by
Revision lines indicate updated or new data
.
E.G. Printed in U.S.A. 7/07
P/N 9999970286
Recycled
Paper
• Maximum area of coverage per sprinklers is 196
ft
2
(18,2 m
2
). Minimum area of coverage is 100 ft
2
(9,3 m
2
). Maximum spacing between sprinklers is
14 ft (4,3m), minimum spacing between
sprinklers is 8 ft. (2,44m).
• Area/density designs should be the same as 11.2
k-factor standard spray control mode
area/density sprinklers. Otherwise use the same
design criteria as 5.6 or 8.0 k-factor standard
spray control mode sprinklers.
• Minimum flow requirement is based on the
design density applied over the actual area of
coverage per sprinkler. Example 1, a design
density of 0.43 gpm/ft
2
(17.5mm/min) applied
over 14 ft x 14 ft (4,3m x 4,3m) spacing, or 196 ft
2
(18m
2
), would require a minimum sprinkler
design flow rate and pressure of 84.3 gpm (319,2
L/min) at 11.2 psi (0.77 bar). Example 2, a design
density of 0.43 gpm/ft
2
(17.5 mm/min) applied
over 14 ft x 12 ft (4.3 m x 3.7 m) spacing, or 168 ft
2
(15.6 m
2
), would require a minimum sprinkler
design flow rate and pressure of 72.2 gpm (273.3
L/min) at 8.2 psi (0.57 bar).
• Maximum working pressure – 175 psi (12,1 bar).
• Minimum end head pressure - 7 psi (0.5 bar).
• All other design details should be in accordance
with FM Global Data Sheet 2-8N, as well as any
other applicable FM Global Data Sheet.
Maintenance
The Models N252 EC Pendent and Recessed
Pendent Sprinklers should be inspected quarterly
and the sprinkler system maintained in accordance
with NFPA 25, and local jurisdictional requirements.
Do not clean sprinklers with soap and water,
ammonia, or any other cleaning fluids or solvents.
Remove dust by using a soft brush or gentle
vacuuming.
Remove any sprinkler that has been
painted (other than factory-applied) or otherwise
altered after leaving the factory. A stock of spare
sprinklers should be maintained to allow quick
replacement of damaged or operated sprinklers.
Prior to installation, sprinklers should be maintained in
the original cartons and packaging until used to
minimize the potential for damage to sprinkler that
would cause improper operation or non-operation.
