Reliable N25 ESFR User manual

Model N25 ESFR Sprinkler
Model N25 Sprinkler w/
Victaulic® IGS™ Style V9
Sprinkler Coupling
Model Nominal K-factor
gpm/psi1/2 (L/min/bar1/2)Approvals Sprinkler Identificaiton Number (SIN)
N25 25.2 (360) FM, CNBOP-PIB RA0912
Model N25 ESFR Pendent Sprinkler Table A
Features
• FM Approved as a quick-response storage sprinkler
• Fusible link operating element
Product Description
The Reliable Model N25 Early Suppression Fast Response
(ESFR) Sprinkler is intended for use against severe fire
challenges. The sprinkler is designed to respond quickly
to a growing fire and deliver a heavy discharge of water to
suppress the fire. The Model N25 is FM Approved as a quick
response storage sprinkler.
The Model N25 ESFR Sprinkler utilizes a levered fusible
alloy solder link in either a 165°F (74°C) or 212°F (100°C)
temperature rating. The sprinkler has a nominal K Factor of
25.2 (metric 360), and is available with 1” NPT or ISO 7-1R1
threads, or with the Victaulic® IGS™ Style V9 Sprinkler
Coupling*.
The small deflector and frame provide a broad, symmetrical,
hemispherical pattern capable of suppressing fires between
sprinklers in high-piled storage areas. At the same time, a high
momentum central core discharge penetrates and suppresses
fires occurring directly beneath the sprinkler in lower height
storage areas.
The N25 ESFR sprinkler is less susceptible to damage due to
the smaller deflector and frame design, and has passed rough
use and abuse testing required for approval without the need
for plastic protectors.
*Note: Victaulic® and IGS™ are trademarks of Victaulic
Company.
www.reliablesprinkler.com
Model N25 ESFR
Pendent Sprinkler
175 psi (12 bar) rated
Bulletin 909 August 2020

Model N25 ESFR Sprinkler SIN RA0912
Technical Specifications
Style: Pendent
Connection: 1” NPT or ISO7 R-1 threads, IGS™
Style V9 Sprinkler Coupling
Nominal K-Factor: 25.2 (360)
Max. Working Pressure: 175 psi (12 bar)
Material Specifications
Thermal Sensor: Beryllium Nickel Solder Link
Sprinkler Frame: Brass Casting
Button: Copper Alloy
Sealing Assembly: Nickel with PTFE
Load Screw: Stainless Steel
Deflector: Bronze
Levers: Stainless Steel
Ejection Spring: Stainless Steel
Sprinkler Finishes
Standard (Brass Only)
Sensitivity
Quick-Response
Temperature Ratings
Ordinary: 165°F (74°C)
Intermediate: 212°F (100°C)
Guards and Shields (for threaded sprinklers only)
K25 Guard (Intermediate level ONLY)
S-5 Water Shield (Intermediate level ONLY)
Sprinkler Wrench
Model W5
Listings and Approvals
FM Approved
CNBOP-PIB
Model N25 Sprinkler Components and Dimensions Figure 1
Model N25 ESFR Sprinkler with Model 25 Guard (ONLY for intermediate level use on threaded sprinklers) Figure 2
Bulletin 909
August 2020
Page 2 of 5
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Model N25 ESFR Commodity Selection and Design Criteria Overview Table B
Storage Type NFPA FM GLOBAL
Sprinkler Type ESFR Storage
Response Type ESFR QR
System Type Wet Wet
Temperature Rating °F (°C) 165, 212 (74, 100) 165, 212 (74, 100)
Roof Construction See NFPA 13 See FM Global 2-0
Ceiling Slope See NFPA 13 See FM Global 2-0
Maximum Coverage Area See NFPA 13 See FM Global 2-0
Minimum Coverage Area See NFPA 13 See FM Global 2-0
Maximum Spacing See NFPA 13 See FM Global 2-0
Minimum Spacing See NFPA 13 See FM Global 2-0
Minimum Clearance to Commodity See NFPA 13 See FM Global 2-0
Sprinkler Distance to Ceiling See NFPA 13 See FM Global 2-0
Open Frame, Single, Double, Multiple
Row, or Portable Rack Storage of Class
I - IV Commodity and Group A Plastic
See NFPA 13 See FM 2-0 and 8-9
Solid Pile or Palletized Storage of Class
I - IV Commodity and Group A Plastic See NFPA 13 See FM 2-0 and 8-9
Idle Pallet Storage See NFPA 13 See FM 2-0, 8-9 and 8-24
Rubber Tire Storage See NFPA 13 See FM 2-0 and 8-3
Rolled Paper Storage See NFPA 13 See FM 8-21
Flammable Liquid Storage See NFPA 30 See FM 7-29
Aerosol Storage See NFPA 30B See FM 7-31
Auto Components in Portable Racks N/A N/A
Bulletin 909
August 2020
Page 3 of 5
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Installation
Model N25 sprinklers are intended for installation in accordance
with NFPA 13 and FM Loss Prevention Data Sheets 2-0 and
8-9, as well as the requirements of any Authorities Having
Jurisdiction. See Table B for information on NFPA and FM
Global design criteria for the Model N25 sprinklers.
For threaded sprinklers only, use the Model W5 sprinkler
wrench for installation (Figure 3). Any other type of wrench may
damage the sprinkler. A grooved wrench boss is provided on
the sprinkler to limit the potential for the wrench to slip during
installation.
Model N25 sprinklers should be tightened between 14 - 40
lbs-ft (19 - 54 N.m) torque. Do not tighten sprinklers over the
maximum recommended torque. Exceeding the maximum
recommended torque may cause leakage or impairment of the
sprinklers.
For grooved sprinklers, push the IGS™ Style V9 Sprinkler
Coupling onto the grooved outlet until contact with the center
leg of the gasket occurs. Align the sprinkler frame arms and
the pads of the coupling with the sprinkler piping and tighten
the coupling until the pads of the coupling meet. For additional
information, please reference Victaulic® technical bulletin I-V9.
Caution: When handling sprinklers, hold sprinklers only by the
frame arms and do not apply any force on the link assembly.
Damaged sprinklers must be replaced immediately.
Maintenance
Reliable Model N25 sprinklers should be inspected and the
sprinkler system maintained in accordance with NFPA
25, as well as the requirements of any Authorities Having
Jurisdiction.
Prior to installation, sprinklers should remain in the original
cartons and packaging until used. This will minimize the
potential for damage to sprinklers that could cause improper
operation or non-operation.
Do not clean sprinklers with soap and water, ammonia liquid or
any other cleaning fluids. Remove dust by gentle vacuuming
without touching the sprinkler.
Replace any sprinkler which has been painted (other than
factory applied). A stock of spare sprinklers should be
maintained to allow quick replacement of damaged or operated
sprinklers.
Failure to properly maintain sprinklers may result in inadvertent
operation or non-operation during a fire event.
Guarantee
For the Reliable Automatic Sprinkler Co., Inc. guarantee, terms,
and conditions, visit www.reliablesprinkler.com.
Note: 1” S/142 IGS™ grooved welded
outlets are also available from Reliable.
Ordering Information
Specify:
• Sprinkler: [N25]
• Temperature Rating: [165°F (64°C)] [212°F (100°C)]
• End Connection: [1” NPT] [ISO7 R-1]
[Victaulic® IGS™ Style V9 Sprinkler Coupling]
Victaulic® IGS™ Style V9
Sprinkler Coupling installation
bit - One bit provided in each
box of 25 sprinklers.
Model W5 Sprinkler Wrench Figure 3
Bulletin 909
August 2020
Page 5 of 5
www.reliablesprinkler.com
P/N 9999970287