Reliable F1FR Series Bulletin

Model F1FR LO Sprinkler Types
Standard Spray Upright
Standard Spray Pendent
Conventional
Model F1FR LO Recessed Sprinkler Types
Recessed Standard Spray Pendent
For Model F1FR ½" K 5.6 (80), 4.2 (60) & 2.8 (40) Sprinkler
Types refer to Bulletin 014 for technical specifications and
approvals.
Listings & Approvals
1. Listed by Underwriters Laboratories, Inc. (UL)
2. Listed by Underwriters' Laboratories of Canada (ULC)
3. Factory Mutual Approvals (FM)
4. Loss Prevention Council (LPCB, UK)
5. Verband der Schadenversicherer Gmbh
6. EC Certificate: 1438-CPR-0049 (R3612)
1438-CPR-0048 (R3622)
1438-CPR-0047 (R3672)
UL Listing Category
Sprinklers, Automatic & Open
Quick Response Sprinkler
ULGuide Number
VNIV
Product Description
Reliable Models F1FR LO and F1FR LO Recessed Sprinklers
are quick response sprinklers which combine the durability of a
standard sprinkler with the attractive low profile of a decorative
sprinkler.
The Models F1FR LO and F1FR LO Recessed automatic
sprinklers utilize a 3.0 mm frangible glass bulb. These sprinklers
have demonstrated response times in laboratory tests which
are five to ten times faster than standard response sprinklers.
This quick response enables the Model F1FR LO and F1FR LO
Recessed sprinklers to apply water to a fire much faster than
standard sprinklers of the same temperature rating.
The glass bulb consists of an accurately controlled amount
of special fluid hermetically sealed inside a precisely manufac-
tured glass capsule. This glass bulb is specially constructed to
provide fast thermal response. The balance of parts are made
of brass, copper and beryllium nickel.
At normal temperatures, the glass bulb contains the fluid in
both the liquid and vapor phases. The vapor phase can be seen
as a small bubble. As heat is applied, the liquid expands, forcing
Reliable Automatic Sprinkler Co., Inc., 103 Fairview Park Drive, Elmsford, New York 10523
Model F1FR LO
K8.0 (115 metric)
Quick Response
Sprinklers
Upright
Conventional
the bubble smaller and smaller as the liquid pressure increases.
Continued heating forces the liquid to push out against the bulb,
causing the glass to shatter, opening the waterway and allowing
the deflector to distribute the discharging water.
The temperature rating of the sprinkler is identified by the
color of the glass bulb.
Application
Quick response sprinklers are used in fixed fire protection
systems: Wet, Dry, Deluge or Preaction. Care must be exer-
cised that the orifice size, temperature rating, deflector style
and sprinkler type are in accordance with the latest published
standards of the National Fire Protection Association or the ap-
proving Authority Having Jurisdiction. Quick response sprin-
klers are intended for installation as specified in NFPA 13, FM
Global Loss Prevention Data Sheet 2-0 or other applicable
standards. Quick response sprinklers and standard response
sprinklers should not be intermixed.
Installation
The Model F1FR LO Recessed Quick Response Sprinklers
are to be installed as shown. The Model F1 or F2 Escutcheons
illustrated are the only recessed escutcheons to be used with
the Model F1FR LO Sprinklers. The use of any other recessed
escutcheon will void all approvals and negate all warranties.
When installing Model F1FR LO Sprinklers, use the Model D
Sprinkler Wrench or Model W2 Sprinkler Wrench. When install-
ing Model F1FR LO Recessed Pendent or Sidewall Sprinklers,
use the Model GFR2 Sprinkler Wrench.
wrench may damage these sprinklers.
Bulletin 136 December 2020
Pendent
Recessed Pendent
(Model FP Shown)
Any other type of