Reliable F4FR-NF Manual

Model F4FR-NF
Model F4FR Sprinkler Summary
Sprinkler
Model
K-Factor gpm/psi1/2
(lpm/bar1/2)Orientation Listings & Approvals Max. Working Pressure
psi (bar)
Sprinkler
Identification
Number (SIN)
F4FR 5.6 (80) Concealed Pendent cULus* 175 (12.1) RA0212
Table A
*Note: Listed for use in Light and Ordinary hazard occupancies only.
Features
• Non-Ferrous design specifically tested in an MRI environment
• Cup and skirt fabricated from brass
• Simple sturdy cover attachment
• Smooth aesthetic ceiling profile
• Cover plate is available in a variety of finishes
• Ordinary temperature rating
• Threaded cover plate does not require clips or springs
Product Description
The Model F4FR-NF Non-Ferrous Concealer™ is a quick-
response standard coverage sprinkler that uses either a
135°F (57°C) or a 155°F (68°C) 3mm diameter glass bulb in
a concealed sprinkler frame with a drop-down deflector. This
assembly is recessed into the ceiling and finished with a flat
cover plate. The push-on/thread off cover plate provides ½”
(13mm) of cover adjustment.
The cover plate is attached to the skirt using 135°F (57°C)
ordinary temperature classification solder. When the ceiling
temperature rises, the solder holding the cover plate fuses,
releasing the plate and exposing the sprinkler.
As the temperature increases, the fluid within the glass bulb
expands. Upon reaching activation temperature, the glass
bulb shatters and opens the waterway causing the deflector to
drop into position to properly distribute the water.
The Reliable Model F4FR-NF Non-Ferrous Concealer™
is designed specifically for MRI rooms. The sprinkler
assembly was tested in a laboratory with a magnetic field of
6 Tesla. The test exposed the sprinklers to magnetic fields
and field gradients that exceed a standard peripheral MRI
room environment. There was no recorded influence of the
magnetic field on the sprinklers.
www.reliablesprinkler.com
cULus Listed
Model F4FR-NF Non-Ferrous Quick Response
Concealed Automatic Sprinkler
Bulletin 002 September 2020

Model F4FR Concealed Sprinkler SIN RA0212
Technical Specifications
Style: Concealed Pendent
Threads: 1/2” NPT or ISO 7-R1/2
Nominal K-Factor: 5.6 (80 metric)
Max. Working Pressure: 175 psi (12.1 bar)
Min. Spacing: 6 ft (1.8 m)
Material Specifications
Operating Element: Glass Bulb
Sprinkler Frame: Brass Alloy
Cap: Bronze Alloy
Sealing Washer: Titanium, PTFE Coated
Load Screw: Brass
Deflector: Brass
Cup: Brass
Sprinkler Finishes
Brass (Unfinished)
Sensitivity
Quick-Response
Sprinkler Temperature Ratings
135°F (57°C)
155°F (68°C)
Cover Plate Temperature Ratings
135°F (57°C)
Cover Plate Finishes
(See Table B)
Sprinkler Wrenches
Model G4
Listings and Approvals
cULus Listed
Model F4FR Sprinkler Components and Dimensions Figure 1
Bulletin 002
September 2020
Page 2 of 3
www.reliablesprinkler.com

Installation
Model F4FR-NF sprinklers are intended to be installed
in accordance with NFPA 13, FM Global Property Loss
Prevention Data Sheets, and the requirements of applicable
authorities having jurisdiction.
Do not install The Non-Ferrous Concealer™ in ceilings which
have positive pressure in the space above. In addition,
inspect all sprinklers after installation to ensure that both the
gap between the cover plate and ceiling and the four (4) slots
in the cup are open and free from any air flow impediment.
After a 2-5/8” diameter hole is cut in the ceiling, the sprinkler
is installed with the Model G4 Wrench. When installing a
sprinkler, the wrench is first positioned into the sprinkler/cup
assembly until two wrench tangs fully engage drive slots in the
top of the cup (there are two pairs of drive slots in the cup).
The sprinkler is then tightened into the pipe fitting to a torque
of 8 to18 ft-lbs (11 to 24 N.m). Do not exceed the maximum
recommended torque. Excessive torque may cause leakage
or impairment of the sprinkler.
When inserting or removing the wrench from the sprinkler/
cup assembly care should be taken to prevent damage to the
sprinkler. DO NOT WRENCH ON ANY OTHER PART OF THE
SPRINKLER/CUP ASSEMBLY. Replace any sprinklers that
have been damaged.
Install the cover plate by hand, pushing and then turning the
cover in the clockwise direction until it is tight against the
ceiling.
G4 Wrench
Standard Finishes Special Application Finishes
Chrome Bright Brass
White Finished Bronze
Black Plated
Black Paint
Off White
Chrome Dull
*Note: Other finishes and colors are available on special
order. Consult factory for details. Cover plate custom paint is
semi-gloss, unless specified otherwise.
Cover Plate Finishes* Table B
Maintenance
Reliable Model F4FR series 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.
Ordering Information
Specify:
Sprinkler
• F4FR-NF
Temperature
•
135°F (57°C)
• 155°F (68°C)
Cover Plate Finish
• See Table B
Sprinkler Wrench
•Model G4
Note: Paint or any other coatings applied over the factory
finish will void all approvals and warranties.
Bulletin 002
September 2020
Page 3 of 3
www.reliablesprinkler.com
P/N 9999970241