Reliable F4FR-NF Handbuch

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

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