Reliable F4FR-NF Quick Start Manual

The Non-Ferrous Concealer

Features

1. Completely Non-Ferrous material designed
for MRI rooms.
2. Laboratory tested in an MRI room environ-
ment.
3. Cup and skirt fabricated from brass.
4. Simple sturdy cover attachment.
5. Smooth aesthetic ceiling profile.
6. Available in bright brass, chrome and black
plated, and white or other color painted fin-
ishes.
7. Ordinary temperature rating.
8. Threaded cover plate (Plain or Perforated)
does not require clips or springs.

Listings and Approvals

1. Listed by Underwriters' Laboratories Inc. and UL
certified for Canada (cULus).
2. NYC MEA 258-93-E
Note: Approvals are light and ordinary hazard.

UL Listing Categories

Sprinklers, Automatic & Open
Quick Response Sprinkler

UL Guide Number

VNIV
U.S. Patent No. 4,880,063.

Application

The Reliable Model F4FR-NF Non-
Ferrous Concealer is the only sprin-
®
kler designed specifically for MRI
rooms. A test setup of the sprinkler
assembly was tested in a laboratory
with a magnetic field up to 6 Tesla.
The highest clinical magnet system commercially available
today is 3 Tesla. There was no recorded influence of the
magnetic field on the sprinklers. The test exposed the sprin-
klers to magnetic fields and field gradients that would far ex-
ceed a standard peripheral MRI room environment.
The Model F4FR-NF is the most versatile quick response
sprinkler available. This sprinkler provides the best form of
fire protection by offering an attractive appearance and ½"
(13mm) cover adjustment for ease of installation. The small
diameter cover plate is easily and positively attached and
The Reliable Automatic Sprinkler Co., Inc., 103 Fairview Park Drive, Elmsford, New York 10523
®
blends into the ceiling, concealing the most dependable fire
protection available, an automatic sprinkler system.
The Model F4FR-NF a Non-Ferrous Concealer
signed for use where aesthetic appearance is important. It
is a quick response concealed sprinkler intended for use in
accordance with NFPA 13. The Non-Ferrous Concealer
eliminate the need for precise cutting of drop nipples. The
threaded cover plate assembly can be adjusted without tools
to fit accurately against the ceiling. The fire protection system
need not be shut down to adjust or remove the cover plate
assembly.

Product Description

The Non-Ferrous Concealer
tions uses a 135°F (57°C) 3mm diameter glass bulb in a stan-
dard style sprinkler frame with a drop-down deflector. This
assembly is recessed into the ceiling and concealed by a flat
cover plate. The cover plate and sprinkler cup assemblies
are attached using a strong threaded engagement. This
threaded engagement provides ½" (13mm) of cover adjust-
ment. 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, thus releasing the plate and exposing the sprinkler
inside to ambient temperature. The subsequent shattering
of the sprinkler bulb opens the waterway and causes the
deflector to drop into position to distribute the discharging
water. Any secure engagement between the cover plate and
cup will assure that the drop-down deflector is properly lo-
cated below the ceiling.
Model F4FR-NF
Non-Ferrous Quick Response
Concealed Automatic Sprinkler
for MRI Type Applications
for quick response applica-
®
Bulletin 002 E
Rev.
is de-
®
can
®