Reliable MBEC-14 Manual

The Reliable Automatic Sprinkler Co., Inc., 103 Fairview Park Drive, Elmsford, New York 10523
Model MBEC-14
Extended Coverage
Ordinary & Extra Hazard
Horizontal Sidewall Sprinklers
for Metal Building Applications
Bulletin 169 Rev. F
Bulletin 169 Rev. F
Model MBEC-14
(SIN R6932)
Features
1. Designed to be installed on piping that is sup-
ported by the primary structure, not the purlins.
2. Provides Extended Coverage Ordinary & Extra
Hazard protection to 175 ft2(16.3m2) per sprinkler.
3. Very extra large orifice of nominal K =14 (200)
permits low pressures.
4. Density/Area Demand based upon hazard to be
protected.
5. 165°F (74°C) & 212°F (100°C) temperature rat-
ings.
6. Standard finishes in brass and chrome.
7. Can be used for all editions of NFPA 13 that per-
mit extended coverage sprinklers.
Listings & Approvals
1. Listed by Underwriters Laboratories, Inc. and UL Certified
for Canada (cULus).
2. Certified by FM Approvals
FM Global considers this sprinkler as a
“Quick Response” extended coverage sprinkler.
3. NYC MEA 258-93-E
UL Listing Category
Sprinklers for Storage Protection (Specific Application)
UL Guide Number
VNIV
Patents: US Patent No. 6,889,774 B2
Product Description
The Reliable MBEC-14 Extended Coverage Sprinkler is a
special application sprinkler for the protection of metal buildings
with purlin roof support. The sprinkler has a very extra large
orifice, Nominal K=14 (200).
When the system is designed to NFPA 13 requirements,
MBEC-14 sprinklers provide protection in Ordinary Hazard
(Groups 1 and 2) and Extra Hazard (Groups 1 and 2) Occupan-
cies to 175 ft2(16.3 m2) per sprinkler .
For FM Global, use Table 2 of FM Global Data Sheet 3-26 for
nonstorage occupancies. FM does not permit the use of these
sprinklers in areas with flammable liquids or shielded discharge.
FM Global representatives must be contacted for exact require-
ments. Reliable MBEC-14 sprinklers are to be installed accord-
ing to the design criteria shown in this bulletin. Figure 3 shows
a suggested method of installing the line piping.
Reliable MBEC-14 sprinklers use a levered fusible alloy solder
link.
Design Criteria
Reliable Model MBEC-14 sprinklers are to be used in systems
designed and installed in accordance with NFPA 13, FM Global
requirements and all other local codes and ordinances. The
following design criteria also apply:
• Design Density/Area method sprinkler. Minimum End-
head Pressure: 7.0 psi (0.5 bar) Minimum density: 0.21
GPM/ft2(8.56 Lpm/m2).
• Maximum building height at peak is 32’ (9.8 m). Maximum
protected bay width is 25’ (7.6 m). See Figures 1. & 2.
• Sprinklers may be installed on pipe lines attached to the
top flange of primary roof beams. Sprinklers are to be in-
stalled with deflectors parallel to the floor. See Figure 2.
• Maximum sprinkler spacing along the pipe is 14’ (4.3 m)
and maximum water discharge length from the pipe is
12.5’ (3.8 m). 175 ft2is the maximum coverage area. See
Figures 2 & 3.
• Minimum sprinkler spacing is 7’ (2.1 m) for NFPA and 8’
for FM Global. (This does not apply to back-to-back sprin-
klers separated by the I-beams.) See Figures 2, 3 & 4.
• Deflector to commodity clearance shall be a minimum of
10’ (3.1m). See Figures 2 & 3.
• Miscellaneous and in-process storage of 12’ (3.7 m) for
NFPA applications and 10’ for FM Global is permitted.
• Deflector distance below roof/ceiling is 12” (305 mm) to
16” (406 mm). If there is an interior liner panel installed on
the bottom side of the roof purlins, the acceptable deflec-
tor distance is 4”- 6” below the liner panel. See Figure 3.
• Follow NFPA 13 requirements for obstructions to sprinkler’s
discharge (Extended Coverage Sidewall Spray Sprin-
klers).
• Sprinklers can be installed under a sloping ceiling not ex-
ceeding 2” (50.8 mm) of rise in 12” (305 mm) of run.
• Maximum working pressure is 175 psi (12 bar) at the
sprinkler.
• Available for use in wet, dry, or preaction systems.

2.
Technical Data
Sprinkler
Model
Thread
Size
Orifice
Size
Temperature
Rating
Max. Ambient
Temp. Maximum
Sprinkler
Spacing
Maximum
Bay
Spacing
Maximum
Coverage
Area
Approvals
Sprinkler
Identification
Number
(SIN)
°F °C °F °C
MBEC-14
HSW
¾” NPT
(R¾)
0.70”
(18mm)
165 74 100 38 14ft (4.3m)
14’ - 0 x 12’ - 6
25ft.
(7.6m)
175ft.2
(16.3m2)
cULus
FM
NYC
R6932
212 100 150 66
Maintenance
Model MBEC-14 Sprinklers should be inspected and the
sprinkler system maintained in accordance with NFPA 25. Do
not clean sprinklers with soap and water, ammonia or any other
cleaning fluids. Remove dust by using a soft brush or gentle
vacuuming. Remove any sprinkler that has been painted (other
than factory applied) or damaged in any way. A stock of spare
sprinklers should be maintained to allow quick replacement of
damaged or operated sprinklers. Prior to installation, sprinklers
should be maintained in the original cartons and packaging un-
til used to minimize the potential for damage to sprinklers that
would cause improper operation or non-operation.
Model MBEC-14 Sprinkler Specification
Sprinklers shall be a control-mode, standard response, ex-
tended coverage horizontal sidewall sprinkler specifically listed/
approved for installation on primary structural members (I-
beams) of pre-engineered metal buildings, up to 32 ft (9.8 m)
in height and having 25 ft. (7.6 m) wide bays. Sprinklers shall
be [(cULus Listed) (New York City MEA Approved, 258-93-E)
to protect ordinary and extra hazard] [FM Approved to protect
ordinary hazard] occupancies as well as for miscellaneous and
in-process storage as permitted by [NFPA 13] [FM Global Data
Sheet 3-26]. Sprinklers shall be capable of covering an area of
175 ft2and being installed below the ceiling between 12” (305
mm) and 16” (406 mm). If there is an interior liner panel installed
on the bottom side of the roof purlins, the acceptable deflector
distance is 4”- 6” below the liner panel. Roof/ceilings shall have
slopes not exceeding a pitch of 2/12 (a roof /ceiling slope of
16.7%). Sprinkler frame and deflector to be of bronze construc-
tion. Fusible solder link assembly shall utilize the strut and lever
principle of operation with a [black-painted, 165°F (74°C)] [gray-
painted 212°F (100°C)] beryllium-nickel thermal element. Water
seal assembly shall consist of a Teflon™-coated Bellville spring
washer and brass cap assembly containing no plastic parts.
Extended coverage horizontal sidewall sprinklers shall have a
nominal K-factor of 14.0 (202) and ¾” NPT threaded end con-
nections. Sprinkler temperature rating shall be [Ordinary 165°F
(74°C)] [Intermediate 212°F (100°C)]. Extended coverage hori-
zontal sidewall sprinklers shall be Reliable Model MBEC-14, SIN
R6932 (Bulletin 169).
Ordering Information
Specify:
1. Sprinkler Model
2. Temperature Rating
3. Sprinkler Finish
Finishes(1)
Standard Finishes
Bronze
Chrome Plated
(1) Other colors and finishes are available on
special order. Consult factory for details.
Model H Sprinkler Wrench
Use Model H Wrench for Model
MBEC-14 HSW Sprinkler
removal and installation.

3.
Figure 1

Figure 2
4.

Figure 3
(Suggested Installation)
5.

The Reliable Automatic Sprinkler Co., Inc.
[phone] Sales Offices
[phone] Sales Fax
[phone] Corporate Offices
www.reliablesprinkler.com Internet Address
Manufactured by
Recycled
Paper
Revision lines indicate updated or new data.
EG. Printed in U.S.A. 10/13 P/N 9999970234
The equipment presented in this bulletin is to be installed in accordance with the latest published Standards of the National Fire Protection Association, Factory
Mutual Research Corporation, or other similar organizations and also with the provisions of governmental codes or ordinances whenever applicable.
Products manufactured and distributed by Reliable have been protecting life and property for over 90 years, and are installed and serviced by the most highly
qualified and reputable sprinkler contractors located throughout the United States, Canada and foreign countries.
• Automatic sprinklers
• Flush automatic sprinklers
• Recessed automatic sprinklers
• Concealed automatic sprinklers
• Adjustable automatic sprinklers
• Dry automatic sprinklers
• Intermediate level sprinklers
• Open sprinklers
• Spray nozzles
• Alarm valves
• Retarding chambers
• Dry pipe valves
• Accelerators for dry pipe valves
• Mechanical sprinkler alarms
• Electrical sprinkler alarm switches
• Water flow detectors
• Deluge valves
• Detector check valves
• Check valves
• Electrical systems
• Sprinkler emergency cabinets
• Sprinkler wrenches
• Sprinkler escutcheons and guards
• Inspectors test connections
• Sight drains
• Ball drips and drum drips
• Control valve seals
• Air maintenance devices
• Air compressors
• Pressure gauges
• Identification signs
• Fire department connection
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