Tyco Fire Product CENTRAL Omega HEC-12EC PRO User manual

1⁄2"Orifice
Horizontal
Sidewall
Automatic
Sprinkler
Omega HEC-12ECPRO
ProhibitorTM
Product
Description
occupancies in accordance with
current NFPA 13 Standards (for
up to 16' x 20' coverages).
For all models of ProhibitorTM
Sprinklers, an optional 35⁄8" diameter
light gauge escutcheon closure plate is
available, for use where the wall
penetration is greater than the
recommended 21⁄4" diameter. The
escutcheon closure plate fits between
the base of the escutcheon and the
mounting surface.
For all models of ProhibitorTM
Sprinklers, an optional 41⁄2" diameter
x 1⁄8" thick security closure plate is
available for use where additional
security is a consideration. The
security closure greatly reduces the
possibility of inserting a tool, prybar or
other device behind the sprinkler. The
security closure plate fits between the
base of the escutcheon and the
mounting surface.
For all models of ProhibitorTM
Sprinklers, the optional Ident-A-FireTM
feature is available to provide an alarm
signal upon activation of the sprinkler.
ProhibitorTM Sprinklers are available
in two standard finishes, brass and
chrome plated. Their mating
escutcheon is available in three
standard finishes, brass, chrome plated
and white painted, with additional
special finishes available.
Operation: A fusible alloy pellet is
compressed with a bearing disc into a
copper housing by a ball plunger. Heat
is absorbed by the heat collecting fins
and conducted to the alloy pellet. At
the rated temperature the alloy melts,
causing the ball plunger to drop,
freeing balls from the retaining groove.
This movement allows system water
pressure to force the orifice sealing
mechanism and deflector assembly
open. Water is then discharged in a
designed flow pattern.
The Omega ProhibitorTM Model HEC-
12EC PRO Automatic Sprinklers have
been specifically designed for use in
institutional occupancies, such as
correctional facilities and mental health
facilities, where the occupants may
attempt to tamper with or otherwise
employ the sprinkler to injure
themselves or others.
The horizontal sidewall style
ProhibitorTM HEC-12EC PRO sprinklers
are recessed into the mounting surface
with only a portion of the heat
collecting fin assembly projecting into
the protected space. The heat
collecting assembly has an average
breakaway load of 68 lbs., and a
maximum breakaway load of 85 lbs.
Unlike other institutional sprinklers, the
escutcheon plate and optional closure
plates are firmly attached to the
recessed sprinkler body with tamper
resistant retaining screws.
The Omega ProhibitorTM sprinklers
are designed with an aesthetically
pleasing, low profile silhouette. They
feature a spray pattern that has been
shown to be effective in the control or
extinguishment of fire.
The Model HEC-12EC PRO carries
two separate Listings* by Underwriter's
Laboratories for use as:
1. An Extended Coverage Quick
Response Sprinkler that qualifies
for installation at 4"-12" below the
ceiling in light hazard occupancies
in accordance with current NFPA
13 Standards (for up to 16' x 18'
coverages.
2. An Extended Coverage Sprinkler
that qualifies for installation 4"-6"
below the ceiling in light hazard
Manufactured by: Central Sprinkler Company
451 North Cannon Avenue, Lansdale, Pennsylvania 19446
Extended Coverage Quick Response (16'x18')
Extended Coverage (16'x20')
Institutional Sidewall Automatic Sprinkler
11-94
No. 1-10.0
HEC-12ECPRO
OBSOLETE

2
Figure 1
HEC-12EC PRO
Finished Ceiling
Finished Wall
Closure Plate (Optional)
Rigid Support Collar with Hex Bolt (to
prevent movement of sprinkler head
away from finished wall surface)
Retaining Collar
Branch
Line Fitting
1" N.P.T. Steel Nipple
1" x 1/2" N.P.T. Reducer
Escutcheon
Tamper-Resistant Screw
1/2" 1/4" ±1/16"
3/4"
2 3/4"
3/8"
A
2 1/4" Dia. Hole in Wall
2 1/2" Escutcheon
4 1/2" Dia. (Security Closure Plate)
3 5/8" Dia. (Escutcheon Closure Plate)
1 7/16" ±1/16" No Closure Plate
1 3/8" ±1/16" Escutcheon Closure Plate
1 5/16" ±1/16" Security Closure Plate
Note: The special tamper-proof socket must be used for installation or removal of the tamper-resistant retaining screws.
Rigid Support Collar with Bolt
(Part #162-018-01) Tamper-proof Socket
(Part #160-07-000)
Omega HEC Sprinkler Wrench
(Part #15932000)
OBSOLETE

3
Technical
Data
Design Requirements — Extended Coverage Quick Response Applications
Design
Data
*Teflon is a trademark of the DuPont Corp.
Coverage Area Minimum "A"
Width Throw Flow Deflector Distance Temperature
(Ft.) (Ft.) (pressure) Below Ceiling Rating
16 18 29 gpm (26.8 psi) 4" - 6" 160oF/71oC
16 18 30 gpm (28.7 psi) 6" - 12" 160oF/71oC
16 20 32 gpm (32.7 psi) 4" - 6" 160oF/71oC
Coverage Area Minimum "A"
Width Throw Flow Deflector Distance Temperature
(Ft.) (Ft.) (pressure) Below Ceiling Rating
16 16 26 gpm (21.6 psi) 4" - 12" 145oF/63oC;160oF/71oC
16 18 29 gpm (26.8 psi) 4" - 6" 145oF/63oC
16 18 30 gpm (28.7 psi) 6" - 12" 145oF/63oC
In Extended Coverage Quick Response Applications, the Model HEC-12EC PRO
Sprinklers are listed for installation in light hazard occupancies only.
Installation Sequence
Step 1. The sprinkler must be
installed in the horizontal position 4"
to 12" below ceiling.
Step 2. Install the steel nipple into
the branch line fitting, then slide the
rigid support collar over the nipple
prior to installing the 1" x 1⁄2" reducing
coupling. The face of the sprinkler
fitting should be installed:
(a) 17⁄16" (±1⁄16") behind the finished
wall if no closure plate is
utilized.
(b) 13⁄8" (±1⁄16") behind the finished
wall if the light gauge
escutcheon closure plate is
utilized.
(c) 15⁄16" (±1⁄16") behind the finished
wall if the security closure
plate is utilized.
The sprinkler nipple must be fitted
with the rigid support collar to prevent
movement of the sprinkler away from
the finished wall surface (see
installation diagram on page 2).
Step 3. Use only a non-hardening
pipe joint compound or Teflon* tape.
Apply to the male threads only.
Model: HEC-12EC PRO
Style: Horizontal Sidewall
Orifice Size: 1⁄2" (12.7 mm)
K Factor: 5.6 (80.08)
Thread Size: 1⁄2" (12.7 mm) N.P.T.
Temperature Rating: 145°F/63°C,
160oF/71oC
Approvals: U.L., U.L.C.,
M.E.A. (46-92-M Vol. II)
Maximum Working Pressure: 175 psi
Factory Hydro Test: 100% at 500 psi
Standard Finishes:
Sprinkler: brass, chrome plated
Escutcheon: brass, chrome plated,
white painted
Escutcheon Closure Plate: brass,
chrome plated, white painted
Security Closure Plate: chrome
plated, brass plated,
white painted
Length: 23⁄8" (60.3 mm)
Width: 2" (50.8 mm)
Weight: 6.8 oz. (193 grams)
ProhibitorTM sprinklers must be
installed in accordance with current
NFPA 13. Deviations from these
requirements and standards, or any
alteration to the sprinkler itself, will
void any warranty made by Central
Sprinkler Company. In addition,
installation must also meet local
government provisions, codes, and
standards as applicable.
The system piping must be properly
sized to ensure the proper flow rate at
the sprinkler.
Prior to installation, check for
proper model, style, orifice size, and
temperature rating. Install sprinklers
after the piping is in place to avoid
mechanical damage; replace any
damaged unit. Wet pipe systems
must be protected from freezing.
Upon completion of the installation,
the system must be tested per
recognized standards.
In the event of a thread leak,
remove the unit, apply new pipe joint
compound or tape, and reinstall.
Design Requirements — Extended CoverageApplications
Installation Step 4. Hand tighten the sprinkler into
the reducing coupling. Use an Omega
HEC sprinkler wrench to tighten the
unit into the fitting. A leak tight joint
requires the application of only 7 to 14
ft.-lbs. of torque. A tangential force of
14 to 28 lbs. delivered through a 6"
long handle will deliver adequate
torque. Torque levels over 21 ft.-lbs
may distort the orifice seal, resulting in
leakage.
Step 5. During installation of the
sprinkler, check the alignment of
retaining collar holes with final
orientation of sprinkler escutcheon.
Step 6. To install the escutcheon plate
(and closure plate if applicable),
align it (them) with and press it (them)
over the sprinkler body until the outer
edge of the escutcheon (or closure
plate) meets the mounting surface. Do
not over or under tighten the sprinkler
to compensate for inaccurate
escutcheon plate adjustment.
Step 7. Install the tamper resistant
retaining screws through the
escutcheon and into the retaining
collar, thereby drawing the escutcheon
In Extended Coverage Applications, the Model HEC-12EC PRO Sprinklers are listed for
installation in light hazard occupancies only.
OBSOLETE

©1994 Central Sprinkler Company
Printed in U.S.A.
It is advisable to have sprinkler
systems inspected regularly by a
qualified inspection service. Length of
time between such inspections can
vary due to accessibility, ambient
atmosphere, water supply, and site
activity.
Do not attempt to re-assemble or
otherwise reuse a sprinkler that has
operated. Replace any sprinkler
exhibiting corrosion or damage; always
use new sprinklers of the same type
and temperature rating as replacements.
Because the discharge pattern is
critical to protection of life and property,
nothing should be hung or attached to
the sprinkler unit that would disrupt the
discharge pattern. Such obstructions
must be removed. In the event that
construction has altered the original
configuration, additional sprinklers may
need to be installed to maintain the
protection level.
Do not attempt to replace sprinklers
without first removing the fire protection
system from service. Be certain to
secure permission from all Authorities
Having Jurisdiction , and notify all
personnel who may be affected during
system shutdown. A fire watch during
maintenance periods is a
recommended precaution.
To remove the system from service
mode, first refer to the system
operating guide and valve instructions.
Drain water and relieve pressure in the
pipes. Remove the existing unit and
install the replacement, using only the
special sprinkler wrench. Be certain to
match model, style, orifice, and
temperature rating.
A fire protection system that has
been shut off after activation should be
returned to service immediately.
Inspect the entire system for damage
and replace or repair as necessary.
HEC-12EC PRO.1
Central Sprinkler Company
451 N. Cannon Avenue, Lansdale, PA 19446
Phone [phone]
FAX [phone]
Sprinklers that did not operate but were
subjected to corrosive elements of
combustion or excessive temperatures
should be inspected, and replaced if
need be. The Authority Having Jurisdic-
tion will detail minimum replacement
requirements and regulations.
Guarantee: Central Sprinkler
Company will repair and/or replace any
product found to be defective in material
or workmanship within a period of one
year from date of shipment. Please refer
to the current Price List for further
details of the warranty.
(and closure plate) up tight against the
mounting surface. The tamper resistant
retaining screws can only be installed or
removed using the special tamper-proof
socket.
Caution: Special care must be taken
when installing with a CPVC system.
Sprinklers must be installed after the
manufacturer's recommended setting
time for the primer and cement to
ensure that neither accumulate within
the sprinkler.
Special care must be taken when
installing with a copper system.
Sprinklers must be installed only after
the inside of the sprinkler nipple and
associated fittings have been wire
brushed to remove any flux. Residual
flux can cause corrosion and in
extreme cases can impair proper
sprinkler operation.
Sprinklers must be handled carefully.
They must not be transported or stored
where ambient temperatures may
exceed 100oF/38oC. For best results,
store them in a cool, dry location in the
original shipping package.
Do not install sprinklers that have
been dropped or visibly damaged.
Sprinklers must never be painted,
coated, plated, or altered in any other
way from manufactured condition or
they may not function properly. Any
sprinklers altered in such a manner
must be replaced.
The owner is responsible for the
proper working condition of all fire
protection devices and accessories.
The NFPA Standard 25 entitled,
“Inspection, Testing and Maintenance
of Water-Based Fire Protection
Systems” , contains guidelines and
minimum maintenance requirements.
Furthermore, the local Authority Having
Jurisdiction may have additional
regulations and requirements for
maintenance, testing, and inspection
that must be obeyed.
Care &
Maintenance
Ordering Information: When placing
an order, indicate the full product name.
Please specify the quantity, model,
style, orifice size, temperature rating,
sprinkler finish, escutcheon finish,
closure plate(s) and finish, sprinkler
wrench and special tamper-proof socket.
For special painted escutcheon
finishes, the customer must provide
quick-dry paint preferably in a lacquer
base to ensure proper color duplication.
Without which Central Sprinkler
Company cannot be responsible for
acceptable color matching.
Availability and Service: Central
sprinklers, accessories, and other
products are available throughout the
U.S. and Canada, and internationally,
through a network of Central Sprinkler
Company distribution centers. You may
write directly to Central Sprinkler
Company or call [phone] for the
distributor nearest you.
Patents: The Omega ProhibitorTM
Automatic Sprinklers are protected
under U.S. Patent No. 4,491,182.
Additional patents are pending.
Conversion Table:
1 inch = 25.400 mm
1 foot = 0.3048 M
1 pound = 0.4536 kg
1 foot pound = 1.36 Nm
1 psi = 6.895 Kpa
= 0.0689 bar
= 0.0703 kg/cm2
1 U.S. gallon = 3.785 dm3
= 3.785 liters
Conversions are approximate.
Ordering
Information
OBSOLETE