Tyco Fire Product CENTRAL Omega EC-20A User manual

Residential
Extended Coverage
Quick Response Extended Coverage
Product
Description 1⁄2
" (15 mm)
Orifice
Adjustable
Pendent
Automatic
Sprinkler
The Omega Model EC-20A
Sprinkler is a low profile, aesthetically
pleasing, ceiling mounted sprinkler
that offers a high degree of protection
for human life. It operates five to six
times faster as a quick response
sprinkler than a standard sprinkler
and features a spray pattern that has
been shown to be more effective in
the control of fires.
The Model EC-20A incorporates
two significant cost-saving features: a
unique deflector that provides a much
greater area of coverage than most
other sprinklers and a special
escutcheon assembly that provides
for 7⁄8" (22.2 mm) of field adjustment
resulting in an easily accomplished,
tight fit against the ceiling.
The Model EC-20A carries a triple
Listing by Underwriters Laboratories
for use as a Residential Sprinkler, an
Extended Coverage Sprinkler and a
Quick Response Extended Coverage
Sprinkler. It qualifies for installation in
residential and light hazard
occupancies in accordance with
current NFPA 13, NFPA 13D, or
NFPA 13R Standards.
The Model EC-20A has a
maximum working pressure of
175 psi.
The Model EC-20A is available in
three standard finishes, chrome
plated, brass plated or white painted.
Its mating escutcheon plate is
available in three standard finishes,
chrome plated, brass plated or white
painted. The Model EC-20A is
shipped with a protective plastic cap.
Technical
Data
Factory Hydro Test: 100% at 500 psi
(34.5 bar)
Standard Finishes:
Sprinkler: brass, chrome plated, white
and off-white painted
Escutcheon Plate: brass, chrome
plated, white and
off-white painted
Adjustable Range Below Ceiling:
3/8" to 11/4"
(9.5 mm to 31.8mm)
Highest Allowable Ambient Storage
Temperature: 100°F/38°C
Length: 2 7/16" (61.9 mm)
Width: 11/4" (31.8 mm)
Weight: 4.7 oz. (133.7 grams)
This cap should be left on during
installation to help protect the EC-20A.
The plastic cap must be removed
before placing the sprinkler system in
service.
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.
Model: EC-20A
Style: Pendent (adjustable)
Orifice Size: 1/2" (15 mm)
K Factor: 5.6 (80.8) Nominal
Thread Size: 1/2" (15mm) N.P.T.
Temperature Rating:
Residential: 160°F/71°C
Extended Coverage: 145°F/63°C
160°F/71°C
Quick Response Extended
Coverage: 145°F/63°C
Approvals: U.L., U.L.C., M.E.A.
(Cal. No. 375-75-SA)
Maximum Working Pressure: 175 psi
(12.1 bar)
Manufactured by: Central Sprinkler Company
451 North Cannon Avenue, Lansdale, Pennsylvania 19446
EC-20A 1-98
OmegaEC-20A
No. 4-7.0
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Figure 1
Omega EC-20A
Omega Adjustable Sprinkler Wrench
(Part #15674100)
2 7/8"(73.0 mm) Dia. Max. (escutcheon)
2"(50.8 mm) Dia. Max.
1 3/4"(44.5 mm) Dia. Min.
1 1/16" Max.
(27.0 mm)
7/16" Min.
(11.1 mm)
1/8" (3.2 mm) Push-on Ceiling
Escutcheon
Note: Use this flange for
field installation. DO
NOT HOLD by deflector.
Pipe Drop
Reducing Coupling
Dust Cover
Finished Ceiling
Line
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3
(9.5 to 19.0 Nm) of torque; a
tangential force of 14 to 28 lbs.( 62.3
to 124.5 N) delivered through a 6"
(152.4 mm) handle will deliver
adequate torque. Torque levels over
21 ft. lbs.(28.6 Nm) may distort the
orifice seal, resulting in leakage.
Step 5. Leave the protector cap in
place until the installation is finished.
When the system is ready for service,
remove the cap.
Step 6. To install the escutcheon
plate, align it with and press it over
the sprinkler body until the outer edge
of the escutcheon meets the
mounting surface.
Caution: Special care must be taken
when installing with a CPVC piping
system. Sprinklers must be installed
after the CPVC manufacturer’s
recommended setting time for the
primer and cement to ensure that no
primer or cement accumulates within
the sprinkler.
Special care must be taken when
installing with a copper system. The
sprinkler must be installed only after
the inside of the sprinkler drops and
associated fittings have been wire
brushed to remove any flux. Residual
flux can cause corrosion and can
impair proper sprinkler operation.
Technical
Data
Design Requirements — Residential Applications (160 ° F/71 ° C Rating Only)
Maximum Maximum Minimum Design Flow (pressure)
Spacing Between Location From
Sprinklers Any Wall One Sprinkler Two or More Sprinklers
12 ft. (3.7 m) 6 ft. (1.8 m) 19 GPM (11.5 psi) 16 GMP (8.1 psi)
(72.0 L/min 0.8 bar) (60.6 L/min 0.6 bar)
14 ft. (4.3 m) 7 ft. (2.1 m) 25 GPM (19.9 psi) 18 GPM (10.3 psi)
(94.8 L/min 1.4 bar) (68.2 L/min 0.7 bar)
16 ft. (4.9 m) 8 ft. (2.4 m) 30 GPM (28.7 psi) 21 GPM (14.1 psi)
(113.7 L/min 2.0 bar) (79.6 L/min 1.0 bar)
18 ft. (5.5 m) 9 ft. (2.7 m) 32 GPM (32.7 psi) 29 GPM (26.8 psi)
(121.3 L/min 2.3 bar) (109.9 L/min 1.8 bar)
Design Requirements — Quick Response Extended Coverage
Applications (145 ° F/63 ° C or 160 ° F/71 ° C)
Maximum Maximum Minimum Minimum
Spacing Between Location From Design Design
Sprinklers Any Wall Flow Pressure
14 ft. (or less) (4.3 m) 7 ft. (or less) (2.1 m) 26 GPM (98.5 L/min) 21.6 psi(1/5 bar)
16 ft. (4.9 m) 8 ft. (2.4 m) 26 GPM (98.5L/min) 21.6 psi (1.5 bar)
18 ft. (5.5 m) 9 ft. (2.7 m) 32GPM(121.3 L/min) 32.7 psi (2.3 bar)
20 ft. (6.1 m) 10 ft. (3.0 m) 40GPM(151.6 L/min) 51.0 (3.5 bar)
Listed for use in Light Hazard applications only.
* 20 foot spacing is not Listed as quick response.
The Model EC-20A Sprinkler must
be installed according to current
NFPA 13, NFPA 13D or NFPA 13R
standards. 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 minimum
flow rate at the sprinkler. Check for
the proper model, style, orifice size,
and temperature rating prior to
installation. Install sprinklers after the
piping is in place to avoid mechanical
damage; replace any damaged units.
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. *Teflon is a trademark of the DuPont Corp.
Care &
Maintenance
Installation Installation Sequence
Step 1. The unit must be installed in
the pendent position.
Step 2. The face of the sprinkler
fitting should be installed a nominal
11/8" (28.6 mm) (plus or minus 7/16"
(11.1 mm) behind the finished ceiling
line. Adjustments may be made via
the push-on escutcheon plate.
Do not use the push-on
escutcheon plate to hold the unit in
position. The sprinkler will only
function properly when the system
piping is anchored to the building
structure. Otherwise, reaction forces
from system initiation could alter the
sprinkler alignment and disrupt the
distribution pattern.
Step 3. Use only a non-hardening
pipe joint compound or Teflon* tape.
Apply only to the male threads.
Step 4. Hand tighten the sprinkler
into the fitting. Leaving the protector
cap in place, use a Central Sprinkler
Omega Model A sprinkler wrench to
tighten the unit in the fitting. A leak
tight joint requires only 7 to 14 ft. lbs.
Sprinklers must be handled carefully.
They must not be transported or stored
where ambient temperature may
exceed 100°F/38°C. 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 manner must
be replaced.
The owner is responsible for the
proper operating 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
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© 1997 Central Sprinkler Company
Printed in U.S.A.
Central Sprinkler Company
451 N. Cannon Avenue, Lansdale, PA 19446
Phone [phone]
FAX [phone]
EC-20A.1
Ordering Information: When
placing an order, indicate the full
product name. Please specify the
quantity, model, style, orifice size,
temperature rating, type of finish,
escutcheon plate finish, and sprinkler
wrench.
For special painted escutcheon
finishes, paint must be provided in a
quick-dry lacquer-base to insure
proper color duplication. Without such
a guide, Central Sprinkler Company
can not be responsible for acceptable
color matching.
Availability & Service: Central
sprinklers, valves, accessories, and
other products are available
throughout the U.S. and Canada, and
internationally, through a network of
Central Sprinkler distribution centers.
You may write directly to Central
Sprinkler Company or call (215) 362-
0700 for the distributor nearest you.
Patents: The Omega Model
EC-20A Automatic Sprinkler is
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 = 1,356 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
maintenance requirements.
Furthermore, the local Authority
Having Jurisdiction may have additional
regulations and requirements for
maintenance, testing, and inspection
that must be obeyed.
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 reassemble or
otherwise reuse a sprinkler that has
operated. Replace any sprinkler
exhibiting corrosion or damage; always
use new sprinklers of the same style,
orifice 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
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
To remove the system from service
mode, first refer to the system operating
guide and valve instruction. 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.
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
Jurisdiction will detail minimum
replacement requirements and
regulations.
Guarantee: Central Sprinkler
Company will repair and/or replace any
products 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.
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