CENTRAL Omega C-1A User manual

Product
Description
*For specific listing requirements, see the appropriate
information contained in this brochure.
The Omega Model C-1A Quick
Response Commercial Pendent
Automatic 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 than a standard
sprinkler and features a spray pattern
that has been shown to be effective in
the control or extinguishment of fire.
The Model C-1A incorporates a
significant cost saving feature; a
special escutcheon assembly that pro-
vides for 7/8" (22.2 mm) of field adjust-
ment resulting in an easily accom-
plished, tight fit against the ceiling.
The Model C-1A carries a Listing*
by Underwriters Laboratories for use
as a Quick Response Commercial
Sprinkler that qualifies for installation
in accordance with current NFPA 13
and NFPA 13R Standards.
The Model C-1A is available in three
standard finishes. Its mating escutch-
eon plate is available in three stan-
dard finishes with additional special
finishes available.
Operation: A fusible alloy pellet is
compressed by a bearing disc into a
copper housing by a ball plunger.
Heat is absorbed by the heat collect-
ing fins and conducted to the alloy
pellet. At the rated temperature, the
Manufactured by: Central Sprinkler Company
451 North Cannon Avenue, Lansdale, Pennsylvania 19446
1-98C-1A
Technical
Data
3/8" &1/2"
(9.5 mm) & (12.7 mm)
Orifice
Adjustable
Pendent
Automatic
Sprinkler
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 deflec-
tor assembly open. Water is then
discharged in a designed flow pattern.
Omega C-1A
Quick Response Commercial
Automatic Sprinkler
Model: C-1A
Style: Pendent (adjustable)
Escutcheon:
Wrench: Omega Adjustable Model A
Sprinkler Wrench
Orifice Size: 3/8" (9.5 mm) or 1/2" (12.7 mm)
K-Factor: 3/8" = 2.7 (38.6 Metric)
1/2"
= 5.6 (80.1 Metric)
Thread Size: 1/2" (15 mm) N.P.T.
Temperature Rating: 145°F/63°C
160°F/71°C
200°F/93°C
Approvals: 3/8" (10 mm) - U.L. only
1/2"
(15 mm) - U.L., ULC,
MEA (46-92-E Vol. III)
Maximum Working Pressure:
175 psi / 12.1 bar
Factory Hydro Test: 100% at
500 psi / 34.5 bar
Standard Finishes:
Sprinkler: chrome plated, brass
plated, white painted
Escutcheon: chrome plated, brass
plated, white painted
AdjustableRangeBelowCeiling:
3/8"
(9.5 mm) to 11/4" (31.8 mm)
Highest Allowable Ambient Temp:.
100°F/38°C for 145°F rating
100°F/38°C for 160°F rating
150°F/66°C for 200°F rating
Length: 27/16" (61.9 mm)
Width: 11/4" (31.8 mm)
Weight: 3.2 oz. (91 grams)
No.1-10.0
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2
2 7/8" (73 mm) Dia.
2" (50.8 mm)
Dia. Max.
1 3/4" (44.5 mm)
Dia. Min.
1
/8"
(3.2 mm)
Push-on Ceiling
Escutcheon
Note: Use this flange for
field installation. DO
NOT HOLD by deflector.
Pipe Drop
1" x 1/2" (25 mm x 15 mm)
NPT Reducing Coupling
Dust Cover
2 5/8"
(66.7 mm)
Max.
1 3/4"
(44.5 mm)
Min.
2 3/8"
(60.3 mm)
Flush
(take-out)
1 1/4" (31.8 mm) Max.
3/8" (9.5 mm) Min.
5/8" (15.9 mm) Flush
Finished Ceiling
Line
1 9/16"
(39.7 mm)
Max.
11/16"
(17.5 mm)
Min.
1 5/16"
(33.3 mm)
Flush
Installation Diagram
Omega C-1A Commercial Quick Response
Omega Adjustable Model A
Sprinkler Wrench
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3
*Teflon is a trademark of the DuPont Corp.
Design
Data
Installation
All Central Model C-1A Sprinklers
must be installed according to current
NFPA 13 Standards and these
installation instructions. Deviations
from these requirements and stan-
dards 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 required
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. Refer to the
Installation section of Central
Bulletins on the Model A-1 Dry
Pendent Sprinklers for use in dry pipe
sprinkler installations.
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.
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" ±7⁄16" (28.6 mm ±11.1 mm) behind
the ceiling line as shown in the
installationdiagramonpagetwo.
Adjustments may be made via the
push-on escutcheon plate to comp-
ensate for variations in the fitting.
Do not use the push-on escutcheon
plate to hold the unit in position. The
sprinkler will function properly only
when the system piping is anchored to
the building structure. Otherwise
reaction forces from system initiation
could alter the sprinkler alignment and
disrupt the 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 into the fitting. A leak-tight
joint requires only 7 to 14 ft.-lbs. (9.5 to
19.0 Nm) of torque; a tangential force of
14 to 28 lbs. (16.3 to 124.5 Newtons)
delivered through a 6" (150 mm) handle
willdeliveradequatetorque. 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 system.
Sprinklers must be installed after the
CPVC 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 drop 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.
Care &
Maintenance
Sprinklers must be handled care-
fully. They must not be transported
or stored where ambient temperature
mayexceed100oF/38oCfor145°F/
63oCor160oF/71oCsprinklers. For
200oF/93oCratedsprinklers,the
ambient temperature should not
exceed 150oF/66oC. For best results,
store them in a dry, cool 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 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 maintenance requirements.
Furthermore, the local Authority
Having Jurisdiction may have addi-
tional regulations and requirements
for maintenance, testing, and inspec-
tion 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 re-assemble or
otherwise reuse a sprinkler that has
operated. Replace any sprinkler
exhibiting corrosion or damage;
Design Requirements — Quick Response Commercial Applications
In Quick Response Commercial applications, the Omega C-1A sprinklers are
intended for standard area coverages and standard flow and pressure require-
ments as specified in current NFPA 13 and NFPA 13R Standards.
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©1998 Central Sprinkler Company
Printed in U.S.A. C-1A.1
Ordering
Information
OrderingInformation: Whenplacing
an order, indicate the full product
name. Please specify the quantity,
model, style, orifice size, temperature
rating, type of finish or coating, and
sprinklerwrench.
AvailabilityandService: Central
sprinklers, valves, accessories, and
otherproductsareavailablethrough-
outthe U.S.andCanada,and interna-
tionally,through anetworkof Central
Sprinklerdistributioncenters. You
may write directly to Central Sprinkler
Company,orcall(215)362-0700for
thedistributor nearestyou.
ConversionTable:
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
=0.0689bar
= 0.0703 kg/cm2
1 U.S. gallon = 3.785 dm3
= 3.785 liters
Conversionsareapproximate.
Central Sprinkler Company
451 North Cannon Avenue, Lansdale, PA 19446
Phone [phone]
FAX [phone]
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
pattern. Such obstructions must be
removed. In the event that construction
has altered the original configuration,
additional sprinklers should be installed
to maintain the protection level.
Do not attempt to replace sprinklers
without first removing the fire protec-
tion system from service. Be certain
to secure permission from all Authori-
ties Having Jurisdiction , and notify all
personnel who may be affected during
system shutdown. A fire watch during
maintenance periods is a recom-
mended precaution.
To remove the system from service
mode, first refer to the system operat-
ing guide and valve instructions.
Drain water and relieve the pressure
in the system piping. Remove the
existing unit and install the replace-
ment, 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 an 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 Juris-
diction will detail minimum replacement
requirements and regulations.
Guarantee: Central Sprinkler Com-
pany will repair and/or replace any pro-
ducts found to be defective in material
or workmanship within a period of one
year from the date of shipment. Please
refer to the current Price List for further
details of the warranty.
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