CENTRAL Omega C-1A Manual

Omega C-1A
Quick Response Commercial
Automatic Sprinkler
Manufactured by: Central Sprinkler Company
451 North Cannon Avenue, Lansdale, Pennsylvania 19446
Product
Description
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 / " of field adjust-
(22.2 mm)
8
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
*For specific listing requirements, see the appropriate
information contained in this brochure.
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.
Technical
Data
Model: C-1A
Style: Pendent (adjustable)
Escutcheon:
Wrench: Omega Adjustable Model A
Sprinkler Wrench
3
Orifice Size: / " or
(9.5 mm)
8
3
K-Factor: / " = 2.7
(38.6 Metric)
8
1
/ " = 5.6
(80.1 Metric)
2
Thread Size: 1 / " N.P.T.
(15 mm)
2
Temperature Rating: 145°F/63°C
160°F/71°C
200°F/93°C
3
Approvals: / " - U.L. only
(10 mm)
8
1 / " - U.L., ULC,
(15 mm)
2
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
Adjustable Range Below Ceiling:
3 / " to 1 1 / "
(9.5 mm)
8 4
C-1A
3
/ "
8
(9.5 mm) & (12.7 mm)
Orifice
Adjustable
Pendent
Automatic
Sprinkler
Highest Allowable Ambient Temp:.
1
/ " 100°F/38°C for 145°F rating
(12.7 mm)
2
100°F/38°C for 160°F rating
150°F/66°C for 200°F rating
Length: 2 7
Width: 1 1
Weight: 3.2 oz.
(31.8 mm)
1-98
1
/ "
&
2
/ "
(61.9 mm)
16
/ "
(31.8 mm)
4
(91 grams)
No.1-10.0