contractor or sprinkler manufacturer
should be contacted relative to any
questions.
Sprinkler Identification Number
SIN C1211 - A Pend (K=2.8)
SIN C1111 - A UP (K=2.8)
SIN C2211 - A Pend (K=4.2)
SIN C2111 - A UP (K=4.2)
SIN C3211 - A Pend (K=5.6)*
SIN C3111 - A UP (K=5.6)*
SIN C4211 - A Pend (K=8.0)*
SIN C4111 - A UP (K=8.0)*
SIN C4911 - A Pend (K=8.0, 1/2" NPT)*
SIN C4811 - A UP (K=8.0, 1/2" NPT)*
Approvals
UL & ULC Listed. FM, LPC, VDS,
NYC Approved
(Refer to Table 1 - 4. The approvals
apply only to the service conditions
indicated in the Design Criteria Section)
Maximum Working Pressure
175 psi (12,1 bar)
250 psi (17,3 bar) UL & ULC (K=5.6)
Pipe Thread Connection
1/2 inch NPT -(K=2.7, 4.2, 5.6 & 8.0)
3/4 inch NPT - (K=8.0)
Discharge Coefficient
K = 2.8 GPM/psi
1/2
(40,3 LPM/bar
1/2
)
K = 4.2 GPM/psi
1/2
(60,5 LPM/bar
1/2
)
K = 5.6 GPM/psi
1/2
(80,6 LPM/bar
1/2
)
K = 8.0 GPM/psi
1/2
(116,8 LPM/bar
1/2
)
Temperature Ratings
165
°
F/74
°
C, 212
°
F/100
°
C, 286
°
F/141
°
C
Finishes
Sprinkler: White Polyester, Chrome
Plated, or Natural Brass
Corrosion Resistant Coatings
Sprinkler: Wax, Lead & Wax-over-Lead
* Head Guard & Water Shield:
G-2 (Guard) - (K=5.6 & K=8.0) Up & Pend.
WSG-2 (Guard & Shield) - (K=8.0) Up
WS-2 (Shield) - (K=5.6) Pendent
Factory Assembled Model A Pendent and
Model A M/L Shield - (K=5.6 & K=8.0)
(See Data Sheet 3-12.0 for details)
Tyco Fire Products --- www.centralsprinkler.com
451 North Cannon Avenue, Lansdale, Pennsylvania 19446 --- USA
Customer Service/Sales: Tel: (215) 362-0700 / Fax: (215) 362-5385
Technical Services: Tel: (800) 381-9312 / Fax: (800) 791-5500
Model A
No. 1-1.0
2.8, 4.2, 5.6 & 8.0 K-factor
Standard Response
Standard Coverage
Upright & Pendent Pendent Fusible Solder Type Automatic Sprinkler
General
Description
The Central Model A Upright & Pendent
Automatic Sprinklers are standard
response - standard coverage, fusible
solder type spray sprinklers designed for
use in light, ordinary, or extra hazard,
commercial occupancies such as banks,
hotels, shopping malls, factories, refiner-
ies, chemical plants, etc.
These sprinklers are available with wax
and lead coatings that may be utilized to
extend the life of copper alloy sprinklers
beyond that which would otherwise be
obtained when exposed to corrosive
atmospheres.
Although wax and lead coated sprinklers
have passed the standard corrosion tests
of the applicable approval agencies, the
testing is not representative of all possible
corrosive atmospheres. Consequently, it is
recommended that the end user be
consulted with respect to the suitability of
these corrosion resistant coatings for any
given corrosive environment. The effects
of ambient temperature, concentration of
chemicals, and gas/chemical velocity,
should be considered, as a minimum,
along with the corrosive nature of the
chemical to which the sprinklers will be
exposed.
Operation: A fusible alloy is sealed into a
bronze actuating rod (center strut) by a
stainless steel ball. When the alloy melts
at its rated temperature, the ball is forced
upward into the center strut, releasing the
two ejectors and operating the sprinkler.
WARNING
The Model A Upright & Pendent Sprin-
klers described herein must be installed
and maintained in compliance with this
document, as well as with the applicable
standards of the National Fire Protection
Association, in addition to the standards of
any other authorities having jurisdiction.
Failure to do so may impair the integrity of
these devices.
The owner is responsible for maintaining
their fire protection system and devices in
proper operating condition. The installing
Technical
Data
CENTRAL
A
2-01
Standard Spray
Upright &
Pendent
Sprinklers
Physical Characteristics
The Model A Upright & Pendent Sprin-
klers utilize a dezincification resistant
(DZR) bronze frame and a brass deflector.
The waterway is sealed with copper seal
disk, and the fusible assembly is con-
structed of bronze and stainless steel
components.
OBSOLETE
