Quick Response
Concealed Pendent Sprinklers
Stealth™ S110, K=5.6, 1/2" NPT
GENERAL DESCRIPTION
The Star Stealth S110, 5.6 K-Factor, Quick Response,
Concealed Pendent Sprinklers are decorative sprinklers
featuring a flat cover plate designed to conceal the sprin-
kler. It is the best choice for architecturally sensitive ar-
eas such as hotel lobbies, office buildings, churches, and
restaurants.
Each unit includes a Cover Plate Assembly which con-
ceals the sprinkler operating components above the ceil-
ing. Each sprinkler is shipped with a Protective Cap
which permits temporary fire protection while the ceiling
installation is being completed.
The separable two-piece design of the Cover Plate and
Mounting Cup Assemblies allows installation of the sprin-
klers and pressure testing of the fire protection system
prior to installation of a suspended ceiling or application
of the finish coating to a fixed ceiling. They also permit re-
moval of suspended ceiling panels for access to building
service equipment without having to first shut down the
fire protection system and remove sprinklers.
Also, the separable two-piece design of the the Sprinkler
provides for 1/2 inch (12,7 mm) of vertical adjustment, to
reduce the accuracy to which the length of fixed pipe
drops to the sprinklers must be cut.
WARNINGS
The Stealth S110 Quick Response Concealed Pendent
Sprinklers described herein must be installed and main-
tained 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 Stealth S110 must not be used in applications where
the air pressure above the ceiling is greater than that be-
low. Downdrafts through the Mounting Cup could delay
sprinkler operation in a fire situation.
The owner is responsible for maintaining their fire protec-
tion system and devices in proper operating condition.
The installing contractor or sprinkler manufacturer should
be contacted relative to any questions.
OPERATION
When exposed to heat from a fire, the Cover Plate, which
is normally soldered to the Enclosure at three points, falls
away to expose the Sprinkler Assembly. At this point the
Deflector supported by the Arms drops down to its opera-
tional position.
The glass bulb contains a fluid which expands when ex-
posed to heat. When the rated temperature is reached,
the fluid expands sufficiently to shatter the glass bulb,
which then allows the sprinkler to activate and water to
flow.
Table A provides the combinations of sprinkler (glass
bulb) temperature ratings and cover plate (solder) tem-
perature ratings, as well as maximum permitted ceiling
temperatures.
TECHNICAL DATA
Approvals
UL and C-UL Listed. FM Approved and LPC Approved.
NYC Accepted under MEA 212-98-E.
(The approvals apply only to the service conditions
indicated in the Design Criteria section.)
Maximum Working Pressure
175 psi (12,1 bar)
Discharge Coefficient
K = 5.6 GPM/psi
1/2
(80,6 LPM/bar
1/2
)
Temperature Ratings
135°F/57°C, 155°F/68°C, 175°F/79°C, or 200°F/93°C
Adjustment
1/2 inch (12,7 mm)
Finishes
Cover Plate: Brushed Chrome or White Painted
(Custom paint matches and colors other than white are
available on request.)
Physical Characteristics (Ref. Figure 1)
The Stealth S110 utilizes a 3 mm bulb and a bronze
frame. The two-piece button assembly is brass and cop-
per, and the gasketed spring plate consists of a beryllium
nickel disc spring that is sealed on both its inside and out-
side edges with a Teflon
gasket. The compression screw,
SIN S3200
Customer Service/Sales: Tel: (800) 558-5236 • Fax: (414) 570-5010
Technical Services: Tel: (800) 381-9312 • Fax: (800) 791-5500
3-01
1-1.1.13
TYCO FIRE PRODUCTS
OBSOLETE
