General
Description
The Central Model S176, 5.6 K-Fac-
tor (1/2 inch orifice), Standard or
Quick Response, Standard Cover-
age, Dry Horizontal Sidewall Sprin-
klers are decorative glass bulb auto-
matic sprinklers designed for use in
applications where the sprinklers
and/or a portion of the connecting
piping may be exposed to freezing
temperatures (e.g., horizontal piping
extensions from a wet pipe sprinkler
system through a wall to protect a
freezer or unheated area of a build-
ing).
The Model S176 Dry Horizontal Side-
wall Sprinklers are available in
standard response (5 mm bulb) or
quick response (3 mm bulb) and in a
wide range of operating tempera-
tures and order lengths. The Model
S176 Sprinklers are intended for use
in fire sprinkler systems designed in
accordance with the standard instal-
lation rules recognized by the appli-
cable Listing or Approval agency
(e.g., UL Listing is based on NFPA
13 requirements).
They are designed for installation
along a wall and just beneath a
smooth ceiling. Installed with their
centerline of waterway horizontal,
these sprinklers produce a quarter-
spherical water distribution pattern
that is predominately directed down-
ward and outward from the sprinkler
with a portion of the spray being di-
rected towards the backwall.
The Standard Escutcheon for the
Model S176 is a separable two-piece
design which allow installation of the
sprinklers and pressure testing of
the fire protection system prior to
wall construction and/or application
of a finish coat to the wall. It also per-
mits refinishing of a wall surface with-
out having to first shut down the fire
protection system and remove the
sprinklers.
Operation:
When the Model S176 is
in service, water is prevented from
entering the assembly by the Plug &
O-ring (Ref. Figure 2) in the Inlet of
the Sprinkler. The glass Bulb con-
tains a fluid which expands when ex-
posed to heat. When the rated tem-
perature is reached, the fluid
expands sufficiently to shatter the
glass Bulb, and the Bulb Seat is re-
leased. The compressed Spring is
then able to expand and push the
Water Tube as well as the Guide
Tube outward. This action simultane-
ously pulls inward on the Yoke, with-
drawing the Plug & O-ring from the
Inlet, which then allows the sprinkler
to activate and flow water.
WARNINGS
The Model S176 Dry Horizontal Side-
wall Sprinklers described herein
must be installed and maintained in
compliance with this document, as
well as with the applicable standards
of the National Fire Protection Asso-
ciation, in addition to the standards
of any other authorities having juris-
diction. Failure to do so may impair
the integrity of these devices.
The owner is responsible for main-
taining their fire protection system
and devices in proper operating con-
dition. The installing contractor or
sprinkler manufacturer should be
contacted relative to any questions.
The Model S176 Dry Horizontal Side-
wall Sprinklers must only be in-
stalled in fittings that meet the re-
quirements of the Design Criteria
section.
Technical
Data
Sprinkler Identification Number
SIN C3355 (Standard Response)
SIN C3335 (Quick Response)
Approvals
UL and ULC Listed. FM Approved.
(Refer to Table A)
Maximum Working Pressure
175 psi (12,1 bar)
Pipe Thread Connection
1 inch NPT or ISO 7-R1
Discharge Coefficient
K = 5.6 GPM/psi
1/2
(80,6 LPM/bar
1/2
)
Temperature Ratings
Refer to Table A
Finishes
Sprinkler: Natural Brass, Chrome
Plated, White Polyester
Escutcheon: White Coated or
Chrome Plated
(Colors other than white are avail-
able on request.)
Physical Characteristics
The Plug and Inlet are brass, and
the O-ring is silicone rubber. The
Casing is galvanized carbon steel.
Standard
Escutcheon
No. 5-6.5
Model S176
Standard or Quick Response
Standard Coverage
Dry Hor. Sidewall Sprinklers
Tyco Fire Products — www.centralsprinkler.com
451 North Cannon Avenue, Lansdale, Pennsylvania 19446
Customer Services/Sales: Tel: (215) 362-0700 / Fax: (215) 362-5385
Technical Services: Tel. (800) 381-9312 / Fax: (800) 791-5500
CENTRAL
S176
3-01
OBSOLETE
