Tyco Fire Product CENTRAL A User manual

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
contractor or sprinkler manufacturer
should be contacted relative to any
questions.
Sprinkler Identification Number
SIN C1711 - A (K=2.8)
SIN C2711 - A (K=4.2)
SIN C4711 - A (K=8.0)
SIN C4011 - A (K=8.0, 1/2" NPT)
Approvals
UL & ULC Listed. NYC Approved
(Refer to Table 1-3. The approvals
apply only to the service conditions
indicated in the Design Criteria Section)
Maximum Working Pressure
175 psi (12,1 bar)
Pipe Thread Connection
1/2 inch NPT -(K=2.7, 4.2 & 8.0)
3/4 inch NPT - (K=8.0)
Discharge Coefficient
K = 2.8 GPM/psi1/2 (40,3 LPM/bar1/2)
K = 4.2 GPM/psi1/2 (60,5 LPM/bar1/2)
K = 8.0 GPM/psi1/2 (116,8 LPM/bar1/2)
Temperature Ratings
165°F/74°C or 212°F/100°C
Finishes
Sprinkler: White Polyester, Chrome
Plated, or Natural Brass
Recessed Escutcheon: White Coated,
Chrome Plated, or Brass Plated
Physical Characteristics
The Model A Recessed 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. The support cup is steel.
Tyco Fire Products --- www.centralsprinkler.com
451 North Cannon Avenue, Lansdale, Pennsylvania 19446 --- USA
Customer Service/Sales: Tel: [phone] / Fax: [phone]
Technical Services: Tel: [phone] / Fax: [phone]
Model A Recessed
No. 1-2.0
2.8, 4.2 & 8.0 K-factor
Standard Response
Standard Coverage
Recessed Pendent Fusible Solder Type Sprinkler
General
Description
The Central Model A Standard Re-
sponse Recessed Pendent Sprinklers
are automatic sprinklers of the fusible
solder type. They are standard response
- standard orifice spray sprinklers
intended for use in fire sprinkler
systems designed in accordance with
the standard installation rules recog-
nized by the applicable Listing or
Approval agency (e.g., UL Listing is
based on NFPA 13 requirements).
The Central Model A Recessed
Pendent Sprinklers incorporate a
center strut mechanism with a special
two-piece recessed escutcheon
assembly permitting 1/2" of field-
adjustment. Unlike most other
recessed sprinklers, the upper
escutcheon support piece is factory
installed on the base of the sprinkler
frame, assuring a Listed installation.
The ceiling escutcheon plate is easily
installed after the sprinkler is in place
either by the standard “push-on”
escutcheon or the special “thread-on”
escutcheon. This feature allows
removal of ceiling panels for easy
access to ceiling equipment without
taking the system out of service to
remove the sprinkler.
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.
Technical
Data
CENTRAL A 2-01
Standard Spray
Recessed
Pendent
Sprinklers
OBSOLETE

MODEL A/H
RECESSED
ESCUTCHEON
DEFLECTOR
SPRINKLER
FRAME
EJECTOR
SPRING
ACTUATING
ROD
CAP SEAL DISK
SUPPORT
CUP
1"
(25,4 mm)
3/8"(9,5 mm)
15/16"±
1/4"
(23,8 mm±6,4 mm)
2-3/4"(69,9 mm) Max.
2-1/2" (63,5 mm)Min.
1"±1/4"
(25,4mm ±6,4mm)
3-1/4" (82,6 mm)
WRENCH
FLAT
FACE OF SPRINKLER
FITTING
FINISHED
CEILING
ESCUTCHEON
PINTLE
1"
(25,4 mm)
3/8"(9,5 mm)
15/16"±
1/4"
(23,8 mm±6,4 mm)
2-3/4"(69,9 mm) Max.
2-1/2" (63,5 mm)Min.
1"±1/4"
(25,4mm ±6,4mm)
3-1/4" (82,6 mm)
WRENCH
FLAT
FACE OF SPRINKLER
FITTING
FINISHED
CEILING
ESCUTCHEON
PINTLE
Figure 2 - Model A Recessed Sprinkler
with Threaded Escutcheon
Figure 1 - Model A Recessed Sprinkler
with Push-on Escutcheon
Figure 3 - Cross Section
Model A Recessed Sprinkler Figure 4 - Universal Wrench
(Part #1122 - K=2.8 & 4.2)
(Part #1123 - K=8.0)
The Model A Recessed Pendent
Sprinklers
must be installed in accor-
dance with the following instructions.
NOTES
A leak tight 1/2 inch NPT sprinkler joint
should be obtained with a torque of 7 to
14 ft.lbs. (9,5 to 19,0 Nm). A maximum
of 21 ft.lbs. (28,5 Nm) of torque is to be
used to install 1/2 inch NPT sprinklers.
A leak tight 3/4 inch NPT sprinkler joint
should be obtained with a torque of 10
to 20 ft.lbs. (13,4 to 26,8 Nm). A
maximum of 30 ft.lbs. (40,7 Nm) of
torque is to be used to install 3/4 inch
NPT sprinklers. Higher levels of torque
may distort the sprinkler inlet with
consequent leakage or impairment of
the sprinkler.
Installation
Do not attempt to make up for insuffi-
cient adjustment in the escutcheon plate
by under- or overtightening the sprin-
kler. Readjust the position of the
sprinkler fitting to suit.
Step 1. Pendent sprinklers must be
installed only in the pendent position.
The deflector is to be parallel to the
ceiling, roof, or mounting surface, as
applicable.
Step 2. With pipe thread sealant applied
to the pipe threads, hand tighten the
sprinkler into the sprinkler fitting.
Step 3. Tighten the sprinkler into the
sprinkler fitting using only the Universal
Wrench (Ref. Figure 4). With reference
to Figure 1 or 2, the Universal Wrench
is to be applied to the sprinkler wrench
flats only.
After the ceiling has been installed or
the finish coat has been applied, slide
on the Model A/H Recessed Escutch-
eon over the Model A Recessed
Sprinkler and push-on or thread on the
recessed escutcheon until its flange
comes in contact with the ceiling.
Installation of the Model A/H Reccesed
Escutcheon can be accomplished by
hand or by using the Recessed
Escutcheon Tool (Ref. Figure 5) and a
telescoping pole assembly. Every
Model A Recessed Escutcheon has 4
tabs on the interior opening of the
escutheon. By matching these tabs to
the corresponding groove on the
Recessed Escutcheon Tool and with
the telescoping pole attached, the
recessed escutcheon can be installed
without the aid of a ladder. Care should
be exercised to assure that the Actuator
Rod and Ejector Springs of the sprinkler
are not dammaged during the installa-
tion of the recessed escutcheon.
Figure 5 - Recessed
Escutcheon Tool
(Part #10654000)
OBSOLETE

Table 1 - Laboratory Listings and Approvals (2.8 K-factor Sprinklers)
Notes:
1. Listed by Underwriters Laboratories, Inc.
2. Listed by Underwriters' Laboratories of Canada.
3. Approved by the City of New York under BSA 375-75-SA
Table 2 - Laboratory Listings and Approvals (4.2 K-factor Sprinklers)
Design
Criteria
The Model A Recessed Pendent Sprinklers are UL, ULC Listed and NYC Approved for use in accordance with current NFPA
standards. The Recessed Pendent Sprinklers are only listed with the Series A/H Recessed Escutcheon Assemblies.
The Model A Recessed Pendent Sprinklers are availabe with a two types of support cups, one that accepts a push-on
escutcheon and one that accepts a threaded escutcheons. The recessed escutcheons are manufactured out of a metal or
plastic material that has been specifficaly tested and listed for use with the Model A Recessed Pendent Sprinklers. The
plastic recessed escutcheon is only listed for use with the push-on support cup assembly.
Do not install the Model A Recessed Pendent Sprinklers in ceilings which have positive pressure in the space above.
Table 3 - Laboratory Listings and Approvals
(8.0 K-factor Sprinklers with 1/2" or 3/4" NPT)
SPRINKLER FINISH
Temperature Frame Natural Chrome Polyester
Rating Color Code Brass Plated Coated
165°F/74°C Unpainted
212°F/100°C White
1,2,3 1,2,3 1
1,2,3 1,2,3 1
SPRINKLER FINISH
Temperature Frame Natural Chrome Polyester
Rating Color Code Brass Plated Coated
165°F/74°C Unpainted
212°F/100°C White
SPRINKLER FINISH
Temperature Frame Natural Chrome Polyester
Rating Color Code Brass Plated Coated
165°F/74°C Unpainted
212°F/100°C White
1,2,3 1,2,3 1
1,2,3 1,2,3 1
1,2,3 1,2,3 1
1,2,3 1,2,3 1
OBSOLETE

Printed in U.S.A. 2-01
Flow Control
Tyco Fire
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Products
Ordering Information: When placing
an order, indicate the full product
name. Please specify the quantity,
model, style, orifice size, temperature
rating, type of finish or coating, and
sprinkler wrench. Refer to price list for
complete listing of Part Numbers.
Teflon is a trademark of the DuPont Corp.
Ordering
Information
The Model A Recessed Pendent
sprinklers must be maintained and
serviced in accordance with the
following instructions.
NOTES
Absence of an escutcheon which is
used to cover a clearance hole, may
delay the time to operation in a fire
situation.
Before closing a fire protection system
main control valve for maintenance
work on the fire protection system it
controls, permission to shut down the
affected fire protection systems must
be obtained from the proper authori-
ties. All personnel who may be
affected by this action must be
notified.
Sprinklers which are found to be
leaking or exhibiting visible signs of
corrosion must be replaced.
Automatic sprinklers must never be
shipped or stored where their tem-
peratures will exceed 100°F/38°C and
they must never be painted, plated,
coated or otherwise altered after
leaving the factory. Modified sprin-
klers must be replaced. Sprinklers
that have been exposed to corrosive
products of combustion, but have not
operated, should be replaced if they
cannot be completely cleaned by
wiping the sprinkler with a cloth or by
brushing it with a soft bristle brush.
Care must be exercised to avoid
damage - before, during, and after
installation. Sprinklers damaged by
dropping, striking, wrench twist/
slippage, or the like, must be re-
placed.
The owner is responsible for the
inspection, testing, and maintenance
of their fire protection system and
devices in compliance with this
document, as well as with the
applicable standards of the National
Fire Protection Association (e.g.,
NFPA 25), in addition to the standards
of any other authorities having
jurisdiction. The installing contractor
or sprinkler manufacturer should be
contacted relative to any questions.
It is recommended that automatic
sprinkler systems be inspected,
tested, and maintained by a qualified
Inspection Service.
Care &
Maintenance Products manufactured by Tyco Fire
Products are warranted solely to the
original Buyer for ten (10) years
against defects in material and
workmanship when paid for and
properly installed and maintained
under normal use and service. This
warranty will expire ten (10) years
from date of shipment by Tyco Fire
Products. No warranty is given for
products or components manufac-
tured by companies not affiliated by
ownership with Tyco Fire Products or
for products and components which
have been subject to misuse, im-
proper installation, corrosion, or which
have not been installed, maintained,
modified or repaired in accordance
with applicable Standards of the
National Fire Protection Association,
and/or the standards of any other
Authorities Having Jurisdiction.
Materials found by Tyco Fire Products
to be defective shall be either repaired
or replaced, at Tyco Fire Products'
sole option. Tyco Fire Products
neither assumes, nor authorizes any
person to assume for it, any other
obligation in connection with the sale
of products or parts of products. Tyco
Fire Products shall not be responsible
for sprinkler system design errors or
inaccurate or incomplete information
supplied by Buyer or Buyer's repre-
sentatives.
IN NO EVENT SHALL TYCO FIRE
PRODUCTS BE LIABLE, IN CON-
TRACT, TORT, STRICT LIABILITY
OR UNDER ANY OTHER LEGAL
THEORY, FOR INCIDENTAL,
INDIRECT, SPECIAL OR CONSE-
QUENTIAL DAMAGES, INCLUDING
BUT NOT LIMITED TO LABOR
CHARGES, REGARDLESS OF
WHETHER TYCO FIRE PRODUCTS
WAS INFORMED ABOUT THE
POSSIBILITY OF SUCH DAMAGES,
AND IN NO EVENT SHALL TYCO
FIRE PRODUCTS' LIABILITY
EXCEED AN AMOUNT EQUAL TO
THE SALES PRICE.
THE FOREGOING WARRANTY IS
MADE IN LIEU OF ANY AND ALL
OTHER WARRANTIES EXPRESS
OR IMPLIED, INCLUDING WARRAN-
TIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR
PURPOSE.
Limited
Warranty
OBSOLETE