Tyco TN-25 Quick Start Manual

Model TN-25
25.2 (K360) K-factor
Horizontal Spray Nozzle, Open
General
Description
The TYCO Model TN-25 Horizontal
Spray Nozzle having a 25.2 (K360)
K-factor is a specialized open nozzle
for use in tunnel fire protection deluge
systems, providing an improved alter-
native to traditional designs. With its
ability to provide extended coverage,
the Model TN-25 Nozzle allows for a
single pipe to run the length of a tunnel,
compared to traditional designs that
use multiple pipes in order to provide
sufficient coverage. The Model TN-25
Nozzle is an open nozzle designed to
be integrated into a deluge fire protec-
tion system.
The Model TN-25 Nozzle provides
protection of coverage areas up to
16 ft.-4 inches x 24 ft.-7 inches
(5,0 m x 7,5 m) as compared to stan-
dard coverage sprinklers often used in
tunnel fire protection system designs
having a maximum coverage area of
10 ft. x 10 ft. (3,0 m x 3,0 m).
NOTICE
The TYCO Model TN-25 Horizontal
Spray Nozzle described herein must
be installed and maintained in compli-
ance with this document and with the
applicable standards recognized by any
authorities having jurisdiction. Failure
to do so may impair the performance
of these devices.
The design of individual fixed water
spray systems for fire protection
can vary considerably, depending
on the characteristics and nature of
the hazard, the basic purpose of the
IMPORTANT
Always refer to Technical Data
Sheet TFP700 for the "INSTALLER
WARNING" that provides cautions
with respect to handling and instal-
lation of sprinkler systems and com-
ponents. Improper handling and
installation can permanently damage
a sprinkler system or its compo-
nents and cause the sprinkler to fail
to operate in a fire situation or cause
it to operate prematurely.
Page 1 of 4
spraying system, the configuration of
the hazard, and wind/draft/ventilation
conditions. Because of these varia-
tions, the design of fixed water spray
systems must only be performed by
experienced designers who thoroughly
understand the limitations as well as
capabilities of such systems.
The Tunnel Operator is responsible for
maintaining their fire protection system
and devices in proper operating con-
dition. Contact the installing contrac-
tor or product manufacturer with any
questions.
Technical
Data
Approvals
UL and C-UL Listed
Minimum Working Pressure
10 psi (0,7 bar)
Maximum Working Pressure
30 psi (2,1 bar)
Minimum Height to Finish Grade
18 ft (5,5 m)
Maximum Height to Finish Grade
40 ft (12,2 m)
Pipe Thread Connections
1 Inch NPT or ISO 7-R 1
Discharge Coefficient
K=25.2 gpm/psi (362,9 lpm/bar
1/2
Finish
Natural Brass
Physical Characteristics
Frame . . . . . . . . . . . . . . . . . . . . . . . . Brass
Deflector Screw . . . . . . . . . Stainless Steel
Deflector. . . . . . . . . . . . . . . . . . . . . . Brass
Deflector Nut . . . . . . . . . . . . . . . . . Bronze
Design
Criteria
The TYCO Model TN-25 K=25.2 Hor-
izontal Spray Nozzle is intended for
integration into a water spray, deluge
fire protection system designed in
accordance with the applicable stan-
dards recognized by any authorities
having jurisdiction.
Nozzle Orientation
The Model TN-25 Nozzle must be
installed in a horizontal orientation.
Refer to Figures 1 and 2.
APRIL 2015
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Contacts
Corrosion Resistance
It is recommended that the Tunnel
Operator be consulted with respect
to the suitability of the materials of
construction and finish for any given
corrosive environment. The effects of
ambient temperature, concentration of
chemicals, and gas/chemical velocity,
should be considered, at a minimum,
along with the corrosive nature to
which the nozzles may be exposed.
The pipe, fittings, hangers, and hanger
components must be suitable for use in
the application environment.
Obstructions
The maximum allowable vertical and
horizontal distance that the bottom of
an obstruction can be away from the
Model TN-25 Nozzle is provided in
Graph A.
)
1/2
Non-continuous suspended obstruc-
tions such as air handlers, lights, and
the like are to meet the "4x rule" of
Figure 6; within 5 feet of the nozzle
deflector in the area below the nozzle,
the obstruction must be located four
(4) times the longest dimension of the
obstruction as defined in Figure 6, to
a maximum of 60 inches. No obstruc-
tions are allowed to be located within
the designated shaded region. Care
must be taken to place large obstruc-
tions running parallel to the nozzle dis-
charge (i.e., signs) in the areas between
the nozzles.
Installation
The TYCO Model TN-25 K=25.2 Hor-
izontal Spray Nozzle, as shown in
Figures 1 and 2, is to be installed in
accordance with this section.
TFP850