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www.tyco-fire.com
Model TY720
16.8 K-factor Pendent Sprinkler
Electronic Control
Page 1 of 2
AUGUST 2018
TFP325
IMPORTANT
Refer to Technical Data Sheet
TFP2300 for warnings pertaining to
regulatory and health information.
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.
Worldwide
Contacts
www.tyco-fire.com
General
Description
The TYCO Model TY720 Pendent
Sprinkler is an electronically controlled
sprinkler having a nominal K-factor of
16.8 (Ref. Figure 1).
The TY720 sprinkler is designed as an
integral component of the Electronic
Sprinkler System for Storage Applica-
tions, a performance-based system
addressing high-challenging high pile
storage fire hazards. For more informa-
tion about the sprinkler system and the
system components, refer to technical
data sheet TFP360.
In place of a traditional heat-sensitive
glass bulb or solder element, the TY720
sprinkler features an electronic linear
actuator and tensile link with hook and
strut arrangement holding a button and
seal against the waterway. A Simplex
Sprinkler Control Heat Sensor paired
with the TY720 sprinkler is connected
directly to the actuator and is in con-
tinuous communication with a Simplex
4100ES Suppression Release Panel.
The panel software algorithm analyzes
information from heat sensors in mul-
tiple locations and selects the optimal
response in a fire event. A voltage is
then sent from an algorithm-selected
heat sensor to its companion TY720
sprinkler, operating the actuator and
breaking the tensile link, allowing
waterflow from the sprinkler.
NOTICE
The TY720 Sprinkler described herein
must be installed and maintained in
compliance with this document, as
well as with the applicable standards
of the National Fire Protection Associa-
tion, in addition to the standards of any
authorities having jurisdiction. Failure
to do so may impair the performance
of these devices.
The owner is responsible for main-
taining their fire protection system
and devices in proper operating con-
dition. Contact the installing contrac-
tor or product manufacturer with any
questions.
Sprinkler
Identification
Number (SIN)
TY720
Technical
Data
Approvals
UL Listed
Maximum Working Pressure
175 psi (12,1 bar)
Pipe Thread Connections
3/4 in. NPT
Discharge Coefficient
K=16.8 GPM/psi
½
(241,9 LPM/bar
½
)
Finish
Natural Brass
Physical Characteristics
Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Brass
Deflector. . . . . . . . . . . . . . . . . . . . . . . . . . Bronze
Compression Screw . . . . . . . . . . Stainless Steel
Hook. . . . . . . . . . . . . . . . . . . . . . . . . . . . .MONEL
Strut . . . . . . . . . . . . . . . . . . . . . . . . . . . . .MONEL
Tensile Link . . . . . . . . . . . . . . . . . . . . . . . Copper
Button. . . . . . . . . . . . . . . . . . . . . . . . . . . . . Brass
Sealing Assembly . Beryllium Nickel w/TEFLON
Ejection Spring. . . . . . . . . . . . . . . . . . . INCONEL
Electrical Actuator . . . . . . . . . . . . . . . . . . . Brass
Electrical Actuator Housing. . . . . ABS/PC Resin
Temperature Rating
Temperature rating is determined by
the panel and heat sensor paired with
the TY720 sprinkler.
For more information, refer to the Elec-
tronic Sprinkler System for Storage
Applications data sheet (document
number TFP360).
Installation
Install the Model TY720 Pendent Sprin-
kler in accordance with this section.
General Instructions
Avoid damage to the actuator and
tensile link during installation. Grasp
the sprinkler only by the protec-
tor and frame wrench flats when
hand-tightening.
A leak-tight 3/4 in. NPT sprinkler joint
should be obtained by applying pipe-
thread sealant to the sprinkler threads
and wrench-tightening using only the
W-Type 21 Sprinkler Wrench (Ref.
Figure 2).
Sprinkler Installation
Install the Model TY720 Pendent Sprin-
kler only in the pendent position in
accordance with the following:
Step 1.
Apply pipe-thread sealant to
sprinkler threads.
Step 2.
Hand-tighten sprinkler into
sprinkler fitting. Do not apply force to
the actuator and tensile link, handle
only by the protector and frame wrench
flats.
Step 3.
Apply W-Type 21 Sprinkler
Wrench to sprinkler by fully seating
wrench recess on sprinkler wrench flats
(Ref. Figure 1).
Step 4.
Wrench-tighten sprinkler to
obtain leak-tight joint either 1 to 1-1/2
turns beyond hand-tightened or by
applying a minimum-to-maximum
torque of 10 to 20 lb-ft (13,4 to 26,8
N
∙
m).
