
TFP325
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NATIONAL FIRE PROTECTION ASSOCIATION and NFPA are registered trademarks of National Fire Protection Association;
MONEL and INCONEL are registered trademarks of Special Metals Corporation;
TEFLON is a trademark of The Chemours Company FC, LLC
1467 Elmwood Avenue, Cranston, RI 02910 | Telephone +1-401-781-8220
© 2022 Johnson Controls. All rights reserved. All specifications and other information shown were current as of document revision date and are subject to change without notice.
wrench twist/slippage, or the like, must
be replaced. Also, replace any sprinkler
that has a damaged actuator, tensile
link or other operative parts. For infor-
mation about replacing a sprinkler, see
Installation section.
The owner is responsible for the
inspection, testing, and mainte-
nance of their re protection system
and devices in compliance with
this document, as well as with the
applicable standards of the National
Fire Protection Association such as
NFPA 25, in addition to the standards
of any authorities having jurisdic-
tion. Contact the installing contrac-
tor or product manufacturer with any
questions.
It is recommended that automatic
sprinkler systems be inspected, tested,
and maintained by a qualied Inspec-
tion Service in accordance with local
requirements and/or national codes.
Limited
Warranty
For warranty terms and conditions, visit
www.tyco-re.com.
Ordering
Procedure
Contact your local distributor for avail-
ability. When placing an order, indicate
the full product name and Part Number
(P/N).
Sprinkler Assemblies
Specify: Model TY720, K=16.8, Elec-
tronic Control, Pendent Sprinkler,
natural brass, P/N 58-461-1-000
Sprinkler Wrench
Specify: W-Type 21 Sprinkler Wrench,
P/N 56-001-0-686
Care and
Maintenance
TY720 Sprinklers must be maintained
and serviced in accordance with this
section.
Submit 10 samples or 1% of the total
number of installed sprinklers, which-
ever is greater, to UL for testing 5 years
after manufacturing, then again at 10
years and followed by annual testing
after the tenth year. Sampling can be
from mock-installations not connected
to the re protection sprinkler system
but are located in the same orienta-
tion and environment as the system
sprinklers.
Before closing a re protection system
main control valve for maintenance
work on the re protection system that
it controls, permission to shut down the
affected re protection system must be
obtained from the proper authorities
and all personnel who may be affected
by this action must be notied.
Sprinklers which are found to be
leaking or exhibiting visible signs of
corrosion must be replaced.
Care must be exercised to avoid
damage to the sprinklers before,
during, and after installation. Sprin-
klers damaged by dropping, striking,
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 shown in
Figure 2.
Sprinkler Installation
Install the Model TY720 Pendent Sprin-
kler only in the pendent position as
follows:
Step 1. Apply pipe-thread sealant to
sprinkler threads.
Step 2. Hold the sprinkler by the frame
and wrench ats, and do not grasp or
apply force to the actuator and tensile
link. Insert and hand-tighten the sprin-
kler into the sprinkler tting.
Step 3. Apply a W-Type 21 Sprinkler
Wrench to the sprinkler by fully seating
the wrench recess on the sprinkler
wrench ats shown in Figure 1.
Step 4. Wrench-tighten the sprinkler
to obtain a leak-tight joint either 1 to
1-1/2 turns beyond hand-tightened, or
by applying a minimum-to-maximum
torque of 10 ft-lb to 20 ft-lb (13,4 N∙m
to 26,8 N∙m).
NOTICE
Higher levels of torque may distort
sprinkler inlet with consequent leakage
or impairment of sprinkler.
Electrical
Actuator
Compression
Screw
Deector
Frame
Tensile Link
Button
Strut
Hook Sealing
Assembly
Ejection
Spring
-
-
-
-
-
-
-
-
-
-
10
3
2
1
5
6
4
9
8
7
1-7/8" (47,6 mm)
2
3
4
6
10
1
8
NOMINAL
WRENCH
MAKE-IN
FLATS
5
7
9
3-9/16"
(90,5 mm)
(12,7 mm)
1/2"
FIGURE 1
MODEL TY720 ELECTRONIC CONTROL,
PENDENT SPRINKLER, 16.8 K-FACTOR
WRENCH
RECESS
"FITTING SIDE"
FITTING
FIGURE 2
W-TYPE 21
SPRINKLER WRENCH