Item 5.
The alarm line piping must be
positioned such that it can be drained
back to the waterflow detection valve
trim.
Item 6.
The Clean-Out Sump Plug is to
be located vertically below the Inlet to
the Water Motor.
Item 7.
Piping from the Water Motor
Drain must be a minimum of 1 in.
(DN25) in size throughout and directed
to an open drain in order to ensure
proper drainage for obtaining the
maximum sound pressure level.
Note: The Water Motor Alarm Drain
may be connected to the main drain
of a waterflow detection valve if a non-
spring loaded swing-type check valve
is installed in a horizontal portion of the
water motor alarm drain piping (before
its connection to the main drain).
Item 8.
In order to minimize any wall
staining that can be created by drain
water, it is recommended that the drain
piping from the Water Motor be galva-
nized steel, brass, or other suitable cor-
rosion-resistant material.
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.
Technical
Data
Approvals
UL and ULC Listed
FM, LPCB and VdS Approved
Gong Finish
Red or Aluminum
Working Water Pressure Range
7 to 300 psi (0,5 to 20,7 bar)
Nozzle K-factor
0.7 gpm/psi
½
(10,1 Lpm/bar
½
)
Y-Strainer
3/4 in., cast iron, 20 mesh screen
Trim Components
Galvanized steel nipples and cast iron
fittings
Design
Data
The TYCO Model WMA-1 Water Motor
Alarm must be used in accordance with
the following design criteria:
Item 1.
The Y-Strainer is to be located
at the alarm outlet of the waterflow
detection valve trim.
Item 2.
The Water Motor Alarm
must only be mounted to a rigid
wall surface that will not permit the
Striker /Gong Mount to loosen and fall
out of alignment.
Item 3.
In order to obtain the highest
possible sound level, the Water Motor
Alarm should be located as close as
possible to the waterflow detecting
valve. For guidance, refer to NFPA 13.
Item 4.
The alarm line piping from the
alarm outlet of the waterflow detection
valve trim to the Water Motor Alarm
must be 3/4 in. (DN20) in size through-
out and it must be galvanized steel,
brass, or other suitable corrosion-resis-
tant material.
General
Description
The TYCO Model WMA-1 Water Motor
Alarm is a hydraulically operated
outdoor alarm designed for use with
fire protection system waterflow detec-
tion valves. It is lightweight yet rugged,
and it can be used in conjunction with
alarm check, dry pipe, deluge, and pre-
action valves to sound a local alarm.
The Water Motor Alarm is suitable
for mounting to any type of rigid wall
and can accommodate a wall thick-
ness range of 2 in. to 18 in. (50 mm
to 450 mm). It is provided with a listed
and approved TYCO Model WMA-1
Y-Strainer for use in the alarm line.
The Model WMA-1 utilizes a lightweight,
impeller design that can produce a very
high sound pressure level. The Gong,
Gong Mount, and Water Motor Housing
are fabricated from corrosion-resistant
aluminum alloys. The polymer drive
bearings do not require lubrication, and
the Gong is closely fitted to the Gong
Mount to eliminate the need for a sepa-
rate cover.
The Model WMA-1 Water Motor Alarm
is a re-designation for the Central
Model F-2, Gem Model F630, and Star
Model S450.
NOTICE
The TYCO Model WMA-1 Water Motor
Alarm 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
(NFPA), in addition to the standards
of any authorities having jurisdiction.
Failure to do so may impair the perfor-
mance of this device.
Model WMA-1 Water Motor Alarm
Hydraulically Operated
Mechanical Sprinkler Alarm
Page 1 of 4
AUGUST 2018
TFP921
Worldwide
Contacts
www.tyco-fire.com
IMPORTANT
Refer to Technical Data Sheet
TFP2300 for warnings pertaining to
regulatory and health information.
