WFDTH
Waterflow Detector
The System Sensor WFDTH Retard T-Tap Waterflow
Detector is designed for primary signaling in
residential systems and fits within 2×4 stud wall
construction.
Features
• Residential sprinkler systems
• Sealed retard mechanism
• Visual switch activation
• Rugged, dual SPDT switches enclosed in a durable terminal block
• Easy to install and maintain design
• Vertical or horizontal mount
• Field replaceable retard mechanism and switch assembly
• Twelve different flexible paddles
• Durable, tamper resistant enclosure
• Two conduit openings
• Handy depth gauge
• Accommodates up to 12 AWG wire
• 100% synchronization fires alarm panel and local bell
simultaneously
The WFDTH fits any tee that has a 1˝ NPT branch, including: 1˝, 1¼˝,
1�½˝, and 2˝ NPT threaded ferrous and brass tees; 1˝, 1¼˝, 1�½˝ and 2˝
copper sweat tees; Central, Spears
®
, and Victaulic
®
brand 1˝ CPVC tees;
and 1�½˝ polybutylene tees.
Design.
The design of the WFDTH makes it easy to install and
simple to maintain. It can be mounted in the vertical or horizontal
position. Two conduit openings permit easy attachment to the local
alarm system. The retard mechanism and switch assembly are field-
replaceable.
Features.
Twelve different flexible paddles fit 1˝, 1¼˝, 1�½˝, and 2˝
tees. Sizes are marked clearly on the paddle for ease of installation.
Plastic paddles slip over the actuating lever and are securely
fastened with one screw. The handy depth gauge insures the proper
installation depth and clearance of the detector to the tee.
Construction.
The WFDTH includes a durable and tamper resistant
enclosure. Its sealed retard assures that the delay mechanism is
not contaminated by dust and dirt when the cover is removed. The
long lasting cover completely encloses the electrical components
to further keep out dust and dirt. Improved self-guiding security
screws and removal tools make detectors resistant to tampering and
simplify field maintenance.
Agency Listings
S739
CS169
7770-1653:114
167-93-E
SYSTEMSENSOR [ SYSTEMSENSOR ADVANCED IDEAS. ]
