WFDTA

T-Tap Waterflow Detectors System Sensor T-Tap Waterflow Detectors are designed for primary signaling in residential systems and branch line signaling in larger systems. Features • Sealed retard mechanism (Model WFDT) • Visual switch activation (Model WFDT) • Twelve different flexible plastic paddles • Vertical or horizontal mount • Durable tamper resistant enclosure • Dual SPDT switches in durable terminal block • Sizes marked on flexible plastic paddles • 100 percent synchronization activates both alarm panel and local bell • Accommodates up to 12 AWG wire Both the WFDT retard model and the WFDTNR non-retard model fit any tee that has a 1˝ NPT branch, including: 1˝, 1¼˝, 1½˝ and 2˝ NPT threaded ferrous and brass tees; 1˝, 1¼˝, 1½˝ and 2˝ copper sweat tees; Central, Spears®, and Victaulic® brand 1˝ CPVC tees; and 1½˝ polybutylene tees. Design. The design of the WFDT and WFDTNR makes them easy to install and simple to maintain. Either can be mounted in the vertical or horizontal position. Two conduit openings permit easy attachment to the local alarm system. The retard mechanism (Model WFDT only) and switch assemblies are field-replaceable. Features. Twelve different flexible plastic paddles fit 1˝, 1¼˝, 1½˝, and 2˝ tees. Sizes are marked clearly on the paddles 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 WFDT and WFDTNR include a durable tamper resistant enclosure and rugged switch assembly. The long lasting covers completely enclose the electrical components to keep out dust and dirt. Improved self-guiding security screws and removal tools make detectors resistant to tampering and simplify field maintenance. Dual SPDT switches are enclosed in a durable terminal block for added strength. Agency Listings S739 CS169 7770-1209:149 167-93-E T-Tap Waterflow Detector Specifications Architectural/Engineering Specifications Model shall be a WFDT or WFDTNR as manufactured by System Sensor. T-tap waterflow detectors shall be installed on a tee that has a 1˝ NPT branch including: 1˝, 1¼˝, 1½˝ or 2˝ threaded ferrous or brass tee; 1–2˝ copper sweat tees; Central, Spears,® and Victaulic® brand 1˝ CPVC tees; or 1½˝ polybutylene tee as designated on the drawings and/or as specified herein. Detectors shall mount on any clear pipe span of the appropriate size, either a vertical or horizontal run at least 6˝ from any fittings or valves which may change water direction, flow rate, or pipe diameter or no closer than 24˝ from a valve or drain. Detectors shall have a sensitivity in the range of 4 to 10 gallons per minute and a static pressure rating of 250 psi. The retard t-tap detector shall be a sealed mechanical pneumatic unit with visual indication of actuation. The actuation mechanism shall include a polyethylene vane inserted through the tee fitting and connected by a mechanical linkage to the delay mechanism. The non-retard t-tap detector shall respond with no time delay to waterflow in the specified direction and range. Outputs shall consist of dual SPDT switches (Form C contacts). Two conduit entrances (one of which is a knockout type) for standard fittings of commonly used electrical conduit shall be provided on the detectors. A grounding provision is provided. All detectors shall be listed by Underwriters Laboratories for indoor or outdoor use. Physical/Operating Specifications Static Pressure Rating 250 PSI Maximum Surge 18 FPS Triggering Threshold 4–10 GPM Bandwidth (Flow Rate) Overall Dimensions, WFDT: 4.5˝ H × 3.75˝ W × 6.7˝ L Installed (11.4cm H × 9.5cm W × 17cm L) WFDTNR: 3.75˝ H × 3.25˝ W × 4.25˝ L (9.5cm H × 8.2cm × W × 10.8cm L) Contact Ratings Two sets of SPDT (Form C) 10.0 A @ 125/250 VAC 2.5 A @ 24 VDC Compatible Tee Threaded ferrous and brass tees, copper Fittings sweat tees, CPVC tees, and polybutylene tees Conduit Entrances Two openings for ½˝ conduit. Operating Temperature Range 32°F to 120°F (0°C to 49°C) Enclosure Rating UL indoor/outdoor rated Cover Tamper Switch UL models: optional P/N 546-7000 ULC/Canadian models: factory installed Service Use Automatic Sprinkler: NFPA 13 One or Two Family Dwelling: NFPA 13D Residential Occupancies up to 4 Stories: NFPA 13R National Fire Alarm Code: NFPA 72 Shipping Weight WFDT: 2.6 lbs. (1.2 kg.) WFDTNR: 1.5 lbs. (0.7 kg.) Warranty U.S. Patent Numbers 3 years 3,845,259; 4,782,333; 5,213,205 Electrical Connections for WFDT T16-0010-XXX B COM •CAUTION• ROUTE WIRING AWAY FROM SHARP EDGES & COPONENTS Delay Adjustment Dial 0 Delay adjustment dial NU CO A M SWITCH SCHEMATIC •READY• STATE CO M SWITCH 1 SWITCH 2 NOTE: Common and B connections will close when vane is deflected, i.e., when water is flowing. Dual switches permit applications to be combined on a single detector. WFDT/WFDTH B B CONTACT RATINGS 125/250 VAC 10 AMPS 24 VDC 2.5 AMPS DIAL IS APP R ON R DELAY IN SECO OXI ND MA BE M IME S T TE WFDT/WFDTH end-of-line resistor To nonsilenceable initiating zone of listed FACP COM COM COM COM 45 Typical FACP Connection To power source compatible with bell B NOTE: Retard time may exceed 90 seconds. Adjust and verify that time does not exceed 90 seconds. COM Typical Local Bell Connection Break wire as shown for supervision of connection. DO NOT allow stripped wire leads to extend beyond switch housing. DO NOT loop wires. WFDT, WFDTH switch assembly local bell Ordering Information UL Model WFDT WFDTNR Accessories A77-01-02 A77-01-08 A3008-00 PRK9 546-7000 S07-66-02 WFDW WFDN4 C58-164-01 C58-195-01 ULC Model WFDTA Description Waterflow Detector, Fits 1˝, 1¼˝, 1½˝, 2˝ ferrous and brass threaded tees; 1˝, 1¼˝, 1½˝, 2˝ copper sweat tees; 1˝ CPVC tees; and 1½˝ polybutylene tees Waterflow Detector, non-retard, fits same tees as Model WFDT WFDTNRA Description Replacement terminal block for WFDT Replacement terminal block for WFDTNR Replacement retard mechanism Replacement paddle kit – 12 paddles for WFDT and WFDTNR (see WFDT for sizes) Cover tamper switch kit for WFDT Replacement tamper screws for covers of WFDT, WFDTNR Replacement tamper proof wrench for cover of WFDT, WFDTNR NEMA-4 gasket kit Replacement metal cover Replacement plastic cover (WFDTNR) 3825 Ohio Avenue • St. Charles, IL 60174 Phone: 800-SENSOR2 • Fax: 630-377-6495 Spears® is a registered trademark of the Spears Manufacturing Company. Victaulic® is a registered trademark of the Victaulic Company of America. ©2007 System Sensor. Product specifications subject to change without notice. Visit systemsensor.com for current product information, including the latest version of this data sheet. A05-0195-011 • 4/07 • #1676 55 B B 70 15 30