Wfdt
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The document describes the System Sensor T-Tap Waterflow Detectors. It has two models - the WFDT retard model with a sealed retard mechanism, and the WFDTNR non-retard model. Both models fit various tee fittings and have durable, tamper-resistant enclosures with dual SPDT switches. They are designed for primary signaling in residential fire alarm systems and branch line signaling in larger systems.
Wfdt
- 1. 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 Both the WFDT retard model and the WFDTNR non-retard model fit • Sealed retard mechanism (Model WFDT) 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 • Visual switch activation (Model WFDT) tees; Tyco, Spears®, Victaulic® and NIBO brand 1˝ CPVC tees; and 1½˝ • Twelve different flexible plastic paddles polybutylene tees. • Vertical or horizontal mount Design. The design of the WFDT and WFDTNR makes them easy • Durable, tamper-resistant enclosure to install and simple to maintain. Either can be mounted in the • Dual SPDT switches in durable terminal block vertical or horizontal position. Two conduit openings permit easy • Sizes marked on flexible plastic paddles attachment to the local alarm system. The retard mechanism (Model WFDT only) and switch assemblies are field-replaceable. • 100 percent synchronization activates both alarm panel and local bell • Accommodates up to 12 AWG wire 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 ensures 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 robust covers completely enclose the electrical components to keep out dust and dirt. Improved self-guiding security screws and removal tools make the 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 7770-1653:114 167-93-E 3033305
- 2. 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; Tyco, Spears,® Victaulic,® and NIBCO 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 that 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 Operating Temperature Range 32°F to 120°F (0°C to 49°C) Maximum Surge 18 FPS Enclosure Rating UL indoor/outdoor rated Triggering Threshold 4–10 GPM Cover Tamper Switch UL models: optional P/N 546-7000 Bandwidth (Flow Rate) ULC/Canadian models: factory installed Overall Dimensions, WFDT: 4.5˝ H × 3.75˝ W × 6.7˝ L Service Use Automatic Sprinkler: NFPA 13 Installed (11.4cm H × 9.5cm W × 17cm L) One or Two Family Dwelling: NFPA 13D WFDTNR: 3.75˝ H × 3.25˝ W × 4.25˝ L Residential Occupancies up to 4 Stories: NFPA 13R (9.5cm H × 8.2cm W × 10.8cm L) National Fire Alarm Code: NFPA 72 Contact Ratings Two sets of SPDT (Form C) Shipping Weight WFDT: 2.6 lbs. (1.2 kg.) 10.0 A @ 125/250 VAC WFDTNR: 1.5 lbs. (0.7 kg.) 2.5 A @ 24 VDC Compatible Tee Threaded ferrous and brass tees, copper Warranty 3 years Fittings sweat tees, CPVC tees, and polybutylene tees Conduit Entrances Two openings for ½˝ conduit. U.S. Patent Numbers 5,213,205 Electrical Connections for WFDT Delay Adjustment Dial NOTE: COMMON AND B-NO DELAY UL-LISTED SSM24-X CONNECTIONS WILL CLOSE ADJUSTMENT COMPATIBLE SSV120-X WHEN VANE IS DEFLECTED, I.E., DIAL DIAL IS APP ON R CONTROL PANEL WHEN WATER IS FLOWING. DUAL R DELAY IN SECO OXI SWITCHES PERMIT BE ND MA POWER + APPLICATIONS TO BE COMBINED M IME S T NU TE 24VDC OR ON A SINGLE DETECTOR. 0 120VAC – CONTACT RATINGS 15 70 + INITIATING SUGGESTED EOL 125/250 VAC 10 AMPS LOOP RESISTOR – 24 VDC 2.5 AMPS SCHEMATIC OF A-NC INDIVIDUAL 30 55 SWITCH IN COM “NO WATERFLOW” CONDITION B-NO 45 BREAK WIRE AS SHOWN FOR SUPERVISION OF CONNECTION. DO NOT ALLOW STRIPPED WIRE LEADS TO EXTEND NOTE: RETARD TIME MAY EXCEED 90 SECONDS. ADJUST BEYOND SWITCH AND VERIFY THAT TIME DOES NOT EXCEED 90 SECONDS. NUMBER ON DIAL IS APPROXIMATE TIME DELAY IN HOUSING. DO NOT SECONDS WITH AN ACCURACY OF +/− 50%. LOOP WIRES. Ordering Information UL Model ULC Model Description WFDT WFDTA 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 WFDTNR — Waterflow Detector, non-retard, fits same tees as Model WFDT Accessories Description A77-01-02 Replacement terminal block for WFDT A77-01-08 Replacement terminal block for WFDTNR A3008-00 Replacement retard mechanism PRK9 Replacement paddle kit – 12 paddles for WFDT and WFDTNR (see WFDT for sizes) 546-7000 Cover tamper switch kit for WFDT S07-66-02 Replacement tamper screws for covers of WFDT, WFDTNR WFDW Replacement tamper-proof wrench for cover of WFDT, WFDTNR WFDN4 NEMA-4 gasket kit C58-164-01 Replacement metal cover C58-195-01 Replacement plastic cover (WFDTNR) Spears® is a registered trademark of the Spears Manufacturing Company. Victaulic® is a registered trademark of the Victaulic Company of America. ©2010 System Sensor. 3825 Ohio Avenue • St. Charles, IL 60174 Product specifications subject to change without notice. Visit systemsensor.com for current product information, including the latest version of this data sheet. Phone: 800-SENSOR2 • Fax: 630-377-6495 A05-0195-014 • 7/10 • #2450