wfdnf series waterfl ow detector the new wfdnf series water? ow detectors from system sensor consists of a rugged, nema 4-rated enclosure that is more damage resistant than previous metal designs. the water? ow detector is designed for both indoor and outdoor use, with the widest available temperature range, from 32f to 150f. the wfdnfs with glue-in tee adapter ? ts 1, 1?, 1?, and 2 cpvc tees manufactured by tyco, spears, nibbco, and ipex. the wfdnft with a threaded tee adapter ? ts 1, 1?, 1?, and 2 brass and copper threaded tees, in addition to 1 and 1? cpvc tees. clearly marked plastic paddles are included to ? t the different installation con? gurations. ul-listed models are equipped with tamper-resistant cover screws to prevent unauthorized entry. inside, two sets of spdt (form c) synchronized switches are enclosed in a durable terminal block with an layout designed to make wiring easy. the wire-ready com terminals are on a different elevation with a large barrier between switches and easy-to-read, raised, textured lettering. an optional cover tamper switch securely snaps into place, no tools required. the wfdnfs and wfdnft incorporate a mechanical time delay feature that minimizes the risk of false alarms due to pressure surges or air trapped in the ? re sprinkler system. the large and easy-to-turn timer dial makes setting the water? ow detector easy with high-contrast, pad-printed markings. the dial offers three tabs to help with turning: the largest tab is located on the dial position for approximately 60 seconds and a notch in the dial indicates approximately 30 seconds, making the detector easy to set in dimly lit locations. the wfdnf series is designed for accuracy and repeatability. detectors also offer improved performance during vibration in riser applications where detectors are exposed to a large in-rush of water. agency listings system sensor wfdnfs and wfdnft waterflow detectors are designed for primary signaling in systems that use cpvc fittings. features ? wfdnfs has a glue-in adapter for connection to 1, 1?, 1? and 2 cpvc tees ? wfdnft has a npt threaded adapter for connection to 1, 1?, 1? and 2 metal tees and 1 and 1? cpvc tees ? directional cover allows installers and inspectors to easily see the direction of flow ? ul-listed models are nema 4 / ip 54 rated ? cover is lightweight, unpainted and corrosion resistant ? sealed retard mechanism immune to dust and other contaminants ? less exposed metal reduces shock hazard, plastic cover acts as insulator and is resistant to arcing ? visual switch activation ? audible switch activation (73 dba) ? field-replaceable timer/switch assembly ? accommodates up to 12 awg wire ? switch synchronization activates both alarm panel and local bell or horn strobe ? tamper-resistant cover screws ? wire-ready terminals ? improved wiring with new terminal block layout ? snap-in optional cover tamper switch s739
3825 ohio avenue ? st. charles, il 60174 phone: 800-sensor2 ? fax: 630-377-6495 www.systemsensor.com ?2016 system sensor. product speci? cations subject to change without notice. visit systemsensor.com for current product information, including the latest version of this data sheet. wfds85300 ? 11/16 ordering information ul model description wfdnfs water? ow detector with glue in cpvc adapter , fits 1in., 1 ? in., 1 ? in., 2in. cpvc tees wfdnft w ater? ow detector with threaded cpvc adapter , fits 1in., 1?in., 1?in., 2in. brass threaded and copper sweat tees; 1in., 1?in. cpvc tees accessories FS-RT delay mechanism and switch assembly cts tamper-proof switch kit wfdw tamper-proof wrench for cover engineering specifi cations model shall be wfdnfs or wfdnft as manufactured by system sensor. water? ow detectors shall be installed on a 1, 1 ? ., 1 ? . or 2. cpvc tee manufactured by tyco, spears, nibbco, or ipex as designated on the drawing and /or as speci? ed herein. detectors shall mount on any clear pipe span of the appropriate nominal size, either a vertical up? ow or horizontal run at least 6? from any ? ttings or valves that may change water direction, ? ow rate, or pipe diameter or no closer than 24in. 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 175 psi. the wfdnfs or wfdnft detector with incorpor ated time delay mechanism shall respond to water? ow in the speci? ed direction after a preset time delay that is ? eld adjustable. the delay mechanism shall be a sealed mechanical pneumatic unit with visual and audible indication of actuation. the actuation mechanism shall include a ethylene vinyl acetate vane inserted through a hole in the pipe and connected by a mechanical linkage to the delay me chanism. outputs shall consist of dual spdt switches (form c contacts). two conduit entrances for standard ? ttings of commonly used ele ctrical conduit shall be provided on the detectors. a grounding provision is provided. unless noted, enclosures shall be nema 4 listed by underwriters laboratories inc. all detectors shall be listed by underwriters laboratories inc. for indoor or outdoor use. waterflow detector specifications standard specifi cations static pressure rating 175 psi operating temperature range 32f to 150f (0c to 60c) maximum surge 18 feet per second (fps) enclosure rating* nema 4 C suitable for indoor/outdoor use triggering threshold bandwidth (flow rate) 4 C 10 gpm cover tamper switch optional, part no. cts conduit entrances two openings for ?in. conduit. nema 4 rated plugs 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 contact ratings two sets of spdt (form c) 10.0 a, ? hp @ 125/250 vac 2.5 a @ 6/12/24 vdc compatible tee fittings 1 warranty 3 years wfdnfs / wfdnft field wiring diagram overall dimensions, installed wfdnfs, wfdnft w0400-00 w0401-00 3-1/2" 2-5/8" 4-1/2" tee depth plastic vane locking collar tee adapter tee fitting 3-1/2" 2-5/8" tee depth 4-3/32 plastic vane locking collar tee adapter tee fitting
|
