Fire-Lite WFD10-40 Waterflow Detector

GENERAL Sensor WFD vane type Waterflow Detectors de the flow of water in wet pipe sprinkler pipes The provide a signal which can be used by fire systems fire control systems and auxiliary when waterflow occurs WFD Series detectors used for wetpipe sprinkler systems that use ferrous or black iron piping 1 lines and larger Models are to fit both Schedule 10 and Schedule 40 pipe for 1 and 1 1 2 copper pipe systems WFD sprinkler products are specifically designed to meet the performance requirements of sprinkler and fire systems The design of these devices ease of installation and field maintenance Sealed retard Visual switch activation Rugged switch assembly Heavy duty aluminum pipe saddles Durable metal enclosure Rugged terminal block accommodates wires up to 12 3.25 mm2 Three year limited warranty Two SPDT synchronized switches Tamper resistant assembly Optional tamper indicator Steel U bolts provide secure mounting Impact resistant cover protects mechanism 1 through 8 models available Schedule 10 40 pipe Adjustable delay 0 to 70 seconds SEMS clamping plate Water resistant Vertical or horizontal mounting Adjustable pneumatic delay prevents false alarms due to surges Serviceable without draining pipe Requires no power to operate sensing mechanism Improved self guiding security screws and removal tool Useful for waterflow rates up to 15 feet per second 4.57 per second flowing in the pipe deflects the WFD cid 146 s vane which a linkage to release the pneumatic delay shaft stop on the shaft then releases the switch levers at a determined by the presetting of the pneumatic delay When the shaft and its stops have pulled far away the spring operated switch levers actuate SPDT switches which each have NO and NC termi that can be used to initiate an alarm or auxiliary 17 1998 10 40 Detectors 1 cid 150 8 Conventional Initiating Devices Fire water stops flowing the vane is no longer deflected a spring draws the actuator arm of the linkage back the stops on the pneumatic delay shaft closing switch levers and returning the device to its normal Observe switch activation with cover open pneumatic delay mechanism is adjustable within a of 0 to 70 seconds It incorporates an automatic reset to accommodate a sequence of surges acquiring an accumulated delay greater or less the preset value As shipped the adjustment dial is for a delay of 20 30 seconds but any value within the to 70 second range can be selected in the field are used in wetpipe sprinkler systems to signal of 4 to 10 GPM The flow could be due to the of one or more sprinkler heads or test valves or it be due to leakage or rupture of the piping the appropriate choice of installation sites the WFDs be used to signal general flow installed in mains or by zones installed in branch lines Either horizontal vertical pipes can be utilized document is not intended to be used for installation purposes We try to keep our information up to date and accurate We cannot cover all specific applications or all requirements All specifications are subject to change without notice For information contact Fire cid 149 Lite Phone 203 484 7161 FAX 203 484 7118 Clintonville Road Northford Connecticut 06472 and Manufacturing System Certified to Standard ISO 9001 in the U S A cid 151 Page 1 of 2 usages of WFDs include operating a bell or horn the riser and signaling a control panel or master box the WFDs are used at the upper limits of their tempera ranges especially at a 100 duty cycle their working may be significantly shortened The vane and linkage of the WFD can be by the sudden rush of water when the control opens DO NOT use vane type waterflow detectors drypipe sprinkler systems deluge systems or pre ac systems Use a pressure actuated detector on such instead details of proper location and the method of installing detector on the pipe are contained in the installation packed with each detector Briefly a properly cen hole is made in the drained pipe The edges of the are squeezed together sufficiently to allow it to be through the hole as the detector is set in place on pipe A U bolt clamps the saddle of the detector the pipe sealing the O ring around the hole to leakage and securing the detector in place Loop is connected to the switches as appropriate Tamper screws hold the cover in place over the mecha to protect the device wrench WFDW mechanism A3008 00 plate saddle vane paddle opposite flow arrow inserting gasket L Size to 3 1 2 to 8 Size in in 2 of 2 cid 151 DF 50943 enclosure A77 01 02 screw nut 2 8 LINE INFORMATION Waterflow Detector Schedule 10 40 2 Waterflow Detector Schedule 10 40 2 1 2 Waterflow Detector Schedule 10 40 3 Waterflow Detector Schedule 10 40 3 1 2 Waterflow Detector Schedule 10 40 4 Waterflow Detector Schedule 10 40 5 Waterflow Detector Schedule 10 40 6 Waterflow Detector Schedule 10 40 8 Waterflow Detector FITS 1 1 1 4 1 1 2 fer and brass threaded tees 1 1 1 4 1 1 2 2 sweat tees 1 CPVC tees and 1 1 2 poly tees Switch Kit for WFD Detectors Assembly for Waterflow Detectors 2 to 8 sizes Wrench for metal cover WFD Detec and WFDT gasket kit for WFD Series Master packed 6 waterflow detectors per box OPERATION Ratings 10 A 125 VAC 2.5 A 24 VDC Threshold Bandwidth Flow Rate 4 cid 150 10 minimum Delay Adjustment Temperature Ranges Ambient Air 32 cid 176 F to 120 cid 176 F 0 cid 176 C to 49 cid 176 C System Water 32 cid 176 F to 100 cid 176 F 0 cid 176 C to 43 cid 176 C Component Materials aluminum saddle steel u cast aluminum mounting plate epoxy painted metal polyethylene vane Dimensions Installed HWD 3.5 H x P D 3.0 W x 6.7 D Air Compatible Pipe Steel water pipe Sched 10 40 copper models available Pressure Rating 250 PSI maximum 2 cid 150 8 Weight Varies from 4 lbs to 7 lbs 1.81 to kg according to size SPECIFICATIONS Waterflow Detectors shall be installed on sys piping as designated on the drawings and or as speci herein Detectors shall mount on any clear pipe span the appropriate nominal size either a vertical or hori run at least 6 15.24 cm from any fittings or which may change water direction flow rate or diameter or no closer than 24 60.96 cm to a valve drain The detector shall respond to waterflow in the direction after a preset time delay which is field The actuation mechanism shall include a vane inserted through a hole in the pipe and by a mechanical linkage to the delay mecha Outputs shall consist of 10 A Dual SPDT Switches Contacts A conduit entrance for standard fit of commonly used electrical conduit shall be pro on the detectors All detectors shall be listed by Laboratories Inc for indoor or outdoor use