System Sensor WFDTNR Manual

INSTALLATION AND MAINTENANCE INSTRUCTIONS Vane type Waterflow Detector A 125 250 VAC 2.5 A 24 VDC Ratings Threshold Bandwidth Flow Rate 4 to 10 GPM Pressure Rating Installed Temperature Range Weight Rating S Patent Number PSI Max in H 31 in W 41 in D 31 in above pipe tee to 120 0 to 49 lbs 3825 Ohio Avenue St Charles Illinois 60174 FAX 630 377 6495 Read Carefully And Save gUIDELINES installing any waterflow alarm device be thoroughly familiar with instruction manual contains important information about the installation operation of waterflow detectors Purchasers who install waterflow detec for use by others must leave this manual or a copy of it with the user all instructions carefully before beginning 72 13 25 Maintenance and Use of Local Protective Signalling Systems of Sprinkler Systems specifically Section 3.17 Inspection Testing and Maintenance of Sprinkler Systems specifi Chapters 4 and 5 and Section 5.3.3.2 vane type waterflow detectors in wet pipe systems only DO NOT USE IN DELUGE OR PRE ACTION SYSTEMS The sudden inrush of water such systems may break the vane off or damage the mechanism Do not use potentially explosive atmospheres Do not leave unused wires exposed OF OpERATION waterflow detectors mount to wet pipe systems only Water flow in pipe deflects a vane Deflection of the vane produces a switched output detectors will activate on a sustained flow of water greater than 10 gallons minute gpm but will not activate if the flow rate is less than 4 gpm pIpE TEES RISERS WFDTNR fits 1 to 11 NPT threaded ferrous and brass 1 to sweat brass 11 polybutylene plastic and 1 inch pvc plastic tees a 1 inch threaded NPT branch see Figure 1 and chart for recom tee depths For 2 inch cast and malleable threaded tees use 2 inch P02 0023 00 provided Use 1 inch CPVC paddle when installing de on 1 inch slip by 1 inch slip by 1 inch FPT NIBCO tee TEE DEPTH REQUIREMENTS SEE FIGURE 1 Depth Sweat Poly B CPVC 1 1 11 4 1 11 2 1 2 1 1 MOUNTINg DIMENSIONS DEPTH TO DEPTH TEE GAGE OF PADDLE TREE MUST BETWEEN TOP OF TEE BOTTOM OF HEX TEE FLANGE TEE FITTING VANE 13D Standard for Residential Dwellings 13R Standard for Multifamily Dwellings 2 ASSEMbLy DIAgRAM WFDW NPT THREAD FLOW applicable NFPA standards local codes and the requirements of the having jurisdiction to follow these directions may result in failure of the device to report waterflow condition System Sensor is not responsible for devices that have improperly installed tested or maintained Mount the detector where there is adequate clearance for installation and removal a clear view of it for inspection See Figure 1 for mounting dimensions to protect from damage 6 7 feet above the floor On horizontal runs position the detector on top of the pipe or on the Do not mount it upside down Mount detector at least 6 inches from a fitting which changes the direc of the water flow BE SURE DIRECTION OF FLOW ARROW MATCHES ACTUAL DIREC OF FLOW IN THE PIPE INSTRUCTIONS This WFDTNR waterflow detector is designed to fit only the appropriate tee fitting NOTE Leg of tee perpendicular to flow of water must have a 1 inch NPT Do not use a reducer to achieve the correct thread size Failure follow this instruction will result in failure of the detector to report a condition WFDT units are shipped without the paddles mounted to the actuator the correct size paddle for the tee being used the appropriate nomi pipe diameter size is molded on the surface of the paddles Align hole stem of paddle with hole on actuator lever Fasten together using a fillister head screw supplied in bag assembly See Figure Use only the screw provided with the WFDTNR Drive screw head hole in paddle until it seats firmly to actuator lever surface No is required For paddle replacement refer to Maintenance section Thread detector onto tee fitting and tighten with wrench Use of thread or tape is recommended Use height gage located at end of pad tree to ensure proper depth of detector on tee fitting See Figure 1 gage must fit between top of tee fitting and under side of hex tee A gap between gage and tee adapter is acceptable When cor installed the detector must face in the proper direction of water and be aligned with the pipe Remove the plastic cover with the tamper proof wrench provided Move actuator lever back and forth to check for binding If the vane binds the detector and correct the problem before proceeding sure the direction of flow arrow points in the correct direction otherwise a condition will go unreported See Figure 2 TESTINg notify a central station monitoring waterflow alarms before repairing or testing waterflow alarm devices Fill the sprinkler and check for leaks around the WFDTNR If it leaks to see that the fittings are tight If leak persists drain the system remove the detector see removal instructions under Maintenance for damaged threads or cracked fitting Reinstall detector and again for leaks Do not proceed until all leaks have been stopped With cover removed connect an ohmmeter or continuity tester across and B NO terminal switch contacts The ohmmeter should show an circuit no continuity when the red switch buttons are depressed Deflect the actuator lever to release the switch buttons The ohmmeter or tester should show a short circuit when the switch buttons are Open the inspector test valve to allow the detector to indicate a flow The detector should remain activated until the inspector test is closed Air pockets in the sprinkler system may prevent the de from firing immediately Replace the cover and tighten the security screws with the tamper proof Store wrench is a secure place WIRINg The WFDT has two SPDT switches Switch contacts COM and B NO are when water is flowing and open when water is not flowing Con the switches as shown in Figure 3 depending on the application When connected to a listed sprinkler fire alarm control panel the initiat circuit must be non silenceable A ground screw is provided with all WFDT units When grounding is re clamp wire with screw in hole located between conduit entrance See Figure 2 Voltage Electrocution Hazard Do not handle live AC wiring or work on a de to which AC power is applied Doing so may result in severe injury or death utilizing switches at voltages greater than 74VDC to provide all disconnection must be incorporated in the field wir such as a circuit breaker or 49VAC 3 FIELD WIRINg LISTED PANEL OR COMMON AND B NO WILL CLOSE VANE IS DEFLECTED I E WATER IS FLOWING DUAL PERMIT TO BE COMBINED A SINGLE DETECTOR EOL VAC RATINGS AMPS AMPS VDC OF IN WATERFLOW WIRE AS FOR OF DO ALLOW WIRE TO EXTEND SWITCH DO NOT WIRES prevent accidental water damage control valves should be shut tightly the system completely drained before waterflow detectors are removed replaced detectors in accordance with applicable NFPA codes and standards the authority having jurisdiction f