System Sensor WFDT and WFDTH Manual

insTaLLaTion anD mainTenance insTrUcTions Ohio Avenue St Charles Illinois 60174 FAX 630 377 6495 vane type Waterflow Detectors Ratings Threshold Bandwidth Flow Rate Pressure Rating Installed Temperature Range Weight Rating WFDTH can be installed between 2 stud wall construction Patent Number 2.5 A 24 VDC sets of SPDT Form C 10 A 125 250 VAC 10 GPM PSI Max 45 in H 33 in W 63 in D WFDTH 45 in H 39 in W 63 in D to 120 0 to 49 lbs NEMA Type 4 as tested by Underwriters Laboratories Inc UL IP56 Indoor use only as tested by UL IP10 Read Carefully And Save 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 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 water filled pipes in sprinkler sys Water flow in the pipe deflects a vane Deflection of the vane produces switched output usually after a specified delay WFDTs have a pneumatically controlled mechanical delay mechanism De are noncumulative they reset if the flow of water stops before the entire has elapsed All detectors will activate on a sustained flow of water than 10 gallons per minute gpm but will not activate if the flow rate less than 4 gpm pipe Tees risers WFDT and WFDTH fit 1 to 11 NPT threaded ferrous and brass to 2 inch sweat brass 11 polybutylene plastic and 1 inch pvc plastic having 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 000 provided The WFDT and WFDTH also fits 1 11 2 2 inch Reliable riser manifolds when used with paddle tree P02 0103 000 seperately Use 1 inch CPVC paddle when installing detector on a 1 inch slip x 1 inch slip x 1 inch FPT 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 TEE TABLE GAGE OF PADDLE TREE MUST BETWEEN TOP OF TEE BOTTOM OF FLANGE FITTING VANE gUiDeLines installing any waterflow alarm device be thoroughly familiar with 72 National Fire Alarm Code 13 25 of Sprinkler Systems Inspection Testing and Maintenance of Water based Fire Protec Systems Section 5.3.3.2 13D Standard for 1 and 2 Family Dwellings and Manufactured Homes 13R Standard for Multi family Dwellings follow other applicable NFPA standards local codes and the require of the authority 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 and a clear view of it for inspection See Figure 1 for mounting to protect from damage 6 7 feet above the floor On horizontal runs position the detector on top of the pipe or on the side it Do not mount it upside down because condensation may collect in housing and impair the operation of the detector For vertical flow applications mount detector on pipe where upflow con exist Failure to do so may prevent unit from operating properly Mount detector at least 6 inches from a fitting which changes the direc of the water flow or no closer than 24 inches from a valve or drain BE SURE DIRECTION OF FLOW ARROW MATCHES ACTUAL DIREC OF FLOW IN THE PIPE 2 assembLY Diagram WFDW TAMPER 546 7000 BLOCK P N SCREW PRK9 NPT SCREW A3008 00 ONLY insTrUcTions The WFDT and WFDTH waterflow detectors are designed to fit only the 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 and WFDTH units are shipped without paddles mounted to the Select the correct size paddle for the type of tee being used hole on stem of paddle with hole on actuator lever Fasten together a 4 40 fillister head screw supplied in bag assembly See 2 Use only the screw provided with the unit Drive screw head hole in paddle until it seats to actuator lever surface No washer required For paddle replacement refer to Maintenance section Carefully roll the vane opposite the direction of flow and insert through Thread detector onto tee fitting and tighten with wrench Use of sealant or tape is recommended Use height gage located at end paddle tree to ensure proper depth of detector on tee fitting See Fig 1 Height gage must fit between top of tee fitting and under side of tee adapter A gap between gage and tee adapter is acceptable When installed the detector must face in the proper direction of wa and be aligned with the pipe Remove the metal cover Move the actuator lever back and forth to check binding If the vane binds remove the detector and correct the prob before proceeding sure the direction of flow arrow points in the right direction otherwise a condition will go unreported See Figure 2 TesTing Fill the sprinkler system with water and check for leaks around the or WFDTH If there is a leak check to see that the fittings are If leak persists drain the system and remove the detector see re instructions under Maintenance Check for damaged threads or fitting Reinstall the detector and check again for leaks Do not until all leaks have been stopped Connect an ohmmeter or continuity tester across COM and B NO ter switch contacts The ohmmeter should show an open circuit no Deflect the actuator lever and hold it until the pneumatic delay shaft the switch buttons The ohmmeter or continuity tester should a short circuit after the delay has elapsed If there is no delay the setting of the delay adjustment dial Wiring Voltage Electrocution Hazard Do not handle live AC wiring or work on device to which AC power is applied Doing so may result in severe injury death utilizing switches at voltages greater than 74VDC to provide all disconnection must be incorporated in the fixed such as a circuit breaker or 49VAC The WFDT and WFDTH have two SPDT switches Switch contacts COM B NO are closed when water is flowing and open when water is not Connect the switches as shown in Figure 3 depending on the When connected to a listed sprinkler fire alarm control panel the initiat circuit must be non silenceable A ground screw is provided with all units When grounding is required wire with screw in hole located between conduit entrance holes Figure 2 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 a