System Sensor eps 10 1 eps 10 2 Pressure Switch

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SYSTEM SENSOR Division of Pittway 3825 Ohio Avenue St Charles Illinois 60174 FAX 630 377 6495 AND MAINTENANCE INSTRUCTIONS Vane type Waterflow Ratings A 125 250 VAC A 24 VDC Threshold Bandwidth Flow Rate 4 to 10 gpm Pressure Rating Installed Temperature Range Pipe Weight Rating optional Outdoor Cover Gasket Model WFDN4 and cover part C58 164 01 PSI Max 2 8 x 3.0 W x 6.7 D F to 120 cid 176 F 0 cid 176 C to 49 cid 176 C water pipe schedule 10 or 40 to 7 lb according to size 4 as tested by Underwriters Laboratories Inc Read Carefully And Save instruction manual contains important information the installation and operation of waterflow detectors who install waterflow detectors for use by oth must leave this manual or a copy of it with the user all instructions carefully before beginning Follow those instructions that apply to the model you are in vane type waterflow detectors in wet pipe systems Do NOT use them in dry pipe deluge or preaction The sudden inrush of water in such systems may the vane or damage the mechanism not use in potentially explosive atmospheres Do not al unused wires to remain exposed Of Operation waterflow detectors mount to water filled pipes sprinkler systems Waterflow in the pipe deflects a vane produces a switched output after a specified All waterflow detectors have a pneumatically con mechanical delay mechanism Delays do NOT accu they reset if the flow of water stops before the delay has elapsed All switches actuate when the wa flow rate is 10 gallons per minute or greater but will not if the flow rate is less than 4 gallons per minute System Sensor installation manual covers the follow waterflow detectors for sprinkler fire alarm applica 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 Manuals Online NOT use any of the WFD models on copper pipe The forces of the mounting bolts may collapse the sufficiently to prevent the detector from functioning NOT install steel or iron pipe sections in copper piping mounting a waterflow detector Incompatibility be the dissimilar metals causes bimetallic corrosion Guidelines installing any waterflow alarm device be thor familiar with 72 National Fire Alarm Code 13 25 of Sprinkler Systems Section 3.17 Testing and Maintenance of Sprin Systems applicable NFPA standards local codes and the re of the authority having jurisdiction to follow these directions may prevent the device reporting the flow of water in the event the associated system is activated by a fire System Sensor is not for devices that have been improperly installed or maintained Mount the detector where there is adequate clearance for and removal and a clear view of it for inspec See Figure 1 for mounting dimensions Locate to protect from damage to 7 feet above the On horizontal runs position the detector on the top or of the pipe Do not mount it upside down because may collect in the housing and impair the of the detector vertical flow applications mount the detector on through which water flows upward Otherwise the may not operate properly Mount the detector at least 6 inches from a fitting that the direction of water flow and no less than 24 from a valve or drain Be sure the direction of flow arrow matches the direction flow in the pipe Instructions Drain the pipe Cut a hole at the desired location Center the hole in the as shown in Figure 2 and be sure the hole is per to the center of the pipe Before drilling use a or scribe to mark the drill site to prevent the bit slipping If the hole is off center the vane will bind the inside wall of the pipe Use a drill or hole to cut a hole of the proper diameter See Table 1 for size Manuals Online 1 Mounting dimensions nut saddle diameter cid 13 5 1 4 vane width pipe diameter 3 2 Mounting hole location burrs from edge of hole Clean out scale and foreign cid 13 for one pipe diameter on each side of hole 1 2 SIZE 3 1 2 8 Size SIZE 3 1 2 35 ft lb 8 60 ft lb drilling the hole with a hole saw make certain that the center of the cut does not remain in the pipe Voltage Electrocution Hazard Do not handle live AC or work on a device to which AC power is applied so may result in injury or death All models have two SPDT switches Switch contacts and B are closed when water is flowing and open it is not Connect the switches as shown in Figure on page 5 depending on the application When connected to a listed sprinkler fire alarm control the initiating circuit must be nonsilenceable A ground screw is provided with all waterflow detectors grounding is required clamp wire with screw in located between conduit entrance holes See Figure page 5 If a second conduit entry is required remove the knock plug using a flat blade screwdriver as shown on Fig 5B page 5 Strike sharply with a hammer to pierce wall of the knockout plug Move to an adjacent wall and repeat until the plug falls out Make sure the waterflow detector is supported adequately dur this operation to avoid injury Remove burrs and sharp edges from the hole Clean and all scale and foreign matter from the inside of pipe for one diameter on each side of the hole to en free movement of the vane Clean the outside of the to remove dirt metal chips and cutting lubricant Seat the O ring or gasket against the saddle and mount detector directly to the pipe Carefully roll the vane the direction of flow and insert it through the Seat the saddle firmly against the pipe so that the boss goes into the hole Install the U bolt tightening the nuts alternately to en a uniform seal See Table 2 for torque values Remove the metal cover with the tamper proof wrench Move the actuator lever back and forth to for binding If the vane binds remove the detector correct the cause before proceeding sure the direction of flow arrow points in the right direc or else water flow will go unreported See Figure 3 Testing Fill the sprinkler system and check for leaks around the detector If it leaks first check for the proper on the U bolt nuts If the leak persists drain the and remove the detector refer to Maintenance 6 Check for dirt or foreign objects under the gas and make sure that the pipe surface is not dented the detector and check again for leaks Do not until all leaks have been stopped Connect an ohmmeter or continuity tester across the and B switch terminals The ohmmeter should in an open circuit Deflect the actuator lever and hold it until the pneumatic shaft releases the switch buttons The ohmmeter continuity tester should show a short circuit after the has elapsed If there is no delay check the setting the delay adjustment dial Manuals Online 3 Assembly diagram proof wrench cid 13 WFDW enclosure cid 13 P N A77 01 02 entrance cid 13 arrow nut mechanism cid 13 A3008 00 plate saddle vane paddle opposite cid 13 flow arrow inserting gasket t e rfl o Size Hole Size 3 1 2 cid 13 I 8 Manuals Online 4 WFD wiring Switch cid 13

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