Rain Bird Controls Division WST Wireless Rain Sensor User Manual WRC Rain r13

Rain Bird Corporation - Controls Mfg. Division Wireless Rain Sensor WRC Rain r13

User Manual

Rain Bird Sales, IncCommercial Division6640 S. Bonney AvenueTucson, AZ 85706 USAPhone: (520) 434-6200Fax: (520) 434-6246Specification Hotline (USA and Canada only):1-800-458-3005Rain Bird Sales, IncContractor Division970 West Sierra Madre AvenueAzusa, CA 91702 USAPhone: (626) 812-3400Fax: (626) 812-3411Technical Assistance (USA and Canada only):1-800-247-3782Wireless Rain andWireless Rain/Freeze Sensor Installation and Operating Instructions for:WRC: Wireless Rain Sensor ComboWRT: Wireless Rain Sensor TransmitterWSR: Wireless Rain Sensor ReceiverWRFC: Wireless Rain and Freeze Sensor ComboWRFT: Wireless Rain and Freeze Sensor Transmitter7/03 635927
Wireless Rain and Freeze Sensor WiringImportant! Before connecting wires, you must determine whether your controller uses“Normally Open” or “Normally Closed” wiring for sensors.All Rain Bird controllers, and most other manufacturers’ controllers, are installed using a“Normally Closed” wiring method.Normally Closed InstallationNote: The lead wire labeled “NO” is not used with this installation method.Controllers With Sensor InputMany modern controllers (such as Rain Bird’s E Class,ESP-LX+, and ESP-MC) include built-in terminals forsensor input. Dedicated terminals are usually labeled“sensor” or “SN” on the controller’s terminal strip. SeeIllustration 3.1. Connect the Red and Black leads to the two 24VACterminals on your controller. (It is not important whichwire goes to which terminal.)2. To connect the Rain and Freeze Sensor, remove thejumper wire (if present) from the controller’s sensorterminals.3. Connect the Green lead and the Brown lead to theSensor Terminals on your controller.Controllers Without Sensor InputUse the procedure below if your controller does NOT havededicated sensor terminals. See Illustration 4.1. Connect the Red and Black leads to the 24 VACterminals on your controller.2. Disconnect the valve common wire from the commonterminal (“C” or “COM”) on the controller’s terminalstrip. Connect the valve common wire to the greenlead on the Sensor Receiver.3. Connect the Brown lead to the “COM” terminal on thecontroller’s terminal strip.Normally Open InstallationSome non-Rain Bird controllers require rain sensors to be installed “Normally Open”(“NO”). In this case, substitute the White Lead for the Brown Lead in the installation for a“Normally Closed” (“NC”) installation (above). Be sure to consult with the controllermanufacturer’s manual to determine the appropriate procedure for connecting the RainSensor to your controller.Note: In this case, the brown wire will not be used.WRS-100 Wireless Rain Sensor 2Wireless Rain and Freeze SensorThe Wireless Rain Sensor automatically monitors rainfall and shuts off your sprinklers toprevent unnecessary watering. Rain/Freeze Transmitter will also prevent watering infreezing conditions.Note: The Wireless Rain Sensor is a low-voltage device compatible with all 24 voltalternating current (VAC) control circuits and 24 VAC pump start relays.The Wireless Rain and Freeze Sensor is a very sophisticated Sensor Transmitter andReceiver system designed to work with all 24 volt alternating current (VAC) controlcircuits and 24 VAC pump start relay circuits. The Receiver has three Light EmittingDiodes (LEDs). Each LED can indicate two conditions. If the LED is solid then thecondition labeled on the left is occurring. If the LED is blinking the condition labeledon the right has taken place. These are explained on page 7.1. InstallationNote: Follow the installation instructions carefully and install the unit only in full compliancewith the National Electrical Code (NEC) or your local electrical code.There are two components of the Wireless Rain Sensor product, the Sensor Transmitter andthe Receiver.Important!: Begin by installing the Receiver and test the two components (transmitter andreceiver) side by side before mounting the Sensor Transmitter.Wireless Rain and Freeze Sensor Receiver Mounting1. Select a place near your controller where you will install the Receiver. Ensure that therewill be room for the receiver antenna and that the leads will reach to the sensorconnection on your controller (approximately 24 inches).Note: The Receiver unit is weather resistant and is suitable for mounting near an outdoorcontroller.2. Secure the bracket to the wall near your controller with appropriate fasteners. Be sure toinstall the bracket with the flanges facing out away from the wall. See Illustration 1.3. Slide the water resistant receiver unit down onto the mounting bracket.See Illustration 2.4. Attach the red “Notice” sticker to your automated irrigation system control panel.5. Attach the gray “Receiver” memory sticker to the side of the Receiver.1 WRS Wireless Rain and Freeze Sensor1Mount Receiverbracket nearexistingcontroller.2Slide Receiverdown on to themountingbracket.ReceiverMemoryRecordInstall bracketwith flangesfacing outfrom the wall.COM 1 2 3MVSENSORTRANSFORMERSENSORGND24V24V REDBLACKGREENBROWNORANGEORANGETORECEIVER34
Testing the Transmitter and Receiver Pair If you bought the Transmitter andReceiver together, they wereprogrammed at the factory towork together. If you purchasedthem separately, or, if thefollowing test procedure doesn’twork properly, it may benecessary to program thereceiver to work with thetransmitter. Use the followingprocedure to test the two unitstogether. See Illustration 5.1. Push and hold the pin for a few seconds on the top of the Sensor Transmitter.2. If the Receiver detects the signal, the Red LED will begin to indicate “WateringSuspended”.3. You can release the Transmit button and continue with the installation.SENSORBYPASSWateringSuspendedWATERING SUSPENDEDBY SENSOR5Test Sensor Transmitter with ReceiverSelect an appropriate mounting location as describedabove. Drive two mounting screws through themounting holes in the mounting bracket. Usefasteners appropriate for the mounting surface (wood, tile, masonry, etc.).Be sure to test the reception of the signal from thesensor, in this location, to the receiver using this procedure.1. Push and hold the Transmitter button for at least four (4) seconds (but not more than14 seconds).2. The Sensor Transmitter will send a signal with lower than normal power.3. If the Receiver detects the signal, the Red LED will begin flashing for a duration of 2.5minutes. This allows a single installer time to return to the Receiver to verify the signalwas received. If the LED is flashing, the selected Transmitter location is within range.2. OperationSet Rainfall SettingThe rainfall setting determines the amount of rainfall needed to prevent your irrigationsystem from watering. You can adjust the rainfall setting from 1⁄8" to 3⁄4" (5mm to 20mm).The ideal rainfall setting for your location depends on soil type, humidity, amount of directsunlight the sensor receives and frequency and amount of rainfall. The table below givessome guidelines to help determine the appropriate rainfall setting. (See table)Note: At the 1⁄8" or 5mm setting , a very light rainfall will activate the sensor and suspendwatering. The 1⁄8" or 5mm rainfall setting is not recommended in areas with high humidity.To set the rainfall setting, turn the sensor dial cap until the desired rainfall setting lines upwith the arrow on the sensor body (A), as shown in Illustration 8.WRS Wireless Rain and Freeze Sensor 4Programming the Transmitter and Receiver PairIf a Receiver unit does not successfully receive a Sensor Transmitter signal, use thefollowing procedure to program the Receiver to recognize the Sensor Transmitter. It ispossible to program a Receiver to receive signals from up to five Sensor Transmitters.This allows your Receiver to work with multiple sensors that may be used to interruptwatering.1. Press and hold the bypass switch on the Receiver button until the Green LED begins to blink rapidly, then release (Green LED will then begin to blink approximately onceper second).2. Activate the transmitter (by pushing the pin on the top of the Sensor Transmitter) until a clicking noise is heard from the receiver and the Red LED indicates “Watering Suspended”.3. If more than one click is heard, this means multiple transmitters are programmed intothis Receiver unit. The number of clicks will indicate how many of five locations havebeen programmed.4. To exit the Program Mode prior to activating the Transmitter, push and release theReceiver button. If the Transmitter is not activated for thirty (30) seconds after theReceiver is in Program Mode, the Receiver will return to Sensor Bypass Mode.Selecting a Location for the Sensor TransmitterSelect a mounting location where the rain-sensing head will receive direct rainfall. Makesure the head extends beyond the roof line, tree limbs, and any other obstructions. Installthe Sensor Transmitter in an area that receives as much rain and sunlight as the grass.Be sure to mount the sensor above spray fromsprinklers. Avoid mounting locations such as thoseshown in Illustration 6.Be sure that the sensor is located within range of thereceiver portion of the Wireless Rain Sensor system.See “Testing the System”section.3 WRS Wireless Rain and Freeze Sensor68Irrigation site conditions Rainfall setting• Dry climate/low humidity 1⁄8" to 1⁄4" (5mm to 10mm).• Infrequent, light rains• Sensor receives long periods of direct sunlight• Clay-type soils• Moist climate/high humidity 1⁄2" to 3⁄4" (15mm to 20mm).• Frequent, heavy rains• Sensor mounted in a mostly shady area• Sandy soilsSensor Transmitter Mounting and Low Power TestThis procedure allows a single installer to mount and test the Sensor Transmitter and Receiver forcommunication. See Illustration 7.The Low Power Test helps to ensure that the Wireless Sensor will continue to operate even under conditions of radio interference or weakening batteries.7
5. Functional Mode SummaryMonitorThe Monitor Mode is the normal mode of operation once the Transmitter and Receiverunit(s) have been installed. While the transmitter is in Monitor Mode, it will transmit asignal on a change of state (such as rain received) or at a fixed interval to confirm that acommunication link still exists. While the Receiver is in Monitor Mode, it will continuallylisten for signals from the Transmitter(s).ProgramThe Program Mode allows for a Transmitter to be programmed into a receiver to allowone-way communication. Each Receiver is capable of holding five (5) Transmitters in itsmemory.Press and hold the Bypass Switch on the Receiver until the Green LED begins to blinkrapidly, then release (Green LED will then begin to blink approximately once per second).To program the Transmitter into the Receiver, activate the Transmitter by holding down thepin at the top of the Sensor Transmitter until a clicking noise is heard from the Receiver.The number of clicks will indicate which one of five locations the Transmitter has beenprogrammed into. To exit the Program Mode prior to activating the Transmitter, push andrelease the Receiver bypass button. If the Transmitter is not activated for thirty (30) secondsonce the Receiver is in Program Mode, the Receiver will return to Sensor Bypass Mode.TestThe Test Mode allows for the installation site to be tested for signal reception. Once inTest Mode, the Transmitter will send a signal to the Receiver at one half the normal signalstrength. After sending the signal, the Transmitter will return to the Monitor Mode.Typically, this mode is only utilized during installation.Push and hold the Transmitter button for at least four (4) seconds but not longer than 14 seconds. The Transmitter will send a signal at the test mode signal strength. If theReceiver detects the signal, the Red LED will begin flashing for a duration of two and ahalf (2.5) minutes.BypassThe Bypass Mode allows for the irrigation system to operate independently from theWireless Rain Sensor. Regardless of whether the Wireless Rain Sensor is in the WateringSuspended state due to rain or freeze, the irrigation system will operate normally when inthe Bypass Mode. You can toggle back and forth between Bypass and Non-Bypass. ABypassed state with Watering Suspended will reset back to the Monitor Mode once thedisks dry out.Momentarily push and release the Receiver button to toggle between the Bypass andMonitor Modes. The Receiver is in Bypass Mode when the Green LED is solid. Note: If theReceiver button is depressed longer than four (4) seconds prior to releasing, the Receiverwill enter the Program Mode.WRS Wireless Rain and Freeze Sensor 6Set Vent RingThe vent ring determines “drying time”– the length of time the sensor turns off irrigationafter a rainfall. For most installations, set the vent ring to the fully open position.For some installations, such as sites where water pools afterrainfall, set the vent ring to a partially open position. This willshut down the irrigation system a little longer after a rain.To set the vent ring, turn the vent ring knob below the dialcap to the desired position, as shown in Illustration 9.3. Testing the SystemIt is recommended that you check the Transmitter and Receiver side by side prior tomounting the Sensor. It is also recommended that the Low Power Test be completedsuccessfully.Once installed, the completed system can be tested by turning on any controller irrigationzone, verifying that zone does come on, and then pressing down on the Rain Sensor pinlocated on the top of the dial cap. The irrigation system should stop watering within a fewseconds. If the system does not shut off, review the installation process to ensure thesystem is correctly installed.For assistance, call Rain Bird Technical Services at 800-247-3782 (USA and Canada only).4. MaintenanceThe Wireless Rain Sensor operates automatically and usually requires no regularmaintenance other than replacing the batteries in the Rain and Freeze Sensor(Transmitter) every three (3) years. Replace the batteries with two Panasonic CR2032 3V or equivalent replacement. Rain Bird Part Number 651009 - CR2032 lithium battery.In addition, the fibrous disks inside the Transmitter dial cap sometimes becomecontaminated with debris or insects. If this happens, use the following procedure to clean the Rain Sensor.1. Turn the dial cap to the 3⁄4" rainfall setting, as shown in Illustration 10.2. Press the tab labeled “Press”on the side of the sensor body. Then turn the dial capabout 1 and 1⁄4turns further to remove the cap from the sensor body.3. Remove the plunger and disks from the sensor body, and wash them in clean water.4. Reinstall the plunger and disks into the cap first, then screw the cap onto the sensorbody. Reset the rainfall setting to the desired position.5 WRS Wireless Rain and Freeze SensorA10Vent Ring9
WRS Wireless Rain and Freeze Sensor 8Receiver LED IndicationsNormal – ALL LEDs OFF Watering Suspended(Freeze or Rain) – RED SOLID LEDThe Red LED becomes solid if the Transmitter is activated while the Receiver is in theBypass or Monitor Mode.No Signal – YELLOW SOLID LEDThe Transmitter retransmits its current state several times a day. If the Receiver does notreceive two consecutive transmissions, then the Yellow LED becomes solid to indicate aloss of signal. The LED will turn off if the Transmitter becomes activated. Possible causesinclude low batteries, radio frequency interference, and physical obstacles.Sensor Bypass – GREEN SOLID LEDThe Green LED becomes solid if the Receiver is put into the Bypass Mode. Until a changeof state is received from the Transmitter or the user toggles the Receiver back to MonitorMode, the irrigation system will operate independently from the WRS.Test Mode – RED FLASHING LEDThe Red LED flashes when the Receiver has successfully received the test signal from theTransmitter. Once the test signal is received, the Receiver will continue to flash the RedLED for two and a half (2.5) minutes. The flashing LED will turn off if the Receiverchanges mode.Low Battery – YELLOW FLASHING LEDThe expected life of the battery is 3 years. The yellow LED begins to flash whenapproximately two and a half years of battery life have been depleted. Changing thebatteries will reset the low battery indicator.Program Mode – GREEN FLASHING LEDWhen the Bypass Switch on the Receiver is held for more than three seconds, the GreenLED will begin to blink rapidly. If the button is then released, the Receiver will enter theProgram Mode, which is indicated by the Green LED blinking approximately once persecond. The Green LED will turn off if the Receiver Bypass Switch is pushed again or theTransmitter becomes activated.7 WRS Wireless Rain and Freeze Sensor
Notes: Product SpecificationsTransmitterSize: 3 x 2 x 9 inches (8 x 5 x 23 mm) Batteries: 2 ea. #CR2032Frequency: 433.92 MHzReceiverSize: 2 3⁄4x 11⁄2x 9 inches (7 x 4 x 23 mm)Power: 24 VAC, 0.1 Amp, 125 VAC, 30 VDCRelay: SPDT, 3 Amp, 125 VAC, NO, NC, COMConnections: 24 VAC, 24 VAC, NO, NC, COMThis device complies with part 15 of the FCC Rules. Operation is subject to thefollowing two conditions:(1) This device may not cause harmful interference, and(2) This device must accept any interference received, including interference that maycause undesired operation.

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