Fluid Handling 6099B1500 Wireless Push Button User Manual

Fluid Handling LLC Wireless Push Button

User manual

Instruction ManualLaing Thermotech ACT-4wireless Potable Hot WaterRecirculation Kit
Table of ContentsIntroduction and Safety................................................................................................ 2Introduction............................................................................................................... 2Safety.......................................................................................................................... 2Safety terminology and symbols........................................................................2User safety.............................................................................................................3Environmental safety............................................................................................4Product Description...................................................................................................... 6General description..................................................................................................6Operational specifications.......................................................................................6Installation...................................................................................................................... 9Preinstallation............................................................................................................ 9Recommended installation....................................................................................10Install the pump...................................................................................................... 11Install the valve........................................................................................................12Commissioning, Startup, Operation, and Shutdown............................................. 15Thermostat controlled operation..........................................................................15Thermostat controlled operation Plus Timer...................................................... 15Optional Push-Button / Signal Repeater..............................................................17Maintenance................................................................................................................ 19Valve and pump inspection...................................................................................19Pairing after pump or valve replacement............................................................ 19Replace the batteries..............................................................................................19Return to service after shutdown of two weeks or more................................... 20Troubleshooting..........................................................................................................21LED codes................................................................................................................21Operation troubleshooting................................................................................... 21Table of ContentsLaing Thermotech ACT-4 wireless Potable Hot Water Recirculation Kit InstructionManual1
Introduction and SafetyIntroductionPurpose of this manualThe purpose of this manual is to provide necessary information for:• Installation• Operation• MaintenanceCAUTION:Read this manual carefully before installing and using the product. Improperuse of the product can cause personal injury and damage to property, and mayvoid the warranty.NOTICE:Save this manual for future reference, and keep it readily available at thelocation of the unit.SafetyWARNING:• The operator must be aware of safety precautions to prevent physicalinjury.• Any pressure-containing device can explode, rupture, or discharge itscontents if it is over-pressurized. Take all necessary measures to avoidover-pressurization.• Operating, installing, or maintaining the unit in any way that is not coveredin this manual could cause death, serious personal injury, or damage to theequipment. This includes any modification to the equipment or use of partsnot provided by Xylem. If there is a question regarding the intended use ofthe equipment, please contact a Xylem representative before proceeding.• Do not change the service application without the approval of anauthorized Xylem representative.CAUTION:You must observe the instructions contained in this manual. Failure to do socould result in physical injury, damage, or delays.Safety terminology and symbolsAbout safety messagesIt is extremely important that you read, understand, and follow the safetymessages and regulations carefully before handling the product. They arepublished to help prevent these hazards:• Personal accidents and health problems• Damage to the product• Product malfunctionIntroduction and Safety2 Laing Thermotech ACT-4 wireless Potable Hot Water Recirculation Kit InstructionManual
Hazard levelsHazard level IndicationDANGER: A hazardous situation which, if not avoided, willresult in death or serious injuryWARNING: A hazardous situation which, if not avoided, couldresult in death or serious injuryCAUTION: A hazardous situation which, if not avoided, couldresult in minor or moderate injuryNOTICE: • A potential situation which, if not avoided,could result in undesirable conditions• A practice not related to personal injuryHazard categoriesHazard categories can either fall under hazard levels or let specific symbolsreplace the ordinary hazard level symbols.Electrical hazards are indicated by the following specific symbol:Electrical Hazard: These are examples of other categories that can occur. They fall under theordinary hazard levels and may use complementing symbols:• Crush hazard• Cutting hazard• Arc flash hazardUser safetyGeneral safety rulesThese safety rules apply:• Always keep the work area clean.• Pay attention to the risks presented by gas and vapors in the work area.• Avoid all electrical dangers. Pay attention to the risks of electric shock orarc flash hazards.• Always bear in mind the risk of drowning, electrical accidents, and burninjuries.Safety equipmentUse safety equipment according to the company regulations. Use this safetyequipment within the work area:• Hard hat• Safety goggles, preferably with side shields• Protective shoesIntroduction and SafetyLaing Thermotech ACT-4 wireless Potable Hot Water Recirculation Kit InstructionManual3
• Protective gloves• Gas mask• Hearing protection• First-aid kit• Safety devicesNOTICE:Never operate a unit unless safety devices are installed. Also see specificinformation about safety devices in other chapters of this manual.Electrical connectionsElectrical connections must be made by certified electricians in compliance withall international, national, state, and local regulations. For more informationabout requirements, see sections dealing specifically with electricalconnections.Precautions before workObserve these safety precautions before you work with the product or are inconnection with the product:• Provide a suitable barrier around the work area, for example, a guard rail.• Make sure that all safety guards are in place and secure.• Make sure that you have a clear path of retreat.• Make sure that the product cannot roll or fall over and injure people ordamage property.• Make sure that the lifting equipment is in good condition.• Use a lifting harness, a safety line, and a breathing device as required.• Allow all system and pump components to cool before you handle them.• Make sure that the product has been thoroughly cleaned.• Disconnect and lock out power before you service the pump.• Check the explosion risk before you weld or use electric hand tools.Wash the skin and eyesFollow these procedures for chemicals or hazardous fluids that have comeinto contact with your eyes or your skin:Condition ActionChemicals or hazardousfluids in eyes 1. Hold your eyelids apart forcibly with your fingers.2. Rinse the eyes with eyewash or running water for at least15 minutes.3. Seek medical attention.Chemicals or hazardousfluids on skin 1. Remove contaminated clothing.2. Wash the skin with soap and water for at least 1 minute.3. Seek medical attention, if necessary.Environmental safetyThe work areaAlways keep the station clean.Waste and emissions regulationsObserve these safety regulations regarding waste and emissions:• Appropriately dispose of all waste.• Handle and dispose of the processed liquid in compliance with applicableenvironmental regulations.Introduction and Safety4 Laing Thermotech ACT-4 wireless Potable Hot Water Recirculation Kit InstructionManual
• Clean up all spills in accordance with safety and environmentalprocedures.• Report all environmental emissions to the appropriate authorities.WARNING:Radiation Hazard. Do NOT send the product to Xylem if it has been exposed toany nuclear radiation.Electrical installationFor electrical installation recycling requirements, consult your local electricutility.Recycling guidelinesAlways follow local laws and regulations regarding recycling.FCC Statement (United States Only)This device complies with Part 15 of the FCC Rules. Operation is subject to thefollowing two conditions:1. this device may not cause harmful interference and2. this device must accept any interference received, including interferencethat may cause undesired operation.This equipment has been tested and found to comply with the limits for a ClassB digital device, pursuant to Part 15 of the FCC Rules. These limits are designedto provide reasonable protection against harmful interference in a residentialinstallation. This equipment generates, uses and can radiate radio frequencyenergy and, if not installed and used in accordance with the instructions, maycause harmful interference to radio communications. However, there is noguarantee that interference will not occur in a particular installation. If thisequipment does cause harmful interference to radio or television reception,which can be determined by turning the equipment off and on, the user isencouraged to try to correct the interference by one or more of the followingmeasures:• Reorient or relocate the receiving antenna.• Increase the separation between the equipment and receiver.• Consult the dealer or an experienced radio/TV technician for help.Changes or modifications not expressly approved by the manufacturerresponsible for compliance could void the user’s authority to operate theequipment.CertificationsCSA Certified: NSF/ANSI-372 CompliantIndustry Canada RSS Statement (Canada Only)This device complies with Industry Canada licence-exempt RSS standard(s).Operation is subject to the following two conditions: (1) this device may notcause interference, and (2) this device must accept any interference, includinginterference that may cause undesired operation of the device.Introduction and SafetyLaing Thermotech ACT-4 wireless Potable Hot Water Recirculation Kit InstructionManual5
Product DescriptionGeneral descriptionThe ACT-4 wireless is a potable hot water recirculation kit for use in new andretrofit domestic hot water systems. The kit helps to:• Improve comfort through instant hot water• Save energy• Conserve waterParts included in kit• Pump with a built-in timer• 6 ft (1.8 m) power cord• Under-sink mixing valve with transmitter/receiver• Two 1.5V LR06 AA Batteries• Valve mounting bracket• Two screws• Installation, Operation, and Maintenance Manual (IOM)Additional parts needed for install• (2) 3/8" Compression x 1/2" stainless steel flex hoses• (2) 1/2" x 1/2" stainless steel flex hoses (optional)• Hand tools including various wrenches and #0 and #2 Phillips Headscrewdrivers• (1) 3/4" Isolation shut-off valve and associated adapters and nipples(optional - if pump desired to be isolated for maintenance)Verify the type of 1/2" connection that may be required for the stainless steelflex hoses: Compression or NPT/IPS.Operational specificationsOperational limitsPump and valveOperating medium WaterMaximum working pressure 145 PSI (10 bar)Minimum operating differential pressure (Valve) 1.6 PSI (0.11 bar)Maximum water temperature 203°F (95°C)Motor 115 V, 1 PH, 60 Hz, 20 Watts input, 0.3 Amps,4800 RPMOperating noise level 30 dBBattery power 1.5 V eachEstimated battery life 2 YearsMaximum operating range 150 ft (45 m)Product Description6 Laing Thermotech ACT-4 wireless Potable Hot Water Recirculation Kit InstructionManual
WARNING:Do NOT exceed the maximum working pressure of the pump. This informationis listed on the nameplate of the pump.WARNING:California Proposition 65 warning! This product contains chemicals known tothe state of California to cause cancer and birth defects or other reproductiveharm.How the system worksThe ACT–4 wireless potable hot water recirculation kit features a factory pairedpump and mixing valve that wirelessly communicate temperature data andoperational status between each other. The ACT–4 wireless pump with built-intimer is installed on the supply side of the hot water source, as presented below.The paired mixing valve is installed under the sink farthest from the hot watersource. A temperature sensor within the valve detects the water temperatureand wirelessly transmits this data to the pump.The desired water temperature at the mixing valve is set remotely with thethermostat dial on the pump. When the water temperature sensed at the valveis below the desired setting, a signal is sent to the ACT–4 wireless pump tobegin circulating hot water throughout the system. The mixing feature of thevalve tempers the cold water at the faucet or tap, providing instant hot water atthis location and so satisfying the need for hot water at all upstream wateroutlets. When the temperature requirement at the valve has been satisfied, asignal is sent to turn off the pump. This system prevents continuous running andsaves energy.For more energy savings, the ACT–4 wireless pump can be set for TimerOperation to run only during the time periods when hot water is most frequentlyrequired.An optional push-button / signal repeater device is available to provide instanthot water with a touch of a button. Pressing the push-button will activate thepump and begin circulating hot water throughout the system, outside of the setTimer Operation, until the desired temperature is met at the valve. Acting in itssecondary function as a signal repeater, this device will also extend theoperational range of the pump and valve and aid in the transmission of databetween the two devices where necessary.The instant hot water delivery with the ACT–4 wireless potable hot waterrecirculation kit saves water and time, while improving comfort, as water doesnot need to run continuously while waiting for it to warm up.Product DescriptionLaing Thermotech ACT-4 wireless Potable Hot Water Recirculation Kit InstructionManual7
123457689101. ACT-4 wireless pump2. Hot water source3. Hot water4. Cold water5. Hot water flex hose6. cold water flex hose7. Hot water supply hose8. Cold water supply hose9. ACT-4 wireless mixing valve10. Optional push-button / repeaterProduct Description8 Laing Thermotech ACT-4 wireless Potable Hot Water Recirculation Kit InstructionManual
InstallationPreinstallationCAUTION:All work must be performed by qualified personnel trained in the properapplication, installation, and maintenance of plumbing, steam and electricalequipment or systems in accordance with all applicable codes and regulations.The pump and valve as received in this kit are factory paired and wirelesslycommunicate water temperature and pump status with each other.Before installation of the pump and valve, complete the following:• Shut off water supply.• Turn off hot water source.• Drain the lines.• Allow the system to cool to a safe handling temperature, below 100°F(38°C) and a zero pressure condition.InstallationLaing Thermotech ACT-4 wireless Potable Hot Water Recirculation Kit InstructionManual9
Recommended installation123456781. Cold water supply2. 3/4” NPT isolation valve3. ACT4 wireless pumpInstallation10 Laing Thermotech ACT-4 wireless Potable Hot Water Recirculation Kit InstructionManual
4. 3/4” NPT male adapter, if required5. 3/4” NPT isolation valve6. Hot water source7. Hot water8. Flexible supply lineInstall the pump1. Remove the motor and timer unit, O-ring, and insert from the pumphousing. Set these items aside.1231. Pump housing2. Pump o-ring3. Pump insert2. Connect the union end of the pump housing to the 3/4" NPT male inlet ofthe hot water source, or male adapter and isolation valve connected to thehot water source.Make sure that the arrow on the pump housing is properly oriented in thedirection of the supply water flow.3. Connect flexible supply line to the 3/4” NPT male threads of the pumphousing.Do not twist or excessively bend the hose. Replace the flexible hose with ashorter length if necessary. Use PTFE tape or pipe compound if necessary.4. Reattach the motor and timer unit, the insert, and the O-ring to the pumphousing.InstallationLaing Thermotech ACT-4 wireless Potable Hot Water Recirculation Kit InstructionManual11
5. Orient the pump so that the timer is accessible. The timer should never bepositioned in any orientation above the pump housing.6. Make sure that the screw ring that attaches the motor to the pump issecurely hand tightened. Do not attempt to further rotate the pump timeror the pump may be damaged.Over-tightening the pump screw ring can cause damage to the pump. Donot use pipe compound or plumber's putty on the screw ring.7. Turn on the water supply to the hot water source and verify that there areno leaks at any connections.8. Turn on the faucet/taps or shower farthest from the hot water source untilthere is a steady stream of water with no sputter or evidence of air in thelines.9. Plug the pump cord into the wall outlet and start the system. In the event ofa disruption in the power supply, the ACT–4 wireless pump will resumecommunication with the paired mixing valve.10. Open the timer cover. Rotate the dial clockwise until the current time isaligned with the pointer at the top (12 o'clock position) of the dial.See Thermostat Controlled Operation PLUS Timer section below.Install the valveInstallation12 Laing Thermotech ACT-4 wireless Potable Hot Water Recirculation Kit InstructionManual
1. Prepare the installation site, which is the faucet/tap farthest from the hotwater source.2. Close the hot and cold water riser shutoff valves and open the hot and coldwater faucets/taps to relieve the water pressure. Close the water faucets/taps.In some older homes, the riser shutoff valves may be difficult to shut offcompletely. If so, turn off the water at the main water inlet valve to thehouse.3. Remove the existing flexible line connections to the hot and cold waterfaucet/tap threaded nipples.Use a bucket to collect any excess drainage.a) If necessary, replace existing flexible hoses with new stainless steelbraided flexible hoses in the lengths required.4. Screw on the two existing 1/2” hose connections to the corresponding hotand cold sides of the valve housing, denoted as “H” and “C” respectively.Grip the valve only by the brass hex feature during assembly.Be careful not to kink the existing hose lines while bending, which canprevent adequate flow and/or cause the valves to break.a) Inspect the rubber washers in the hose connections to ensure thatthey are in reusable condition. If not, replace.5. Screw the 3/8" compression end of the purchased flexible hoses to the3/8" connections on the valve. Screw the 1/2" ends of these same twohoses to the underside of the hot and cold water faucet/tap respectively.a) Make sure to match the hot and cold sides marked on the valve withthe corresponding faucet/tap.b) Make sure that the hot side connection is attached to the hot waterfaucet/tap and the cold water side connection is attached to the coldwater faucet/tapc) Make sure that the hoses are long enough to allow the valve to bepositioned as planned.6. If desired, fasten the valve to the wall or vanity cabinet using the optionalmounting bracket and screws that are provided in the kit.InstallationLaing Thermotech ACT-4 wireless Potable Hot Water Recirculation Kit InstructionManual13
7. Open the faucet/tap and hot and cold water riser shutoff valves to purgeany air entrained in the valve or hoses and to insure there are no leaks atany connections.8. Remove the locking screw from the battery compartment cover on thevalve. Insert the batteries in their proper orientation into the compartmenton the valve. Be sure to match the positive (+) and negative (-) ends of thebatteries with the corresponding polarity symbols on the bottom of thehousing. Installing one battery in reverse will result in improper systemoperation. Return the locking screw to its proper position when thebatteries have been installed.CAUTION:Short circuit hazard. Improper battery installation maycause personal injury or property damage due to shortcircuit or battery leakage.This installation method applies to most situations where faucets/taps areconnected to hot and cold water supply lines with braided flexible hose/shut-offvalve arrangements. If the under-sink arrangement is different, for example therisers are hard copper or plastic, then other parts not listed here may berequired for the installation.Installation14 Laing Thermotech ACT-4 wireless Potable Hot Water Recirculation Kit InstructionManual
Commissioning, Startup,Operation, and ShutdownThermostat controlled operationThe valve and pump are ready to communicate with each other out of the box.The pump comes with an adjustable temperature feature. This feature iscontrolled by the thermostat dial just above the timer housing on the body ofthe pump and may be set to activate between 86°F (30°C) and 95°F (35°C). Thistemperature range represents the desired water temperature to be sensed atthe remotely set under-sink mixing valve.• Slide the switch on the timer housing to the “ON” position.In the “ON” position, the pump runs automatically whenever the built-intemperature sensor in the valve senses the need for hot water at the under-sinkvalve. In the “OFF” position, the pump does not operate at any time. In eitherinstance, the LED light on the thermostat knob will remain steady.The pump will most likely start running immediately and turn off after a fewminutes when hot water reaches the faucet/tap. The pump continues cycling onand off as required during the programmed sequence of operation. (Do not beconcerned if the pump does not begin to run immediately after the pump isplugged in, or at times throughout normal operation. This just means that thereis already hot water at the hot water faucet/tap. The pump turns onautomatically when the hot water line cools down.)Thermostat controlled operation Plus Timer12341. Set current time here2. Pump runs when valve calls for hot water3. Pump runs only during the desired times when valve calls for hot water4. Pump does not runCommissioning, Startup, Operation, and ShutdownLaing Thermotech ACT-4 wireless Potable Hot Water Recirculation Kit InstructionManual15
1. Open the timer cover with a small flat head screwdriver. Verify that currenttime setting is correct. If not, rotate the dial clockwise until the correct timeis aligned with the pointer at the top (12 o'clock position) of the dial.2. Automatic Operation: Pull the tabs out on the timer for the desiredoperating time. For example, if the desired operating time is 9:00 AM to11:00 AM, pull out all tabs from 9 through 11.Commissioning, Startup, Operation, and Shutdown16 Laing Thermotech ACT-4 wireless Potable Hot Water Recirculation Kit InstructionManual
11. Pull tabs out for desired timeThe timer can be set for multiple operating periods of time, in 1/2 hourincrements.3. Slide the switch bar to the clock symbol.Optional Push-Button / Signal RepeaterThe pump and valve as received in this kit are factory paired and wirelesslycommunicate water temperature and pump status with each other. An optionalpush-button device is available to provide instant hot water regardless of thecirculator pump’s timer setting. This device also works as a signal repeater,extending the operational range between the pump and valve.Commissioning, Startup, Operation, and ShutdownLaing Thermotech ACT-4 wireless Potable Hot Water Recirculation Kit InstructionManual17
Push-Button OperationFollow this procedure when you add the push-button device to your system andpair it with your ACT4 wireless pump and valve:1. Begin the pairing process by opening the timer cover on the pump andperforming the following sequence with the pump timer switch:a) Slide the switch from the “ON” position to the “OFF” position and waittwo (2) seconds.b) Slide the switch to the “ON” position and wait two (2) seconds.c) Slide the switch to the “OFF” position and wait two (2) seconds.d) Return the switch to the “ON” position. A series of rapid flashes fromthe LED light in the thermostat knob of the pump will indicate that ithas entered pairing mode. The pump will remain in pairing mode forten (10) minutes.2. Power up the push-button / signal repeater device to be paired byplugging it directly into a nearby outlet. While plugging the push-buttondevice into the outlet, depress and hold the push-button. Keep the push-button depressed for five (5) additional seconds. Pairing mode on thepush-button / signal repeater is also indicated by a rapid series of flashesfrom its own LED light and will remain in pairing mode until itcommunicates and pairs with the pump.3. Upon successful pairing, the LED light in the thermostat knob of the pumpwill produce a steady glow, indicating that the pump is running or is onstand-by. The LED light in the push-button device will produce a seldomflash when the system is on stand-by or a steady glow when the pump isrunning.The push-button is now ready for service. Once the push-button / signalrepeater has been paired with the pump, it can be relocated to the desiredoutlet without having to be re-paired.The pump is capable of pairing with only two devices: the valve and theoptional push-button / signal repeater.Signal Repeater OperationWhen used as a signal repeater, the device will extend the operational range ofthe ACT4 wireless hot water recirculation kit beyond the normally specifieddistance. Device pairing is not required when used as a signal repeater. It willaid in the transmission of data between the pump and valve in environmentswhere building construction or other factors may interfere with ongoingcommunication.When used as a signal repeater, the device should be installed at an outlet at anintermediate location between the pump and valve.Commissioning, Startup, Operation, and Shutdown18 Laing Thermotech ACT-4 wireless Potable Hot Water Recirculation Kit InstructionManual
MaintenanceValve and pump inspectionPeriodically inspect the valve or pump for signs of leakage or corrosion.WARNING:Risk for property damage, serious personal injury or death. You must replacethe valve or pump if corrosion or leakage is found.Pairing after pump or valve replacementIf either the pump or the valve is replaced, device pairing is required. To pairthe devices, follow this procedure:1. Power up the valve by inserting the batteries.If the valve is already in operation, remove and reinsert the batteries. If thevalve is being replaced, remove the batteries from the old valve beforepairing the new replacement with the pump. It is recommended to use afresh set of batteries in the new valve being installed.a) If a push-button / signal repeater device requires pairing, plug itdirectly into the desired outlet.2. Open the timer cover on the pump. Slide the switch from the “ON” positionto the “OFF” position.3. Wait two (2) seconds and slide the switch from the “OFF” position to the“ON” position.4. Wait two (2) seconds and slide the switch to the “OFF” position.5. Wait two (2) seconds and return the switch to the “ON” position.When the device is successfully paired, the LED in the thermostat knob is lit. Thepump is now ready for service.Replace the batteriesThe system is designed to provide effective communication between the pumpand valve for approximately two (2) years after system start-up or batteryreplacement when using two (2) 1.5 V LR06 alkaline batteries. When usingrechargeable batteries, it is recommended that they have a minimum 2500 mAhcapacity.Do not mix new and old batteries or other makes of batteries, such as alkalinewith lithium-ion. The different attributes can negatively affect the systemperformance or cause the batteries to leak fluid, overheat, or explode.When new batteries are inserted into the valve, the valve will resumecommunication with the pump.CAUTION:Risk of property damage or personal injury. You must replace the valve if batteryleakage is found.MaintenanceLaing Thermotech ACT-4 wireless Potable Hot Water Recirculation Kit InstructionManual19
Return to service after shutdown of two weeks or moreYou may choose to turn the system off (slide the pump timer switch to the “OFF”position) as there is no need to maintain hot water in the supply line when noone is home. Before turning the system back on, follow these instructions:1. Open the faucets/taps at the sink where the system is installed. Keep themopen until all air is purged and the water flows smoothly.2. Slide the pump switch back to either the "ON" position or the clockposition for Timer Operation.Maintenance20 Laing Thermotech ACT-4 wireless Potable Hot Water Recirculation Kit InstructionManual
TroubleshootingLED codesPump LED sequence code ExplanationNo light Pump is off — no powerSteady light on LED Pump is running or on stand-byOne short and one long flash Low input voltage to pumpTwo short and one long flash Communication is lost between pump and valveThree short and one long flash Pump is overheatedFour short and one long flash Pump is overloadedFive short and one long flash Blocked rotor inside pumpSix short and one long flash Low battery voltage at the valveShort fast flashes Pump is in pairing modeRepeater / push-button LED sequence code ExplanationSteady light System is runningSeldom flashes System is runningShort fast flashes Push-button / signal repeater is in pairing modeOperation troubleshootingSymptom Cause RemedyPump does not turn on Timer slide switch is set to “OFF”position or timer clock is notprogrammed to allow operation.Set the slide switch to the “ON”position or program the timerclock.Water at the valve is already atthe set temperature and does notrequire pump operation.Pump will turn on when thewater at the valve cools. Verifythe temperature setting on thepump.Outlet has no power Check that there is power at theoutlet. Make sure the outlet thatthe pump is plugged into is notcontrolled by a wall switch.GFCI is tripped. Verify the “TEST” and “RESET” ofthe GFCI outlet that the pump isplugged into.TroubleshootingLaing Thermotech ACT-4 wireless Potable Hot Water Recirculation Kit InstructionManual21
Symptom Cause RemedyPump is noisy Air in the system Turn off the ecocirc pump. Turnon the hot and cold faucets/tapsuntil all air is purged from thesystem.Foreign matter in the rotor cavity Unplug pump and shut off watersupply. Open faucets/taps anddrain water from the piping.Loosen the screw ring to separatemotor from the pump housingand check for foreign matter.Rotor does not seat properly. Ensure the rotor is properly seton the motor bearing by pushingdown on the rotor.Water hammer that results fromthe closure of the built-in checkvalve.Install water hammer arresters onthe hot and cold lines.Hot water is not instantlyavailable at all faucets/taps Faucets/taps are branched offfrom the main hot water supplyline.Hot water will take longer toreach branched faucets/taps.Water temperature at the valve isat or above the set temperature. Verify the temperature setting atthe pump.Hot water source not producinghot water. Verify temperature setting at hotwater source.Verify hot water source operation.Distance between the pump andvalve is greater than 150 ft (45m).Install a signal repeater / push-button to assist communicationbetween pump and valve.Water at faucets/tap is too hot The temperature setting on thehot water source is too high. Adjust temperature setting onhot water source.Troubleshooting22 Laing Thermotech ACT-4 wireless Potable Hot Water Recirculation Kit InstructionManual
Symptom Cause RemedyPump is overheated Hot water source is generatingtoo much heat. Adjust temperature setting onhot water source.Ambient temperature is too hot. Make sure the pump and hotwater source are properlyventilated to allow cooling.Pump is overloaded. See possible causes andremedies below.Communication is lost betweenpump and valve Batteries are dead/Low batteryvoltage. Replace batteries.Incorrect battery orientation. Verify correct battery orientation.Distance between the pump andvalve is greater than 150 ft (45m)or disruptive media interfereswith communication.Install a push-button / signalrepeater to assist communicationbetween pump and valvePump is overloaded Improper power to pump outlet Consult electrician to determinecause.Pump rotor is not freely rotating. 1. Unplug pump and shut offwater supply.2. Open faucets/taps anddrain water from thepiping.3. Loosen the screw ring toseparate motor from thepump housing.4. Verify that the pump rotoris seated properly andthere is no debris.5. Rotate the pump rotorcounter-clockwise for threeor four revolutions to makesure it can freely spin.Blocked rotor inside pump Foreign matter in the rotor cavity 1. Unplug pump and shut offwater supply.2. Open faucets/taps anddrain water from thepiping.3. Loosen the screw ring toseparate motor from thepump housing and checkfor foreign matter.Low input voltage to pump Improper power to pump outlet Consult electrician to determinecause.WARNING:Extreme temperature hazard. Water temperature above 125°F (51°C) can causesevere burns or scalding instantly.TroubleshootingLaing Thermotech ACT-4 wireless Potable Hot Water Recirculation Kit InstructionManual23
Xylem |’zīləm|1) The tissue in plants that brings water upward from the roots2) A leading global water technology companyWe're 12,000 people unified in a common purpose: creating innovativesolutions to meet our world's water needs. Developing new technologies thatwill improve the way water is used, conserved, and re-used in the future iscentral to our work. We move, treat, analyze, and return water to theenvironment, and we help people use water efficiently, in their homes,buildings, factories and farms. In more than 150 countries, we have strong,long-standing relationships with customers who know us for our powerfulcombination of leading product brands and applications expertise, backed bya legacy of innovation.For more information on how Xylem can help you, go to xyleminc.comXylem Inc.3873 Willow, Suite #104Fresno, CA 93725Tel: 1-559-265-4730Fax: 1-800-453-4730http://unitedstates.xylemappliedwater.com/brands/laing-thermotech/Visit our Web site for the latestversion of this document and moreinformationThe original instruction is in English.All non-English instructions aretranslations of the originalinstruction.© 2013 Xylem IncLaing Thermotech is a trademark ofXylem Inc or one of its subsidiaries.671075145_B

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