Installation & Operation Manual

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Snow/Ice Sensor 090 In slab, w 65 ft cableSnow/Ice Sensor Socket 091

Introduction

Snow/Ice Sensor 090 FeaturesAutomaticsnow/icedetectionSlabtemperaturesensingLongwireincludedsoinfieldsplicingisnotnecessaryDesignedforlonglifeindrivewayandwalkwayinstallations65ft(20m)ofcable

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Snow/IceSensor090 Snow/IceSensorSocket09�

TheSnow/IceSensor090 isan ingroundsensorusedwithWattsRadiantsnowmeltingcontrols653and654,andsometekmarsnowmeltingcontrolstoautomaticallydetectsnoworiceonadrivewayorwalkway.Thesnow/icesensorhas65ft(20m)ofwire.Thisproductcanbeusedinapplicationsrangingfromresidentialdrivewaystocommercialbuildingfrontssuchasemergencyaccessentries.Thissensorallowstheabove

Snow/Ice Sensor Socket 091 FeaturesProvidesmountingsolutionforSnow/IceSensor090Includesmountingplate

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snowmeltingcontrolstoautomaticallyoperatethesnow/icemeltsystemonlywhensnoworiceispresent,whilealsoprovidingslabtemperaturefeedbacktothecontrol.TheSnow/IceSensorSocket09�isdesignedtoprovideamountingsolutionfortheSnow/IceSensor090.Itisintendedtobeinstalleddirectlyintoaconcreteslabwhentheslabispoured,sothatthe090canbeinstalledintoitoncedry.

3–7/16"(87 mm)

1–3/4"(45 mm)

3/16"(5 mm)

Cable length 65'(20 m)

Ø 7/8" (22 mm)

3–13/16"(97 mm)

3–1/8" (80 mm)3–1/2" (89 mm)

3/4" (19 mm)

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Checkthecontentsofthispackage.Ifanyofthecontentslistedaremissingordamaged,pleaserefertotheLimitedWarrantyandProductReturnProcedureonthebackofthisbrochureandcontactyourwholesalerorWattsRadiantsalesrepresentativeforassistance.Order number 81005661 includes:•OneSnow/IceSensor090with“O”ring•Four,#6-32x3/8"screws•Four,#4-40x7/�6"screws•OneInstallation&OperationManualOrder number 81003753 includes: •OneSnow/IceSensorSocket09�•Oneprotectiveplasticplug•Oneplasticmountingplate•Eight,#6-32x3/8"screws•OneInstallation&OperationManual

Location of the Sensor----------------------------------------------Thelocationofthesnow/icesensordetermineshowwellthesnowmeltdetectorrespondstoconditionsonthesnowmeltingslab.Thesensormeasuresthetemperatureoftheslabsurface,andwouldnormallybeinstalledinalocationthatisrepresentativeoftheaveragesurfacetemperatureandmoistureconditions.Theonlyexceptiontothispracticewouldbethoseapplicationswherethesensorisplacedinaspecificproblemareawhereiceorsnowoftenformsfirst.Theinstallershouldbecarefultoplacethesensorinalocationwhereitwillnotbeaffectedbyabnormaltemperatureconditionsthatmayoccurnearbuildings,hotairexhaustductsorotherheatsources,orsunnyareaswithinalargerslabarea.Aswellasreadingtemperatures,thesensoralsodetectssurfacewater.Theinstallershouldbecarefulnottoplacethesensorwherestandingwatercouldaccumulateonitssurface.Standingwaterinthesocketmaycausethesnowmeltsystemtobeheldonfarlongerthannecessary,asthecontrolwillbegettingasignalthatwaterispresenteventhoughtherestoftheslabsurfacemaybedry.Inaddition,thesensorshouldnotbeplacedinareaswheredrainageisconsiderablybetterthanthesurroundingarea.Thesnow/icesensorshouldnotbeinstalledinlocationswherevehiclespark,nearbuildingoverhangsorneartreessincethismayinterferewithsnowfallaccumulation.Ifindoubtaboutthelocationoftheseobstacles,asecondsparesocketandconduitcanbeinstalledinordertoprovideabackupsensorlocation.SomeWattsRadiantSnowMeltingControlsarecapableofdualsensing.Todetermineifthisfeatureisavailable,refertotheInstallation&OperationManualfortheSnowMeltingControl.

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ReadthisManualBEFOREusingthisequipment.Failuretoreadandfollowallsafetyanduseinformationcanresultinpersonalinjury,propertydamage,ordamagetotheequipment.KeepthisManualforfuturereference.

Itisyourresponsibilitytoensurethatthissensorissafelyinstalledaccordingtoallapplicablecodesandstandards.WattsRadiantisnotresponsiblefordamagesresultingfromimproperinstallationand/ormaintenance.

Step 1 - Check the Contents

Step 2 - Sensor Installation

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Vehicletireandpedestriantrafficcantrackwaterandcontaminantsontothesnowmeltarea.Ifthesnow/icesensorislocatedinthetrafficarea,snowmeltingwillbetriggeredbythepassingtraffic.Thismaybedesirableincommercialareaswhereexcessivetrafficcancausethesurfacetobecomeicy.Inresidentialinstallations,theamountoftrafficisusuallylimited,anditmaybedesirabletolocatethesnow/icesensorawayfromthetrafficarea.Thiswillreducethenumberofsnowmelteventsthatoccurandtherebyreducetheannualfuelconsumption.Locatethesensormidwaybetweentheheatingpipesorelements.

Conduit------------------------------------------------------------Placethesensorsocketatthechosenlocationandrunaconduitforthecablefromthesockettothesnowmeltingcontrol.Ifmorethan65’(20m)ofcableisrequiredtoreachthecontrol,runtheconduittoaweatherproofjunctionbox.Thesensorcableshouldberuninitsownconduitandnotincombinationwithhighvoltagewiring.Theconduitlengthfromthesensortothejunctionboxshouldbelessthanthe65’(20m)ofcablesuppliedwiththesnow/icesensor.Atthejunctionbox,additional�8AWG,5conductorcablecanbesplicedontoincreasethetotallengthto500’(�50m)fromthesensortocontrol.Avoidtyingtheconduittotherebarwithin6’(2m)ofthesocket.Thisallowstherebargridtomovewithoutdisturbingthepositionofthesocket.

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Thetopofthesnow/icesensorshouldbeflushandparalleltothatofthesnowmeltsurface.Whenthesensorisinstalledonaslopeddriveway,thesensormustbeinstallednearthelowestelevationoftheslope.Thisisrequiredsincethemeltingsnoworicerunoffwaterwilldraintowardthelowestpointonthedrivewayandkeepthisareawetforlongerperiodsoftime.

Sloped Surfaces----------------------------------------------------

Installing the Socket------------------------------------------------

Mounting Plate�. Drainagehole2. Socketscrewholes3. Rebarholes4. Rebartieholes5. Conduittieholes

3 3

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4 4

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Amountingplatehasbeenincludedtosimplifytheinstallationofthesensorsocket.Whenpossible,themountingplateshouldbelocateddirectlyontopofgravelinordertoprovidegooddrainage.Iftheslabismorethan4”thick,amoundofcrushedrockorastyrofoamorwoodenblockcanbeusedtoelevatethesocket.Aholemustbepunchedordrilledinthestyrofoamorwoodenblockinordertoprovidedrainage.Failure to provide adequate drainage under the socket may reduce the life expectancy of the snow / ice sensor.Themountingplatecanbefastenedtothegroundbydriving�/2"(�2.7mm)rebarthroughthefourholeslocatedoneachofthefourcornersandthentyingthemountingplatetotherebar.

IOM-WR-Snow_Ice-090_09��324 4of8

�. Cutfourpiecesofrebaratleast�2"(300mm)long.2. Drivetherebarintothegroundthrougheachofthemountingplaterebar

holes.Leaveapproximately2"(50mm)ofrebarabovetheground.3. Cutseveral�2"(300mm)piecesofsteelwire.4. Forma“U”shapeandpullwirethroughtherebartieholefromthebottom

tothetopside.5. Repeatbypullingthe“U”shapefromthetoptothebottomside.6. Repeat(4)and(5)foreachofthefourcorners.7. Crossthewire,thenwraparoundtherebar.8. Twistwireusingplierstotighten.

Themountingplatealsohasconduittieholestoallowacabletieorsteelwiretofastentheconduittothemountingplate.

Placing Concrete---------------------------------------------------Aplasticplugisprovidedwiththesockettopreventitfrombeingaccidentallyfilledwithconcrete.Theplasticplugisthesamethicknessasthesensorflange.Thisallowsthefinishedsurfaceoftheconcrete(asphalt,etc.)tobetroweledflushwiththeplug.Theplugmustbeinstalledpriortoplacingtheconcrete.Alsoensurethatthemountingplatedrainageholeremainsunpluggedoncetheconcretehascured.

Installing Brick Pavers----------------------------------------------Ifusingbrickpaversinsteadofconcrete,itisrecommendedtomortarsurroundingbrickpaverstothesideofthesocket.Thisensuresgoodthermalconductionfromthebrickpaverstothesocket.Thetopofthebrickpaversshouldbelevelwiththesocketwhentheplasticplugisinstalled.

Install the Sensor and Cable----------------------------------------Whenthesnowmeltsurfaceisfinished,removetheplasticplugfromthesocketandfishthecablethroughtheconduituntilthereisonly6to�2"(�50to300mm)ofcablebetweenthesensorandconduit.Loopthisremainingextrawireinaloosecoilsoastonottwistit,andplaceit,andthesensorintothesocket.Securethesensortothesocketwiththefourscrewsprovided,makingsurethe“O”ringisinplaceandproperlyseated.

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Placement in Existing 091 Socket -----------------------------------CurrentversionsoftheSnow/IceSocket09�use#6-32screws.Previousversionsofthe09�usedsmaller#4-40screws.Whenreplacingan090,bothsetsofscrewsareprovided.Itisrecommendedtotrythesmallerscrewsfirsttoavoidcrossthreading.

Salt and Brine Contamination---------------------------------------Theperformanceofthesnow/icesensorwaterdetectioncanbecompromisedwhenexposedtode-icingagentssuchasroadsalt,magnesiumchloride,orcalciumchloride.Thesecontaminantscanpermanentlydamagethesensor.Itisrecommendedtolocatethesensorawayfromareasexposedtothesedeicingagentswhenatallpossible.Locationstoavoidcouldincludetiretrackareasorareasclosetoacurbwheretravelingvehiclesmaysplashcontaminatedwaterontothesensor.

Maintenance-------------------------------------------------------TheSnow/IceSensorisinstalledinaharshenvironment.Accumulationofdirt,saltygrime,etc.,onitssurfacewillinhibitproperwaterdetection.Itshouldbecheckedonaregularbasisand,whennecessary,cleaned.Beforecleaning,thecontrolpowershouldbeshutofftopreventthecontrolfromenteringthesnowmeltmode.Next,useasoftbristlebrushandwarmsoapywatertocleanthesensorsurface.Donotuseasteelwirebrushasthiswilldamagethesensor.Useapapertoweltothoroughlydrythesensorsurface.Aftercleaning,re-powerthecontrol.

SlabBrn

ComBlkYel Blu Red

Snow Melting Control 653 or 654

Thesnow/icesensorcablehas5wires:Red,Black,Blue,Yellow,andBrown.ThewiresconnecttotherespectiveRed,Black,Blue,YellowandBrownterminalsontheSnowMeltingControl.

Step 3 - Electrical Connections

TheSnow/IceSensor090mustbeoperatedbyaWattsRadiantSnowMeltingControl653or654,oracompatibletekmarSnowMeltingControl.Operationofthesensorbyothercontrolsystemsmayresultinelectrolysisfailuresnotcoveredbythesensorwarranty.

IOM-WR-Snow_Ice-090_09��324 6of8

Whenperformingthesetests:Thesensorheadshouldbeinstalledintheslab.Thefivecablewiresatthecontrolshouldbedisconnected.Useagoodqualityelectricaltestingmeterwithanohmscalerangeof0to2,000,000Ohms.

Thesensorhastwo�0kOhmthermistors.Onereadsslabsurfacetemperature,andtheothercheckssensorheatertemperature.Ifthesensorhasbeendisconnectedfromthecontrolforanhourormore,thereadingsforboththermistorsshouldbeveryclose.Usingtheohmmeterandstandardtestingpractices,measuretheresistancebetween:

(a)theyellowandblacksensorwires(sensortemperature),and(b)thebrownandblacksensorwires(slabtemperature).

Thetablebelowliststheexpectedresistancevaluesatvarioussensortemperatures.Measuretheresistancebetweentheblueandblackwires.Whenthesensorsurfaceisdry,thereadingshouldbe2,000,000Ohms.Whenthesensorsurfaceiswetitshouldbebetween�0,000and300,000Ohms.Measuretheresistancebetweentheredandblackwiresoftheheatingelement.Thisreadingshouldbecloseto50Ohms.

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Temperature Resistance

°F °C-50 -46 490,8�3-45 -43 405,7�0-40 -40 336,606-35 -37 280,279-30 -34 234,�96-25 -32 �96,358-20 -29 �65,�80-�5 -26 �39,402-�0 -23 ��8,0�8-5 -2� �00,22�0 -�8 85,3625 -�5 72,9�8�0 -�2 62,465�5 -9 53,65820 -7 46,2�825 -4 39,9�3

Temperature Resistance

°F °C30 -� 34,55835 2 29,99640 4 26,09945 7 22,76350 �0 �9,90055 �3 �7,43660 �6 �5,3��65 �8 �3,47470 2� ��,88375 24 �0,50�80 27 9,29985 29 8,25090 32 7,33495 35 6,532�00 38 5,828�05 4� 5,2�0

Step 4 - Test the Sensor

Temperature vs. Resistance Table

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Snow / Ice Sensor 090 In slab, w 65 ft cableLiterature ES-WR-Snow_Ice-090,IOM-WR-Snow_Ice-090Packagedweight 4.4lbs(2000g)Dimensions �-3/4"Hx3-7/�6"OD(45mmHx87mmOD)

Sensormaterial Siliconbrass,65ft.(20m)5conductorstrandedwirewithpolyethylenejacket

Approvals CSACUSwithWattsRadiantSnowMeltingControls653and654

Operatingrange -30to�70°F(-34to77°C)

-Included4#4-40,7/�6"machined,stainlesssteelscrews4#6-32,3/8"flathead,slotted,stainlesssteelscrews

Snow / Ice Sensor Socket 091Literature ES-WR-Snow_Socket-09�,IOM-WR-Snow_Ice-090

Packagedweight �.5lbs(670g)

Socketmaterial Siliconbrass

Dimensions 3-�3/�6"Hx3-�/2"OD(97mmHx89mmOD)

Approvals CSACUSwithWattsRadiantSnow/IceSensor090

-Included Onepolyethyleneprotectivecap,onepolyethylenemountingplateandeight#6-32x3/8"screws

WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information: www.watts.com/prop65

Technical Data

A Watts Water Technologies Company

USA:Springfield,MO•Tel.(800)276-24�9•Fax:(4�7)864-8�6�•www.wattsradiant.comCanada:Burlington,ONT.•Tel.(905)332-4090•Fax:(905)332-7068•www.watts.ca

IOM-WR-Snow_Ice-090_09��324 ©20�3WattsRadiant

Hydronic System Electronic Controls and Thermostats Limited WarrantyWattsRadiant(theCompany)warrantsitshydronicsystemelectroniccontrolsandthermostats(theProduct)tobefreefromdefectsinmaterialsandworkmanshipundernormalusageforaperiodofoneyearfromthedocumenteddateofinstallationoftheProduct.Intheeventofdefectswithinthewarrantyperiod,theCompanywillreplacetheProductwithoutcharge.Thisremedyisthesoleandexclusiveremedyforbreachofwarranty.Thiswarrantyistransferabletosubsequentowners.

UnderthisLimitedWarranty,theCompanywillprovidethefollowing:Inordertomakeaclaim,youmust:

(a) ProvidetheCompanywithsufficientdetailsrelatingtothenatureofthedefect,theinstallation,thehistoryofoperation,andanyrepairsthatmayhavebeenmade.

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(c) ProvideproofthattheProductwasinstalledinaccordancewiththeapplicableProductInstallationManualandanyspecialwrittendesignorinstallationguidelinesbytheCompanyforthisproject.

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(e) Providearetailsalesreceiptorproofofpurchase.

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WattsRadiantassumesnoresponsibilityunderthisLimitedWarrantyforanydamagetotheProductcausedbyanytradespeople,visitorsonthejobsite,ordamagecausedasaresultofpost-installationwork.ThisLimitedWarrantyshallbeinvalidatedbyanyabuse,misuse,misapplicationorimproperinstallationoftheProducts.ThestaffattheCompanyisavailabletoansweranyquestionsregardingtheproperinstallationorapplicationoftheProductatthistoll-freephonenumber:800-276-24�9(USA/International)or888-208-8927(Canada).Ifyouareeverindoubtaboutthecorrectinstallationproceduretofollow,oriftheProductappearstobedamaged,youmustcallusbeforeproceedingwiththeinstallationorproposedrepair.

WATTSRADIANTDISCLAIMSANYWARRANTYNOTPROVIDEDHEREIN,INCLUDINGANYIMPLIEDWARRANTYOFMERCHANTABILITYORIMPLIEDWARRANTYOFFITNESSFORAPARTICULARPURPOSE.WATTSRADIANTFURTHERDISCLAIMSANYRESPONSIBILITYFORSPECIAL,INDIRECT,SECONDARY,INCIDENTAL,ORCONSEQUENTIALDAMAGESARISINGFROMOWNERSHIPORUSEOFTHISPRODUCT,INCLUDINGINCONVENIENCEORLOSSOFUSE.THEREARENOWARRANTIESWHICHEXTENDBEYONDTHEFACEOFTHISDOCUMENT.NOAGENTORREPRESENTATIVEOFWATTSRADIANTHASANYAUTHORITYTOEXTENDORMODIFYTHISWARRANTYUNLESSSUCHEXTENSIONORMODIFICATIONISMADEINWRITINGBYACORPORATEOFFICER.

Somestates/provincesdonotallowtheexclusionorlimitationofincidentalorconsequentialdamagesandsomestates/provincesdonotallowlimitationsonhowlongimpliedwarrantiesmaylast.Therefore,theabovelimitationsorexclusionsmaynotapplytoyou.Thiswarrantygivesyouspecificlegalrightsandyoumayalsohaveotherrights,whichvaryfromstatetostateorprovincetoprovince.SOFARASISCONSISTENTWITHAPPLICABLESTATE/PROVINCIALLAW,ANYIMPLIEDWARRANTIESTHATMAYNOTBEDISCLAIMED,INCLUDINGIMPLIEDWARRANTIESOFMERCHANTABILITYORFITNESSFORAPARTICULARPURPOSEARELIMITEDINDURATIONTOONEYEARFROMTHEDATEOFMANUFACTURE.

Effective: May�,20�3.ThiswarrantyappliestoallProductspurchasedafterthisdate.