Installation & Operation Manualmedia.wattswater.com/IOM_WR_Snow_Ice_090_091.pdf · Standing water in the socket may cause the snow melt system to be held on far longer than necessary,
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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.
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.
Install the Sensor and Cable----------------------------------------Whenthesnowmeltsurfaceisfinished,removetheplasticplugfromthesocketandfishthecablethroughtheconduituntilthereisonly6to�2"(�50to300mm)ofcablebetweenthesensorandconduit.Loopthisremainingextrawireinaloosecoilsoastonottwistit,andplaceit,andthesensorintothesocket.Securethesensortothesocketwiththefourscrewsprovided,makingsurethe“O”ringisinplaceandproperlyseated.
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.
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)
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
Hydronic System Electronic Controls and Thermostats Limited WarrantyWattsRadiant(theCompany)warrantsitshydronicsystemelectroniccontrolsandthermostats(theProduct)tobefreefromdefectsinmaterialsandworkmanshipundernormalusageforaperiodofoneyearfromthedocumenteddateofinstallationoftheProduct.Intheeventofdefectswithinthewarrantyperiod,theCompanywillreplacetheProductwithoutcharge.Thisremedyisthesoleandexclusiveremedyforbreachofwarranty.Thiswarrantyistransferabletosubsequentowners.