Watts 079 Installation guide

Installation & Operation Manual

 of4 ©203WattsRadiant

Floor Sensor 079

ReadthisManualBEFOREusingthisequipment.

Failuretoreadandfollowallsafetyanduseinformationcanresultin

personalinjury,propertydamage,ordamagetotheequipment.

KeepthisManualforfuturereference.

Itisyourresponsibilitytoensurethatthissensorissafelyinstalledaccordingtoall

applicablecodesandstandards.WattsRadiantisnotresponsiblefordamagesresulting

fromimproperinstallationand/ormaintenance.

TheFloorSensor079iscommonlyusedforfloortemperaturesensinginfloorheating

applications.Thethincasingallowsforretrofitinstallationbetweentilespacesifnecessary.

Thissensorisdesignedtoprovideathermostatwiththeabilitytomaintainaminimum

slabtemperature,orhelptolimitthemaximumslabtemperature.

Thin-Set or Thin-Pour Applications

Ifthefloorcovering

istobeinstalledovereitherathin-

setorthin-pourmaterialofsufficientdepth,thefloor

sensorcanbeplaceddirectlyintoeitherthethin-set

materialorthethin-pourmaterialandcoveredover.

Ensurethatthesensorislocatedinsuchaposition

thattheattachedwireisabletoreachtoasuitable

junctionlocation.Spliceswithinthethin-setorthin-pour

shouldbeavoidedtoensuretroublefreeoperation.Thesensorshouldbelocated

midway

betweentheheatingelementstoensureapropertemperaturereading.

Thin Floor Coverings (less than 3/8" (10 mm))

Ifathinfloorcoveringistobeinstalleddirectlytothe

subfloor,agroove/8"(4mm)wideby/6"(2mm)

deepcanbecutintothesurfaceofthesubfloorto

accommodatethewireforthesensor.Ensurethatthe

sensorislocatedinsuchapositionthattheattached

wireisabletoreachtoasuitablejunctionlocation.

Splicesunderthefloorcoveringshouldbeavoidedtoensuretroublefreeoperation.A

groove3/6"(5mm)wideby3/6"(5mm)deepby-3/4"(45mm)longshouldbecutto

accommodatethesensor.Thesensorshouldbelocatedmidwaybetweentheheating

elementstoensureapropertemperaturereading.

Thick Floor Coverings (greater than 3/8" (10 mm))

Ifathickfloorcoveringistobeinstalleddirectlytothesubfloor,agroove/8"(4mm)wide

by/6"(2mm)deepcanbecutintothebackoftheflooringmaterialtoaccommodatethe

wireforthesensor.Ensurethatthesensorislocatedinsuchapositionthattheattached

wireisabletoreachtoasuitablejunctionlocation.

Hardwood

Subfloor

Tiles

Thin-set

Electric

Cables

New Installations

IOM-WR-Floor

Sensor-079323 2of4

Splicesunderthefloorcoveringshouldbeavoidedto

ensuretroublefreeoperation.Agroove3/6"(5mm)wide

by3/6"(5mm)deepby-3/4"(45mm)longshouldbecut

toaccommodatethesensor.Thesensorshouldbelocated

midwaybetweentheheatingelementstoensureaproper

temperaturereading.

Ifitisnotpracticaltocutagrooveinthe

surfacecovering,followtheinstallationmethodusedforthinfloorcoverings.

Hardwood

Subfloor

Installing the Sensor to the Bottom of a Subfloor

Ifthesensoristobeinstalledtothebottomofasubfloor,cutapieceof"(25mm)thick

rigidinsulationintoa6"(50mm)by6"(50mm)square.

Agroove3/6"(5mm)wideby3/6"(5mm)deepby

-3/4"(45mm)longshouldbecutintotheinsulationto

accommodatethesensor.Placethesensorinthegroove

andsandwichthesensorbetweentheinsulationand

thesubfloor.Useasuitablefasteningmethodtoaffix

theinsulationtothesubfloor.

Subfloor

Tile Floor Coverings

IfaFloorSensor079istobeinstalledintoanexisting

tilefloorwithsufficientlylargegroutlines,thesensor

andwirecanbeinstalledinoneofthegroutlines

betweenthetiles.Selectalowtrafficareaofthefloor

thatismidwaybetweentheheatingelementsforthe

sensorlocation.Ensurethatthesensorislocated

insuchapositionthattheattachedwireisableto

reachtoasuitablejunctionlocation.Spliceswithin

thegroutshouldbeavoidedtoensuretroublefreeoperation.Removetheappropriate

groutlineandplacethesensorandwireinthefloor.Re-groutthearea.

Tiles

Thin-set

Subfloor

TheFloorSensor079issuppliedwith0’(3m)ofcable.Ifalongerlengthisrequired,24

AWGorlargerwirecanbesplicedontothetwowiresfromthesensor.Thesplicesshould

beproperlysolderedandprotectedinanaccessiblejunctionbox.Followthesensortesting

instructionsgiveninthisbrochureandthenconnectthewirestothecontrol.

Floor Sensor 079 Wiring

Floor Sensor 079 Testing

Retrofit Installations

Agoodqualitytestmetercapableofmeasuringupto5,000kΩ(kΩ=000Ω)isrequiredto

measurethesensorresistance.Inadditiontothis,theactualtemperaturemustbemeasured

witheitheragoodqualitydigitalthermometer,orifathermometerisnotavailable,asecond

sensorcanbeplacedalongsidetheonetobetestedandthereadingscompared.

Donotrunsensorwiresparalleltotelephoneorpowercables.Ifthesensorwiresare

locatedinanareawithstrongsourcesofelectromagneticinterference,shieldedcable

ortwistedpairshouldbeusedorthewirescanberuninagroundedmetalconduit.

Ifusingshieldedcable,theshieldwireshouldbeconnectedtotheComorComSen

terminalonthecontrolandnottoearthground.

 3of4 ©203WattsRadiant

Firstmeasurethefloortemperatureusingthethermometer.DisconnecttheSandCom

wiresfromthethermostat.Usinganelectricalmeter,measuretheresistanceoftheS

andComwiresatthethermostatlocation.Usingthetemperatureversusresistance

table,estimatethetemperaturemeasuredbythesensor.Thesensormeasurementand

thermometerreadingsshouldbeclose.Ifthetestmeterreadsaveryhighresistance,there

maybeabrokenwire,apoorwiringconnectionoradefectivesensor.Iftheresistanceis

verylow,thewiringmaybeshorted,theremaybemoistureinthesensororthesensor

maybedefective.Totestforadefectivesensor,measuretheresistancedirectlyatthe

sensorlocation.Oncethetesthasbeencompleted,reconnecttheSandComwiresto

thethermostat.

Temperature vs. Resistance Table

Temperature Resistance

°F °C

-0 -23 8,08

-5 -2 00,22

0 -8 85,362

5 -5 72,98

0 -2 62,465

5 -9 53,658

20 -7 46,28

25 -4 39,93

30 - 34,558

35 2 29,996

40 4 26,099

45 7 22,763

50 0 9,900

55 3 7,436

60 6 5,3

65 8 3,474

70 2 ,883

75 24 0,50

80 27 9,299

Temperature Resistance

°F °C

85 29 8,250

90 32 7,334

95 35 6,532

00 38 5,828

05 4 5,20

0 43 4,665

5 46 4,84

20 49 3,760

25 52 3,383

30 54 3,050

35 57 2,754

40 60 2,490

45 63 2,255

50 66 2,045

55 68 ,857

60 7 ,689

65 74 ,538

70 77 ,403

75 79 ,28

Technical Data

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

Floor Sensor 079, extra

Literature ES-WR-Floor_Sensor-079,IOM-WR-Floor_Sensor-079

Packagedweight 0.lb.(50g)

Dimensions

3/6”ODx-/2”(5mmODx38mm)

SensorMaterial

36stainlesssteel,0’(3m)24AWG,300voltPVCinsulatedZipcord

Approvals CSACUS

Operatingrange -58to22°F(-50to05°C)

Sensor

NTCthermistor,0kΩ@77°F(25°C±0.2°C)ß=3892

Do not apply voltage to a sensor at any time as damage to the sensor may result.

A Watts Water Technologies Company

USA:Springeld,MO•Tel.(800)276-249•Fax:(47)864-86•www.wattsradiant.com

Canada:Burlington,ONT.•Tel.(905)332-4090•Fax:(905)332-7068•www.watts.ca

IOM-WR-Floor

Hydronic System Electronic Controls and Thermostats Limited Warranty

WattsRadiant(theCompany)warrantsitshydronicsystemelectroniccontrolsandthermostats(theProduct)tobe

freefromdefectsinmaterialsandworkmanshipundernormalusageforaperiodofoneyearfromthedocumented

dateofinstallationoftheProduct.Intheeventofdefectswithinthewarrantyperiod,theCompanywillreplace

theProductwithoutcharge.Thisremedyisthesoleandexclusiveremedyforbreachofwarranty.Thiswarranty

istransferabletosubsequentowners.

UnderthisLimitedWarranty,theCompanywillprovidethefollowing:

Inordertomakeaclaim,youmust:

(a)ProvidetheCompanywithsufficientdetailsrelatingtothenatureofthedefect,theinstallation,thehistoryof

operation,andanyrepairsthatmayhavebeenmade.

(b)AttheCompany’sdiscretionandattheowner’sexpense,shiptheProducttotheCompanyortheCompany’s

localrepresentativeordistributor.

(c) ProvideproofthattheProductwasinstalledinaccordancewiththeapplicableProductInstallationManualand

anyspecialwrittendesignorinstallationguidelinesbytheCompanyforthisproject.

(d)ProvideproofthattheProductwasinstalledinaccordancewiththeNationalElectricalCode(NEC)orthe

CanadianElectricalCode(CEC),andallapplicablelocalbuildingandelectricalcodes.

(e) Providearetailsalesreceiptorproofofpurchase.

ThefollowingarenotcoveredbythisLimitedWarranty:

(a)Anyincidentalorconsequentialdamage,includinginconvenience,lossoftimeorlossofincome.

(b)

AnylaborormaterialsrequiredtorepairorreplacetheProductthatarenotauthorizedinwritingbytheCompany.

(c) Anylaborormaterialsrequiredtoremove,repairorreplacematerialsotherthantheProducts.

(d)AnyfreightordeliverycostsrelatedtotheProductoranyrelatedelectricalproducts.

WattsRadiantassumesnoresponsibilityunderthisLimitedWarrantyforanydamagetotheProductcausedby

anytradespeople,visitorsonthejobsite,ordamagecausedasaresultofpost-installationwork.ThisLimited

Warrantyshallbeinvalidatedbyanyabuse,misuse,misapplicationorimproperinstallationoftheProducts.The

staffattheCompanyisavailabletoansweranyquestionsregardingtheproperinstallationorapplicationofthe

Productatthistoll-freephonenumber:800-276-249(USA/International)or888-208-8927(Canada).Ifyouare

everindoubtaboutthecorrectinstallationproceduretofollow,oriftheProductappearstobedamaged,youmust

callusbeforeproceedingwiththeinstallationorproposedrepair.

WATTSRADIANTDISCLAIMSANYWARRANTYNOTPROVIDEDHEREIN,INCLUDINGANYIMPLIEDWARRANTY

OFMERCHANTABILITYORIMPLIEDWARRANTYOFFITNESSFORAPARTICULARPURPOSE.WATTS

RADIANTFURTHERDISCLAIMSANYRESPONSIBILITYFORSPECIAL,INDIRECT,SECONDARY,INCIDENTAL,

ORCONSEQUENTIALDAMAGESARISINGFROMOWNERSHIPORUSEOFTHISPRODUCT,INCLUDING

INCONVENIENCEORLOSSOFUSE.THEREARENOWARRANTIESWHICHEXTENDBEYONDTHEFACEOF

THISDOCUMENT.NOAGENTORREPRESENTATIVEOFWATTSRADIANTHASANYAUTHORITYTOEXTEND

ORMODIFYTHISWARRANTYUNLESSSUCHEXTENSIONORMODIFICATIONISMADEINWRITINGBYA

CORPORATEOFFICER.

Somestates/provincesdonotallowtheexclusionorlimitationofincidentalorconsequentialdamagesandsome

states/provincesdonotallowlimitationsonhowlongimpliedwarrantiesmaylast.Therefore,theabovelimitations

orexclusionsmaynotapplytoyou.Thiswarrantygivesyouspecificlegalrightsandyoumayalsohaveother

rights,whichvaryfromstatetostateorprovincetoprovince.SOFARASISCONSISTENTWITHAPPLICABLE

STATE/PROVINCIALLAW,ANYIMPLIEDWARRANTIESTHATMAYNOTBEDISCLAIMED,INCLUDINGIMPLIED

WARRANTIESOFMERCHANTABILITYORFITNESSFORAPARTICULARPURPOSEARELIMITEDINDURATION

TOONEYEARFROMTHEDATEOFMANUFACTURE.

Effective: May,203.ThiswarrantyappliestoallProductspurchasedafterthisdate.

Watts 079, 300153 Installation guide

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