installation & operation manual - floor heating & snow …€¦ ·...

Installation & Operation Manual

of56 ©203WattsRadiant

Snow Melting Control 654

FeaturesAutomaticSnow/IceDetectionSupportsBothInslab&RetrofitAerialSensorsManualStartWithTimerProgrammableScheduletekmarNet®CommunicationCompatibleWarmWeatherShutDownColdWeatherCutOutIdlingSnowMeltZoningWithPriorityTandemSnow/IceDetectionSlabProtectionStormEconoMeltManualOverrideSnowMeltZoneTrackingScenesAwayKeyExercisingAlertOutput

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IntroductionTheSnowMeltingControl654isdesignedtooperateelectricorhydronicequipmenttomeltsnoworicefromadriveway,loadingdock,sidewalk,patio,helipadorcarwashbay.Thesnowmeltsurfacetemperatureiscontrolledusingslaboutdoorresettoreduceoperatingenergycosts.The654providesautomaticstartandstopwhenusedwiththeSnow/IceSensor090.AutomaticstartwithatimedstopisavailablewhenusedwiththeSnowSensor095.The654canoperateadedicatedhydronicboileroramixingdevice.Isolationrelaysarerequiredtooperatelinevoltagepumps.ElectricsystemsrequireaseparateGFCIandelectricalrelaycontactor.

IOM-WR-Snow_Melting_Control-654328 2of56

ImportantSafetyInformation.............................................3Applications.......................................................................4

SingleZonewithBoiler.................................................. 4SingleZonewithBoiler&TandemSnow/IceSensors........6SingleZonewithModulatingSteamValve.................... 8Multi-ZoneCarWash.................................................... 0Multi-ZoneElectric........................................................ 2

Installation........................................................................4Preparation................................................................... 4PhysicalDimensions.................................................... 4InstallationLocation...................................................... 4Rough-InWiring............................................................ 4SizingtheTransformer................................................. 5ControlWiring............................................................... 5SensorWiring............................................................... 7TestingtheSensorWiring............................................ 8TestingtheControlWiring............................................ 8ManualOverride-MaximumHeat............................... 9ManualOverride-Test................................................. 9ManualOverride-Purge.............................................. 9ManualOverride-Off................................................... 9

SwitchSettings.................................................................9UserInterface...................................................................20

Display.......................................................................... 20OperationField............................................................. 20StatusField................................................................... 20Symbols........................................................................ 20

ProgrammableSettings....................................................2ProgrammingMenus.................................................... 2AccessLevelsandAccessLevelLock........................ 2ViewMenu.................................................................... 22SetTempMenu............................................................ 24TimeMenu.................................................................... 25ScheduleMenu............................................................ 26DisplayMenu................................................................ 27SceneMenu................................................................. 27MonitorMenu................................................................ 28ToolboxMenu............................................................... 29OverrideMenu.............................................................. 30SystemMenu................................................................ 3BoilerMenu.................................................................. 32MixMenu...................................................................... 33tekmarNet®Menu......................................................... 34

SequenceofOperation................................................... 35SnowMeltingOverview................................................ 35SlabTemperatureControl............................................ 35MeltOperation.............................................................. 35Melt-ManualStartandTimedStop............................ 36Melt-AutomaticStartandStop................................... 36Melt-EconoMelt........................................................... 37Melt-AutomaticStartandTimedStop........................ 37Melt-TrackedStartandStop...................................... 38Melt-ScheduledStartandStop.................................. 38AdditionalMeltingTime................................................ 39IdleOperation............................................................... 39StormOperation........................................................... 39WarmWeatherShutDown........................................... 40ColdWeatherCutOut.................................................. 40AwayScene.................................................................. 40ProgrammableSchedules............................................ 4TimeClock.................................................................... 4SnowMeltZonesandPriority...................................... 4SlabProtection............................................................. 43ApplicationModes........................................................ 43ElectricOperation......................................................... 43PulseWidthModulationOperation.............................. 43BoilerOperation........................................................... 43MixingOperation.......................................................... 45PipingofVariableSpeedInjectionSystems................ 46DesignProcedure......................................................... 47TandemSnow/IceDetection...................................... 48Exercising..................................................................... 48AlertRelay.................................................................... 48PumpPostPurge.......................................................... 48MeltandStormGroups................................................ 49UserSwitchSetup........................................................ 49

Troubleshooting................................................................50ErrorMessages............................................................ 50FrequentlyAskedQuestions........................................ 54

JobRecord...................................................................... 54TechnicalData..................................................................56HydronicSystemElectronicControlsandThermostatsLimitedWarranty..............................................................56

CongratulationsonthepurchaseofyournewSnowMeltingControl!Thismanualcoversthecompleteinstallation,programmingandsequenceofoperationforthiscontrol.Youwillalsofindinstructionontesting,commissioning,andtroubleshootingthecontrolandsystemthatitoperates.

Getting Started

Table of Contents

3of56 ©203WattsRadiant

Theinstallermustensurethatthiscontrolanditswiringareisolatedand/orshieldedfromstrongsourcesofelectromagneticnoise.Conversely,thisClassBdigitalapparatuscomplieswithPart5oftheFCCRulesandmeetsallrequirementsoftheCanadianInterference-CausingEquipmentRegulations.However,ifthiscontroldoescauseharmfulinterferencetoradioortelevisionreception,whichisdeterminedbyturningthecontroloffandon,theuserisencouragedtotrytocorrect

theinterferencebyre-orientatingorrelocatingthereceivingantenna,relocatingthereceiverwithrespecttothiscontrol,and/orconnectingthecontroltoadifferentcircuitfromthattowhichthereceiverisconnected.CetappareilnumériquedelaclasseBrespectetouteslesexigencesduRèglementsurlematérielbrouilleurduCanada.

To avoid serious personal injury and damage to the equipment:

Improperinstallationandoperationofthiscontrolcouldresultindamagetotheequipmentandpossiblyevenpersonalinjuryordeath.Thiselectroniccontrolisnotintendedforuseasaprimarylimitcontrol.Othercontrolsthatareintendedandcertifiedassafetylimitsmustbeplacedintothecontrolcircuit.Donotattempttoservicethecontrol.Therearenouserserviceablepartsinsidethecontrol.Attemptingtodosovoidswarranty.

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Important Safety Information

Itistheinstallersresponsibilitytoensurethatthiscontrolissafelyinstalledaccordingtoallapplicablecodesandstandards.WattsRadiantisnotresponsiblefordamagesresultingfromimproperinstallationand/ormaintenance.

ReadManualandallproductlabelsBEFOREusingtheequipment.Donotuseunlessyouknowthesafeandproperoperationofthisequipment.KeepthisManualavailableforeasyaccessbyallusers.ReplacementManualsareavailableatWattsRadiant.com

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Disconnectallpowerbeforeopeningthecontrol.

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Radio Frequency Interference


OptionSnow/IceSensor090

Option2SnowSensor095andSlabSensor072

Option3SlabSensor072

OutdoorSensor070

Relay Relay

BoilerSupplySensor

082

SystemPump

ModulatingBoiler

654

DescriptionASnowMeltingControl654operatesahydronicsnowmeltingsystemusingamodulatingboilerandasystempump.Theboilerispipedinprimary-secondarytothesnowmeltsystemtoallowthesystempumptooperatecontinuouslyduringmeltingoridlingwhileallowingtheboilerandboilerpumptoturnonandoffasrequired.Theboilerfiringrateismodulatedusinga0-0V(dc)or4-20mAsignal.Theslabisheatedtomaintaintheslabtargettemperature.WhenaSnow/IceSensor090isinstalled,thesystemautomaticallystartswhensnoworiceisdetectedandcontinuestorununtiltheslabisdry.WhenaSnowSensor095isinstalledtogetherwithaSlabSensor072,thesystemautomaticallystartswhensnowisdetectedandrunsonatimerbeforeshuttingoff.AllsystemscanbemanuallystartedandshutoffusingatimerwheneitheraSnow/IceSensor090oraSlabSensor072isinstalled.

Application SettingsSetting Name Value

APPMODE BOIL

BOILTYPE MOD(modulatingboiler)

AUXRELAY SYS(systempump)

Snow or Ice DetectorOption Start and Stop Sequence Sensors Required (sold separately)

Autostart/Autostop Snow/IceSensor090

2 Autostart/Timedstop SnowSensor095&SlabSensor072

3 Manualstart/Timedstop SlabSensor072

Single Zone with Boiler A654-1 Mechanical

Applications


Snow/IceSensor090

OutdoorSensor

070

SupplySensor

082

Relay

SystemPump

Relay

OptionaltN4

Communication

SnowSensor095

SlabSensor072

SlabBrn

SlabBrn

ComBlkYel Blu Red

ComBlkYel Blu Red

Or And/Or

2187

3456

2187

3456

C tN4

ModulatingBoiler

T T–+

Transformer

LN C

R

SnowSensor

095

SlabBrn

+ModtN4Aux Ht R C

BretOut/

Com–BlkYel Blu Red Sup

No Power

LNG5V(ac)

Single Zone with Boiler A654-1 Electrical


DescriptionAsinglezoneincludestwoSnow/IceSensors090forTandemSnow/IceDetectionforawidersnoworicedetectionareaandbackupshouldoneofthetwosensorsfail.Whensnoworiceisdetectedthesnowmeltingsystemisautomaticallystartedandstopswhentheslabisdry.EachsensorrequiresaSnowMeltingControl654.ThemasterSnowMeltingControl654operatesahydronicsnowmeltingsystemusingamodulatingboilerandasystempump.Theboilerispipedinprimary-secondarytothesnowmeltsystemtoallowthesystempumptooperatecontinuouslyduringmeltingoridlingwhileallowingtheboilerandboilerpumptoturnonandoffasrequired.Theboilerfiringrateismodulatedusinga0-0V(dc)or4-20mAsignal.ThememberSnowMeltingControlmonitorstheSnow/IceSensorandrelaysthesensorinformationtothemastercontrolusingtekmarNet®communication.

OutdoorSensor070

Relay Relay

BoilerSupplySensor

082

SystemPump

ModulatingBoiler

Snow/IceSensor090

654Master

654Member

Snow/IceSensor090

654 Master - Application SettingsSetting Name Value

APPMODE BOIL

BOILTYPE MOD(modulatingboiler)




654 Member - Application SettingsSetting Name Value

APPMODE 090

Single Zone with Boiler and Tandem Snow / Ice Sensors A654-2 Mechanical


LNG

OutdoorSensor

070

SupplySensor

082

5V(ac)

Relay

SystemPump

Relay2187

3456

2187

3456

ModulatingBoiler

T T–+

Transformer

LN C

R

Snow/IceSensor090

654Member

654Master

Snow/IceSensor090

SlabBrn

+ModtN4Aux Ht R C

BretOut/


No Power

SlabBrn

+ModtN4Aux Ht R C

BretOut/


No Power

Single Zone with Boiler and Tandem Snow / Ice Sensors A654-2 Electrical


DescriptionASnowMeltingControl654operatesamodulatingsteamvalveandasystempump.Theheatsourcemaybeeitherdistrictsteamorasteamboiler.Theslabtemperatureiscontrolledbyadjustingthesteamvalvepositionusingananalog0to0V(dc)or4to20mAsignal.Theslabisheatedtomaintaintheslabtargettemperature.WhenaSnow/IceSensor090isinstalled,thesystemautomaticallystartswhensnoworiceisdetectedandcontinuestorununtiltheslabisdry.WhenaSnowSensor095isinstalledtogetherwithaSlabSensor072,thesystemautomaticallystartswhensnowisdetectedandrunsonatimerbeforeshuttingoff.AllsystemscanbemanuallystartedandshutoffusingatimerwheneitheraSnow/IceSensor090oraSlabSensor072isinstalled.





Application SettingsSetting Name Value

APPMODE MIX

BOILTYPE OFF


OutdoorSensor070

Relay

MixSupplySensor

082

DistrictSteam

SystemPump

ModulatingSteamValve

654




Single Zone with Modulating Steam Valve A654-3 Mechanical


LNG5V(ac)

Snow/IceSensor090

OutdoorSensor

070

SupplySensor

082

Relay

OptionaltN4

Communication

SnowSensor095

SlabSensor072

SlabBrn

SlabBrn

ComBlkYel Blu Red

ComBlkYel Blu Red

Or And/Or

2187

3456

SnowSensor

095

SlabBrn

+ModtN4Aux Ht R C

BretOut/


No Power

ModulatingSteamValve

SystemPump

–+

CtN4

Transformer

LN R

C

Single Zone with Modulating Steam Valve A654-3 Electrical


DescriptionAcarwashcanhaveupto2baysandapronseachhavinganicemeltingsystemoperatedbyaSnowMeltingControl654.Aboilerorwaterheaterheatsastoragetankwhichisusedforhotwatertowashvehiclesandheattheicemeltingsystem.ThecontrolusesaSlabSensor072tomeasuretheslabtemperatureandoperatesthezonetoensuretheslabisabovefreezing.Aprogrammablescheduleisusedtooperatetheicemeltingsystemduringthecarwashbusinesshoursandshutsoffthesystemwhenthecarwashisclosed.

Zone 1 - Application SettingsSetting Name Value

APPMODE PWM

BOILTYPE OFF


OUT/BRET OUT


APPMODE PWM

BOILTYPE OFF


OUT/BRET OFF

Multi-Zone Car Wash A654-4 Mechanical

OutdoorSensor

070

FreezeProtectionAquastat

Zone2Pump

Boiler

SystemPump

SlabSensor072

ZonePump

Relay

Zone

Zone2

654

654

SlabSensor072

Relay

Relay

SupplySensor082

SupplySensor082

of56 ©203WattsRadiant

OutdoorSensor

070

FreezeProtectionAquastat

ZonePump

Relay

Transformer

L

N5V(ac)

Relay Relay

Zone2Pump

SystemPump

SupplySensor

082

Zone Zone2

SupplySensor

082

SlabSensor

072

SlabSensor

072

C R

SlabBrn

+ModtN4Aux Ht R C

BretOut/


No Power

SlabBrn

+ModtN4Aux Ht R C

BretOut/


No Power

2187

3456

2187

3456

2187

3456

Multi-Zone Car Wash A654-4 Electrical


DescriptionAnelectricsnowmeltingsystemhasupto2zones.Zonehaspriorityoverzones2through2.EachSnowMeltingControl654isconnectedtoanelectricalcontactorwhichinturnenergizestheelectriccables.Wheneverthezoneelectricalcontactorisshutoff,zone2isabletooperate.Eachslabisheatedtomaintainitsslabtargettemperature.WhenaSnow/IceSensor090isinstalled,thesystemautomaticallystartswhensnoworiceisdetectedandcontinuestorununtiltheslabisdry.WhenaSnowSensor095isinstalledtogetherwithaSlabSensor072,thesystemautomaticallystartswhensnowisdetectedandrunsonatimerbeforeshuttingoff.AllsystemscanbemanuallystartedandshutoffusingatimerwheneitheraSnow/IceSensor090oraSlabSensor072isinstalled.


APPMODE ELEC

OUT/BRET OUT

PRIORITY COND(conditional)


APPMODE ELEC

OUT/BRET OFF

PRIORITY COND(conditional)





OutdoorSensor070

ElectricalPowerSupply

Zone

Zone2

654

654




AlertEquipment

AlertEquipment




Multi-Zone Electric A654-5 Mechanical

ProMeltContactorProPanel

ElectricalPowerSupply



Snow/IceSensor090

OutdoorSensor

070

Zone

Zone2


CP-50CP-00CP-200


CP-50CP-00CP-200

OptionalAlert

Equipment

OptionalAlert

Equipment

SnowSensor095

SlabSensor072

Snow/IceSensor090

SnowSensor095

SlabSensor072

SlabBrn

SlabBrn

ComBlkYel Blu Red

ComBlkYel Blu Red

Or And/Or

24V C PM

SlabBrn

SlabBrn

ComBlkYel Blu Red

ComBlkYel Blu Red

Or And/Or

24V C PM

SnowSensor

095

SlabBrn

+ModtN4Aux Ht R C

BretOut/


No Power

SlabBrn

+ModtN4Aux Ht R C

BretOut/


No Power

SnowSensor

095

Multi-Zone Electric A654-5 Electrical


Tools Required-----------------------------------------------------------------------------------------JewellerscrewdriverPhillipsheadscrewdriver

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Needle-nosePliersWireStripper

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Materials Required-------------------------------------------------------------------------------------8AWGLVTSolidWire(LowVoltageConnections)• 24V(ac)Transformer•

Whenchoosingthelocationforthecontrol,considerthefollowing:

InteriorWall.Keepdry.Avoidpotentialleakageontothecontrol.RelativeHumiditylessthan90%.Non-condensingenvironment.Noexposuretoextremetemperaturesbeyond-4to22°F(-20to50°C).Nodraft,directsun,orothercauseforinaccuratetemperaturereadings.

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Awayfromequipment,appliances,orothersourcesofelectricalinterference.Easyaccessforwiring,viewing,andadjustingthedisplayscreen.Approximately5feet(.5m)offthefinishedfloor.Themaximumlengthofwireis500feet(50m).Stripwireto3/8"(0mm)forallterminalconnections.Usestandard8conductor,8AWGwire.

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Low Voltage Wiring-------------------------------------------------------------------------------------Eachcablemustbepulledfromtheequipmenttothecontrol’splasticenclosure.Alllowvoltagewiringconnectionsentertheenclosurethroughthesquareknockoutontherear.Itisrecommendedtolabeleachcableforeasyidentification.Alllowvoltagewiresaretobestrippedtoalengthof3/8"(9mm)toensureproperconnectiontothecontrol.Pull four conductor 18 AWG LVT cable, up to 500 feet (150 m) for the following equipment:

SnowSensor095Pull five conductor 18 AWG LVT cable, up to 500 feet (150 m) for the following equipment:

Snow/IceSensor090

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Pull two conductor 18 AWG LVT cable, up to 500 feet (150 m) for the following equipment:

24V(ac)powerfromtransformerOutdoortemperaturesensorSupplysensor(ifapplicable)On/offboiler(ifapplicable)Modulatingboiler0-0V(dc)or4-20mA(ifapplicable)Mixingvalveormixinginjectionpump0-0V(dc)or4-20mA(ifapplicable)Boilerreturntemperaturesensor(ifapplicable)Alertoutput(ifapplicable)tekmarNet®4communicationtootherdevicesSlabsensor072(ifapplicable)

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FrontView

5"(127 mm)

3-1/4"(82 mm)

SideView

15/16" (23 mm)

MountingBase

654

SlabBrn

+ModtN4Aux Ht R C

BretOut/

ComComBlkYel Blu Red Sup

No Power

1-1/2"(38 mm)

9/16" (14 mm)

CL1-7/8" (47 mm)

3/4" (19 mm)

CL

CL

13/16" (20 mm)

4" (102 mm)

2-1/2"(64 mm)

29/32"(23 mm)

3-1/4" (83 mm)

InstallationPreparation

Physical Dimensions

Installation Location

Rough-In Wiring


Snow/IceSensor090

SlabBrn

+ModtN4Aux Ht R C

BretOut/


No Power

SnowSensor095

SlabSensor072

SlabBrn

+ModtN4Aux Ht R C

BretOut/


No Power

SnowSensor

095

Thecontrolrequiresanexternaltransformer.Thetotalpowercapacityofthepowersupplyshouldbelargerthanthetotalloadofallthedevicesconnectedtothecontrol.Thistotalloadmustnotexceed00VA.

Snow / Ice Sensor----------------------------------- Snow and Slab Sensor------------------------------

Outdoor, Supply and Boiler Return Sensor----------

OutdoorSensor

070or

BoilerReturnSensor

082

SupplySensor

082

SlabBrn

+ModtN4Aux Ht R C

BretOut/


No Power

Modulating Output and tN4 Communication---------

ModulatingBoilerMixingValveor

MixingInjectionPump0-0V(dc)Signal

tekmarNet®4Communication

– +

tN4 CSlabBrn

+ModtN4Aux Ht R C

BretOut/


No Power

Sizing the Transformer

Control Wiring

(ifapplicable)


Transformer and Relays----------------------------------------------------------------------------------------

Alert Relay Output---------------------------------------------------------------------------------------------

AlertEquipment

SlabBrn

+ModtN4Aux Ht R C

BretOut/


No Power

Relay

SystemPump

Relay2187

3456

2187

3456

Transformer

LN C

R

On/OffBoiler

TT

SlabBrn

+ModtN4Aux Ht R C

BretOut/


No Power

LNG5V(ac)


Thetemperaturesensor(thermistor)isbuiltintothesensorenclosure.

Removethescrewandpullthefrontcoveroffthesensorenclosure.Theoutdoorsensorcaneitherbemounteddirectlyontoawallora2"x4"electricalbox.Whentheoutdoorsensoriswallmounted,thewiringshouldenterthroughthebackorbottomoftheenclosure.Donotmounttheoutdoorsensorwiththeconduitknockoutfacingupwardsasraincouldentertheenclosureanddamagethesensor.Inordertopreventheattransmittedthroughthewallfrom

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affectingthesensorreading,itmaybenecessarytoinstallaninsulatingbarrierbehindtheenclosure.Theoutdoorsensorshouldbemountedonawallwhichbestrepresentstheheatloadonthebuilding(anorthernwallformostbuildingsandasouthernfacingwallforbuildingswithlargesouthfacingglassareas).Theoutdoorsensorshouldnotbeexposedtoheatsourcessuchasventilationorwindowopenings.Theoutdoorsensorshouldbeinstalledatanelevationabovethegroundthatwillpreventaccidentaldamageortampering.

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Mounting the Outdoor Sensor----------------------------------------------------------------------------------

Sensorwithbottomentrywiring

Sensorwithrearentrywiring

Sensormountedonto2"x4"electricalbox

Connect8AWGorsimilarwiretothetwoterminalsprovidedintheenclosureandrunthewiresfromtheoutdoorsensortothecontrol.Donotrunthewiresparalleltotelephoneorpowercables.Ifthesensorwiresarelocatedinanareawithstrongsourcesofelectromagneticinterference(EMI),shieldedcableortwistedpairshouldbeusedorthewirescanberuninagroundedmetalconduit.Ifusingshieldedcable,theshieldwireshouldbeconnectedtotheComterminalonthecontrolandnottoearthground.Followthesensortestinginstructionsinthisbrochureandconnectthewirestothecontrol.Replacethefrontcoverofthesensorenclosure.

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Wiring the Outdoor Sensor-------------------------------------------------------------------------------------

Wires from outdoorsensor to control’soutdoor sensor andsensor commonterminals

Sensor is built intothe enclosure

Mounting the Universal Sensor---------------------------------------------------------------------------------

Sensor Wiring

Thesesensorsaredesignedtomountonapipeorinatemperatureimmersionwell.TheUniversalSensorshouldbeplaceddownstreamofapumporafteranelboworsimilarfitting.Thisisespeciallyimportantiflargediameterpipesareusedasthethermalstratificationwithinthepipecanresultinerroneoussensorreadings.Propersensorlocationrequiresthatthefluidisthoroughlymixedwithinthepipebeforeitreachesthesensor.

Strapped to PipeTheUniversalSensorcanbestrappeddirectlytothepipeusingthecabletieprovided.Insulationshouldbeplacedaroundthesensortoreducetheeffectofaircurrentsonthesensormeasurement.


Agoodqualitytestmetercapableofmeasuringupto5,000kΩ(kΩ=000Ω)isrequiredtomeasurethesensorresistance.Inadditiontothis,theactualtemperaturemustbemeasuredwitheitheragoodqualitydigitalthermometer,orifathermometerisnotavailable,asecondsensorcanbeplacedalongsidetheonetobetestedandthereadingscompared.Firstmeasurethetemperatureusingthethermometerandthenmeasuretheresistanceofthesensoratthecontrol.Thewiresfromthesensormustnotbeconnectedtothecontrolwhilethetestisperformed.Usingthechartbelow,estimatethetemperaturemeasuredbythesensor.Thesensorand

thermometerreadingsshouldbeclose.Ifthetestmeterreadsaveryhighresistance,theremaybeabrokenwire,apoorwiringconnectionoradefectivesensor.Iftheresistanceisverylow,thewiringmaybeshorted,theremaybemoistureinthesensororthesensormaybedefective.Totestforadefectivesensor,measuretheresistancedirectlyatthesensorlocation.

Temperature Resistance Temperature Resistance Temperature Resistance Temperature Resistance°F °C °F °C °F °C °F °C-50 -46 490,83 20 -7 46,28 90 32 7,334 60 7 ,689-45 -43 405,70 25 -4 39,93 95 35 6,532 65 74 ,538-40 -40 336,606 30 - 34,558 00 38 5,828 70 77 ,403-35 -37 280,279 35 2 29,996 05 4 5,20 75 79 ,28-30 -34 234,96 40 4 26,099 0 43 4,665 80 82 ,72-25 -32 96,358 45 7 22,763 5 46 4,84 85 85 ,073-20 -29 65,80 50 0 9,900 20 49 3,760 90 88 983-5 -26 39,403 55 3 7,436 25 52 3,383 95 9 903-0 -23 8,08 60 6 5,3 30 54 3,050 200 93 829-5 -2 00,22 65 8 3,474 35 57 2,754 205 96 7630 -8 85,362 70 2 ,883 40 60 2,490 20 99 7035 -5 72,98 75 24 0,50 45 63 2,255 25 02 6480 -2 62,465 80 27 9,299 50 66 2,045 220 04 5985 -9 53,658 85 29 8,250 55 68 ,857 225 07 553

SensorWell

UniversalSensor

Immersion WellIfaUniversalSensorismountedonto"(25mm)diameterLtypecopperpipe,thereisapproximatelyan8seconddelaybetweenasuddenchangeinwatertemperatureandthetimethesensormeasuresthetemperaturechange.Thisdelayincreasesconsiderablywhenmildsteel(blackiron)pipeisused.Ingeneral,itisrecommendedthatatemperaturewellbeusedforsteelpipeofdiametergreaterthan-/4"(32mm).Temperaturewellsarealsorecommendedwhenlargediameterpipesareusedandfluidstratificationispresent.

Testing the Power---------------------------------------------------------------------------------------------. Removethefrontcoverfromthecontrol.2. Useanelectricaltestmetertomeasure(ac)voltagebetweentheRandCterminals.Thereadingshouldbe24V(ac)

+/–0%.3. Installthefrontcover.

Testing the Relay Outputs---------------------------ThecontrolincludesanOverridemenutocheckifthecontrol’srelaysareoperatingandthatthecontroliswiredcorrectlytothesnowmeltingequipment.Step: PressandholdtheHomebuttonfor3seconds.Step2: PressNEXTtonavigatetotheOverridemenu.Step3: PressENTERtoentertheOverridemenu.Step4: SelectManualOverridetoHand.Step5: Forhydronicsystems,setSystemPumptoOn.The

systempumpshouldnowbeoperating.

Step6: SetHeatRelaytoOn.Theboilerorelectricheatingcablesshouldstartheating.

Step7: FormodulatingboilerschangetheBoilerPercentfrom0to00%.Theboilershouldbefiring.

Step8: Foramixingvalveormixinginjectionpump,changetheMixPercentfrom0to00%.Themixingvalveshouldopenorthemixinginjectionpumpshouldincreasespeed.

Step9: SelecttheOverrideTimeafterwhichthecontrolresumesnormaloperation.

Step0:ExittheManualOverridebyselectingAuto.

Testing the Sensor Wiring

Testing the Control Wiring

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


Inhydronicapplicationmodes, thecontrol includesaMaximumHeatoperationwherethecontroloperatesthesnowmeltingsystemtomaintainthemaximumallowedheatingsetpoints.Thisallowstestingofthesnowmeltingsystemduringwarmweather.

Step: PressandholdtheHomebuttonfor3seconds.Step2: PressNEXTtonavigatetotheOverridemenu.Step3: PressENTERtoentertheOverridemenu.Step4: SelectManualOverridetoMax.Step5: SelecttheMaximumHeatTimeafterwhichthecontrol

resumesnormaloperation.Step6: ExittheManualOverridebyselectingAuto.

Whenoperatingahydronicsnowmeltingsystem,itisnecessarytopurgeandbleedallairoutofthesystem.ThecontrolincludesaPurgeoperationwheretheSystemPumpaswellaspumpsoperatedbythetekmarNet®systemareallturnedontoassistinpurgingairfromthesystem.

Step: PressandholdtheHomebuttonfor3seconds.Step2: PressNEXTtonavigatetotheOverridemenu.Step3: PressENTERtoentertheOverridemenu.Step4: SelectManualOverridetoPurge.Step5: SelecttheMaximumPurgeTimeafterwhichthecontrol

resumesnormaloperation.Step6: ExittheManualOverridebyselectingAuto.

ThesnowmeltingsystemcanbemanuallyturnedoffandthecontrolremainsoffuntilmanuallychangedbacktoAuto.Thisallowstheinstallerorendusertopermanentlydisablethesnowmeltingsystemwithoutremovingpowerfromthecontrol.

Step: PressandholdtheHomebuttonfor3seconds.Step2: PressNEXTtonavigatetotheOverridemenu.Step3: PressENTERtoentertheOverridemenu.Step4: SelectManualOverridetoOff.Step5: ExittheManualOverridebyselectingAuto.

Whenoperatinganelectricsnowmeltingsystem,thecontrolincludesaTestoperationwheretheelectricalheatingcablescanbeenergizedfor0minutesafterwhichthecontrolresumesnormaloperation.Thisallowstestingoftheelectricsnowmeltingsystemduringwarmweather.

Step: PressandholdtheHomebuttonfor3seconds.Step2: PressNEXTtonavigatetotheOverridemenu.Step3: PressENTERtoentertheOverridemenu.Step4: SelectManualOverridetoTest.Step5: ExittheManualOverridebyselectingAuto.

Switch SettingsSwitch Position Action

ONLOCk ACCESS LEVELThecontrolislocallylockedandtheaccesslevelcannotbechanged.SettoLockwheninstallationhasbeencompleted.

OFF

UNLOCk ACCESS LEVELThecontrolisunlockedandtheaccesslevelmaybechanged.GototheToolboxmenutochangetheaccesslevel.SettoUnlockduringtheinstallationprocess.ForsystemsthatincludeatekmarNet®systemcontrol:SetthetekmarNet®systemcontroltounlocktoallowaccessleveladjustmentonallconnecteddevices.

2ON Notused

OFF Notused

Meets Class B: ICES & FCC Part 15

Power: 24 V (ac) ±10%, 60 Hz, Class 2, 16 VA standby, 100 VA fully loadedRelays: 24 V (ac) 2 A, 3.5 A combined

1058-04

Switc

hSe

tting

s

www.WattsRadiant.comOrder #81016552

Designed and assembled in Canada

Lock

Unus

edUn

lock

ON

2

H1226A

Snow Melting Control 654

BackofControl

Manual Override - Maximum Heat

Manual Override - Test

Manual Override - Purge

Manual Override - Off


User Interface

HomeButton

ENTER HomeButtonReturntotheHomeScreen

Pressandholdfor3secondstoaccesstheprogrammingmenus.

Touchtogotothenextsetting

TouchtoquicklyentertheViewmenu

Touchtoadjustsettings

OperationField

StatusField

TouchtodisplayRunTime,Outdoor&SlabTemperature

TouchtoMeltorStop

Touchtoturnsystemoffwhileaway

MELT Systemismeltingsnoworice.

IDLE Systemisidling.

STRM Systemisinstormoperation.

OFF Systemisoff.

WWSD WarmWeatherShutDown.Theslabisnaturallywarmenoughtomeltsnoworice.

CWCO ColdWeatherCutOut.Toocoldtomelt.

TIMED Timedmeltingoperation.Systemoperatesuntiltimehaselapsed.

WARM Slabiswarminguptothemeltingtemperature.

AWAY Awayscene.Nomeltinguntiltheawaysceneisexited.

PEND Pending.ThesystemhasdetectedwaterbutitistoocoldtooperateorthescheduleisinIdleorOff.

WAIT Zonepriorityineffect.Zonemustwaituntilhigherpriorityzonefinishesmelting.

SENSOR Tandem090sensor.

TRACK Thiszonetracksthemeltingoperationofzone.

Display

Operation Field

Status Field

Symbols

HEAT ONHeatisturnedon.

tekmarNet®

Communicationispresent.

WARNING SyMBOLIndicatesanerrorispresent.

ARROWSAdjustthedisplayedsetting.


Thecontrolisshippedpre-programmedwithcommonsettings.Thecontrolhasan“Installer”accesslevelthatallowsfullaccesstoallsettingsanda“User”accesslevelthatrestrictsthenumberofsettingsavailable.Thecontroldefaultstothe“User”accesslevelafter2hoursofoperation.ForsystemsthatincludeatekmarNet®systemcontrol:SetthetekmarNet®systemcontroltounlocktoallowaccessleveladjustmentonallconnecteddevices.

Tochangetothe“Installer”accesslevel:IntheToolboxmenu,locateAccessAdjusttheaccesslevelto“Installer”bypressingtheupordownbutton.Thiswillpermitsettingchangestothecontrol.

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Programmable Settings

PressandholdtheHomebuttonfor3secondstoentertheprogrammingmenus.Thecontrolreturnstothelastprogrammingmenupreviouslyused.

Select a Programming Menu------------------------Touch“NEXT”toadvance(clockwiseinaboveillustration)tothenextmenu.Touch“BACK”togobackwards(counterclockwiseinaboveillustration)throughthemenus.Touch“ENTER”toenteramenu.

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Setting Items----------------------------------------Touch or arrowtoadjustthesettingifrequired.Touch“NEXTITEM”toadvancetothenextitemwithinthemenu.Touch“BACKITEM”togobackwardstothepreviousitemwithinthemenu.Toreturntotheparentmenuafterchangingasetting,pressandreleasetheHomebutton.ToreturntotheHomescreen,pressandreleasetheHomebuttontwiceorwait30secondstoautomaticallyreturntotheHomescreen.

••

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Pressandholdfor3secondstoaccesstheprogrammingmenus.

Access Levels and Access Level Lock

Programming Menus


TheViewmenuitemsdisplaythecurrentoperatingtemperaturesandstatusinformationofthesystem.

Item Field Range Access Description Set to

to2User

Installer

SNOW ZONEThesnowmeltzonenumberonthetekmarNet®system.Conditions:tekmarNet®communicationavailable.

–––,-76to49°F

(-60to65°C)

UserInstaller

OUTDOORCurrentoutdoorairtemperatureasmeasuredbythelocalorremoteoutdoorsensor.TheoutdoorairtemperatureissharedtoalldevicesinthetekmarNet®system.“–––”isdisplayedwhennooutdoorsensorisavailable.Conditions:ApplicationModeissettoPWM,Boil,MixorElec.

–––,-76to49°F

(-60to65°C)Installer

SLAB TARGETThecalculatedslabtargetofthesnowmeltingsystem.“–––”isdisplayedwhenthesnowmeltcontrolisoff.Conditions:ApplicationModeissettoPWM,Boil,MixorElecandasnow/icesensororslabsensorisinstalled.

-76to49°F(-60to65°C)

UserInstaller

SLABCurrentslabtemperatureasmeasuredbythecontrol.Conditions:ApplicationModeissettoPWM,Boil,MixorElecandasnow/icesensororslabsensorisinstalled.

DRYorWET UserInstaller

WATER SENSORCurrentstatusofthewaterdetectionsensor.Conditions:Asnow/icesensororsnowsensorisinstalled.

---,70to200°F(2.0to93.5°C)

Installer

BOILER TARGETThecalculatedboilertargetofthesnowmeltsystem.“–––”isdisplayedwhenthesnowmeltcontrolisnotoperatingtheboiler.Conditions:ApplicationModeissettoBoil.

---,70to200°F(2.0to93.5°C)

Installer

MIX TARGETThecalculatedmixtargetofthesnowmeltsystem.“–––”isdisplayedwhenthesnowmeltcontrolisnotoperatingthemixingvalveormixinginjectionpump.Conditions:ApplicationModeissettoMix.

-58to22°F(50.0to00.0°C)

Installer

SUPPLyCurrentsystemsupplytemperatureasmeasuredbythecontrol.Conditions:ApplicationModeissettoPWM,BoilorMix.

-58to22°F(50.0to00.0°C)

Installer

BOILER RETURNCurrentboilerreturntemperatureasmeasuredbythecontrol.Conditions:ApplicationModeissettoPWM,BoilorMixandOut/BretSensorissettoBret(boilerreturnsensor).

0to00% Installer

MIX RATECurrentpositionofthemixingvalveormixinginjectionpumpspeed.Conditions:ApplicationModeissettoMix.

0to00% Installer

BOILER RATECurrentfiringrateofthemodulatingboiler.Conditions:ApplicationModeissettoBoilandBoilerTypeissettoMod(modulatingboiler).

View Menu (1 of 2)



OFForONUser

Installer

HEAT RELAyCurrentstatusoftheheatrelay.Theboiler,pumporelectriccableisonwhenONisdisplayed.Theboiler,pumporelectriccableisoffwhenOFFisdisplayed.Conditions:ApplicationModeissettoPWM,Boil,Mix,orElec.

0to00% Installer

PWM RATECurrentdutycyclerateofthezoneorboilerforeach20minutecycle.Conditions:ApplicationModeissettoPWMorElec.NotvisiblewhenManualOverrideisnotAuto.

OFForONUser

Installer

SySTEM PUMP RELAyCurrentstatusofthesystempumprelay.Conditions:ApplicationModeissettoPWM,BoilorMixandAuxiliaryRelayissettoSYS(systempump).

OFForONUser

Installer

ALERT RELAyCurrentstatusofthealertrelay.Conditions:ApplicationModeissettoPWM,BoilorMixandAuxiliaryRelayissettoALRT(alert)orApplicationModeissettoElec.

00:00to24:00hours

UserInstaller

MANUAL MELT TIMEWhenmanuallystarted,thedisplayshowstheremainingruntimebeforeshuttingoff.Conditions:ApplicationModeissettoPWM,Boil,MixorElec.

00:00to6:00hours

UserInstaller

ADDITIONAL MELT TIMEWhenautomaticallystartedbyaSnow/IceSensor090,thedisplayshowstheremainingruntimebeforeshuttingoff.Conditions:ApplicationModeissettoPWM,Boil,MixorElecandasnow/icesensor090isinstalled.

View Menu (2 of 2)


TheSetTempmenuitemsselecttheoperatingtemperaturesofthesnowmeltsystem.


32to95°F(0.0to35.0°C)Default=36°F

(2.0°C)

UserInstaller

MELTINGSelectthedesiredsurfacetemperatureofthesnowmeltsurfacewhenmelting.Conditions:ApplicationModeissettoPWM,Boil,MixorElec.

OFF,20to95°F(-6.5to35.0°C)Default=OFF

Installer

IDLINGSelectthedesiredsurfacetemperatureofthesnowmeltsurfacewhenidling.Idlingpre-heatstheslabwhentheslabisdrybutcoldandallowsfasterreactiontimetoreachthemeltingtemperature.Recommendedforcommercialuseonly.Conditions:ApplicationModeissettoPWM,Boil,MixorElec.

OFF,20to95°F(-6.5to35.0°C)Default=28°F

(-2.0°C)

Installer

STORMSelectthedesiredsurfacetemperatureofthesnowmeltsurfacewhileoperatinginthestormoperation.Stormoperationtemporarilypre-heatstheslabtoallowfasterreactiontimetoreachthemeltingtemperature.Conditions:ApplicationModeissettoPWM,Boil,MixorElec.

0:30to24:00hours

Default=4:00hours

UserInstaller

MANUAL MELT RUN TIMESelecttheamountofrunningtimewhenmanuallystartingthesystem.Conditions:ApplicationModeissettoPWM,Boil,MixorElec.

0:00to6:00hours

Default=0:00hours

Installer

ADDITIONAL MELT TIMESelecttheamountofadditionalmeltingtimeaftertheSnow/IceSensor090isdry.Thisallowslowspotsontheslabtofullydrybeforethesnowmeltingsystemisshutoff.Conditions:ApplicationModeissettoPWM,Boil,MixorElecandaSnow/IceSensorisinstalledorTrackZoneissettoOn.

0:30to24:00hours

Default=8:00hours

Installer

STORM RUN TIMESelecttheamountofstormruntimetopre-heattheslabwhenadvisedofawinterstormwarning.Conditions:ApplicationModeissettoPWM,Boil,MixorElecandStormissettoatemperature.

AUTO,MIN,-2,-,MID,+,+2,

MAXDefault=AUTO

Installer

WATER SENSITIVITySelecthowsensitivetheSnow/IceSensor090orSnowSensor095istowaterdetection.Conditions:Snow/IceSensorissetto090or095.

AUTO,32to95°F

(0.0to35.0°C)Default=AUTO

Installer

WARM WEATHER SHUT DOWNSelectthetemperatureatwhichtoshutdownthesnowmeltingsystemduringwarmweather.Thisallowsthesnoworicetomeltofftheslabnaturally.Conditions:ApplicationModeissettoPWM,Boil,MixorElec.

OFF,-30to50°F(-34.5to0.0°C)Default=0°F

(-2.0°C)

Installer

COLD WEATHER CUT OUTSelectthetemperatureatwhichtoshutdownthesnowmeltingsystemduringextremelycoldweather.Belowthistemperature,theheatlossoftheslabexceedsthecapacityoftheboilerorheatingappliance.

Set Temp Menu


Timesettingsareonlyrequiredwhenusingaprogrammableschedule.TheTimemenuisnotavailablewhentheApplicationModeissetto090.


00to59Default=00

UserInstaller

MINUTESelectthecurrenttimeminutes.

2AMtoPM00to23

Default=2AM

UserInstaller

HOURSSelectthecurrenttimehours.

Sunday,Monday,Tuesday,

Wednesday,Thursday,Friday,

Saturday

UserInstaller

DAy OF WEEkSelectthecurrentdayoftheweek.

JANUARYtoDECEMBER

UserInstaller

MONTHSelectthecurrentmonth.Conditions:AvailablewhenDaylightSavingsTimeisOn.

to3Default=

UserInstaller

DAy OF MONTHSelectthedayofthecurrentmonth.Conditions:AvailablewhenDaylightSavingsTimeisOn.

2006to2038Default=203

UserInstaller

yEARSelectthecurrentyear.Conditions:AvailablewhenDaylightSavingsTimeisOn.

OFForONDefault=ON

UserInstaller

DAyLIGHT SAVINGS TIMESelectifdaylightsavingstimeisobserved.

2or24hourDefault=2hour

UserInstaller

TIME MODESelecteither2or24hourtimeformat.

OFForONDefault=OFF

UserInstaller

CLOCkSelectwhetherornottoshowthetimeclockonthedisplay.

Time Menu


TheSchedulemenucanoperateona24houror7dayrepeatingschedule.Whena24hourscheduleisselected,“SuMoTuWeThFrSa”isshownonthetopofthescreentoshowthattheeventtimeappliestoalldaysoftheweek.Whena7dayscheduleisselected,eachindividualdayoftheweekisshownwiththeeventtime.TheSchedulemenuisnotavailablewhentheApplicationModeissetto090.


SuMoTuWeThFrSa

2:00AMto:50PM,SKIP

or00:00to23:50,

SKIPDefault=6:00AM

UserInstaller

EVENT 1Thefirstprogrammablescheduletimeperiodoftheday.DuringEventthecontroloperatesinMELToperation.

SuMoTuWeThFrSa

2:00AMto:50PM,SKIP

or00:00to23:50,

SKIPDefault=

0:00PMwhenEvent/Dayis28:00AMwhenEvent/Dayis4

UserInstaller

EVENT 2Thesecondprogrammablescheduletimeperiodoftheday.DuringEvent2thecontroloperatesinOFForIDLEoperation.

SuMoTuWeThFrSa

2:00AMto:50PM,SKIP

or00:00to23:50,

SKIPDefault=6:00PM

UserInstaller

EVENT 3Thethirdprogrammablescheduletimeperiodoftheday.DuringEvent3thecontroloperatesinMELToperation.

SuMoTuWeThFrSa

2:00AMto:50PM,SKIP

or00:00to23:50,

SKIPDefault=0:00

PM

UserInstaller

EVENT 4Thefourthprogrammablescheduletimeperiodoftheday.DuringEvent4thecontroloperatesinOFForIDLEoperation.

Always availableOFF,ZONE

Available with tekmarNet®

OFF,ZONE,Master,2,3,4,Member,2,3,4

Default=OFF

UserInstaller

SCHEDULESelectifthecontrolshouldchangethetemperatureautomaticallyusingaprogrammableschedule.OFF=Programmablescheduleisnotused.Zone=Appliestothiscontrolonly.Master,2,3,4=Inchargeofoneoffouravailablenetworkschedules.Member , 2, 3, 4 = Follows selected networkschedule.

2or4Default=2

UserInstaller

EVENT PER DAySelectthenumberofeventsperday.

24houror7dayDefault=24hour

UserInstaller

24 HOUR / 7 DAySelectbetweena24hourscheduleora7daysperweekschedule.

Schedule Menu


TheDisplaymenuitemsselectthetemperatureunitsandbacklightoptions.


°For°CDefault=°F

UserInstaller

UNITSSelectFahrenheitorCelsiusasthetemperatureunits.

ON,ONMELT,

OFFDefault=ONMELT

UserInstaller

BACkLIGHTSelecthowthedisplaybacklightoperates.ON=Alwayson.ONMELT=Onwhenmelting,offwhennotmelting.Thisprovidesavisualindicatortooccupantsthatthesnowmeltingsystemiscurrentlymelting.OFF=Alwaysoff.

TheScenemenuitemsselectsiftheawaysceneandtheawaykeyareavailable.TheScenesmenuisnotavailablewhentheApplicationModeissetto090.


NONEorAWAYDefault=NONE

UserInstaller

SCENESEnableordisabletheuseofscenes(buildingoverrides)onthiscontrol.

OFForONDefault=OFF

UserInstaller

AWAy kEyEnableordisabletheawaytouchkeyonthehomescreen.Condition:ScenesmustbesettoAway.

Display Menu

Scene Menu


TheMonitormenuitemsprovideinformationaboutthesystem’soperationandperformance.TheMonitormenuisnotavailablewhentheApplicationModeissetto090.

Item Field Range Access Description

0to9999hoursUser

Installer

HEAT HOURSRecordsthenumberofrunninghourssincetheitemwaslastreset.TouchthenumberandthentheENTERkeytoresettozero.

0to9999hours Installer

HEAT CyCLESRecordsthenumberofcyclesoftheheatrelaysincetheitemwaslastreset.TouchthenumberandthentheENTERkeytoresettozero.

0to9999hoursUser

Installer

SySTEM PUMP HOURSRecordsthesystempumprunninghourssincetheitemwaslastreset.TouchthenumberandthentheENTERkeytoresettozero.Conditions:AuxiliaryRelayissettoSYS(systempump).

-58to67°F(-50.0to75.0°C) Installer

SLAB HIGHRecordsthehighestslabtemperaturesincetheitemwaslastreset.TouchthenumberandthentheENTERkeytoreset.Conditions:Snow/IceSensorissetto090orSlabSensorissettoOn.


SLAB LOWRecordsthelowestslabtemperaturesincetheitemwaslastreset.TouchthenumberandthentheENTERkeytoreset.Conditions:Snow/IceSensorissetto090orSlabSensorissettoOn.


OUTDOOR HIGHRecordsthehighestoutdoortemperaturesincetheitemwaslastreset.TouchthenumberandthentheENTERkeytoreset.


OUTDOOR LOWRecordsthelowestoutdoortemperaturesincetheitemwaslastreset.TouchthenumberandthentheENTERkeytoreset.


SUPPLy HIGHRecordsthehighestsupplytemperaturesincetheitemwaslastreset.TouchthenumberandthentheENTERkeytoreset.Conditions:ApplicationModeissettoPWM,BoilorMix.


SUPPLy LOWRecordsthelowestsupplytemperaturesincetheitemwaslastreset.TouchthenumberandthentheENTERkeytoreset.Conditions:ApplicationModeissettoPWM,BoilorMix.


BOILER RETURN HIGHRecordsthehighestboilerreturntemperaturesincetheitemwaslastreset.TouchthenumberandthentheENTERkeytoreset.Conditions:ApplicationModeissettoPWM,BoilorMixandOut/BretSensorissettoRET(return).


BOILER RETURN LOWRecordsthelowestboilerreturntemperaturesincetheitemwaslastreset.TouchthenumberandthentheENTERkeytoreset.Conditions:ApplicationModeissettoPWM,BoilorMixandOut/BretSensorissettoRET(return).

Monitor Menu


TheToolboxMenuisalocationforsysteminformationandTestfunctions.Ifanyerrorsarepresentonthesystem,theywillbelocatedatthebeginningofthismenu.


Installer(INST)User(USER)

Default=INST

UserInstaller

ACCESS LEVELSelecttheaccesslevelofthecontrol,whichdetermineswhichmenusanditemsareavailable.RevertstoUSERaccesslevelafter24hours.Conditions:Toadjust,theswitchsettingonthiscontrolandanyconnectedtekmarNet®systemcontrolmustbesettoUNLOCK.

SoftwareJ226AType654

UserInstaller

SOFTWARE VERSION AND TyPE NUMBERDisplaysthesoftwareversionandtheproducttypenumber.

Notapplicable InstallerFACTORy DEFAULTSLoadsthefactorydefaultsettings.PressENTERtoloaddefaults.

SeeTroubleshootingGuide Installer

HISTORy - 1 THROUGH 5Displaysahistoryofanypasterrorsthathaveoccurredonthesystem.Willclearafter30days,orpresstheCancelkeytomanuallyclear.Thelast5historyitemswilldisplayifpresent.

Toolbox Menu


TheOverrideMenuallowsanoperatortomanuallytesteachrelayandmanuallystartthesystem.


HydronicAUTO,HAND,

MAX,PRGE,OFF

ElectricAUTO,HAND,

TEST,OFF

Default=AUTO

Installer

MANUAL OVERRIDEManuallyoverridethenormalautomaticoperationofthecontroltotesttheequipmentoroperatethesystematthemaximumtemperaturelimits.AUTO=NormaloperationHAND=ManualoverrideofeachrelayoutputMAX=OperatehydronicsystematmaximumheatTEST=Operateelectricsystemfor0minutesPRGE=Hydronicsystempurgeoperatespumpstohelpbleedairfromthesystem

OFForONDefault=OFF

InstallerSySTEM PUMP RELAyManuallyturnonthesystempumpduringtheHANDManualOverride.

OFForONDefault=OFF

InstallerHEAT RELAyManuallyturnontheheatduringtheHANDManualOverride.

0to00%Default=0%

Installer

BOILER PERCENTManuallysetthemodulatingboilerfiringrateduringtheHANDManualOverride.Conditions:ApplicationModeissettoBoil.

0to00%Default=0%

Installer

MIX PERCENTManuallysetthemixingvalveormixinginjectionpumpoutputduringtheHANDManualOverride.Conditions:ApplicationModeissettoMix.

OFForONDefault=OFF

Installer

ALERT RELAyManually turnonthealert relayduringtheHANDManualOverride.Conditions:ApplicationModeissettoPWM,BoilorMixandAlertRelayissettoALRT(alert)ortheApplicationModeissettoElec.

0:0to72:00hours

Default=0:0hours

InstallerOVERRIDE TIMESelecttheamountoftimethattheHANDManualOverrideisineffectbeforereturningtoAutomaticoperation.

0:0to72:00hours

Default=24:00hours

Installer

MAXIMUM PURGE TIMESelecttheamountoftimethatthePURGEManualOverrideisineffectbeforereturningtoAutomaticoperation.Conditions:ApplicationModeissettoPWM,BoilorMix.

0:0to72:00hours

Default=24:00hours

Installer

MAXIMUM HEAT TIMESelecttheamountoftimethattheMAXHEATManualOverrideisineffectbeforereturningtoAutomaticoperation.Conditions:ApplicationModeissettoPWM,BoilorMix.

Override Menu


TheSystemMenuprovidessettingsonhowtoconfigureandoperatethemechanicalequipment.


PWM,BOIL,MIX,ELEC,090

Default=PWMInstaller

APPLICATION MODESelectthecontrolapplicationmode.PWM=HydronicPulseWidthModulation.BOIL=Hydronicboilerheatssnowmeltingsystem.MIX=Hydronicmixingvalveorinjectionpumpheatssnowmeltingsystem.ELEC=Electricsnowmelt.090=TandemSnow/IceDetectionusing090

NONE,090,095

Default=090

InstallerSNOW / ICE SENSORSelectifaSnow/IceSensor090orSnowSensor095isinstalled.

OFForONDefault=ON

Installer

SLAB SENSORSelectifaSlabSensor072isinstalledtomeasuretheslabtemperature.Conditions:ApplicationModeissettoPWM,BoilorMixandSnow/IceSensorissettoNoneor095.

OFForONDefault=ON

Installer

SLAB PROTECTIONSelect if theslabshouldbeprotectedfromlargetemperaturedifferentialstoavoidcrackingtheconcreteduetohightensilestress.Conditions:ApplicationModeissettoBoilorMixandSnow/IceSensorissetto090orSlabSensorissettoOn.

OFF,OUT(Outdoor)or

BRET(BoilerReturn)Default=OUT

Installer

OUTDOOR OR BOILER RETURN SENSORSelectiftheOut/Bretwiringterminalisconnectedtoanoutdoorsensororaboilerreturnsensor.Conditions:ApplicationModeissettoPWM,BoilorMixorElec.

OFForONDefault=OFF

Installer

ECONOMELTEconoMeltallowstheusertomechanicallyremovesnowthenmanuallystartthesystemtomeltthethinsnowlayerorice.Conditions:ApplicationModeissettoPWM,BoilorMixorElec.

OFForONDefault=ON

Installer

tekmarNet® SySTEM PUMPSelectifthesystempumplocatedonthetekmarNet®SystemControlshouldoperatewhenthesnowmeltzoneisheating.Conditions:ApplicationModeissettoPWM,BoilorMixandBoilerTypeissettoCTRL(tN4control).

SYS(SystemPump)or

ALRT(Alert)Default=SYS

Installer

AUXILIARy RELAySelectiftheauxiliaryrelayshouldfunctionassystempumporasanalert.Conditions:ApplicationModeissettoPWM,BoilorMix.

0.5to7.0days,OFFDefault=3.0days

Installer

MAXIMUM MELT TIMESelecttolimittheamountofmeltingruntimeaftersnowisautomaticallydetectedbyaSnow/IceSensor090oraSnowSensor095.Conditions:ApplicationModeissettoPWM,BoilorMixorElec.

System Menu


TheBoilerMenuprovidessettingsonhowtoconfigureandoperatetheboiler.


App Mode = BoilMOD,STG,EMS,EMS2

Default=MOD

App Mode = MixOFF,ENBL,

CTRLDefault=OFF

App Mode = PWMOFF,CTRL

Default=OFF

Installer

BOILER TyPEThetypeofboilerconnectedtothecontrol.MOD=Modulatingboiler.STG=Singleone-stageon-offboiler.EMS=tekmarboilerstagingcontrols.EMS2=Viessmann®Vitodens00modulatingboilerswith0-0VOpenTherm™Module.CTRL=tekmarNet®SystemControloperatesboiler.ENBL=Whenoperatingamixingvalveormixinginjectionpump,theheatrelayisclosedtofiretheboiler.

0-0or4-20Default=0-0

Installer

BOILER MODULATION TyPESelectifthemodulatingboileracceptsa0-0V(dc)or4-20mAinputsignaltocontroltheboilerfiringrate.Conditions:BoilerTypeissettoMOD(modulatingboiler).

0to50%Default=0%

Installer

BOILER MINIMUM MODULATIONTheminimumpercentmodulationoftheboilerburner.Conditions:BoilerTypeissettoMOD(modulatingboiler).

OFF,0to80seconds

Default=OFFInstaller

BOILER MODULATION DELAyDelaytimebetweentheburnerfiringandtheboilerreleasingtomodulation.Conditions:BoilerTypeissettoMOD(modulatingboiler).

30to230secondsDefault=30seconds

Installer

BOILER MOTOR SPEEDThetimerequiredforthemodulatingactuatingmotortofullyopenthegasvalveorramptheburnerfanfromofftofullspeedonamodulatingboiler.Setto30secondsunlessotherwiserecommendedbytheboilermanufacturer.Conditions:BoilerTypeissettoMOD(modulatingboiler).

AUTO,2to42°F(.0to23.5°C)Default=AUTO

Installer

BOILER DIFFERENTIALThetemperaturedifferentialthatthecontrolistousetocycletheboileronandoff(halfaboveandhalfbelowtarget).Conditions:BoilerTypeissettoMOD(modulatingboiler)orSTG(onestage).

OFF,50to80°F(0.0to82.0°C)Default=OFF

Installer

BOILER MINIMUMTheminimumallowedboilertargettemperatureandboilerreturnprotectiontemperature.Checktheboilermanufacturer’smanualforrecommendedsupplywatertemperatures.Conditions:ApplicationModeissettoBoilorApplicationModeissettoMixandtheBoilerTypeissettoCTRL(tekmarNet®SystemControl)andOut/BretSensorissettoRET(return).

Boiler Menu


TheMixMenuprovidessettingsonhowtoconfigureandoperatethemixingvalveormixinginjectionpump.TheMixmenuisonlyavailablewhentheApplicationModeissettoMix.


0-0or4-20Default=0-0

Installer

MIX TyPESelectthetypeofmixinganalogsignal.0-0=0to0V(dc)4-20=4to20mA

30to230seconds

Default=05seconds

Installer

MIX MOTOR SPEEDThetimethatthemixactuatingmotorrequirestooperatefromfullyclosedtofullyopen.MixingInjectionPump=30secondsRefertoactuatingmotorforcorrectsetting.

80to80°F(26.5°Cto82.0°C),

OFFDefault=40°F

(60°C)

InstallerMIX MAXIMUMSelectthemaximumoperatingtemperatureofthesystemsupplywater.

Mix Menu



Range:AUTO,0to24,

b:0tob:24,:0to:24,2:0to2:24,3:0to3:24

InstallerADDRESSThetekmarNet®addressofthiscontrol.Tomanuallysettheaddress,usetheupordownarrowbuttons.

to24 InstallerDEVICE COUNTProvidesacountofallthetekmarNet®thermostats,setpointcontrolsandsnowmeltingcontrolsonthetekmarNet®system.

to2Default=

InstallerSNOW ZONESelecttheSnowZonethatthiscontroloperates.SnowZonehasthehighestprioritywhileSnowZone2hasthelowestpriority.

OFForONDefault=OFF

Installer

TRACk ZONESelecttotrackandrecordthemeltruntimeofSnowZoneandrepeatsthisruntimeonthiscontrol.Thisallowssnowzoneswithoutasnow/icesensortoautomaticallystart.Conditions:SnowZonemustbeset2through2(cannotbeSnowZone)andApplicationModeissettoPWM,Boil,MixorElec.

to2Default=

Installer

MELT GROUPAUserSwitchmaybeusedtomanuallystartmeltingthesnowzone.SettheMeltGroupnumbertothecorrespondingSetpointEnablenumberontheUserSwitch.Conditions:ApplicationModeissettoPWM,Boil,MixorElec.

to2Default=2

Installer

STORM GROUPAUserSwitchmaybeusedtomanuallystartstormoperationofthesnowzone.SettheStormGroupnumbertothecorrespondingSetpointEnablenumberontheUserSwitch.Conditions:ApplicationModeissettoPWM,Boil,MixorElec.

OFF,COND,FULL

Default=OFFInstaller

PRIORITySelectthepriorityoperationofthesnowmeltingsystem.Conditions:ApplicationModeisPWM,MixorElec.

OFForONDefault=OFF

Installer

LOCAL NETWORk GROUPSelectifscenesandtimeclockaresharedwhenconnectedtoatekmarNet®system.OFF=Sendandreceivemessages.ON=Receivemessagesonly.Conditions:ApplicationModeissettoPWM,Boil,MixorElec.

ThetekmarNet®menuincludessettingsofhowthesnowmeltingcontrolcommunicatesandoperatestogetherwithothercontrols.ThetekmarNet®menuisonlyavailablewhencommunicationisdetected.

tekmarNet® Menu


Sequence of Operation

Asnowmeltingsystemcanofferasafe,convenient,andcosteffectivewayofremovingsnowandicefromthesnowmeltingslabandsimilarsurfaces.Safetyisincreasedbyactivatingthesnowmeltingsystemassoonasthesnowfallsratherthanwaitingformechanicalsnowremovalaftersnowhasaccumulated.Thiseliminatessliphazardsandreducestheriskofinjurybymechanizedsnowmeltingequipment,therebyreducingpotentialliabilitycosts.Theeliminationofsnowplowequipmentandcorrosivesaltsalsoreducesdamagetotheslabsurfaceandtotheenvironment.Snowmeltingsystemswhencontrolledcorrectlycanbecostcompetitivecomparedtomechanicalsnowremoval.

Thesnowmeltingcontrolcanoperateinoneoffourdifferentways:

Melt HeatstheslabtomeltsnoworiceIdle Pre-heatstheslabjustbelowfreezingtoshortenthe

timerequiredtomeltsnowStorm Temporarilypre-heatstheslabjustbelowfreezingto

shortenthetimerequiredtomeltsnowOff SnowmeltingsystemisoffThecontroldisplayshowsthecontroloperationinthehomescreen.

Thesnowmeltingsystemoperatestheheatingequipmenttoheattheslabfromacoldstartorfromtheidleorstormtemperaturetoreachthemelttemperaturesettingtomeltsnoworice.Meltoperationcanbetriggeredautomaticallyusingasnow/icesensor,bytrackingtheruntimeofanother

zone,manuallybypressingabutton,orbyaprogrammableschedule.Themelttemperaturesettingaffectscalculatedtargetssuchastheslabtarget,boilertargetandmixtarget.

Controllingtheslabtemperatureiscriticaltominimizingthecostofsnowmelting.ThisrequiresthateitheraSnow/IceSensor090oraSlabSensor072isinstalled.TheSnow/IceSensorcontainsabuilt-inslabtemperaturesensor.Whilethecontrolwillcontinuetooperatewithoutaslabsensorinstalled,operatingcostswillbemuchhigher.Theslabisoperatedusingslaboutdoorreset.Astheoutdoortemperaturegetscolder,theheatlossoftheslabincreases.Inordertokeeptheslabsurfaceataconstanttemperaturewhileoperating,theinnercoreoftheslabmustbeheatedabovethemelt,idleorstormtemperaturesetting.Theamountthattheslabinnercoretemperatureisabovethemelt,idleorstormsettingisproportionaltotheoutdoortemperature.Sincetheslabsensorisinstalledbelowthesurfaceoftheslab,itisnotmeasuringthetrueslabsurfacetemperaturebutrathertheinnercoretemperature.Thecontrolautomaticallycompensatesforthistemperaturedifference.However,theSlabitemintheViewmenudisplaystheactualmeasured

temperature,soitisnormaltoviewslabtemperaturesthatexceedthemelt,idle,orstormtemperaturesettings.

Surface temperature = 35°F

Decreasing Air Temperature

Incr

easi

ng S

lab

Cor

e Te

mpe

ratu

re

SlabSurfaceTemperatureisConstant

SlabOutdoorResetSlabOutdoorReset

Core(sensor)iswarmer

Snow Melting Overview

Slab Temperature Control

Melt Operation


ThesnowmeltingsystemcanbestartedmanuallybytouchingtheMeltkeyonthecontroldisplay.Oncemanuallystarted,thesnowmeltingsystemcontinuestooperateuntilthetimesetbytheManualMeltRunTimesettingintheSetTempmenuelapses.

TouchMELTkey

095detectswater

Trackedzonemelt

UserSwitch/GatewayEnable

MANUALMELTRUNTIMEelapses

AWAYscene

Trackedzonetimeelapses

TouchSTOPkey

WWSD

UserSwitch/GatewayDisable

CWCO

TimedMeltor

Idle

Off

095detectswater

PressMelt

IfamanualstarthasbeenprovidedandaSnow/IceSensordetectswater,thecontrolchangesfrommanualmelttoautomaticoperation.ThesnowmeltingsystemwillcontinuetooperateuntilthesensorisdryandtheAdditionalMeltTimeelapses.

AutomaticstartandstopoperationrequirestheinstallationofaSnow/IceSensor090.Thecontrolcontinuallymonitorsthesensorforthepresenceofmoistureandslabtemperatureconditionsinwhichsnoworicemaybepresent.Whenmoistureisdetected,thecontrolwillshow“SensorWaterWet”intheViewmenu.Whenthesensorisdrythecontrolwillshow“SensorWaterDry”.ThecontrolincludesaSensitivitysettingintheSetTempmenuthatallowstheinstallertoadjusttheamountofmoisturerequiredtostartandstopthemeltingoperation.Inareaswithlowamountsofdustand/orairpollution,thesensitivitymayneedtobeincreased.TheSensitivitysettingdefaultisAuto,andthecontrolwillautomaticallydeterminethebestsuitablesensitivitysettingfortheinstallation.

TouchSTOPkey

090andslabdryandADDMELTtimeelapses

or

Idle

OffAWAYscene

WWSD

090detectswater

ExitsCWCOMelt

Suspended

EntersCWCO

AutoMelt


Whenmoistureisdetectedandtheslabandoutdoortemperaturesareatorbelowmeltingsetting,thecontrolwillautomaticallystartthesnowmeltingsystem.Asthesnoworicemeltsandtheslabdriesoff,thesensoralsodriesoffatthesametime.Whenthesensorisdry,thesnowmeltsystemautomaticallyshutsoff.Iftherearelowspotsontheslabsurfacethatdryoffslowerthanthesensor,additionalmeltingruntimecanbeincludedbyadjustingtheAdditionalMeltTimesettingintheSetTempmenu.Ifthesnowmeltingsystemismanuallystopped,theSnow/IceSensormustfullydrybeforeitisabletodetectanewsnowfallandautomaticallystartthesnowmeltingsystem.

Snow / Ice Sensor 090

Melt - Manual Start and Timed Stop

Melt - Automatic Start and Stop

RemoteaccesstostartthesystemcanoptionallybeprovidedwithatekmarNet®UserSwitchorGatewayfromtekmarControlSystems.


AutomaticstartwithatimedstopoperationrequirestheinstallationofaSnowSensor095.ItisalsohighlyrecommendedtoinstallaSlabSensor072inordertoregulatetheslabtemperatureandoperatethesnowmeltingsystematthehighestpossibleefficiency.Thecontrolcontinuallymonitorsthesensorforthepresenceofmoistureandslabtemperatureconditionsinwhichsnoworicemaybepresent.Whenmoistureisdetected,thecontrolwillshow“SensorWaterWet”intheViewmenu.Whenthesensorisdrythecontrolwillshow“SensorWaterDry”.ThecontrolincludesaSensitivitysettingintheSetTempmenuthatallowstheinstallertoadjusttheamountofmoisturerequiredtostartandstopthemeltingoperation.Inareaswithlowamountsofdustand/orairpollution,thesensitivitymay

needtobeincreased.ThefactorydefaultisfortheSensitivitysettingisAuto.Thecontrolautomaticallydeterminesthebestsuitablesensitivitysettingfortheinstallation.WhenmoistureisdetectedandboththeslabandoutdoortemperaturesarebelowtheMeltingsetting,thecontrolautomaticallystartsthesnowmeltingsystem.ThesnowmeltingsystemoperatestoheattheslabtotheslabtargettemperatureandcontinuestooperateuntilthetimesetbytheManualMeltRunTimeintheSetTempmenuelapses.

WhenaSnow/IceSensor090isinstalled,theinstallercanchoosetoselecttoeitherautomaticallyormanuallystartthesnowmeltingsystem.SelectingEconoMelttoOnprovidestheoptiontoremovethesnowusingasnowploworshovelandthenusethesnowmeltingsystemtomelttheremainingthinlayerofsnoworicethatmechanicalsnowremovalmethodsareunabletoremove.Thesnowmeltingsystemstopswhenthesensorisdry.ThefactorydefaultforEconoMeltisOff.

TouchMELTkey

095detectswater

Trackedzonemelt

UserSwitch/GatewayEnable

MANUALMELTRUNTIMEelapses

AWAYscene

Trackedzonetimeelapses

TouchSTOPkey

WWSD


CWCO

TimedMeltor

Idle

Off

095detectswater

TouchSTARTkey

090andslabdryandADDMELTtimeelapses

AWAYscene

TouchSTOPkey

WWSD


MeltOff

ExitsCWCOMelt

Suspended

EntersCWCO

Snow Sensor 095

Melt - EconoMelt

Melt - Automatic Start and Timed Stop


Thesnowmeltingsystemcanhavemultiplezones.Zoneshavetheoptiontotrackthemeltingruntimeofzone.ThisisusefulincaseswherezonehasanautomaticSnow/IceSensorinstalledandtheremainingzonesdonot.Thisallowszones2to2togainthefunctionalityofautomaticstartingandstoppingwithonlyoneSnow/Icesensorinstalledinthesystem.Whenzonedetectssnoworice,itstartsmelting.Zoneswithtrackingenabledcanalsostartmeltingunlesspriorityisselected.WhenthesensorinzoneisdryortheManualMeltRunTimehasfullyelapsed,itsendsasignaltothetrackedzonesthatzonehasstopped.EachzonecancontinuetooperatetocompletetheirownAdditionalMeltTimeafterwhichthezonestopsheatingandreturnstotheOfforIdleoperation.Zoneswithpriorityselectedstartafterzonehasfinishedmeltingandrepeatthesameruntimeaszone.

Thesnowmeltingsystemcanbestartedbaseduponaprogrammableschedule.Thetimeclockmustcrosspastthescheduledeventtimeinordertostartorstop.Inaddition,operationisdependentonwhetherornotaslabsensor,snow/ice,snowsensorornoslabsensorisinstalled.Theuseofaprogrammablescheduleiswellsuitedforcommercialinstallationswhereoperationisnotrequired24hoursaday.

Systems With Automatic Detection------------------ThisapplieswhenaSnow/IceSensor090orSnowSensor095isinstalled.WhenthetimeclockreachesthescheduleEvent(wake)time,thesystemisallowedtomeltifthesensordetectssnoworice.WhenthetimeclockreachesthescheduleEvent2(unoccupied)time,thesystemisofforinidleoperation.WhenthetimeclockreachesthescheduleEvent3(occupied)time,thesystemisallowedtomeltifthesensordetectssnoworice.WhenthetimeclockreachesthescheduleEvent4(sleep)time,thesystemisofforinidleoperation.

Systems Without Automatic Detection--------------ThisapplieswhenaSlabSensor072ornoslabsensorisinstalledandthereisnoautomaticdetection.WhenthetimeclockreachesthescheduleEvent(wake)time,thesystemisinmeltoperation.WhenthetimeclockreachesthescheduleEvent2(unoccupied)time,thesystemisofforinidleoperation.WhenthetimeclockreachesthescheduleEvent3(occupied)time,thesystemisinmeltoperation.WhenthetimeclockreachesthescheduleEvent4(sleep)time,thesystemisofforinidleoperation.

Scheduleevent2

Scheduleevent4

TouchSTOPkey

AWAYscene

WWSD


CWCO

Scheduleevent

Scheduleevent3

or

Idle

Off

ScheduledMelt

Zone

TrackMeltStartandStop

RecordsRun Time

Snow / IceSensor

SlabSensor

SlabSensor

Zone2 Zone3

RepeatsZone 1 RunTime + AddMelt Time

RepeatsZone 1 RunTime + AddMelt Time

Melt - Tracked Start and Stop

Melt - Scheduled Start and Stop


Whenthesnowmeltingsystemstartsfromacoldtemperature,theremaybealongtimedelaybeforetheslabiswarmenoughtomeltsnow.Thistimedelayallowssnowtoaccumulateontheslabwhichisnotacceptableinsomecommercialandinstitutionalapplications.Todecreasethestartuptime,theslabcanbepre-heatedtomaintainaminimumtemperature.ThisisknownastheIdletemperature.Idlingrequireslargeenergyconsumptionandisgenerallyrecommendedforinstitutionaland/orcommercialinstallationswheresafetyconcernsareparamount.Idleisshownonthedisplaywhenthecontrolisinidleoperation.Whendesigningasnowmeltingsystem,anengineermayspecifytheamountofallowedsnowaccumulationastheSnow-FreeAreaRatio.Therearethreedifferentlevels.ASnow-FreeAreaRatioofisdefinedasasystemthatmeltsallsnowasitfallswithnoallowedaccumulation.ThisrequiresthattheIdletemperaturebesetjustbelowfreezing.Examplesofthesetypesofapplicationsinclude:

HospitalemergencyareasHelicopterlandingpadsParkinggarageramps

ASnow-FreeAreaRatioof0.5isdefinedasasystemwithpartialsnowaccumulationontheslabbutnotinallareas.ThesetypesofsystemsmayalsouseIdlingbutusuallysetatatemperatureseveraldegreesbelowfreezingtoreduce

•••

energyconsumption.Applicationsmayinclude:SteepresidentialdrivewaysCommercialsidewalksLoadingdocks

ASnow-FreeAreaRatioof0isdefinedasasystemthatallowssnowaccumulation.Thesesystemsoperatethesnowmeltingsystemfromacoldstartresultinginthelowestenergyconsumptioncostsandthelongesttimestostartmeltingsnow.InthiscasesettheIdletooff.Thisisrecommendedformostresidentialapplications:

FlatresidentialdrivewaysPatiosResidentialsidewalks

Somesystemsaredesignedforkeepingaslabsurfacefreeoficeratherthanfreeofsnow.Themostcommonapplicationsinclude:

CarwashbaysandapronsAircrafthangerapronsTurfconditioningongolfcoursegreens

ThesesystemsrequiretheuseofIdlingatornearfreezingthroughout thewinterandmayresult inhighenergyconsumption.

•••

•••

•••

DrySnow Ice Sensor

ASnow/IceSensor090automaticallyshutsoffthesnowmeltingsystemwhenthewatersensorisdry.Duetotheconstructionoftheslabandthelayoutoftheheatingpipeorelectricalcable,theremaybeareasthatdonotmeltcompletely.TheAdditionalMeltTimesettingintheSetTempmenuallowstheinstallertosetadditionmeltingtimeafterthesensorisdry.

FormanyresidentialapplicationsitistoocostlytoIdlethesnowmeltsystemallwinter.TheStormfeatureprovidesatemporarypre-heatinsystemswhereatekmarNet®UserSwitchorGatewayisinstalled.Stormcombinesthebenefitsofafastresponsetimetogetherwithloweroperatingcosts.Stormoperationdoesthisbyallowingtheusertoactivateatemporarypre-heatoftheslabintheeventofasnowfallwarning.Ifsnowisdetectedorthesystemismanuallystarted,thesnowmeltsystemheatstheslabuptothemeltingtemperatureandcompletesameltingcycle.Shouldnosnowfallduringthestormtimeperiod,thecontrolexitsStormoperationandreturnstoOff.TheStormoperationissetupbysettingtheStormtemperatureandtheStormRunTimeintheSetTempmenu.TheStormoperationcanonlybeactivatedbyatekmarNet®UserSwitchorGateway.TorespondtoaUserSwitchorGateway,selectaStormGroupnumberfromto2.ThenprogramtheUserSwitchorGatewaysetpointenabletobethesameastheStormGroupnumber.PressingtheprogrammedUserSwitchbuttonwillnowactivatetheStormoperationonthesnowmeltingcontrol.OntheGateway483,activatingthestormgroupon

Melt

Away

StormPressStorm

theScenespageinturnenablestheStormoperation.TheGateway482includesasetpointenablecommandthatallowsahomeautomationsystemtoenabletheStormoperation.Checkwiththehomeautomationcompanytodetermineifthisfeatureissupported.

Additional Melting Time

Idle Operation

Storm Operation

FormoreinformationabouttekmarNet®UserSwitchesandGateways,visittekmarControls.com.


Duringwarmweather,theslabiswarmenoughtonaturallymeltsnoworice.ThecontrolhasaWarmWeatherShutDown(WWSD)settingintheSetTempmenuthatpreventsthecontrolfromenteringMelt,IdleorStormoperationinordertoconserveenergy.ThecontrolshowsWWSDonthedisplaywhenWWSDisineffect.

Automatic (Auto)ThecontrolentersWWSDwhenboththeslabtemperatureofazoneandtheoutdoortemperatureexceedtheMelttemperaturesettingbymorethan2°F(°C).

Manual WWSDThecontrolentersWWSDwhentheoutdoorairtemperatureexceedstheWWSDsettingby°F(0.5°C)andwhentheslabtemperatureexceeds34°F(°C).ThecontrolexitsWWSDwhentheoutdoorairtemperaturefalls°F(0.5°C)belowtheWWSDsettingoriftheslabtemperaturefallsbelow34°F(°C).ThisallowstheMelttemperaturesettingtobesethigherthantheWWSD.Thisisusefulwhenhighslabtemperaturesarerequiredtomeltthesnoworice.Anexampleofthisareinstallationsusingpavingbricksontopofsandandconcretelayers.

Maintainingthemeltingoridlingtemperatureduringextremelycoldtemperaturesisnotonlyexpensivebutmaybeimpossibleiftheheatlossoftheslabexceedstheinputcapacityoftheheatingplantorelectriccable.ThecontrolturnsthesnowmeltingsystemoffwhentheoutdoorairtemperaturedropsbelowtheColdWeatherCutOut(CWCO)temperatureandtheslabisbelowfreezingasanenergysavingmeasure.ThecontrolshowsCWCOonthedisplaywhenCWCOisin

effect.WhenthetemperaturereachestheCWCOsettinginanactivelymeltingsystemwithan090,meltingissuspendeduntiltheoutdoortemperaturerisesabovetheCWCOsetting.Ifan090isnotinstalled,meltingispermanentlystoppedwhenCWCOisineffect.MeltingdoesnotresumewhenthetemperaturerisesabovetheCWCOsetting.

Scenesprovideaneasywaytosaveenergywhileawayonvacation,oroverrideaprogrammableschedulewhenplanschange.

Away key-------------------------------------------ThiscontrolincludesanAwayKeytoquicklydisablethesnowmeltingsystem,andwhenconnectedtoatekmarNet®system,canalsoturndowntheheatingtemperatureonallthermostatsandsuspendheatingthedomestichotwatertanktomaximizeenergysavings.ToturnontheAwayKey,gototheScenemenu.ToactivatetheAwayscene,touch“GoingAway”onthescreen.

Storm

Melt

AwayPressAway

SelectPERM(permanent)oranumberofdaysusingtheor arrow.Rangeisto80days.

Pressthehomebuttontoacceptthesettingorleavethescreenuntouchedforseveralseconds.“SceneAway”isdisplayedonthehomescreenuntilthenumberofdaysexpires.Touch“CancelAway”tocancelatanytime.

User Switch--------------------------------------AtekmarNet®UserSwitchavailablefromtekmarControlSystemsmaybeusedtoactivatetheAwayscene.

•

•

•

•

Additional Scenes--------------------------------Thesnowmeltingcontrolsupportsscenes(normal)2(away)and3(unoccupied).Scene3disablesthesnowmeltingsystem.WhenthetekmarNet®systemissettoscene4through8,thesnowmeltingcontrolremainsinscene.

Warm Weather Shut Down

Cold Weather Cut Out

Away Scene


Toprovidegreaterenergysavings,thecontrolcanoperateonaprogrammableschedule.Thescheduleisstoredinmemoryandisnotaffectedbylossofpowertothecontrol.IftekmarNet®communicationisdetectedthecontrolcanbecomeeitheraschedulememberorschedulemaster.

Zone Schedule--------------------------------------Thescheduleonlyappliestothecontrol.ThecontrolfollowsitsownscheduleandtheeventsarenotcommunicatedtothetekmarNet®system.

Master Schedule------------------------------------IfthecontrolisconnectedtoothertekmarNet®devices,thenthecontrolcanoperateonamasterschedule.AmaximumoffourmasterschedulesareavailableonthetekmarNet®

system.Usingmasterschedulessimplifyinstallationsinceonemasterschedulemaybeusedbymultipledevices.

To create a master schedule:AssignthecontroltobeaschedulemasterbysettingScheduleintheSchedulemenutoMaster(MST)to4.

•

To follow a master schedule:AssignthecontroltofollowamasterschedulebysettingScheduleintheSchedulemenutoMember(MBR)to4.

Schedule Types-------------------------------------Thescheduletypedetermineswhentheschedulerepeatsitself.Thiscontrolincludestwodifferentscheduletypes:•24Hour:Repeatsevery24hours.

•7Day:Repeatsonaweeklybasisandallowsforseparateeventtimesforeachday.

Events / DayTheevents/daycanbeeither4or2.Aneventisatimeatwhichthecontrolchangesthetargettemperature.Theeventtimecanbesettothenearest0minutes.Tohavethecontrolskiptheevent,enter“SKIP“asthetime.SKIPisfoundbetween:50PMand2:00AMor23:50and00:00hours.

•

Thecontrolhasabuilt-intimeclocktoallowthecontroltooperateonaschedule.Abattery-lessbackupallowsthecontroltokeeptimeforupto4hourswithoutpower.Thetime

clocksupportsautomaticadjustmentforDaylightSavingTime(DST)oncetheday,monthandyearareentered.UsetheTimemenutosetthecorrecttime,day,monthandyear.

Dividingasystemintoanumberofsnowmeltingzonesandprioritizingthezoneoperationreducesthesizerequirementsofthehydronicheatingplantortheamperageoftheelectricalservicepanel.Thisresultsinlowerinitialcapitalcostofthesnowmeltingsystem.Thetradeoffisthatsomesnowmeltzonesmaynotbeabletomeltassoonasthesnowfallbeginsandtheusermusttoleratesnowaccumulationontheslab.Thesnowmeltsystemmayhaveupto2snowmeltzones.Zonehasthehighestpriorityandzone2hasthelowest.TheprioritysettinginthetekmarNet®menuallowstheinstallertoselectthelevelofzonepriorityfortheentiresnowmeltsystem.Changingtheprioritysettingononecontrolwillupdateonallothersnowmeltcontrolsatthesametime.Thezonepriorityhas3settinglevels.Thereissomeriskthat

lowerpriorityzonesmayiceupwhentheyareshutoffbythehigherpriorityzone.Forexample,ifahighpriorityzoneshouldfinishmeltingandallowalowerpriorityzonetostartmelting,andthenanewsnowfalloccurs,thehighpriorityzonewillshutoffthelowerpriorityzones.Thismaypotentiallyallowthelowerpriorityzonestoiceover.Thelimitationsofzoningandusingprioritymustbecarefullyconsideredanddiscussedwiththebuildingownersandoccupantswhendesigningthesnowmeltingsystem.PrioritydoesnotapplywhentheapplicationmodeissettoBoiler.Inthismode,theboilerisdedicatedtoasinglesnowmeltingzonesopriorityisnolongerapplicable.

Programmable Schedules

Time Clock

Snow Melt Zones and Priority


Priority = NoneAllzoneshavethesamepriorityandcanoperateatthesametime.Thissettingisrecommendedwhentheboilerplantcapacityissizedlargerthantheheatlossofallzonesatdesignconditions.

Priority = ConditionalThezonewiththelowerprioritystartsmeltingwhenthezonewithhigherpriorityiswarmenoughtomeltsnoworice.Thissettingisrecommendedwhentheboilerplantcapacityissizedtobelargerthantheheatlossofeachzonewithsomeextracapacity.

Priority = FullThezonewiththelowerprioritystartsmeltingoncethezonewithhigherpriorityhasfinishedmeltingallsnoworicefromtheslab.Thissettingisrecommendedwhentheboilerplantcapacityissizedtobethesameastheheatlossofeachzoneatdesignconditions.

Hydronic Priority Levels--------------------------------------------------------------------------------

Electric Priority Levels---------------------------------------------------------------------------------Electricsnowmeltingoffersthreelevelsofpriority:None,ConditionalandFull.TheNoneandFullpriorityoptionsfunctionthesameaswiththehydronicoperation.TheConditionalpriorityisuniquetoelectricaloperation.Thehighestpriorityzoneoperatesfirst.Wheneverthehighestpriorityzoneshuts

offitsrelay,thelowerpriorityzoneisallowedtostartmeltingandcloseitsrelay.Onlyoneelectricalrelayisallowedtobeonatanytime.Thiseliminateslargeinstantaneousdemandsandavoidssurchargesfromtheelectricalutility.

Zone 1

MELT

OFF

Zone 2

MELT

OFF

Zone 1

MELT

OFF

Zone 2

MELT

OFF

Zone 1

MELT

OFF

Zone 2

MELT

OFF

Zone 1

MELT

OFF

Zone 2

MELT

OFF

Zone 1 Relay

ON

OFF

Zone 2 Relay

ON

OFF


Inahydronicsnowmeltingsystem,theboilerorheatingplantcapacitymaybemuchlargerthantheloadofthesnowmeltingzones.Thiscanresultinlargetemperaturedifferentialsbetweenthesupplywatertemperatureandtheslabcreatinglargetensilestressesontheslab.Concreteisweaktotensileforcesandwhenrepeatedlyexposedtotensileloadstheconcretemaycrack.ThismaybepreventedbyselectingtheProtectSlabsettingintheSystemmenutoOn.Thecontrolmeasuresandlimitsthetemperaturedifferentialbetweenthesupplywaterandtheslab.

tensile stresses

Thesnowmeltingcontrolcanoperateeitheranelectricorahydronicsnowmeltingsystem.Ahydronicsystemcanbefurthercategorizedaseitherboiler,mixingorpulsewidthmodulationzoneoperation,aswellas,whethertheboilerplantisdedicatedornon-dedicatedforthesnowmeltingsystem.Adedicatedboileronlyprovidesheatforthesnowmeltingsystem.Anon-dedicatedboilerprovidesheatforthesnowmeltingsysteminadditiontothespaceheatingand/ordomestichotwatersystem.Thecontrolrequires

thatoneofthefollowingApplicationModesisselectedintheSystemmenu:

PWM PulseWidthModulationBOIL BoilerOperationMIX MixingOperationELEC ElectricalOperation090 TandemSnow/IceDetectionusingan090

•••••

Thecontroloperatestheheatrelayona20minutepulsewidthmodulationcycle.Theheatrelayinturnactivatesalinevoltageelectricalcontactortoenergizetheelectricalcableheaterinstalledintheslab.Theheatrelayontimeisdeterminedbythecalculatedslabtargetandbythemeasuredslabtemperaturereading.Astheslabtemperaturereachestheslabtarget,theontimepercycleoftheheatrelayis

reducedtopreventtheslabtemperaturefromovershooting.Ifnoslabsensorisinstalledtheheatrelayremainson00%ofthetimeuntiltheMeltoperationhascompleted.IdleandStormoperationarenotavailablewhenaslabsensorisnotinstalled.Theelectricoperationrequirestheinstallationofanoutdoorsensor.Aslabsensorishighlyrecommendedinordertoreduceoperatingcosts.

TheApplicationModeshouldbesettoPulseWidthModulation(PWM)whentheboilerorheatsourceisnon-dedicatedtothesnowmeltingsystemandthereisnomixingsystem.Thesnowmeltingsystemisconsideredtobeazonetogetherwithspaceheatingandthedomestichotwatersystem.Thecontroloperatestheheatrelayona20minutepulsewidthmodulationcycle.Theheatrelayinturnactivatesthehydronicheatingsystemzonepumporzonevalve.Theheatrelayontimeisdeterminedbythecalculatedslabtargetandbythemeasuredslabtemperaturereading.Astheslabtemperaturereachestheslabtarget,theontimepercycleoftheheatrelayisreducedtopreventtheslabtemperaturefromovershooting.

Ifnoslabsensorisinstalledtheheatrelayremainson00%ofthetimeuntiltheMeltoperationhascompleted.IdleandStormoperationarenotavailablewhenaslabsensorisnotinstalled.ThehydronicPWMoperationrequirestheinstallationofanoutdoorsensorandasupplysensor.ThesupplysensorisinstalledontheglycolantifreezesystemsupplypipeandallowsthecontroltoprovideSlabProtectionandaswellasSupplyZonePriority.Aslabsensorishighlyrecommendedinordertoreduceoperatingcosts.

TheApplicationModeshouldbesettoBoilwhenthesnowmeltingsystemhasadedicatedboilerorheatsource.Theboilerispipedprimary-secondarytothesnowmeltingloop,allowingtheboilertofireonandoffwhileallowingcontinuousflowthroughthesnowmeltingsystemloop.ThecontrolcalculatesaBoilerTargetbasedupontheSlabTargetwhichinturnisbaseduponthemeasuredoutdoortemperatureandtheMelt,IdleorStormtemperaturesetting.Thecontrolcanoperateaboilerinoneofsixdifferentmethods:modulatingboiler,stage,EMS,EMS2,controlandenable.TheBoiler

TargetisshownintheViewmenu.SettingsfortheboileroperationarelocatedintheBoilermenu.

Theboileroperator,oraquastat,remainsintheburnercircuitandactsasasecondaryupperlimitontheboilertemperature.Theboileraquastattemperaturesettingmustbeadjustedabove200°F(93.5°C)inordertopreventshortcyclingoftheburner.

Slab Protection

Application Modes

Electric Operation

Pulse Width Modulation Operation

Boiler Operation


Single Stage On/Off Boiler (1STG)-------------------ThecontrolturnsonorofftheheatrelaytofiretheboilerinordertomaintaintheBoilerTargettemperature.Theboilersupplytemperatureoperatesonadifferentialthatishalfaboveandhalfbelowtheboilertarget.ThestatusoftheboilerisshownbytheBoilRelayitemintheViewmenu.

Modulating Boiler (MOD)----------------------------Thecontrolcanoperateasinglehot-watermodulatingboilerusingtheModoutputandtheHeatcontact.Thecontroloperatestheboilerbyfirstswitchingtheheatcontacttoallowthemodulatingboilertogothroughtheignitionsequence(theheatcontactmaynotberequiredonallmodulatingboilers).A0-0V(dc)or4-20mAanalogsignalisthenusedtomodulatetheboilerfiringratestartingat50%(5V(dc)or2mAsignal)for30seconds.Afterthe30seconddelayhaselapsed,thecontrolwillthenallowtheboilertomodulatedowntotheMinimumModulationsettingandholdittherefortheModulationDelaytimesetting.Afterthemodulationdelayhaselapsed,thecontrolusesPIDlogictochangetheboilerfiringratesignalinordertosatisfytheboilertargettemperature.Whenthefiringratesignalisreduceddowntotheminimummodulatingsettingandtheboilersupplytemperatureexceedstheboilertargetby/2ofthedifferential,thecontrolwillshutofftheboilerburner.ThemodulatingsignaloutputisshownbytheBoilRateitemintheViewmenu.TheModulationDelaysettingisdeterminedbytheboilermanufacturer.Itistheamountoftimethattheburnermustoperatebeforetheinternalboilercontrolallowsanexternalsignaltooperatetheburner.TheMotorSpeedsetstherateatwhichthemodulatingelectricalsignalcanchange.FormostmodulatingboilerswithaECMfan,themotorspeedcanbesetto30seconds.Forcommercialboilerswithamodmotor,setthemotorspeedaccordingtothetimerequiredbythemodmotortotravelfromtheclosedtoopenposition.

EMS1------------------------------------------------TheEMSsignalisamethodforthesnowmeltingcontroltosendtheboilertargettemperaturetoatekmarBoilerControl268.Thecontrolprovidesa0-0V(dc)signalproportionaltotheboilertargetandturnsontheheatrelaytooperatetheboilertomaintaintheBoilerTargettemperature.

EMS1 Conversion Table

0-10 V (dc) Boiler Target

0 –––(OFF)

50°F(0°C)

2 68°F(20°C)

3 86°F(30°C)

4 03°F(39°C)

5 2°F(49°C)

6 39°F(59°C)

7 57°F(69°C)

8 74°F(79°C)

9 92°F(89°C)

0 20°F(99°C)

EMS2------------------------------------------------TheEMS2signalisamethodforthesnowmeltingcontroltosendtheboilertargettoaViessmannboilerthatsupportstheOpenThermtemperaturetargeting.TypicalboilersincludetheViessmannVitodens00-W.TheboilermayrequireanOpenThermInputModule0-0V.ContactViessmannfordetails.Thecontrolprovidesa0-0V(dc)signalproportionaltotheboilertargetandturnsontheheatrelaytooperatetheboilertomaintaintheBoilerTargettemperature.

Control (CTRL)--------------------------------------WhentheApplicationModeissettoMixortoPWM,thesnowmeltingcontrolcansendacallforheatmessageusingtekmarNet®communication.OnlytekmarNet®capablecontrolsmanufacturedbytekmarControlSystemswillrespondtothistypeofheatcall.Thecallforheatisreceivedonthewatertemperaturebusthatthesnowmeltingcontroliscommunicatingon.Whenwiredtoaboilerbus,thesnowmeltingcontrolcallsforheatontheboilerbus.ThesamelogicappliestothemixingandtankbusavailableonthetekmarNet®systemcontrol.Inmostcases,theBoilerTypeissettoControlwhenthesnowmeltingsystemhasanon-dedicatedboilerplant.Someboiler,houseandmixingcontrolsmanufacturedbytekmarControlSystemsdonotincludetekmarNet®communication.Todeterminewhichmodelsincludethisfeature,refertotheHVACSystemandMulti-StagingproductcomparisonpagesontekmarControls.com.

Enable (ENBL)---------------------------------------WhentheApplicationModeissettoMix,thesnowmeltingsystemmayhaveanon-dedicatedboilerplant.WhennotusingtekmarNet®communication,theheatrelaycloseswheneverthemixingdeviceisincreasingandreachesapositionorspeedof0%.Theheatrelayopenswhenthemixingdeviceisdecreasingandreachesapositionorspeedof5%.


TheApplicationModecanbesettoMixwhenamixingvalveoramixinginjectionpumpisinstalledtoregulatethesupplywatertemperaturetothesnowmeltingsystem.Theboilerorheatplantcanbeeitherdedicatedornon-dedicatedtothesnowmeltingsystem.Themixingdevicepositionorspeediscontrolledbyananalog0-0V(dc)ora4-20mAsignalsothatthesupplytemperaturemaintainstheMixTargettemperature.ThecontrolcalculatesaMixTargetbasedupontheSlabTargetwhichinturnisbaseduponthemeasuredoutdoortemperatureandtheMelt,IdleorStormtemperaturesetting.TheMixMaximumsettinglimitstheuppertemperatureoftheMixTarget.TheMixTargetisshownintheViewmenu.BoilerprotectionisonlyavailablewhenthesnowmeltingcontrolisconnectedtoatN4SystemControl.ThetN4SystemControlprovidestheoutdoortemperaturetothesnowmeltingcontrolusingtekmarNet®communication.SeeBoilerOperationsectionregardingrecommendedtN4SystemControls.ThemixingdeviceprovidesboilerreturnprotectiontotheboilerinletbyclosingthevalvewhentheboilerreturntemperaturefallsbelowtheBoilerMinimumsetting.Boilerreturnprotectionrequirestheinstallationofaboilerreturnsensor082ontheinlettotheboilerandtheOutdoor/BoilerReturnSensorsettingmustbesettoBoilerReturn.

Mixing Valve and Actuator Motor--------------------The654providesa0-0V(dc)signaltooperateanactuatormotorformixingusinga3or4-waymixingvalve.

Recommended Mixing Injection Pumps-------------Thecontrolprovidesa0-0V(dc)or4-20mAsignaltooperateamixingdevice.Inlargecommercialapplications,aVariableFrequencyDrive(VFD)thatcanaccepta0-0V(dc)or4-20mAcanbeusedtovarythespeedofthemixinginjectionpump.Forresidentialandsmallercommercialapplications,specializedwetrotor,split-capacitorpumpsthataccepta0-0V(dc)signalareavailablefromGrundfosandTaco.Therecommendedmodelsarelistedinthetablebelow.

Taco GrundfosFlow Rate

GPMTurns open of the Globe

Valve

Nominal Pipe Diameter

003-VV 007-VV 0010-VV 0012-VV UP 15-42 F/VS

UP 26-64 F/VS

.5-2.0 20 /2" X X

2 00 /2" X

3.0-4.5 00 /2" X X

4-5.5 00 3/4" X

7.5-8.5 00 3/4" X X

2-3 00 " X X

9-2 00 -/4" X X

3-32 00 -/2" X

39-42 00 2" X

RequiredTaco00-VVcontrolsettings:

DIP Switch DIP Switch Position Description ON Operatesusingalinearoutputcharacteristic

2 OFF Automaticoperation

3 OFF Operatesusinga0-0V(dc)signal

RequiredGrundfosVScontrolsettings:

DIP Switch DIP Switch Position DescriptionA OFF OperatesusingaV(dc)signal

B OFF Operatesusing0-0V(dc)range

C ON Minimumspeedisoff

D ON Speedcontrolexternal

Mixing Operation


Variablespeedinjectionsystemsrequirecompleteisolationbetweentheboilerloopandsystemloop.Forexample,whentheinjectionpumpisturnedoff,theremustbenoheattransferfromtheboilerlooptothesystemloop.Inordertoavoidthisunwantedheattransfer,standardprimary-secondarypipingtechniquesareusedasshown.

BoilerLoop

(Tb) (Ts)

SystemLoop

BalancingValve

Ts

VariableSpeedInjectionPump

Piping of Variable Speed Injection Systems

Thispipingarrangementrequiresthattheinjectionpipingbeatleastonepipediametersmallerthanthepipingoftheboilerandsystemloops.Theteesintheboilerandsystemloopsmustbecloselyspaced(notexceeding4pipediameters)inordertopreventghostflowwhenthevariablespeedinjectionpumpisoffandeithertheboilerpumporsystempumpison.(referto A )

Theremustbeatleast6pipediametersofstraightpipeoneithersideoftheteesinordertopreventthemomentumofwaterintheboilerandsystemloopsfrompushingflowthroughtheinjectionloop.(referto B )

Thereshouldbeaminimumfootdroptocreateathermaltrapinordertopreventconvectiveheattransferthroughtheinjectionloop.(referto C )

•

•

•

•Tb =BoilersupplytemperatureTs =SystemsupplytemperatureΔTs =Systemtemperaturedrop(Typically20°Fforconvectorsand0°F

forradiantfloorheating)

Injection Panel Thispanelshowsatypicalpipingarrangementforavariablespeedinjectionpumpsystem.

P=BoilerPumpP2=VariableSpeedInjectionPumpP3=SystemPumpS=BoilerSensorS2=SupplySensorV,V2=GlobeValve

P1

P2

P3

S1

S2

V1

V2


ExampleSTEP Tb=60°F Ts=30°F ΔTs=0°F(radiantfloorheating) SystemFlowRate=5GPMSTEP2 Tb-Ts=30°FSTEP3 FlowRatio=0.25(seechart)

STEP4 InjectionFlowRate=3.75GPM(5GPMx0.25)STEP5 Useglobevalveinordertocontrolflow

(recommended).STEP6 Refertothepumpmodeltableonpreviouspage.

Lookuptherangeofdesiredinjectionflowrate(3.0-4.5GPM—useeitherofthecheckedpumps).Leaveglobevalveintheopenpositionanduse0.5"pipediameter.

Design Procedure

STEP 1----------------------------------------------Determinethefollowingdesignvalues:

BoilerSupplyTemperature(Tb)SystemSupplyTemperature(Ts)SystemFlowRate(USGPM)andSystemLoopTemperatureDrop(ΔTs).Ifoneofthesevariablesisunknown,useEquationor2tocalculatetheothervariable.

STEP 2----------------------------------------------CalculateTb-Ts

STEP 3----------------------------------------------LookuptherequiredFlowRatiointhetablebelow.

•••

Equation 1SystemFlowRate(USGPM)

=DesignHeatingLoad(Btu/hr)

500xΔTs(°F)

Equation 2

ΔTs(F°) =DesignHeatingLoad(Btu/hr)

500xSystemFlowRate(USGPM)

Equation 3 DesignInjectionFlowRate(USGPM)=SystemFlowRate(USGPM)xFlowRatio

STEP 4----------------------------------------------CalculatethedesigninjectionflowrateusingEquation3.

STEP 5----------------------------------------------Decidewhetherornottoincludeabalancingvalveintheinjectionpiping.Abalancing(globe)valveallowsadjustmentwhentheinjectionpumpislargerthanneeded.Abalancingvalvealsoprovidesthepossibilityofmanualoperationoftheheatingsystembyturningtheinjectionpumpfullyonandadjustingthebalancingvalvetoobtainthedesiredsystemsupplywatertemperature.

STEP 6----------------------------------------------Theinjectionpipingsizeandmodelofpumptoinstallcannowbelookedupinthetableonpage45.

Tb - Ts

ΔTs (°F)

(°F)

0.40

0.00

0.20

.00

0.80

0.60

0 30 50 70 90

052025

Flow

Rat

io

20 40 60 80

0.0

0.30

0.50

0.70

0.90


Insystemswherereliabilityofthesnowmeltingsystemiscritical,itispossibletoinstalltwoSnow/IceSensors090intoasinglesnowmeltzone.Bothsensorsareusedtodetectsnoworiceandifeithersensoriswetthesnowmeltingzonestartsmelting.Thezonecontinuestooperateuntilbothsensorsaredry.Thisallowssnoworicedetectionoverawiderarea.Intheeventofasensorfailure,thesnowmeltingzonecontinuestofunctionnormally,givingbuildingmaintenancestafftimetotroubleshootandreplacethesensorifnecessary.Inordertosetupazoneusingtandemsnow/icedetection:Step: InstalltwoSnowMeltingControls654eachhavingtheir

ownSnow/IceSensor090.Step2: Connectthetwo654togetherusingtekmarNet®

communication.Step3: InthetekmarNet®menu,selecttheSnowZonethatthe

654istooperate.Therecanbeupto2differentSnowZones.Both654controlsmustbesettothesameSnowZonenumber.

Step4: Ononeofthe654's,settheApplicationModetoPWM,Boil,MixorElec.ThiscontrolistheSnowZoneMasteranditwilloperatethesnowmeltingequipment.

Step5: Ontheother654,settheApplicationModeto090.ThiscontrolistheSnowZoneMember.Thiscontrolmustbewiredtopower,tekmarNet®communication,andtheSnow/IceSensor090.

Thecontrolincludesanauxiliaryrelaythatcanbeconfiguredtobeeitherasystempumporanalertoutput.WhentheAuxiliaryRelaysettingintheSystemmenuissettoAlert,therelaycloseswheneverthereisalocalerrorcode.AnetworkerroronthetekmarNet®communicationsystemisnotconsideredalocalerrorcodeandtheAlertRelaydoesnotcloseifonlyanetworkerrorispresent.TheAlertRelayisconnectedtotheinputpowerRandprovidesa24V(ac)poweredsignalwhenclosed.Anisolationrelaymaybeinstalledifadrycontactswitchisrequiredonthe3rdpartyequipment.

Inahydronicsnowmeltingsystem,thecontroloperatesthesystempumpaswellasthemixingvalveormixinginjectionpumpevery3daystopreventpumpandvalveseizure.

Afterazonehasfinishedheating,theboilerorheatsourceisshutoffandthezonecontinuestooperatefor20secondstopostpurgeheatfromtheboilertothezone.

Snow Zone 1Master

OperatesSnowMelting

Equipment

Snow Zone 1Member

AppMode090

App ModePWM, Boil,Mix, Elec

tekmarNet®Communication

SnowZone

Tandem Snow / Ice Detection

Exercising

Alert Relay

Pump Post Purge


AtekmarNet®UserSwitch480or48canbeprogrammedtoallowausertoremotelyactivateordeactivatethestorm,melt,andawayoperationsofthesnowmeltingcontrol.TheUserSwitchhasthreebuttonsanditisrecommendedtohavethetopbuttonsetuptostartorstoptheStormoperation,themiddlebuttonstartorstoptheMeltoperationandthebottombuttonselectsifthesceneisAwayorNormal.

Storm

Melt

Away

UserButton

1

UserButton

2

UserButton

3

BUTTON A

BUTTON B

ThesnowmeltingcontrolisabletorespondtoasetpointenablesignalfromatekmarNet®UserSwitchorGatewaytoremotelyactivateordeactivatethestormormeltoperation.ThetekmarNet®communicationsystemsupportssetpointenablesignalsthrough2.WhenthesnowmeltingcontrolreceivesasetpointenablesignalthatisthesameastheMeltGroupnumber,thecontrolentersMeltoperation.Likewise,ifthesnowmeltingcontrolreceivesasetpointenablesignalthatisthesameastheStormGroupnumber,thecontrolentersStormoperation.EachsnowmeltingcontrolhasitsownMeltGroupandStormGroupsettinglocatedinthetekmarNet®menu.

MeltGroupZone Zone2

MeltGroup2Zone3 Zone4

MeltGroup

1

MeltGroup

2

Setup Instructions----------------------------------The User Switch has a total of 5 buttons.UserButtons,2,and3allowforuserstoselecttheoperationofthetekmarNet®system.ButtonsAandBallowtheinstallertoprogramtheoperationofUserButtons,2,and3.TheUserSwitchtrimbezelmustberemovedtoprogramandmustbereinstalledafterprogrammingiscomplete.

Storm ButtonStep: Pressbutton“A”onceusingabluntobjecttobegin

programmingmode.Step2: PressandholdthetopbuttonuntilitturnsGreen,

thenletgo.Step3: ThesnowmeltingcontrolStormGroupdefaultis

2.PresstheUserSwitchtopbutton2timestosetthesetpointenableto2.ThebuttonshouldflashGreen2times,pause,thenrepeattheflashingsequence.

Step4: Pressbutton“B”tofinalizetheUserButtonsettingandexittheprogrammingmode.

Melt ButtonStep: Pressbutton“A”onceusingabluntobjecttobegin

programmingmode.Step2: PressandholdthemiddlebuttonuntilitturnsGreen,

thenletgo.Step3: ThesnowmeltingcontrolMeltGroupdefaultis.

PresstheUserSwitchmiddlebuttontimetosetthesetpointenableto.ThebuttonshouldflashGreentime,pause,thenrepeattheflashingsequence.


Away ButtonStep: Pressbutton“A”onceusingabluntobjecttobegin

programmingmode.Step2: PressandholdthebottombuttonuntilitturnsRed,

thenletgo.Step3: Theawayscenenumberis2.PresstheUserSwitch

bottombutton2timestosetthescenenumberto2.ThebuttonshouldflashRed2times,pause,thenrepeattheflashingsequence.


Melt and Storm Groups

User Switch Setup


TroubleshootingItisrecommendedtocompleteallwiringtoensuretroublefreeoperation.Shouldanerroroccur,simplyfollowthesesteps:. Find:Ifthecontrolflashes onthescreen,itisindicatingaproblemonthesystem.2.Identify:HoldtheHomebuttonfor3seconds,touchtheNEXTkeytolocatetheToolboxMenu,thentouchtheENTERkey.

Theerrorcodeshouldappearasthefirstitem.3.Solve:Usethechartbelowtomatchtheerrorcodetotheoneonthecontrol.Usethedescriptiontosolvetheproblem.

Error Message Description

SET TEMP MENU SAVE ERRORThecontrolfailedtoreadtheSetTempmenusettingsfrommemoryandhasreloadedthefactorydefaultsettings.ThecontrolstopsoperationuntilallsettingsintheSetTempmenuarechecked.Tocleartheerror,settheaccessleveltoInstallerandcheckallsettingsintheSetTempmenu.

SySTEM MENU SAVE ERRORThecontrolfailedtoreadtheSystemmenusettingsfrommemoryandhasreloadedthefactorydefaultsettings.ThecontrolstopsoperationuntilallsettingsintheSystemmenuarechecked.Tocleartheerror,settheaccessleveltoInstallerandcheckallsettingsintheSystemmenu.

BOILER MENU SAVE ERRORThecontrolfailedtoreadtheBoilermenusettingsfrommemoryandhasreloadedthefactorydefaultsettings.ThecontrolstopsoperationuntilallsettingsintheBoilermenuarechecked.Tocleartheerror,settheaccessleveltoInstallerandcheckallsettingsintheBoilermenu.

MIXING MENU SAVE ERRORThecontrolfailedtoreadtheMixingmenusettingsfrommemoryandhasreloadedthefactorydefaultsettings.ThecontrolstopsoperationuntilallsettingsintheMixingmenuarechecked.Tocleartheerror,settheaccessleveltoInstallerandcheckallsettingsintheMixingmenu.

tekmarNet® MENU SAVE ERRORThecontrolfailedtoreadthetekmarNet®menusettingsfrommemoryandhasreloadedthefactorydefaultsettings.ThecontrolcontinuestooperatebutdoesnotprovideanytekmarNet®featuresuntilallsettingsinthetekmarNet®menuarechecked.Tocleartheerror,settheaccessleveltoInstallerandcheckallsettingsinthetekmarNet®menu.

SCHEDULE MENU SAVE ERRORThecontrolfailedtoreadtheSchedulemenusettingsfrommemoryandhasreloadedthefactorydefaultsettings.ThecontroloperateswiththeprogrammablescheduledisableduntilallsettingsintheSchedulemenuarechecked.Tocleartheerror,settheaccessleveltoInstallerandcheckallsettingsintheSchedulemenu.

SCENES MENU SAVE ERRORThecontrolfailedtoreadtheScenesmenusettingsfrommemoryandhasreloadedthefactorydefaultsettings.ThecontroloperateswiththeawayscenedisableduntilallsettingsintheScenesmenuarechecked.Tocleartheerror,settheaccessleveltoInstallerandcheckallsettingsintheScenesmenu.

MAXIMUM MELT TIME ERRORThecontrolhasoperatedinmeltingforthetimesetbyMaximumMeltDayssettinglocatedintheSystemmenu.Thiserrorisusuallycreatedwhenthereisamechanicalsystemfailureresultinginthesnowmeltslabnotheatingcorrectly.CleartheerrormessagebytouchingtheCancelkeywhileviewingtheerrormessage.UsetheManualOverridemenutomanuallycheckthateachcomponentofthemechanicalsystemisoperatingcorrectly.Ifnecessary,changetheMaximumMeltDayssettingtoalongertimeperiodortoOff.

tekmarNet® COMMUNICATION ERRORThetekmarNet®communicationbushaseitheranopenorashortcircuit.Theresultisthattherearenocommunications.CheckforloosewiresbetweentN4andC.CheckforshortcircuitsbetweenthetN4andCwiresontheHouseControl,WiringCenter,orZoneManager.CheckforcorrectpolaritybetweentheCandRwires.Theerrorclearsautomaticallyoncethewiringfaulthasbeencorrected.Toforcetheerrortoclearwhileallowingashortoropencircuittocontinue,touchtheCancelkey.

Error Messages (1 of 4)



ADDRESS TAkEN ERRORTwodevices(thermostats,setpointcontrols,snowmeltingcontrols)havebeenmanuallysettothesameaddress.ThedevicecontinuestooperatewiththiserrorbutdoesnotcommunicatewiththetekmarNet®system.Toclearthiserror,selectanunusedtekmarNet®addressorselectautomaticaddressing.

SNOW ZONE TAkEN ERRORTwosnowmeltingcontrolshavebeenmanuallysettothesamesnowzonenumberandoneofthecontrolsisNOTsettoAppMode090.Thecontrolcontinuestooperatewiththiserror.Toclearthiserror,selectanunusedsnowzonenumberorsettheAppModeto090.

APP MODE 090 ERRORTwosnowmeltingcontrolshavebeenmanuallysettothesamesnowzonenumberandbothofthecontrolsaresettoAppMode090.Toclearthiserror,selectanunusedsnowzonenumberorsettheAppModetoanythingotherthan090.

TANDEM 090 ERRORTherearetwoSnow/IceSensors090installedinthezoneandtheothersnowmeltingcontrol’s090hasasensorproblem.LocatetheothersnowmeltingcontrolandnavigatetotheToolboxmenutodetermineandcorrecttheproblem.Thecontrolcontinuestooperatewiththiserror.

DEVICE LIMITMorethan24devices(thermostats,setpointcontrolsandsnowmeltingcontrols)havebeenconnectedtothetekmarNet®communicationbus.Tocleartheerror,removeandrelocatedevicestootheravailablebusesuntilthedevicecountis24orless.

OUTDOOR SENSOR SHORT CIRCUIT ERRORDuetoashortcircuit,thecontrolisunabletoreadtheOutdoorSensor070.Thecontrolcontinuestooperateandassumesanoutdoortemperatureof32°F(0°C).EnergysavingfeaturessuchasWarmWeatherShutDown(WWSD)andColdWeatherCutOut(CWCO)aredisabled.Checktheoutdoorsensorwireforshortcircuitsaccordingtothesensorinstallationmanual.Itmaybenecessarytoreplacetheoutdoorsensor.Oncetheerrorhasbeencorrected,theerrormessageautomaticallyclears.

OUTDOOR SENSOR OPEN CIRCUIT ERRORDuetoanopencircuit,thecontrolisunabletoreadtheOutdoorSensor070.Thecontrolcontinuestooperateandassumesanoutdoortemperatureof32°F(0°C).EnergysavingfeaturessuchasWarmWeatherShutDown(WWSD)andColdWeatherCutOut(CWCO)aredisabled.Checktheoutdoorsensorwireforopencircuitsaccordingtothesensorinstallationmanual.Itmaybenecessarytoreplacetheoutdoorsensor.Oncetheerrorhasbeencorrected,theerrormessageautomaticallyclears.

SUPPLy SENSOR SHORT CIRCUIT ERRORDuetoashortcircuit,thecontrolisunabletoreadtheSupplySensor082.WhensettoAppModeBoilerorMixingthecontrolstopsoperationanddoesnotprovideanyheat.WhensettoAppModePWMthecontrolcontinuesmeltingoridlingbutsupplypriorityoperationisnotavailable.Checkthesupplysensorwireforshortcircuitsaccordingtothesensorinstallationmanual.Itmaybenecessarytoreplacethesupplysensor.Oncetheerrorhasbeencorrected,theerrormessageautomaticallyclears.

SUPPLy SENSOR OPEN CIRCUIT ERRORDuetoanopencircuit,thecontrolisunabletoreadtheSupplySensor082.WhensettoAppModeBoilerorMixingthecontrolstopsoperationanddoesnotprovideanyheat.WhensettoAppModePWMthecontrolcontinuesmeltingoridlingbutsupplypriorityoperationisnotavailable.Checkthesupplysensorwireforopencircuitsaccordingtothesensorinstallationmanual.Itmaybenecessarytoreplacethesupplysensor.Oncetheerrorhasbeencorrected,theerrormessageautomaticallyclears.




BOILER RETURN SENSOR SHORT CIRCUIT ERRORDuetoashortcircuit,thecontrolisunabletoreadtheBoilerReturnSensor082.Thecontrolcontinuesoperationbutdoesnotprovideanyboilerreturnprotection.Checktheboilerreturnsensorwireforshortcircuitsaccordingtothesensorinstallationmanual.Itmaybenecessarytoreplacetheboilerreturnsensor.Oncetheerrorhasbeencorrected,theerrormessageautomaticallyclears.

BOILER RETURN SENSOR OPEN CIRCUIT ERRORDuetoanopencircuit,thecontrolisunabletoreadtheBoilerReturnSensor082.Thecontrolcontinuesoperationbutdoesnotprovideanyboilerreturnprotection.Checktheboilerreturnsensorwireforopencircuitsaccordingtothesensorinstallationmanual.Itmaybenecessarytoreplacetheboilerreturnsensor.Oncetheerrorhasbeencorrected,theerrormessageautomaticallyclears.

SLAB SENSOR SHORT CIRCUIT ERRORDuetoashortcircuit,thecontrolisunabletoreadtheSlabSensor072.IdlingandStormaredisabledandenergysavingfeaturessuchasWarmWeatherShutDown(WWSD)andColdWeatherCutOut(CWCO)areoperateusingtheoutdoortemperatureonly.Checktheslabsensorwireforshortcircuitsaccordingtothesensorinstallationmanual.Itmaybenecessarytoreplacetheslabsensor.Oncetheerrorhasbeencorrected,theerrormessageautomaticallyclears.

SLAB SENSOR OPEN CIRCUIT ERRORDuetoanopencircuit,thecontrolisunabletoreadtheSlabSensor072.IdlingandStormaredisabledandenergysavingfeaturessuchasWarmWeatherShutDown(WWSD)andColdWeatherCutOut(CWCO)areoperateusingtheoutdoortemperatureonly.Checktheslabsensorwireforopencircuitsaccordingtothesensorinstallationmanual.Itmaybenecessarytoreplacetheslabsensor.Oncetheerrorhasbeencorrected,theerrormessageautomaticallyclears.Iftheslabsensorhasbeenintentionallyremoved,settheslabsensorsettingintheSystemmenutoOff.

yELLOW WIRE OPEN CIRCUIT ERRORDuetoanopencircuit,thecontrolisunabletoreadtheyellowwireconnectedtotheSnow/IceSensor090ortheSnowSensor095.Thecontrolcannolongerautomaticallydetectsnoworicebutmanualstartofthesnowmeltingsystemisstillavailable.ChecktheSnow/IceSensororSnowSensoryellowandblackwiresandanywiresplicesforopencircuitsaccordingtothesensorinstallationmanual.Itmaybenecessarytoreplacethesensor.Oncetheerrorhasbeencorrected,theerrormessageautomaticallyclears.

BLUE WIRE SHORT CIRCUIT ERRORDuetoashortcircuit,thecontrolisunabletoreadthebluewireconnectedtotheSnow/IceSensor090ortheSnowSensor095.Thecontrolcannolongerautomaticallydetectsnoworicebutmanualstartofthesnowmeltingsystemisstillavailable.FirstchecktheSnow/IceSensororSnowSensorfordirtordebris.Theringstructureofthesensormayneedcleaningwithhotsoapywaterandanylonbrush.Rinsewithwater.Secondly,checktheSnow/IceSensororSnowSensorblueandblackwiresandanywiresplicesforshortcircuitsaccordingtothesensorinstallationmanual.Itmaybenecessarytoreplacethesensor.Oncetheerrorhasbeencorrected,theerrormessageautomaticallyclears.

BLUE WIRE OPEN CIRCUIT ERRORDuetoanopencircuit,thecontrolisunabletoreadthebluewireconnectedtotheSnow/IceSensor090ortheSnowSensor095.Thecontrolcannolongerautomaticallydetectsnoworicebutmanualstartofthesnowmeltingsystemisstillavailable.ChecktheSnow/IceSensororSnowSensorblueandblackwiresandanywiresplicesforopencircuitsaccordingtothesensorinstallationmanual.Itmaybenecessarytoreplacethesensor.Oncetheerrorhasbeencorrected,theerrormessageautomaticallyclears.

BROWN WIRE SENSOR OPEN CIRCUIT ERRORDuetoanopencircuit,thecontrolisunabletoreadthebrownwireconnectedtotheSnow/IceSensor090.IdlingandStormisdisabledandenergysavingfeaturessuchasWarmWeatherShutDown(WWSD)andColdWeatherCutOut(CWCO)areoperateusingtheoutdoortemperatureonly.ChecktheSnow/IceSensorbrownandblackwiresforopencircuitsaccordingtothesensorinstallationmanual.Itmaybenecessarytoreplacethesensor.Oncetheerrorhasbeencorrected,theerrormessageautomaticallyclears.




SNOW / ICE SENSOR ERRORThecontrolisunabletoproperlydetecttheSnow/IceSensor090.Thecontrolcannolongerautomaticallydetectsnoworicebutmanualstartofthesnowmeltingsystemisstillavailable.ChecktheSnow/IceSensorbrown,yellow,redandblackwiresaccordingtothesensorinstallationmanual.Itisimportanttocheckanycablesplicesforloosewiringconnections.Itmaybenecessarytoreplacethesensor.Oncetheerrorhasbeencorrected,theerrormessageautomaticallyclears.

SNOW SENSOR ERRORThecontrolisunabletoproperlydetecttheSnowSensor095.Thecontrolcannolongerautomaticallydetectsnowbutmanualstartofthesnowmeltingsystemisstillavailable.ChecktheSnowSensoryellow,redandblackwiresaccordingtothesensorinstallationmanual.Itmaybenecessarytoreplacethesensor.Oncetheerrorhasbeencorrected,theerrormessageautomaticallyclears.

SCHEDULE MASTER ERRORTwodevicesonthetekmarNet®systemhavebeensettothesameScheduleMasternumber.Thecontroloperatesaccordingtothelocalprogrammableschedulewhilethiserrorispresent.Tocleartheerror,selectadifferentScheduleMasternumber,setadifferentScheduleMembernumber,settheScheduletoZone,orsettheScheduletoNone.

SCHEDULE MEMBER ERRORThecontrolcannolongerdetectitsschedulemaster.Thecontroloperatesasiftheprogrammablescheduleisinidleoroffoperationwhilethiserrorispresent.Tocleartheerror,selectadifferentScheduleMembernumber,settheScheduletoZone,orsettheScheduletoNone.

ERROR AT THERMOSTATThereisanerroronadifferentthermostat,setpointcontrolorsnowmeltingcontrolconnectedtothetekmarNet®systemandnotonthiscontrol.0to24=ThereisanerroronathermostatorsetpointcontrolwiththistekmarNet®address.

ERROR AT THERMOSTATThereisanerroronadifferentthermostat,setpointcontrolorsnowmeltingcontrolconnectedtothetekmarNet®systemandnotonthiscontrol.b:0tob:24=ThereisanerroronathermostatorsetpointcontrolwiredtotheboilercommunicationbuswiththistekmarNet®address.

ERROR AT THERMOSTATThereisanerroronadifferentthermostat,setpointcontrolorsnowmeltingcontrolconnectedtothetekmarNet®systemandnotonthiscontrol.:0to:24=ThereisanerroronathermostatorsetpointcontrolwiredtocommunicationbuswiththistekmarNet®address.

ERROR AT THERMOSTATThereisanerroronadifferentthermostat,setpointcontrolorsnowmeltingcontrolconnectedtothetekmarNet®systemandnotonthiscontrol.2:0to2:24=Thereisanerroronathermostatorsetpointcontrolwiredtocommunicationbus2withthistekmarNet®address.

ERROR AT THERMOSTATThereisanerroronadifferentthermostat,setpointcontrolorsnowmeltingcontrolconnectedtothetekmarNet®systemandnotonthiscontrol.3:0to3:24=Thereisanerroronathermostatorsetpointcontrolwiredtothemix3buswiththistekmarNet®address.

ERROR AT SySTEM CONTROLThereisanerroronthetekmarNet®systemcontrolconnectedtothetekmarNet®systemandnotonthiscontrol.



Symptom Look For... Corrective Action

LCD display is off Power to control Useelectricalmetertomeasure24V(ac)voltageoninputpowerRandC

terminals.

System pump always on Display shows Idle Idleoperationrequiresthatthesystempumpoperatecontinuouslywhilebelowthe

meltingtemperaturesetting.

Blue short Dirt or salt on snow/ice sensor

Thesnow/icesensorrequiresregularcleaning.Avoidusingroadsaltonthesnowmeltingslab.

Slab is above melt temperature

Slab Target Theslabisheatedtotheslabtarget.

Heat On not shownCheckwiringofthesystempump.Thesystempumpoperatescontinuouslyduringmelt,idleorstormoperation.Theheatsourcemustbewiredtooperatetogetherwiththeheatrelay.

System running with no snow

Idle IdlingheatstheslabwhenthetemperaturefallsbelowtheIdletemperature.

MeltDuringcoldweathercutout(CWCO),thesystemisshutoff.Ifshutoffduringameltcycle,thesystemresumesmeltingoncetheoutdoortemperatureisaboveCWCO.

Timed Melt Systemmanuallystarted.

Sched Melt Systemstartedonaprogrammableschedule.

Snow on slab but system did not start

Off Systemhasaprogrammablescheduleandisinevent2or4(unoccupied).

Off SystemhasbeenmanuallyStoppedandtheautomaticsnow/icesensorneverdried,therebypreventingthesystemtoautomaticallystart.

Item Setting

EVENT

EVENT2

EVENT3

EVENT4

Item Setting

SCHEDULE

EVENTPERDAY

24HOUR/7DAY

Job Record

Item Setting

UNITS

Item Setting

BACKLIGHT

Item Setting

SCENES

Item Setting

AWAYKEY

Frequently Asked Questions

Schedule Menu Settings

Display Menu Settings

Scene Menu Settings


Item Setting

MELTING

IDLING

STORM

MANUALMELTRUNTIME

ADDITIONALMELTTIME

Item Setting

STORMRUNTIME

WATERSENSITIVITY

WARMWEATHERSHUTDOWN

COLDWEATHERCUTOUT

Item Setting

APPLICATIONMODE

SNOW/ICESENSOR

SLABSENSOR

SLABPROTECTION

OUTDOORORBOILERRETURNSENSOR

Item Setting

ECONOMELT

tekmarNet®SYSTEMPUMP

AUXILIARYRELAY

MAXIMUMMELTTIME

Item Setting

BOILERTYPE

BOILERMODULATIONTYPE

BOILERMINIMUMMODULATION

BOILERMODULATIONDELAY

Item Setting

BOILERMOTORSPEED

BOILERDIFFERENTIAL

BOILERMINIMUM

Item Setting

MIXTYPE

MIXMOTORSPEED

Item Setting

MIXMAXIMUM

Item Setting

ADDRESS

SNOWZONE

TRACKZONE

MELTGROUP

Item Setting

STORMGROUP

PRIORITY

LOCALNETWORKGROUP

WARNING:ThisproductcontainschemicalsknowntotheStateofCaliforniatocausecancerandbirthdefectsorotherreproductiveharm.Formoreinformation:www.watts.com/prop65

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A Watts Water Technologies Company

USA:Springfield,MO•Tel.(800)276-249•Fax:(47)864-86•www.wattsradiant.comCanada:Burlington,ONT.•Tel.(905)332-4090•Fax:(905)332-7068•www.watts.ca

IOM-WR-Snow_Melting_Control-654328 ©203WattsRadiant

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.(b)AttheCompany’sdiscretionandattheowner’sexpense,shiptheProducttotheCompanyortheCompany’slocalrepresentativeordistributor.(c) ProvideproofthattheProductwasinstalledinaccordancewiththeapplicableProductInstallationManualandanyspecialwrittendesignorinstallationguidelines

bytheCompanyforthisproject.(d)ProvideproofthattheProductwasinstalledinaccordancewiththeNationalElectricalCode(NEC)ortheCanadianElectricalCode(CEC),andallapplicablelocal

buildingandelectricalcodes.(e)Providearetailsalesreceiptorproofofpurchase.

ThefollowingarenotcoveredbythisLimitedWarranty:(a)Anyincidentalorconsequentialdamage,includinginconvenience,lossoftimeorlossofincome.(b)AnylaborormaterialsrequiredtorepairorreplacetheProductthatarenotauthorizedinwritingbytheCompany.(c) Anylaborormaterialsrequiredtoremove,repairorreplacematerialsotherthantheProducts.(d)AnyfreightordeliverycostsrelatedtotheProductoranyrelatedelectricalproducts.

WattsRadiantassumesnoresponsibilityunderthisLimitedWarrantyforanydamagetotheProductcausedbyanytradespeople,visitorsonthejobsite,ordamagecausedasaresultofpost-installationwork.ThisLimitedWarrantyshallbeinvalidatedbyanyabuse,misuse,misapplicationorimproperinstallationoftheProducts.ThestaffattheCompanyisavailabletoansweranyquestionsregardingtheproperinstallationorapplicationoftheProductatthistoll-freephonenumber:800-276-249(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,203.ThiswarrantyappliestoallProductspurchasedafterthisdate.

Technical DataSnow Melting Control 654

Literature IOM-WR-Snow_Melting_Control_654,ES-WR-Snow_Melting_Control_654,IS-WR-Snow_Melting_Control_654,PG-WR-Snow_Melting_Control_654

Control Microprocessorcontrol.Thisisnotasafety(limit)control

Packagedweight .3lb.(590g)

Dimensions 5"Hx3-/4"Wx5/6"D(27x82x23mm)

Enclosure WhitePVCplastic,NEMAtype

Ambientconditions -4to22°F(-20to50°C),<90%RHnon-condensing,outdoorusepermittedwheninstalledinsideaNEMA3enclosure

Powersupply 24V(ac)±0%,60Hz,Class2,6VAstandby,00VAfullyloaded

Relaycapacity 24V(ac)2A,3.6Acombined

Modulatingoutput 0-0V(dc),500Ωminimumloadimpedance,4-20mAkΩmaxloadimpedanceSensors NTCthermistor,0k @77°F(25°C±0.2°C)ß=3892

-Included OutdoorSensor070andUniversalSensor082

-Optional type:072,082,090,09,095

installation & operation manual - floor heating & snow …€¦ ·...

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