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ERT30RTTriac

DigitalRoomThermostat

forUnderfloorHeating

withRemote/FloorInput

ProductCompliance

T

hisproductcomplieswiththeessentialrequirementsofthe

followingECDirectives:

•

Electro-MagneticCompatibilityDirective2004/108/EC

•LowVoltageDirective2006/95/EEC

•

ECMarkingDirective93/68/EEC

SAFETYINFORMATION

T

heseinstructionsareapplicabletotheSalusControlsmodel

statedonthefrontcoverofthismanualonly,andmustnotbe

u

sedwithanyothermakeormodel.

TheseinstructionsareintendedtoapplyintheUnitedKingdom

o

nly,andshouldbefollowedalongwithanyotherstatutory

obligations.

ThisaccessorymustbefittedbyaCompetentperson,and

installationmustcomplywiththeguidanceprovidedinthe

currenteditionsofBS7671(IEEWiringRegulations)andPart‘P’

oftheBuildingRegulations.Failuretocomplywiththe

requirementsofthesepublicationscouldleadtoprosecution.

AlwaysisolatetheACMainssupplybeforeopeningor

removingtheunitfromthewallorwallbox.

Pleaseleavetheseinstructionswiththeenduserwherethey

shouldbekeptinasafeplaceforfuturereference.

INTRODUCTION

Athermostatisadevicethatisusedtoswitchtheheating

systeminyourhomeonandoffasneeded.Itworksbysensing

theairtemperatureandswitchingontheheatingwhentheair

temperaturefallsbelowthethermostatsetting,andswitching

itoffoncethesettemperaturehasbeenreached.

TheERT30RTfromSalusControlsisastylishandaccuratedigital

roomthermostatthatisfittedwithalargeeasytoreadLiquid

CrystalDisplay(LCD).TheERT30RThasbeenspecifically

designedtobeusedwithunderfloorheatingsystems.

Abacklightandfrostfunctionaddtothefeaturesofthe

ERT30RT.

FEATURES

•Remote/Floortemperatureinput

•ValveProtection

•Large,easytoreadLCDwithorangeBacklight

•Stylishcasing

•Userfriendly

•Frostprotection

•Resetbutton

•Willoperateupto5thermalactuators

•SelectableSetBack2ºC/4ºC

Installation

Pleasereadtheimportantsafetyinformationatthestartofthis

manualbeforeyoubegintoinstallthedevice.Theidealposition

tolocatetheERT30RTdigitalroomthermostatisabout1.5m

abovefloorlevel.Itshouldbemountedinalocationwherethe

thermostatiseasilyaccessible,reasonablylitandfreefrom

extremesoftemperature.Loosenthescrewwhichislocatedon

thebottomofthehousing.Openthehousingbypullingthe

bottomofthecoverthenliftoff.Nowmountthebaseplate

withthesuppliedscrewsfirmlytothewallorontotheflush-

mountedwallbox.

ERT30RTnotonlyworksbyitself,i.e.dipswitchsetting,but

a

lsocanbecontrolledbytwocontrolmethods,i.e.Night

Setbackbyclock,andCommunciationSignalfromERT52via

c

ommunicationterminal.

T

heelectricalconnectionstotheERT30RTaremadetothe

i

nternalterminalstrips.Connectiondetailsareshownbelow-

noEarthconnectionisrequiredforthecorrectandsafe

o

perationofthethermostatasthedeviceisdoubleinsulated.

TerminalConnections

T

erminalDescriptionTerminalBlock

S

witchedOutput

L

MainsLive

N

MainsNeutral

Temperaturesetback(230VACinput)

TerminalDescription

S

1Remote/Floortemperaturesensorterminal1

S

2Remote/Floortemperaturesensorterminal2

R

emote/FloorSensor10KNTCType

A

fterinstallingtheERT30RTinasuitablelocation,wiring

c

onnectionscanbemadeasshownabove.Thefollowingcriteria

applytotheinstallation:

•

TheincomingACmainssupplyshouldbe230VAC

a

ndfusedat6Amps.

•Optimumcablesizeforinstallationis1.5squaremm;wiring

c

oloursshouldbeinaccordancewiththecurrentrequirements

oftheIEEWiringRegulations.

•

Allwiringconnectionsshouldbesecurelymade,andbefirmly

terminatedwithineachoftheterminalscrewclamps.

Donotrestorethemainssupplytothesystemuntilallassociated

i

temsarefullyinstalled.

N

OTE:Allelectricalinstallationworkshouldbecarriedoutbya

suitablyqualifiedElectricianorothercompetentperson.Ifyou

a

renotsurehowtoinstallthisthermostatconsulteitherwitha

qualifiedelectrician,heatingengineeroryourboiler/heating

systemsupplierforadviceonhowtocontinue.

D

onotremoveorrefittheERT30RTwiringwithoutthe

mainssupplytothesystembeingisolated.

DIPSwitchSettings

C

hangestotheDIPSwitchsettingsshouldonlybemadebythe

EngineercarryingouttheinstallationorAnotherqualified

person.TheseDIPswitchesarelocatedinsidetheunit.Follow

stepsintheinstallationsectiononhowtoopentheunit.

Theinstallershouldselecttheswitchpositionsrequiredif

changesneedtobemadetothefactorydefaultsettings.

SwitchPositionFunction

SensorModeSelection

IntR/FInt+F

Int:InternalAirSensoronly(default)

R/F:FloororRemoteSensoronly

Int+F:InternalAirandFloor

Sensormode.

SwitchPositionFunction

System

CoolHeat

Heat–HeatingMode(default)

Cool–Willsetsystemto

coolingmode

SetBack

TemperatureºCreductioninheatmode

2ºC4ºC

TemperatureºCriseincoolmode

OutputControlType

On/OffPWM

PWM–PWMoutput(default)

On/Off-Switchtoon/offmode

ValveProtection(VP)

DisableVP

VP-Enable(default)

Disable-DisablesVP

N.B:IftheSystemDIPswitchissetto‘Cool’,PWMmodeis

automaticallydisabled.InthiscasetheERT30RTwillonly

operateinOn-Offmode,eveniftheOutputControlDIPswitch

issetforPWMmode.

AfterInstallation

Aftercompletinginstallationandpoweringup

theERT30RTforthefirsttimethethermostat

willbehaveinthefollowingway:

Alltheindicatorsonthedisplayandthebacklightwillbeturned

onforafewseconds.Afterafewseconds,theERT30RTwillthen

operateinNormalmode(controlleroutputOFF),anddisplay

thecurrentroomtemperature.

Allthecontrollersettingswillbereturnedtothevaluesstored

inEEPROM.IftheResetButtonispressed,theERT30RTwill

behaveinthesamewayasdescribedabove,exceptthatany

previouslysavedusersettingswillbedeletedandoverwritten

withthedefaultsettings.

FunctionDefaultValueEEPROMBackup

OperationModeNormalNormal

R

oomTemperature22ºC,updated22ºC,updated

w

ithinafewsecondswithinafewseconds

A

llSetPoint10ºC-35ºCDependsonsetting

T

emperaturesstoredinEEPROM

F

loorLimitInternalAirSensor+Dependsonsetting

TemperatureFloorSensormode:storedinEEPROM

30ºC(heatingmode)

1

5ºC(coolingmode)

º

CIndicatorOnDependsonsetting

s

toredinEEPROM

F

rostSettingOffDependsonsetting

storedinEEPROM

HeatIndicatorHeatDependsonsetting

storedinEEPROM

O

utputOffOff

N

.B:PleasebeawarethatafteraReset,theERT30RToutputmay

turnONiftheroomtemperatureislowerthantheSetPoint

t

emperatureinheatingmode.

USERINTERFACEANDCONTROLS

T

hestatusandoperationoftheERT30RTcanbeclearlyseenon

t

helargeorangebacklitLiquidCrystalDisplay(LCD)-thisdisplay

allowstheusertoseeataglancethecurrentstatusofthe

h

eatingsystem.

T

herearefewusercontrolsfortheERT30RT,makingthe

controllerveryeasytooperate.Thesecontrolsareshownbelow,

a

longwithadescriptionofeachoftheirfunctions.

UserControlFunctionSummary

K

ey/OperationFunctions

M

INUS(-)keyDecreasestheselectedsetting

P

LUS(+)keyIncreasestheselectedsetting

RESETbuttonRestartstheERT30RT

Operation

A

spreviouslydescribed,theERT30RTis

configuredandadjustedbytheuseofan

intuitiveuserinterfacewithaminimal

n

umberofusercontrols,andthebacklitLCDgivesahighly

visible,easilyreadableindicationofthethermostatstatus.

LCDIndicatorFunctionSummary

IndicatorSymbolFunction

HEATIndicatesheatingmodeisactive

COOLIndicatescoolingmodeisactive

CRESCENTIndicatessetbacktemperaturemodeisactive

TEMPERATUREIndicateseithercurrentroomtemperature

orsetpointtemperature

FROSTIndicatesfrostprotectionmodeisactive

HEATINGIndicatesheatcontrolmodeisactive

CheckingtheSetTemperature

PressingeitherthePLUSorMINUSkeytwice

willdisplaythecurrentSetPoint

temperature:

Afterafewsecondswithoutakeypress,theERT30RTwillreturn

toNORMALmodeandwilldisplaythecurrentroom

temperature.

AdjustingtheSetPointTemperature

AdjustingtheSetPointtemperatureis

donewiththeERT30RTinNORMALmode.

PresseitherthePLUSorMINUSkeytwice

toentersettingmode.Afterdoingthis,the

displayedSetPointtemperaturewillflash:

PressthePLUSorMINUSkeytoincreaseordecreasetheSet

Pointtemperaturewithintherangeof10°Cto35°C,in0.5°C

steps.TheSetPointtemperaturewillstopflashingwhilebeing

adjusted,butwillflashagainoncethekeyisreleased.Pressing

andholdingthePLUSorMINUSkeyfortwosecondswill

increaseordecreasethesettingquickly.

ThethermostatwillreturntoNORMALmodeafterafew

secondsifnokeyispressed.

FrostProtectionMode

TheERT30RThasaFrostProtectionmode,

butthisisonlyactivewhenthethermostat

isoperatinginHeatmode.TheFrost

Protectionmodetemperatureispresetat

5ºC;thistemperatureisfactorysetandcannotbeadjusted.

ToenableFrostProtectionpressthePLUSandMINUSkeys

togetherforafewseconds,thenreleasethem.Thedisplaywill

thendisplaytheFrostProtectionSetPointandFrosticon:

TodisableFrostProtectionandreturnthethermostatto

NORMALmode,pressthePLUSandMINUSkeystogetherfora

fewseconds.

ModelNo:ERT30RT

T

erminal

B

lock

A

djustingtheOffsetTemperatureSetting

T

heOffsettemperaturesettingcanbe

r

eviewedoradjustedbyenteringtheOffset

T

emperatureSettingmode.Thisisdoneby

pressingthePLUSandMINUSkeystogether

f

orafewseconds.Thedisplaywillchange

anddisplay‘Set’,asshownhere:

T

oreleasethekeysreviewtheOffset

t

emperature,presseitherthePLUSorMINUS

k

ey;thedisplaywillchangetoshowthe

currentOffsettemperature:

ThethermostatwillreturntoNORMAL

m

odeafterafewsecondsifnokeyis

p

ressed.TochangetheOffsettemperature,

presseitherthePLUSorMINUSkeytoenter

t

heOffsettemperaturesettingmode:the

displayedtemperaturesettingwillthenflash

t

oshowthatitcanbechanged:

P

ressthePLUSorMINUSkeytoincreaseordecreasetheOffset

temperaturewithintherangeof–3.5°Cto+3.5°C,in0.5°C

s

teps.TheOffsettemperaturewillstopflashingwhilebeing

adjusted,butwillflashagainoncethekeyisreleased.Pressing

a

ndholdingthePLUSorMINUSkeyforafewsecondswill

i

ncreaseordecreasethesettingquickly.

ThethermostatwillreturntoNORMALmodeafterafew

s

econdsifnokeyispressed.

S

ettingtheFloorLimitTemperature

T

heFloorLimittemperatureisactivewhentheERT30RTisset

forInternalAirSensor+FloorSensoroperation,andcanbeset

i

ntwomodes:heatingorcooling.

H

eating:

C

hangestothesettingsaremadeby

pressingthePLUSandMINUSkeystogether

f

or7seconds.Thedisplaywillchangeand

display‘HL’andastaticHeatingicon,as

s

hownhere:

ReleasingthePLUSandMINUSkeyswill

thenallowtheERT30RTtochangetoa

f

lashingdisplayshowingthelastordefault

HighLimittemperaturesetting:

PressthePLUSorMINUSkeytoincreaseordecreasetheHigh

Limittemperaturein0.5°Csteps.TheHighLimittemperature

w

illstopflashingwhilebeingadjusted,butwillflashagainonce

thekeyisreleased.PressingandholdingthePLUSorMINUSkey

fortwosecondswillincreaseordecreasethesettingquickly.

ThethermostatwillchangetotheLowLimitsettingafterafew

secondsofnokeypresses,asshownhere:

Thedisplaywillshowthelastordefault

LowLimittemperaturesetting.Thiscanbe

changedinexactlythesamewayasthe

HighLimitsetting.

ThethermostatwillreturntoNORMALmodeafterafew

secondsifnokeyispressed.

Cooling:

IftheERT30RTissetforcoolingmode,

thereisnoHighLimitsettingtoadjust.

Changestothesettingsaremadeby

pressingthePLUSandMINUSkeystogether

for7seconds.Thedisplaywillchangeanddisplay‘LL’anda

staticFrosticon,asshownhere:

TheLowLimitsettingforCoolingcanbechangedinexactlythe

samewayaspreviouslydescribedforHeating.

FloorSensorErrorMode

TheERT30RThasaninbuiltsensorerrormode.Ifthethermostat

detectsafaultwiththefloorsensoranerrorcodewillbeshown

onthedisplay.Thedisplaywillalternatebetweentheerrorcode

andthecurrentroomtemperature.

DisplayDescription

Normaloperation–roomtemperaturedisplayed,backlightoff

ErrorE1–overfloortemperaturelimit,backlightoff

ErrorE2–floorsensoropencircuit,backlightflashes

ErrorE3–floorsensorshortcircuit,backlightflashes

Whenthesensorfaultisrepaired,thethermostatwillreturnto

NORMALmodeanddisplaythecurrentroomtemperature.

OTHERFUNCTIONSANDCONTROLS

Backlight

ThebacklightoftheERT30RTisswitchedonautomatically

wheneveranyofthekeysarepressed.Thebacklightwillremain

illuminatedforafewsecondsafterthelastkeypress.Ifthe

roomtemperatureishigherthan35°C,thebacklightwillblink

onandoff;thisblinkingeffectalsohappensifthethermostat

sensesthatthefloorsensorisdisconnectedorfaulty.

Thebacklightwillnotilluminateifthereisnomainssupplyto

thecontroller.

C

ontrolStatus

T

heERT30RTindicatesontheLCDthecontrolstatusbyusinga

s

electionofdisplayicons.

HeatControl:TheHEATiconisdisplayedwheneverheatcontrol

i

sactivated,alongwithananimatedflameicon.

C

oolControl:TheiconisdisplayedwhenevercoolcontrolCOOL

isactivated,alongwithananimatedfrosticon.

R

esetButton

R

esetstheThermostattorestorethesettingfrominternal

memory.

SetbackTemperature

T

heERT30RThasaprovisiontosetasetbacktemperature;

T

emperatureisreducedbyselectable2ºC/4ºCinheatingmode;

orincreasedbyselectable2ºC/4ºCincoolingmode.

TheSetbackfeaturewillonlyoperateifaconnectionismade

t

otheSetbackterminal.IftheterminalstateisHIGH(above

1

75VAC),theCrescentindicatorwillbeshownonthedisplay,

andtheSetbacktemperaturewillbeapplied.

SoftwareProtection

TheERT30RThasseveralprotectionfeaturesbuiltintothe

s

oftware.Thesefeaturesare:

•Theheatcontrolwillbeautomaticallyturnedoffiftheroom

t

emperatureishigherthan35°C,orifthefloorsensoris

faulty.

•Incoolmode,inbuiltshortcycleprotectionpreventsagainst

r

apidswitchingoftheoutputrelay:theminimumdelay

betweentherelaybeingonandoffis3minutes.

•WhenoperatinginInternalAirSensor+FloorSensormode,

t

heERT30RTwillturnofftheheatifthefloortemperatureis

greaterthantheHighLimitsetting(topreventanydamage

tothefloorsurface).Ifthefloortemperatureisbelowthe

L

owLimitsetting,thentheheatwillbeturnedon(tohelp

drythefloor,inforexampleabathroom).IftheERT30RTis

o

peratingincoolmode,thenthecoolingwillbeturnedoff

ifthefloortemperaturedropsbelowtheLowLimit.

TemperaturesoutsidetheOperatingRange

Temperaturesexceedingthemeasurablerangewillbeindicated

by‘HI’fortemperaturesabovetheupperlimit,and‘LO’for

temperaturesbelowthelowerlimit,asshownintheimages

below:

ValveProtectionFunction

TheValveProtection(VP)functionisprovidedasawaytoavoid

thecontrolvalvefromstickingorseizingwhennotbeingused

forlongperiods(e.g.duringthesummer).

ThisfunctionisenabledbysettingtheValveProtectionDIP

switchtotheenableposition.Whenenabled,theVPfunction

willturnonthethermostatoutputtooperatethecontrolvalve

foraperiodof5minuteseveryweek:theVPfunctionwillstill

operateeveniftheroomtemperatureishigherthan35°C,orif

thesensorsarefaultyoroutsideofthehighorlowlimits.

ENERGYTIP

Onewaytosetanduseyourroomthermostatistofindthe

lowesttemperaturesettingthatyouarecomfortablewith,and

thenleaveitsetatthistemperature.Youcandothisbysetting

theroomthermostattoalowtemperature,(forexample17°C)

andthenincreasingthesettingbyonedegreeeachdayuntil

youarecomfortablewiththeroomtemperature-youwon’t

havetoadjustthethermostatfurther,asadjustmentabovethis

settingwillwasteenergy:a1°Cincreaseintemperatureisequal

to3%ofyourheatingcosts.

Maintenance

TheERT30RTdigitalroomthermostatrequiresnospecial

maintenance.Periodically,theoutercasingcanbewipedclean

usingadrycloth(pleaseDONOTusesolvents,polishes,

detergentsorabrasivecleaners,asthesecandamagethe

thermostat).

Therearenouserserviceablepartswithintheunit;anyservicing

orrepairsshouldonlybecarriedoutbySalusControlsortheir

appointedagents.

S

houldtheERT30RTroomthermostatfailtofunctioncorrectly,

check:

•

MainssupplytotheERT30RTisswitchedon.

•

HeatingandCoolingsystemisswitchedon.

•

IftheERT30RTisstillnotfunctioningcorrectly,

presstheResetButton.

W

ARRANTY

S

alusControlswarrantsthatthisproductwillbefreefromany

d

efectinmaterialsorworkmanship,andshallperformin

accordancewithitsspecification,foraperiodoftwoyearsfrom

t

hedateofpurchase.SalusControlssoleliabilityforbreachof

thiswarrantywillbe(atitsoption)torepairorreplacethe

d

efectiveproduct.

S

ALUSControlsGmbH

D

eutschland

D

ieselstr.34

D

-63165MühlheimamMain

w

ww.salus-controls.deTel:06108825850

ProductSpecification

M

odel:ERT30RTTRIAC

Type:Non-programmableTriacversiondigital

r

oomthermostat

designedforunderfloorheatingapplications.

S

witchupto5thermalactuators.

O

peration

ControlMethod:

1

.PWMcontrol(default)

2.On–Offcontrol

TemperatureMeasurement

I

nternalAirSensororInternalRemote/Floor

A

irSensor+FloorSensorModeSensorOnlyMode

Temperature5.0ºC–45.0ºC(internalairsensor)5.0ºC–65.0ºC

measurement

range5.0ºC–65.0ºC

(

floorsensor)

T

emperature5.0ºC–45.0ºC(internalairsensor)5.0ºC–45.0ºC

displayrange

5

.0ºC–45.0ºC

(

floorsensor)

Temperature0.5ºC0.5ºC

display

resolution

S

etpoint10.0ºC–35.0ºC(internalairsensor)5.0ºC–45.0ºC

t

emperature(Frostmode5.0ºC)

range(Frostmode5.0ºC)

FloorLimitHeatmode:5.0ºC–45.0ºCNolimitsettingin

temperaturethismode

range(default30.0ºC)

Coolmode:5.0ºC–45.0ºC

(default15.0ºC)

Temperature0.5ºC0.5ºC

setting

resolution

Temperature-3.5ºCto+3.5ºCin0.5ºCsteps-3.5ºCto+3.5ºC

offsetin0.5ºCsteps

(default0ºC)

(default0ºC)

MemoryBackup

Type:Internalmemory(EEPROM)

Switching

SwitchingVoltage:230VAC/50Hz

SwitchingCurrent:Switchingcurrent0.2Aresistive

IP30Class2

Environment

OperatingTemperature:0ºCto+40ºC

StorageTemperature:-20ºCto+60ºC

SalusControlsplc,SalusHouse,DodworthBusinessParkSouth,

WhinbyRoad,Dodworth,BarnsleyS753SP

Tel:01226323961

www.salus-tech.com

Email:[email protected]

GB

SLGE3S2ERT30RTManual EN & DE:Layout 1 2/17/11 1:48 PM Page 1

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