installation and operating instructions - wolf...

3061847_1210 Subjecttomodifications GB

Installation and operating instructions

Control unit R3

Wolf GmbH · Postfach 1380 · D-84048 Mainburg · Tel. +49-8751/74-0 · Fax +49-8751/741600 · Internet: www.wolf-heiztechnik.de

3061847_12102

IndexSafetyinstructions ......................................................................3

Standards/Regulations .............................................................4

Installation/Electricalwork .................................................... 5-6

Commissioning ...........................................................................7

Controlunit/Function/Operation....................................... 8-10

Displaying/Modifyingcontrolparameters................................11

Contractorlevelparameters ............................................... 12-30

Parametersetupreport.............................................................31

Highlimitsafetycut-outchangeover ........................................32

Sensorresistances ...................................................................33

WiringdiagramboilercontrolunitR3 .......................................34

Specification .............................................................................35

Faultmessages ........................................................................36

33061847_1210

Safety instructions

Burnersupplycable

Boilersensor

Highlimitsafetycut-out

Earthterminal

Thermometer

Thefollowingsymbolsareusedinconjunctionwiththeseimportantinstructions concerning personal safety as well as operationalreliability.

"Safetyinstructions"areinstructionswithwhichyoumustcomplyexactly,topreventinjuryandmateriallosses.

Dangerthrough'live'electricalcomponents. NBSwitchOFFtheON/OFFswitchbeforeremovingthecasing.

NevertouchelectricalcomponentsorcontactswhentheON/OFFswitchisintheONposition.Thisbringsariskofelectrocution,whichmayresultininjuryordeath.

Themainsupply terminalsare 'live'evenwhen theON /OFFswitchisintheOFFposition.

Thisindicatestechnicalinstructionswhichyoumustobservetopreventmateriallossesandboilermalfunctions.

NB

3061847_12104

Standards / Regulations

Warnings - Never remove, bypass or disable safety and monitoringequipment.

- Only operate the system in perfect technical condition.Immediately remove / remedyany faultsanddamagewhichmayimpactonsafety.

- Alwaysensurethatcoldwaterismixedinwithhotwater,whentheDHWtemperatureissetabove60°Corwhenoperatingthepasteurisationsystem(65°C)(riskofscalding).

Maintenance / Repair - Regularly check the perfect function of all electricalequipment.

- Onlyqualifiedpersonnelmayremovefaultsorrepairdamage.

- OnlyreplacefaultycomponentsorequipmentwithoriginalWolfspareparts.

- Alwaysmaintain prescribed electrical protection values (seespecification).

AnydamageorlossresultingfromtechnicalmodificationstoWolfcontrolunitsisexcludedfromourliability.

NB

The boiler control unit complies with the following regulations:

ECDirectives

- 2006/95/EC LowVoltageDirective- 2004/108/EC EMCDirective

DIN/EN-Standards

EN60335-1,EN60730-2-9,EN14597,DIN3440,EN50165,EN55014-1

Observe the following regulations, rules and directives during installation:

- Theinstallationandcommissioningoftheheatingsystem- Regulationsoflocalutilities- DINVDE0100Regulations regarding the installation of high voltagesystemsupto1000V

- DINVDE105Operationofelectricalsystems- EN50156Electricalequipmentincombustionsystems- EN12828Heatingsystemsinbuildings

Appropriate use

TheWolfR3controlunitisdesignedexclusivelyforuseinconjunctionwithWolfboilers.TheR3controlunitisequippedwithatemperaturecontroller/limiterandahighlimitsafetycut-out.Weather-compensatedboilertemperaturecontrolforsinglestageburners.

Other applicable documents

Installation andoperating instructions for theboiler andall accessoriesused.

Installation / Commissioning

53061847_1210

Installation / Electrical work

Jointhepowersupplycabletotheplugsupplied.Insertthepluginto themarked-up location in theplug-in connector strip, andsecurethecablewithitsstrainrelief.Routethecablethroughtheboilerbackcutout.

Power supply connection

Electrical work

Mains230V

LP=Prim

arypump

A1=Program

mableoutput

KKP=Boilercircuitpum

p

eBU

SE1=Program

mableinput

SF=Cylindersensor

AF=Outsidetemp.sensor

VF=Flow

sensor

SFK

=N/A

MKP1=Mixercircuitpum

p1

MM1=Mixermotor1

Insertallplugsthatarenotusedintotheplug-instrip.Observethecolourcoding.InserttheyellowplugtogetherwiththejumperintoslotE1.

Info

Wheninstallingthiscontrolunitensurethatsensorcapillariesareneitherkinkednortwisted.Never route on-site sensor and remote control leads / cablestogetherwithmainspowercables.Implement the electrical wiring in accordance with the wiringdiagram.

Opentherearcontrolunitcoverafterreleasingbothscrews.

Burner supply cableGuideitthroughtheapertureinthecontrolunitbracket(l.h./r.h.),subjecttothesidetowhichtheboilerdooropens.

Boiler sensorInsertintoanyopeningoftheboilersensorwell.

High limit safety cut-outInsert sensor capillaries into any opening in the boiler sensorwell.

Earth terminalInsertintothecontrolunitpanel.

Thermometer for boiler water temperature displayInsertintoanyopeningoftheboilersensorwell.

Installation

Burnersupplycable

Boilersensor

Highlimitsafetycut-out

Earthterminal

Thermometer

3061847_12106

Pump connection Wolfboilercircuit,WolfmixercircuitandWolfcylinderprimarypumpsarefactory-fittedwithplugs.Routethecablethroughtheboilerbackcutout.Inserttheplugintothemarked-uplocationsin theplug-inconnectorstrip,andsecure thecableswith theirstrainrelief.

Installation / Electrical work

Outside temperature sensor

Jointheon-siteleadoftheoutsidetemperaturesensorwiththeplugsupplied.Inserttheplugintothemarked-uplocationintheplug-inconnectorstrip,andsecuretheleadwithitsstrainrelief.Route thecable through theboilerbackcutout.Fit theoutsidetemperature sensor to the north or northeast wall, 2 to 2.5mabovegroundlevel.

DHW sensor(accessory)

PushtheDHWcylindersensor(accessory)intothecylindersensorwell.Routetheleadthroughtheboilerbackcutout.Insertthepluginto themarked-up location in theplug-in connector strip, andsecuretheleadwithitsstrainrelief.

E1programmable input

JointhecableofinputE1withtheplugsupplied.Insertthepluginto themarked-up location in theplug-in connector strip, andsecurethecablewithitsstrainrelief.Routethecablethroughtheboilerbackcutout.

eBUS accessories Remotecontrol,radioclockmodule,radioclockmodulewithoutsidetemperature sensor, receiver for wireless outside temperaturesensorandwirelessanalogremotecontrol.Join the on-site accessory cablewith the green plug supplied(designatedeBUS).Inserttheplugintothemarked-uplocationintheplug-inconnectorstrip,andsecurethecablewithitsstrainrelief.Routethecablethroughtheboilerbackcutout.

Note:IfseveraleBUSaccessoriesaretobeconnectedsimultaneously,connecttheseinparallelattheeBUSterminal.

A1programmable output

JointhecableofoutputA1totheplugsupplied.Insertthepluginto themarked-up location in theplug-in connector strip, andsecurethecablewithitsstrainrelief.Routethecablethroughtheboilerbackcutout.

Mixer motor TheWolfmixeractuatormotorisfullywiredatthefactoryandfittedwithaplug.Routethecablethroughtheboilerbackcutout.Inserttheplugintothemarked-uplocationintheplug-inconnectorstrip,andsecurethecablewithitsstrainrelief.

Flow sensor Install the flow temperature sensor into themixer circuit flow,approximately 50 cmdownstreamof theheating circuit pump.Routetheleadthroughtheboilerbackcutout.Inserttheplugintothemarked-uplocationintheplug-inconnectorstrip,andsecuretheleadwithitsstrainrelief.

73061847_1210

CommissioningSwitchONthesystemON/OFFswitchatthecontrolunit.

ON/OFFswitch

TheheatingsystemstartstooperatewiththefactorysettingsassoonastheON/OFFswitchatthecontrolunitisswitchedON.

Note:Thefactorysettingsofthecontrolunitrepresentempiricalvalues.Subjecttosystemorequipmentlevel,controlparametersotherthanthosechosenatthefactorycanbeselected.Makechangesvia theWolfcontrolaccessoriesorviaaPC/ laptopwithWolfcontrolsoftware.Allfactorysettingsarestoredinanon-volatilememory.

Duringcommissioning,thecontrolunitautomaticallyrecognisesanyconnectedcylinder,flowand/oroutsidetemperaturesensor.

You can log off the cylinder sensor and the flow sensor bydisconnectingandresetting(atthecontrolunit).

Theboilerandtheoutsidetemperaturesensorscannotbeloggedoff.NB

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Control unit / Function / Operation

ON / OFF switch TheboilercontrolunitisOFFinposition0.Thereisnofrostprotection.

Fine-wire fuse M 6.3 A High limit safety cut-out (STB)

Operationonlybycontractors

eBUS connectionfor PC / Laptop

Thermometer

Reset button

Illuminated ring

ON / OFF switch

BM programming module

Illuminated signal ring as status indicator

Display ExplanationFlashinggreen Standby(powersupplyON,

noheatdemand)Constantgreenlight Heatdemand:pumprunning,burnerOFFFlashingyellow EmissionstestmodeConstantyellowlight BurnerON,flamesteadyFlashingred Fault

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Control unit / Function / Operation Reset button1.Resetsallparameterstotheirfactorysettings. - TheoperatingmodeswitchmustbesettoO(OFF). - Press and hold down the reset button whilst setting the

operatingmodeswitchtoI(ON). - Keepholdingdowntheresetbuttonforatleast2seconds

afterthesystemhasstarted.

2.Forresettingtheoilcombustionunit(onlyinconjunctionwiththerelevantWolfcomponents)

- Incaseofaburnerfaulttheoilcombustionunitisresetviaaresetrelaybypressingtheresetkey.Note: Resetgasfiredboilersincaseofaburnerfault directlyatthegascombustionunit,i.e.throughan openinginthesilencerhood.

Thermometertodisplaythecurrentheatingwatertemperature.

Fine-wire fuseM6.3AtoprotectthecontrolPCB.

eBUS connectionfordatatransferbetweenthecontrolunitandthePC/laptopwiththesoftwaresetforboilercontrolunits(accessory).

3061847_121010

Control unit / Function / Operation

The anti-seizing pump protection is generally activated at 12:00 h (midday). For this purpose, the heating circuit pumpoperatesforapprox.10secondsandthemixeropens.ThenthecylinderprimarypumpsandtheDHWcirculationpump(ifinstalled)will run for 20 seconds and themixer closes.This preventscomponentsfromseizingup.TheburnerwillbeswitchedOFFforapprox.twominutesifitisoperatingwhentheanti-seizingpumpprotectionisenabled.

Anti-seizing pump protection

High limit safety cut-out STBfactory-setto110°C;adjustableto100°C,ifrequired.

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Displaying / Modifying control parametersThe control parameters can only be modifi ed or displayed via the BM programming module. For procedures, check the operating instructions of the BM programming module.

Parameter overview(Settingsandfunctionsonthefollowingpages)

ModificationsmustonlythecarriedoutbyarecognisedheatingcontractororbytheWolfcustomerservice.

Incorrectoperationcanleadtosystemfaults.Please notewhen adjusting parameterA09 (frost protection / outsidetemperature), that frost protection is no longer safeguarded if you settemperatureslowerthan0°C.Thiscanresult indamagetotheheatingsystemandallitscomponents(e.g.pipes,radiators,etc.).

NB

NB

Parameter Setting range Factory settingA09 Frostprotectionlevel -20to+10°C +2°C

A10 ParallelDHWoperation 0/1/2 0

A14 MaximumDHWtemperature 60to80°C 65°C

HG01 Burnerswitchingdifferential(dynamic) 5 to 30 K 15 K

HG06 Pumpoperatingmode 0/1/2 0

HG07 Boilercircuitpumprun-ontime 0to30min 3min

HG08 MaximumlimitboilercircuitTV-max 40to90°C 75°C

HG09 Burnercycleblock 1to30min 4min

HG13 ProgrammableinputE1 1 to 11 1

HG14 ProgrammableoutputA1 0 to 14 0

HG15 Cylinderhysteresis 1 to 30 K 5 K

HG19 Cylinderprimarypumprun-ontime 0to10min 3min

HG20 Max.cylinderheatingtime 0to5h 2h

HG21 MinimumboilerwatertemperatureTK-min.* 38to90°C 38°C

HG22 MaximumboilerwatertemperatureTK-max. 50to90°C 80°C

HG24 DHWsensoroperatingmode 1/2/3 1

HG25 BoilerexcesstemperatureduringDHWcylinderheating

0 to 40 K 10 K

HG26 Boilersoftstart 0/1 1

HG32 Returntemperatureraising** 0to70°C 30°C

HG33 Hysteresistime 1to30min 10min

HG34 eBUSfeed 0/1/2 2

HG35 0-5Vinputfortelecontrolsystem 0/1 0HG50 Testfunktionen 1bis8 -HG70 Display

Multi-functioninputE1-50sensorshortcircuitorcontactclosed-60sensorleadbreakorcontactopenActualtemperatureheadersensorHG13=7ActualtemperaturereturnsensorHG13=11

MI 01 Minimummixercircuittemperature 0to80°C 0°C

MI 02 Maximummixercircuittemperature 20°Cto80°C 50°C

MI 03 Mixercircuitheatingcurvedistance 0 to 30 K 10 K

Mi 04 Screeddrying 0/1/2 0

MI 06 Mixercircuitpumprun-ontime 0to30min 3min

MI 07 Mixercircuitproportionalrange 5 to 40 K 12 K* setto50°Cforpressurejetgasburners** setto40°Cforpressurejetgasburners

3061847_121012

Contractor level parametersTheheatingcircuitpumpsrunconstantlyiftheoutsidetemperaturefalls below the selected value, and themixer regulates inaccordancewiththetemperatureselectedattheBMtoasetroomtemperatureof5°C.Theburnerstartsandheatstheboilertoamin.of38°C,iftheboilerwatertemperaturefallsbelow+5°C.

Note:Onlychangethefactorysettingifyoucanensurethattheheatingsystemand its componentswill not freeze up at low outsidetemperatures.

Frost protection limitParameter A09

A09

2.0

Factorysetting:2°CSettingrange:-20to+10°C

Individual setting: __________

Parallel DHW operationParameter A10

A10

0

Factorysetting:0Settingrange:0/1


Theheating circuit pumpsare switchedOFFand themixer isclosedduring cylinder heating in theDHW priority mode (0). Theboilerenergywill thenbeusedexclusively forheating theDHWcylinder.Thecylinderprimarypumpwillonlystart, if theboilerwatertemperatureis5°Chigherthantheactualcylindertemperature.Theburnershutsdown,theheatingcircuitpumpsstartandthemixeropens,assoonasthecylinderhasreacheditsset temperature.Thecylinderprimarypumprunsonfor themaximumperiodselectedunderparameterHG19(cylinderprimarypumprun-ontime).Theheatingcircuitpumpsandthemixercontinuetooperateinparallel DHW mode (1).The cylinder primary pump starts, iftheboilerwater temperature is 5 °Cwarmer than the cylindertemperature.Thecylinder is fullyheatedupwhen thecylinderhasreachedtheselectedwatertemperature.ThecylinderprimarypumprunsonforthemaximumperiodselectedunderparameterHG19(cylinderprimarypumprun-ontime).

IntheparallelDHWmode(1),theheatingcircuitcantemporarilybeoperatedatahighertemperature.

NB

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Contractor level parameters

TheburnerswitchingdifferentialregulatestheburnertemperaturewithinasetrangebyswitchingtheburnerONandOFF.ThehighertheON/OFFtemperaturedifferential,thehighertheboilerwatertemperaturefluctuationaroundthesetvalue,resultinginlongerburnerruntimesandviceversa.Longerburnerruntimesprotecttheenvironmentandextendtheservicelifeofwearingparts.

Fig.:Timesequenceofthedynamicburnerswitchingdifferentialforauser-definedburnerswitchingdifferentialof15Kandaselectedhysteresistime(parameterHG33)of10minutes.

Burnerruntime(min.)

Switchingdifferential(K) Selectedswitchingdifferential15K

Hysteresistime10minutes

Burner switching differential(dynamic)Parameter HG01

HG01

15

Factorysetting:15KSettingrange:5to30K


Maximum DHW temperatureParameter A14

A14

65.0°C

Factorysetting:65°CSettingrange:60to80°C


TheDHWtemperatureissetto65°Catthefactory.Thistemperaturecanalsobeenabledupto80°C,ifforcommercialreasonsahigherDHWtemperatureisrequired.

Ifpasteurisationhasbeenactivated(BM),theDHWcylinderwillbeheatedtotheselectedmaximumDHWtemperatureduringthefirstcylinderheatingoftheday.

Takeadequatemeasurestopreventscalding.SetparameterHG22(maximumboilerwatertemperature)atleast5KhigherthantheselectedmaximumDHWtemperature.NB

3061847_121014

Pump operating mode 0:Heating circuit pump for heating systems without cascade control and without low loss headerTheheatingcircuitpumprunsconstantlywhen there isaheatdemand.TheheatingcircuitpumpwillbeswitchedOFFduringDHWheating,ifDHWpriorityhasbeenselected.

Pump operating mode 1: Feed pump for heating systems with cascade control and / or low loss headerThefeedpumprunswitheveryheatdemand(heating/DHW)withpumprun-onaccordingtothesettingofparameterHG07.

Pump operating modeParameter HG06

HG06 0


Individual setting: __________Softstarting:AtTKIst < TKmin(38°C)feedpump"OFF".MKPandcylinderprimarypumpcontinuetorunwithsoftstarting.

Note: Increase the pump run-on time from3min to 15min. SettheparameterHG13to7.

Hydraulicscheme:

ZUP=FeedpumpSPL =CylinderprimarypumpPLP =BufferprimarypumpSF =CylindersensorSAF=HeadersensorMK1=MixercircuitMKP=Mixercircuitpump

Oil/gasboiler

SAF

ZUP

MKP

MK1

SPL

CylinderLowlossheaderorbuffercylinder

SF


153061847_1210

ZUP =FeedpumpSPLP=CylinderprimarypumpPLP =BufferprimarypumpSF =CylindersensorSAF =HeadersensorMK1 =MixercircuitMKP =Mixercircuitpump

MKP

MK1

Wood boiler Buffercylinder Oil/gasboiler

SAF

SFPLP

SPLP

Solarthermalsystemintegration

Pump operating mode 2:Buffer primary pump for BSP cylinderHeatingcircuitpumpbecomes feedpump.Theheadersensor(buffer)onlyaffectstheheatingoperation.Duringcylinderheating,thereferencetemperatureisprovidedbytheinternalboilersensor.Inheatingmode,thebufferprimarypumprunsonlywhenthereisaburnerdemand.Pumprun-oninaccordancewithparameterHG07.Soft starting:AtTKIst < TKmin (38 °C) buffer primarypumpandcylinder primary pump "OFF".MKPcontinues to runwith softstarting.Note: Increasethepumprun-ontimefrom3minto15min. SettheparameterHG13to7.

Hydraulicscheme:


3061847_121016


Each time theburner is shut down in heatingmode, itwill beblockedforthedurationoftheburnercycleblock.TheburnercycleblockisresetbyswitchingtheON/OFFswitchOFFandONorbybrieflypressingtheresetbutton.

Individual setting: ______

Burner cycle blockParameter HG09

HG09

4

Factorysetting:4minSettingrange:1to30min

Thisfunctionlimitstheboilerwatertemperatureupwardsinheatingmode,andtheburnershutsdown.Thisparameterhasnofunctionduring cylinder heating, and theboilerwater temperaturemayalsobehigherduringthistime.Re-heatingeffectscanresultinthetemperaturebeingexceededalittle.


Maximum limitBoiler circuit TV-max.Parameter HG08

HG08

75


Subjecttotherebeingnoheatdemandfromtheheatingcircuits,theboilercircuitpumpwillrun-oninaccordancewiththesettime,topreventaboilersafetyshutdownathightemperatures.


Run-on timeBoiler circuit pumpParameter HG07

HG07

3


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Contractor level parametersProgrammable input E1Parameter HG13

HG13

1

Factorysetting:1Settingrange:1to11

ThefollowingfunctionscanbeallocatedtoinputE1:

No. Explanation1 Roomthermostat

WithopeninputE1,heatingoperationwillbeblocked(summermode),independentofanydigitalWolfcontrolaccessories.Exception:Remotecontrolledheatingcircuits

2 MaximumthermostatInputE1mustbeclosedtoenabletheburner.Theburnerwillremainblockedforaslongasthecontactisopen,eveninemissionstestmode,cascademodeandinDHWandcentralheatingfrostprotectionmode.

3 N/A4 N/A5 Fluegasdamper/ventilationairdamper

Functionmonitoringofthefluegasdamper/ventilationairdamperwithfloatingcontact.Thecontactmustbeclosedtoenabletheburnerincentralheating,DHW,cascadeandemissionstestmode.

Important: A1 (HG14 = 7) must be programmed for fl ue gas damper/ventilation air damper function.

6 DHWcirculationpushbutton(onsite)Afteractivatingthisbutton,theDHWcirculationpumpisoperatedfor5minutes,independentofthetimeprogramorthepositionoftheprogramselector(BM).Important: In any case, output A1 must be

programmed to setting 13.

3061847_121018

No. Explanation

7 Centralsensor(lowlossheaderorbuffer)Inheatingmode,theboilerwatertemperaturecontrolisnolongergovernedbytheactualboilersensortemperature,butinsteadbythecentralsensor.Theboilerwatertemperaturesensorcontinuestomonitortheminimumandmaximumboilerwatertemperatures.

8 BurnerblockContactclosed,burnerblocked.Theheatingcircuitandcylinderprimarypumpsoperateinstandardmode,butwithoutsoftstart.Theburnerisenabledinemissionstestandinfrostprotectionmode.

9 N/A10 Externalburnerdemand,inputE1closed

(e.g.airheater,swimmingpooldemand,secondcylinderheatingviathermostat)Thesetboilerwatertemperatureissettothemaximumboilerwatertemperatureminus5Klimitedbythemaximumflowtemperature.Heatingcircuitandcylinderprimarypumpinstandardmode.Important: In any case, output A1 must be

programmed to setting 14.11 Returnsensor

OnlyinconjunctionwithparameterHG32(returntemperatureraising).Important: In any case, output A1 must be


NB NeveruseinputE1fortheconnectionofsafetyequipment(e.g.secondhighlimitsafetycut-out,lowwaterindicator,safetypressurelimiter).Forthisconnection,seetheboilerinstallationinstructions.


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Contractor level parametersProgrammable output A1Parameter HG14

HG14

0



ThefollowingfunctionscanbeallocatedtooutputA1:

No. Explanation

0 N/ANocontrolofoutputA1.

1 DHWcirculationpump100%TheoutputA1iscontrolledbycontrolaccessories(BM),ifDHWcirculationhasbeenenabled.OutputA1isconstantlyenabledwhennoaccessorycontrollerisinstalled.

2 DHWcirculationpump50%TheoutputA1iscontrolledbycontrolaccessories(BM)incyclesof5minutesONand5minutesOFF,ifDHWcirculationhasbeenenabled.OutputA1constantlycycledin5minutecycleswhennoaccessorycontrollerisinstalled.

3 DHWcirculationpump20%TheoutputA1iscontrolledbycontrolaccessories(BM)incyclesof2minutesONand8minutesOFF,ifDHWcirculationhasbeenenabled.OutputA1cyclesconstantlywhennoaccessorycontrollerisinstalled.

4 AlarmoutputOutputA1iscontrolledafterafaultandexpiryof4minutes.

5 FlamedetectorOutputA1iscontrolledafteraflamehasbeenrecognised.

6 N/A7 Fluegasdamper/ventilationairdamper

OutputA1isclosedbeforetheburnerstarts.FeedbackischeckedviainputE1(HG13=5).IfinputE1doesnotclose,theburnerwillnotstart,andaftertwominutesFC8willbegenerated.Important: Input E1 must be programmed as fl ue

gas/ventilation air damper.8 Externalventing

OutputA1iscontrolledinvertedtotheburner.SwitchingOFFexternalventilation(e.g.extractorfan)duringburneroperationisonlyrequired,iftheboilerisoperatedasopenfluesystem.

9 SupplyvalveOutputA1iscontrolledafteraflamehasbeenrecognised.

10 N/A11 Feedpump

OutputA1iscontrolledateveryheatdemand(heatingcircuitorcylinderheating).

3061847_121020


Aftercompletingthecylinderheating(thecylinderhasreachedtheset temperature), thecylinderprimarypumpwill runonupto themaximum set run-on time.The cylinder primary pumpwillswitchOFFprematurelyif,duringtherun-ontime,theboilerwatertemperaturehasfallentoadifferentialbetweenboilerandcylinderwatertemperatureof5K,topreventtheboilercoolingdowntooseverely.

Cylinder primary pump run-on timeParameter HG19

HG19

3



The cylinder hysteresis regulates the start and stoppoints forcylinderheating.ThehighertheON/OFFtemperaturedifferential,the higher the cylinder temperature fluctuation around the setcylindertemperature.

Example: Setcylindertemperature60°C Cylinderhysteresis5K

Cylinderheatingcommencesat55°Candendsat60°C.

Cylinder hysteresisParameter HG15

HG15

5



No. Explanation

12 BypasspumpforreturntemperatureraisingOutputA1iscontrolledifthereturntemperatureislowerthantheselectedreturntemperatureraisingvalue(parameterHG32).Important: Input E1 must, in any case, be

programmed to setting 11. Output A1 will also be switched if input E1 (HG13 = 8) has been programmed.

13 DHWcirculationpumpOutputA1iscontrolledfor5minutesafterapushbuttonhasbeenactivated(pulseinputE1).Important: In any case, input E1 must be

programmed to setting 6.14 OutputA1ON

OutputA1iscontrolledifinputE1isclosed(externalburnerdemand).Important: In any case, input E1 must be


213061847_1210

Cylinderheatingcommencesassoonasthecylindertemperaturesensor demands heat. The heating circuit pumpwould beconstantlyswitchedOFF,iftheboilerwasundersized,thecylinderwasscaled-uporifDHWwasconstantlydrawnoffduringDHWprioritymode.The accommodation cools down severely.Anoptionenablesamax. cylinderheating time tobespecified tolimitthiseffect.Thecontrolunitrevertstoheatingmode,whenthesetcylinderheatingtimehasexpiredandcyclesintheselectedrhythmbetweenheatingandcylinderheatingmode,irrespectiveofwhetherthecylinderhasreacheditssettemperatureornot.Thisfunctionremainsenabledeveninparallelmode(parameterA10setto1).Itisonlydisabledifitissetto0.Set this parameter to 0 in heating systemswith a highDHWconsumption,e.g.hotels,sportsfacilities,etc.

Max. DHW cylinder heating timeParameter HG20

HG20

2

Factorysetting:2hSettingrange:0to5h



Thecontrolunitisequippedwithanelectronicboilerthermostat,withanadjustableminimumswitch-ONtemperature.TheburnerisswitchedONsubject tothecycleblock if thistemperature isnotachievedwhenheatisdemanded.TheminimumboilerwatertemperatureTK-min.isalsonotnecessarilyachievedwhenthereisnoheatdemand.

Note: Set thisparameter to50°Cwhenusingapressure-jetgasburner.

Minimum boiler water temperature TK-min.Parameter HG21

HG21

38



3061847_121022

Contractor level parametersThecontrolunitisequippedwithanelectronicboilerthermostat,withanadjustablemaximumshutdowntemperature(maximumboilerwater temperature).The burner is switchedOFF if thistemperatureisexceeded.Theburnerwillbestartedagain,whentheboilerwatertemperaturehasfallenbyasmuchastheburnerswitchingdifferential.Theboilercircuitpumpwillalsobestartedin summermode, if the boilerwater temperature falls below95°C(possiblere-heateffect).Thispreventsanoverheatingoftheboiler.

Maximum boiler water temperature TK-max. Parameter HG22

HG22

80



UsingtheDHWsensoroperatingmode,threeseparatemodescanbeappliedtotheDHWsensorinput.

Operating mode 1isthefactorysettingforthecylinderheatingmodewithelectroniccylindertemperaturesensors(accessories).

Operating mode 2 is designed for electronically controlledcylinderheatingwithcylindertemperaturesensorandalsoforanexternalthermostatdemand.Inthiscase,theexternalthermostat(zerovolt)willbewiredonsiteparalleltotheelectroniccylindertemperature sensor.Cylinder heatingwill be implemented asstandardforaslongastheexternalthermostatdemandsnoheat(contactopen).Theboilercircuit,mixercircuitandcylinderprimarypumps are disabled and themixer closes,when the externalthermostatdemandsheat(contactclosed).TheburnerheatstheboileratmaximumoutputtoTK-max.Contactorcontrolprovidedonsitemustensurethatanexternalpumptransferstheheattotheexternalconsumer(e.g.airheater,swimmingpool).Eveninstandbymode,thethermostatdemandhaspriorityoverallotherheatdemands.

Operating mode 3isdesignedtocontrolthecylinderprimarypumpwith an external thermostat or electronic cylinder temperaturesensor,howeverwithoutsoftstart.ThecylinderprimarypumpalsooperatesiftheactualboilertemperatureislowerthantheDHWtemperature.Theexternalthermostatisconnectedwithzerovoltatthecylindersensorterminal(SF).ThisenablestheDHWcylinderprimarypumpoutputtobeusedtocontroltheDHWcylinderorforotherpurposes.Theswitchingtimeprogramforcylinderheating(programmingmodule)remainsenabledevenwhenifitoperatesonlyasthermostat.Theburnerheatstheboilertothesetcylindertemperature+excessboilertemperatureduringcylinderheating.Sensorinputclosed: PumpONSensorinputopen: PumpOFF

DHW sensor modeParameter HG24

HG24

1



Note:Afterchangingthesensoroperatingmode,switchthesystemfirstOFFandthenONagain.

233061847_1210

Contractor level parametersThe excess temperature differential between the cylindertemperature and the boilerwater temperature during cylinderheating is selectedwith parameter HG25. The boiler watertemperature continues to be limited by themaximum boilerwatertemperature(parameterHG22).Thisensuresthat,eveninspringandautumn,theboilerwatertemperatureishigherthanthecylindertemperature,therebyensuringshortheatingtimes.Theheatingcircuitpumpstartsautomaticallyforalimitedtime,topreventthehighlimitsafetycut-outbeingtriggered,iftheboilerwater temperature exceeds95 °C in summermodewhilst thecylinderisbeingheated.

Boiler excess temperature during cylinder heatingParameter HG25

HG25

10



Theoptionalboilersoftstartprotectstheboileragainstcorrosionthatcanoccurwhentheboiler isheatedfromacoldstate, i.e.throughcondensateseparationinthedewpointrange.TheboilercircuitpumpandthemixercircuitpumpwillbeswitchedOFFandthemixercloses,iftheboilerwatertemperaturefalls2KbelowthesetvalueTK-min.ThepumpwillbeenabledwhentheboilerwatertemperaturehasexceededtheminimumlimitTK-min.

TK-min.cannotbeachievedandtheheatingcircuitandcylinderprimary pumps remainOFF, if the burner is blocked throughexternal safety circuits (e.g. flue gas thermostat on solid fuelboilers).

Boiler soft startParameter HG26

HG26

1



Ensurethereturntemperatureisraisedinheatingsystemswithawatercontentgreaterthan20l/kWoutput.Forboilerswithapressure-jetoilburneroratmosphericgasburner,theminimumreturn temperature is 30 °C, for boilerswith pressure-jet gasburner40°C.

Raising the return temperatureParameter HG32

HG32

30

Factorysetting:30Settingrange:0to70°C


3061847_121024

Contractor level parametersThe control unit is equipped with a dynamic burner switchingdifferentialtooptimisetheselectedburnerswitchingdifferentialatvariousboilerloads.Thisfunctioncorrectstheselectedburnerswitchingdifferential(parameterHG01)throughload-dependentburnerruntimes.Theburnerswitchingdifferentialisreducedtoaminimumvalueof5K,iftheburneroperatingtimeincreasesuptotheselectedhysteresistime.Thismakestheselectedburnerswitchingdifferential effective at low boiler loads (rapid heat-up = shortburnerruntime).Thiseffectivelypreventsshortburnerruntimesandcycling.Withlongerburnerruntimes(highheatdemand),theswitchingdifferentialwillbereducedto5K.Thispreventstheboilerbeingheatedtounnecessarilyhightemperatures.Thisoptimisestheenergyconsumptionoftheheatingsystem.Thisfunctionpreventsshortburnerruntimesandfrequentcycling.Thisprotectstheenvironmentandminimiseswear.

Hysteresis timeParameter HG33

HG33

10



eBUS feedParameter HG34

HG34

2

Factorysetting:2Settingrange:0/1/2


ParameterHG34enablestheselectionofthreetypesofeBUSfeed.

Thesettingshavethefollowingmeaning:0→eBUSfeedswitchedOFF1→eBUSfeedswitchedON2→automaticeBUSfeed

253061847_1210

0 - 5 V input for telecontrol system

HG35

0

Factorysetting:0Settingrange:0/1Individual setting: __________

ParameterHG35enablesthe0-5Vinputtobeswitchedforatelecontrolsystem.

Thesettingshavethefollowingmeaning:0 → External sensor connectionDuringcommissioningthecontrolunitcheckswhetherandwhereanoutsidetemperaturesensorisconnected.1 → 0 - 5 V input (no outside temperature sensor connected)Thevoltagesignalatthe0-5Vinputisusedascontrolvariablefordefaultingthesetheader/boilerwatertemperature(independentofthesettingoftheprogramselectorattheBM).LimitingthesetflowtemperaturebyTVmax.bzw.TKmax..Theboilercircuitpumpbecomesthefeedpump.PumpONwithburnerdemand.Pumprun-oninaccordancewithHG07.

Dependingonthetransferfunction(seediagram),thesettemperatureiscalculatedsubjecttotheinputvoltage.

Setheader/boilertemperaturein[°C]

Setheader/boilerfrostprotection

Inputin[V]

51

38

90

Note:Priortoconnectingthetelecontrolsystem,setparameterHG35to1andalsosetsystemparameterA06(settheexternalsensor)to0.SwitchOFFthemainspower,connectthetelecontrolsystemtoplug"AF".SwitchthemainspowerONagain.Otherwiseanoutsidetemperaturesensorcouldalreadybedetectedatlowvoltage→FC15.


3061847_121026


These test functionsenableyou tocheck the followingcontrolunitoutputs.

rEL1 Heatingcircuitpump ONrEL2 Cylinderprimarypump ONrEL3 OutputA1 ONrEL4 Resetrelay ONrEL5 Burner ONrEL6 Mixercircuitpump ONrEL7 MixerOPEN ONrEL8 MixerCLOSE ON

TEST functions

HG50 rEL

Minimummixer circuit temperatureParameter MI 01

MI 01

0


This function limits the lower end of the flow temperature ofmixer circuit 1.Below this set value, the outside temperaturewillnolongerbeconsidered.Mixer1holdstheflowtemperatureconstantlyatthesetvalue.

Maximummixer circuit temperatureParameter MI 02

MI 02

50


Thisfunctionprovidestheupperlimitofthemixingcircuit1flowtemperature.Abovethissetvalue,theoutsidetemperaturewillno longer be considered.Mixer 1 holds the flow temperatureconstantlyatthesetvalue.This function is no replacement for the maximum pump shutdown thermostat in underfloor heating systems.

Withoutamaximumthermostat,extremelyhightemperaturesmayoccurintheunderfloorheatingcircuit,shouldthecontrollerdevelopafault.Thiscanresultinthefloordevelopingcracks.

273061847_1210

Heating curve gap -mixer circuitParameter MI 03

MI 03

10


The distance between heating curves determines the excessboilerwatertemperaturedifferentialagainstmixercircuit1.Thisensuresthattheboilerwatertemperatureisalwayshotterbytheselected value thanmixer temperature 1, enablingmixer 1 toregulatewithout"overshooting".


Screed dryingParameter MI 04

MI 04

0

Factorysetting:0Settingrange:0/1/2

Ifanunderfloorheatingsystemisstartedforthefirsttimeinnewbuildings,thesetflowtemperaturemay,asanoption,becontrolledindependentoftheoutsidetemperatureeithertoaconstantvalueortocontrolthesetflowtemperatureinaccordancewithanautomaticscreeddryingprogram.Ifthisfunctionhasbeenenabled(setting1or2),itcanbeterminatedbyresettingparameterMI04to0.MI04=0N/AMI04=1constanttemperaturemixercircuitThemixercircuitisheatedtothesetflowtemperature.ThesetflowtemperatureisregulatedaccuratelytothetemperatureselectedinparameterMI01.MI04=2screeddryingtemperatureForthefirsttwodays,thesetflowtemperaturewillremainconstantat25°C.Itwillthenbeautomaticallyraisedeveryday(at0.00h)by5°Cuptothemaximummixercircuittemperature(MI02).Thattemperaturewillthenbeheldfortwodays.Subsequently,theflowtemperatureisautomaticallyreducedagainin5°Cstepsperdayto25°C.Theprogramsequence is terminatedafterafurthertwodays.

3061847_121028

Proportional range -mixer circuitParameter MI 07

MI 07

12


Theproportionalrangedeterminesthetemperaturewindowfortherespectivesetvaluecontrolvariable(flowtemperature),withinwhichthereispermanentcontrol.Outsidethisrange,theactuatoriseitherpermanentlyopenorclosed,subjecttothedirectionofthedeviation.Adjusttheproportionalrangesothatstableregulationis ensured.This depends on the operating time of themixermotor.Formixermotorswithashortoperatingtime(e.g.2min),selectalargetemperaturewindow(e.g.40K);viceversaselectasmallertemperaturewindow(e.g.10K)formixermotorswithlongeroperatingtimes(e.g.>10min).Thefactorysettingisinlinewiththemixermotorsofthepipeworkset,andshouldnotbemodified.Ranges set too tightly lead to permanent control fluctuations; ranges set too wide lead to longer delays before the selected condition is achieved.


Run-on time -mixer circuit pumpParameter MI 06

MI 06

3


Subjecttotherebeingnoheatdemandfromthemixercircuit,themixercircuitpumpwillrun-oninaccordancewiththesettime,topreventaboilersafetyshutdownathightemperatures.

Fig.:Flow temperature progressover time during screeddrying

1

20

25

30

35

40

45

50

55

2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17Flow

temperature(°C)

Screeddryingtime(days)

NBAgreethetimesequenceandthemaximumflowtemperaturewiththescreedcontractor,otherwise thescreedmaybedamaged,particularlythroughcracking.Thescreeddryingprogramcontinuesafterapowerfailure.TheremainingtimeindaysisdisplayedattheBM.

293061847_1210


The operating mode can only be displayed at the BM programming module. For procedures, check the operating instructions of the BM programming module.

STB test ThemaximumboilerwatertemperaturelimitTK-max.isdisabledbyholdingdowntheresetbuttonwhenthecontrolunitisswitchedON.Theboilerheatstotheselectedtemperatureofthehighlimitsafetycut-outandlocksout.Thisenablesyoutochecktheperfectfunctionofthehighlimitsafetycut-out.

Reset Observethefollowingstepstoimplementareset:- TheON/OFFswitchmustbesettoO(OFF).- PressandholddowntheresetbuttonwhilstsettingtheoperatingmodeswitchtoI(ON).

- Keepholdingdowntheresetbuttonforatleast2secondsafterthesystemhasstarted.

Allparameters(individualsettings)arereturnedtotheir factorysettingsbyareset(onlycontrolunitswithoutBM).

Operating mode(displayontheBMprogrammingmodule)

Status HG Explanation Notes0 Standby1 Emissiontestmode max.15min.3 Heatdemand(heatingmode)5 Heatdemandwithcycleblock6 Cycleblock seeHG097 Frostprotection-heating seeA098 Softstart seeHG2615 Cylindermode forboilers16 Frostprotection-cylinder < + 5 K17 Pumprun-on-cylinder seeHG1920 Parallelcylindermode seeA1021 Max.cylinderheatingtimeexceeded seeHG20,MI0922 Sensoroperatingmode2,contactclosed seeHG2423 Sensoroperatingmode3,contactclosed seeHG24

3061847_121030

Contractor level parametersThe temperature (set / actual temperature) can only be displayed at the BM programming module. For procedures, check the operating instructions of the BM programming module.

Set / actual values(displayontheBMprogrammingmodule)

Display NameDHW TEMP Actualcylindertemperature

SetcylindertemperatureOUT TEMP Outsidetemperature

ES AVERAGE Averageoutsidetemperature

ES MAX MIN Maximumoutside temperature (°C;0 to24h)Minimumoutsidetemperature(°C;0to24h)

ROOM TEMP Actualroomtemperature(directHC)Setroomtemperature(directHC)

ROOM TEMP Actualroomtemperature(mixer1)Setroomtemperature(mixer1)

MODE HC Operatingmode-heatingcircuit(sun,moon,standby)

Header temp Actualheadertemperature(°C)Setheadertemperature(°C)

BOILER TEMP ActualboilerwatertemperatureSetboilerwatertemperature

MIX VALVE 1 ActualmixertemperatureSetmixertemperatureMixercircuitoperatingmode(sun,moon,standby)

RETURN Actualreturntemperature

STATUS HG Boilerstatus

BURN RUN H Burnerhoursrun

BURN START Boilerburnerstarts

313061847_1210

Parameter setup reportWolfrecommendsyoucompletethesettingreportcarefullyandtokeepitsafetoenableaquicksolutiontobefoundduringserviceandincaseofafullreset.

Parameter Setting range Factory setting Individual setting

A09 Frostprotectionlevel -20to+10°C +2°C

A10 ParallelDHWoperation 0/1/2 0

A14 MaximumDHWtemperature 60to80°C 65°C

HG01 Burnerswitchingdifferential(dynamic) 5 to 30 K 15 K

HG06 Pumpoperatingmode 0/1/2 0

HG07 Boilercircuitpumprun-ontime 0to30min 3min

HG08 MaximumlimitboilercircuitTV-max 40to90°C 75°C

HG09 Burnercycleblock 1to30min 4min

HG13 ProgrammableinputE1 1 to 11 1

HG14 ProgrammableoutputA1 0 to 14 0

HG15 Cylinderhysteresis 1 to 30 K 5 K

HG19 Cylinderprimarypumprun-ontime 0to10min 3min

HG20 Max.cylinderheatingtime 0to5h 2h

HG21 MinimumboilerwatertemperatureTK-min.* 38to90°C 38°C

HG22 MaximumboilerwatertemperatureTK-max. 50to90°C 80°C

HG24 DHWsensoroperatingmode 1/2/3 1

HG25 BoilerexcesstemperatureduringDHWcylinderheating

0 to 40 K 10 K

HG26 Boilersoftstart 0/1 1

HG32 Returntemperatureraising** 0to70°C 30°C

HG33 Hysteresistime 1to30min 10min

HG34 eBUSfeed 0/1/2 2

HG35 0-5Vinputfortelecontrolsystem 0/1 0HG50 Testfunktionen 1bis8 -HG70 Display

MultifunctioninputE1-50sensorshortcircuitorcontactclosed-60sensorleadbreakorcontactopenActualtemperatureheadersensorHG13=7ActualtemperaturereturnsensorHG13=11

MI 01 Minimummixercircuittemperature 0to80°C 0°C

MI 02 Maximummixercircuittemperature 20°Cto80°C 50°C

MI 03 Mixercircuitheatingcurvedistance 0 to 30 K 10 K

Mi 04 Screeddrying 0/1/2 0

MI 06 Mixercircuitpumprun-ontime 0to30min 3min

MI 07 Mixercircuitproportionalrange 5 to 40 K 12 K* setto50°Cforpressurejetgasburners** setto40°Cforpressurejetgasburners

3061847_121032

Adjustment of the high limit safety cut-out (STB)

Thehighlimitsafetycut-out(STB)isfactory-setto110°C.Ifrequired,itcanbechangedoverto100°C.

Such changes are irreversible.

Disconnectthecontrolunitfromitspowersupply.

Removecap.

Removethecoverfromthehighlimitsafetycut-out.

Releasethehighlimitsafetycut-outfixingscrews.

Releasethefixingscrewsofthecontrolunitfrontcoverandpivotforward.

Removethehighlimitsafetycut-out.

Releasetheclampingscrew.Adjustthesettingdiscto100°Cinaccordancewiththescaleandretightentheclampingscrew.

Reassembleinreverseorder.

NB The maximum boiler water temperature (TK-max) mustnotbesetto90°C,ifthehighlimitsafetycut-outhasbeenadjustedto100°C.

High limit safety cut-out changeover

333061847_1210

Sensor resistancesNTCSensor resistances

Boilersensor,cylindersensor,flowsensor,outsidetemperaturesensor,returnsensor,centralsensor

Temp. Resist. Temp. Resist. Temp. Resist. Temp. Resist.°C Ohm °C Ohm °C Ohm °C Ohm-21 51393 14 8233 49 1870 84 552-20 48487 15 7857 50 1800 85 535-19 45762 16 7501 51 1733 86 519-18 43207 17 7162 52 1669 87 503-17 40810 18 6841 53 1608 88 487-16 38560 19 6536 54 1549 89 472-15 36447 20 6247 55 1493 90 458-14 34463 21 5972 56 1438 91 444-13 32599 22 5710 57 1387 92 431-12 30846 23 5461 58 1337 93 418-11 29198 24 5225 59 1289 94 406-10 27648 25 5000 60 1244 95 393-9 26189 26 4786 61 1200 96 382-8 24816 27 4582 62 1158 97 371-7 23523 28 4388 63 1117 98 360-6 22305 29 4204 64 1078 99 349-5 21157 30 4028 65 1041 100 339-4 20075 31 3860 66 1005 101 330-3 19054 32 3701 67 971 102 320-2 18091 33 3549 68 938 103 311-1 17183 34 3403 69 906 104 3020 16325 35 3265 70 876 105 2941 15515 36 3133 71 846 106 2852 14750 37 3007 72 818 107 2773 14027 38 2887 73 791 108 2704 13344 39 2772 74 765 109 2625 12697 40 2662 75 740 110 2556 12086 41 2558 76 716 111 2487 11508 42 2458 77 693 112 2418 10961 43 2362 78 670 113 2359 10442 44 2271 79 649 114 22810 9952 45 2183 80 628 115 22211 9487 46 2100 81 608 116 21612 9046 47 2020 82 589 117 21113 8629 48 1944 83 570 118 205

3061847_121034

Wiring diagram boiler control unit R3

*Accessories

**Rem

ovejumperw

henusingtheprogrammableinputE

1(param

eterHG13).

On-siteemergency

stopswitch

Pow

ersupply

230V

/50Hz

S1

-ON/OFF

switch

F1

-M6.3A

X1-20-Terminalstrip

STB

-H

ighlim

itsafetycut-out

KKP

-Boilercircuitpum

pA1

-Program

mableoutputA

1LP

-P

rimarypump

MKP

-Mixercircuitpum

pMM

-Mixermotor

PE

-Earthconductor,boilercasing

AF

-Outsidetemperaturesensor

KF

-Boilersensor

SF

-Cylindersensor

VF

-Flowsensor,mixercircuit

E1

-Program

mableinputE

1B

US

- B

US

SFK

-S

olarsensor-collector

(notallocated)

Burnerstage1

Rem

otereset

(option)

353061847_1210

Specification Supplyvoltage: 230V±10%

Ratedfrequency: 50-60Hz

Devicefuse: Max.6.3A/mediumslow

Powerconsumption: 5 VA (control unit and accessories,excluding burner and pumps,standby)

Breakingcapacity,pumps:Each230V/4(2)Aacc.toEN60730,part1

Mixermotor: 230V/50Hz,runtime2-10min

Factorysetting: Runtime4-7min

Ambienttemperature: 0....50°C

Storagetemperature: -20to60°C

Datamemory: EEPROM

Specification

3061847_121036

Fault messagesIfafaultisindicatedbythesignalringofthecontrolunitflashingred,afaultcodeisdisplayedviatheWolf-controlaccessorywitheBUScapabilitythatallowscauseandeffecttobeallocatedusingthefollowingtable.Thislistoffaultmessagesisdesignedtoallowyourheatingcontractortotracethefaultmoreeasily.

No. Fault Cause Effect / Remedy1 TBexcesstempe-

ratureTheexternaltemperaturelimiterhasshutdownthesystem

BurnerOFF,heatingcircuitpumpONMixerregulatestoTVmaxRequestaservice

4 Burnerfault Duringtheburnerstartnoflameestablished

BurnerOFF,HCpumpsONMixerregulatestoTVmaxPresstheresetbuttononthecombu-stioncontrolunitorthecontrolunit.Ifthefaultcannotberemovedafterpressingtheresetbuttonseveraltimes,requestaservice.

6 TWexcesstempe-rature

Theboilerwatertemperatu-rehasexceededthelimitfortheTW(e.g.95°C)

BurnerOFF,HCpumpONMixerregulatestoTVmaxRequestaservice

8 Fluegas/ventilationairdamperdoesnotmove

Fluegasdamper/ventilationairdamperoritsfeedbackfaulty

BurnerOFF,pumpON

12 Boilersensorfaulty Boilertemperaturesensororleadfaulty

BurnerOFF,HCpumpsONMixerregulatestoTVmaxRequestaservice

14 Cylindersensorfaulty

SensorfortheDHWtempe-ratureorfortheleadfaulty

Forheatingmode:NoeffectCylinderprimarypumpandheatingcircuitpumpcyclealternately1hON,1hOFFRequestaservice

15 Outsidetemperatu-resensorfaulty

Sensorfortheoutsidetemperatureisfaulty(shortcircuitorbreak)

EffectasperoutsidetemperaturebelowfrostprotectionlimitRequestaservice

40 Faultmaximumthermostat,systempressureswitch

Thesystempressureswitchorthemaximumthermostathasresponded

BurnerOFF,pumpOFF

52 Max.cylinderhea-tingtimeexceeded

Cylinderheatingtakeslongerthanpermitted

Alternatingcylinderheatingandcentralheatingmode

70 Flowsensorfaulty Sensorfortheflowsensorfaulty(shortcircuitorbreak)

MixerdoesnotmoveMixercanbeadjustedmanually.Themixercircuitpumpcontinuestorun.

79 Faultmulti-functionsensor(centralsensor)

Centralsensorfaulty(shortcircuitorbreak)

Controlunitatsetboilerwatertemp.NoeffectontheboileroperationRequestaservice

79 Faultmulti-functionsensor(returnsensor)

Sensorforthereturnsensorfaulty(shortcircuitorbreak)

NoeffectontheboileroperationbypasspumpcontinuestorunRequestaservice

81 EEPROMfault Internaldevicefault Requestaservice91 FaulteBUSpara-

meterOneBUSaddresswasallo-catedmorethanonce

Requestaservice

Wolf GmbH · Postfach 1380 · D-84048 Mainburg · Tel. +49-8751/74-0 · Fax +49-8751/741600 · Internet: www.wolf-heiztechnik.de

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