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www.resol.deThank you for buying a RESOL product.Please read this manual carefully in order to put this controller to the best possible use.

RESOL DeltaSol® AXMounting

Connection

Operation

Application examples

manual

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ContentsImprint ................................................................................2Security devices ..................................................................2Technical data and function survey ..................................31. Installation ...................................................................41.1 Mounting ......................................................................................... 41.2 Electrical connection .................................................................... 42. Functions and Settings ...............................................5 2.1 Micro-switch and potentiometer .............................................. 52.2 Switch-on temperature difference ............................................ 5

Scope of delivery:• controllerDeltaSol® AX

(full kit incl. 2 temperature sensors)• sparefuseundercover• accessorybagconsistingofsiliconesealing, fastening

screwsanddowels,strainreliefclampandscrews• manual

2.3 Manual operation .......................................................................... 52.4 Maximum temperature limitation ............................................. 62.5 Anti-Freeze protection ................................................................ 62.6 Minimum temperature limitation .............................................. 62.7 Blinking codes ................................................................................ 63. Tips for fault diagnostics ............................................74. Applications of use .....................................................75. Annex: Fault diagnostics .......................................... 10

Security advice

Pleasepayattentiontothefollowingsecurityadviceinordertoavoiddangeranddamagetopeopleandproperty.

Instructions

Attentionshouldbepaid

-tothestatutoryprovisionsforpreventionofindustrialaccidents,

-tothestatutoryprovisionsforenvironmentalprotection,

-totheHealthandSafetyatWorkAct1974

- to Part P of the Building Regulations 2005

- to BS7671 Requirements for electrical installations and relevantsafetyregulationsofDIN,EN,DVGW,TRGI,TRFandVDE.

This instruction isexclusivelyaddressedtoauthorisedskilled personnel.

-Onlyqualifiedelectriciansshouldcarryoutelectricalworks.

-Initial installationshouldbeeffectedbynamedqualifiedpersonnel

Declaration of conformity

We, RESOL Elektronische Regelungen GmbH, D-45527Hattingen, declareunderour sole responsibility thatourproduct DeltaSol® AX complies with the following stan-dards:

EN55014-1EN60730-1

According to the regulationsof theabovedirectives, theproductislabelledwith :

89/336/EWG73/23/EWG

Hattingen,07.07.2006RESOLElektronischeRegelungenGmbH,

ppa.GeraldNeuse

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Electrostatical discharges can lead to damages of electronic components!

Dangerousvoltageoncontact!

DeltaSol® AXThanks to its tough and deliberately simple design concept this low priceddifferentialcontrollercanbewidelyusedinsolar,heatingandairconditioningsystems.Thelargecontrolrangeandadjustabletemperaturedifferencesensurethatthisunitcanbeusedinalmostallapplicationswhereswitchingprocessesarecontrolledbytemperaturedifference.Theouter cover is availablewith anoptional seal toprotect the electronicsagainst dripping water.

The controller checks a temperature diffference ∆T measured by two tem-perature sensors by comparing this difference with a preadjusted switch-ondifference(adjustablewithintherangeof2...16K).Thecontrolofthesystemiseffectedbyastandardrelay(=changeovercontact),towhichseveralmotorsorelectricalvalvescanbeconnected.Thecontrollerswitches-ON,iftheadjustedtemperaturedifferenceisexceeded;ifthisdifferenceisunderrunby1,6K,thecontroller switches-OFF.

130

45

Technical dataHousing: plug-in plastic PC-ABS

Protection type: IP20/DIN40050

Ambient temp.: 0 ... 40 °CSize: Ø130mm,45mmheight

Mounting: wall mounting

Display: 1 function control lamp

Inputs: 2sensorinputsPT1000

Outputs: 1standardrelay(changeovercontact)

Switch-on difference: ∆T2...16KadjustableSwitch-off difference: 1,6Kbelowswitch-ondifference

Control range: -20 ... +150 °C

Power consumption: max. 4 A

Powersupply:220...240V~

Order indications

RESOL DeltaSol AX 115 211 70

RESOL DeltaSol A X- full kit - 115 211 80incl. 2 temperature sensors Pt1000 (1xFKP6,1xFRP6)

Accessory Overvoltage protection

ItishighlyrecommendedtoconnecttheRESOLovervoltageprotectionSP1toallcollectorsensorsinordertoavoidovervoltages(e.g.bylightning).

RESOL SP1 180 110 10

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Theunitshouldbelocatedinternally.Itisnotsuitableforinstallationinhazardouslocationsandshouldnotbesitedneartoanyelectromagneticfield.Pleaseensuresensorcablesandacpowersupplyareseparated.

1. Choosea location,drill twoholesofØ6mmsidebysidewithadistanceof113mmandfitintheencloseddowels.

2. Fixthecontrollerbymeansoftheenclosedscrews(4x40 mm)(pos. 1).

3.Theelectricalconnectionmustbeeffectednow.Powersupplyofthecontroller(210...250V)mustbeeffectedbyexternalpowerswitch.

Connection of the sensors at the clamps:

1/2 = sensor1(e.g.collectorsensor)

3/4 = sensor2(e.g.storesensor)

Connection of the consumer to the clamps: 7 = normallyopencontactrelay(RO) 8 = breakcontactrelay(RC) 9 = neutralcontactrelay(N)

ground clamp (collective terminal strip)

ac power supply to the clamps:

10 = neutralconductorN

11 = conductorL

ground clamp (collective terminal strip)

Theguidesoftherequiredinsertionchannelsmustbebrokenawayatthebottomsideofthecover.

Thecablesaretobefixedtothehousingbyenclosedstrainrelief supports and screws (pos.2).

If necessary, activate anti-freeze function by jumper. Ifprotection against dripping water is required insert the siliconesealingringintothegrooveonthebaseplatetakingcare not to stretch it.

Putonthecoverandscrewit(pos.3).Ifnecessary,adjusttemperature difference ∆T.Putonhousingcoverandscrewit(pos.4).

1. InstallationWarning!Switch-off power supply before opening the housing.

1

4

3

2

housingcovercover

base

sensor 1

sensor 2relay(consumer)

acpowersupply

ground clamp (collectiveterminalstrip)

fuseT4A

1.2 Electrical connection

Insertsealingbandwithoutstrainintothenut

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2.1 Micro-Switch and Potentiometer

2. Functions and Settings

Themicro-switch(A)activates(ON)deactivates(OFF)

following functions:

•Manualoperation(micro-switch1)•Maximumtemperaturelimitation(micro-switch2)•Anti-freezeprotection(micro-switch3)•Minimumtemperaturelimitation(micro-switch4)

Potentiometer(B)adjuststhetemperatureforthemaxi-mum or minimum temperature limitation in °C.

Potentiometer(C)adjuststheswitch-ontemperatureinK

2.3 Manual operation modeON

OFF1 2 3 4

1

ON

OFF1 2 3 4

ON

OFF1 2 3 4

B

C

2.2 Switch-on temperature difference

ON

OFF1 2 3 4

A

ThecontrollercheckstheexistingtemperaturedifferencebetweentemperaturesensorS1andtemperaturesensorS2withtheadjustedtemperaturedifference∆Tatthepotentiometer(C).Thecontrollerswitchesovertherelayassoonasthetemperaturereachestheadjustednominalvalue,theoperatingcontrollampflashesgreen.Ifthesetvalueisunderrunbyadifferenceof1,6K(hysteresis,cannotbechanged)thecontrollerswitchestherelayback.

Thefactorysettingfortheswitch-ontemperaturedifferenceispreadjustedto6K.Adjustabletemperaturedifferencewithinarangeof2...16K.

ON

OFF1 2 3 4

C

A

Duringcomissioningandmaintenancetherelaycanbeswitched-onpermanentlybymanualoperation.

Themanualoperationmodeisactivatedanddeactivatedbythemicro-switch.Whenthemanualoperationmodeisactivated,theoperatingcontrollampflashesgreen.

Thefactorysettingforthemanualoperationmodeisdeac-tivated(micro-switchinOFF-position),thecontrollerisinautomatic operation.

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Micro-switch3activatesananti-freezeprotectionfunction.Theanti-freezeprotection functionreacts to the tempe-rature of sensor S1(e.g. a collector sensor). As soon as thissensormeasuresatemperaturebelow+4°C,warmerwaterispumpedfromthestoretothecollectortopreventdamages to the collector; in the course of this the operating control lampflashes green.As soon as a temperatureof+5°Cisreached,thepumpswitches-offagain.

Please note:Asthereisonlyalimitedheatquantityofthestoreavailableforthisfunction,theanti-freezefunctionshouldonlybeusedinregionswithfewdaysoftemperaturesaround freezing point.

Thefactorysettingfortheanti-freezefunctionisdeactivated.(micro-switch in OFF-position).

2.5 Anti-freeze protection

3

ON

OFF1 2 3 4

2.6 Minimum temperature limitation

4

Micro-switch4activatesthetemperaturelimitationasami-nimumtemperaturelimitation.ThetemperatureisadjustedasalimitingvalueforthesensormountedontheterminalsS1atthepotentiometer„temperaturelimitation“.Therelaywon’tswitchuntiltheadjustedtemperatureisreached.Thisfunctionshouldpreferablybeusedincombinationwithasolidfuelboiler inordertoavoidfluegascondensationwithintheboiler.Bymaintainingaminimumtemperaturelimitationintheheatgeneratorafluegascondensationonthe boilerwalls isavoided.Iftheminimumtemperatureisunderrun,theoperatingcontrollampflashesred.

Thefactorysettingfortheminimumtemperaturelimitationisdeactivated(micro-switchinOFF-position).Whenactiva-ted,atemperaturelimitationof60°Cispreadjusted.

ON

OFF1 2 3 4

ON

OFF1 2 3 4

A

A B

2.4 Maximum temperature limitation

2

Micro-switch2activatesthetemperaturelimitationasamaximumtemperaturelimitation.ThetemperatureforthetemperaturesensormountedonclampS2isadjustedasalimitingvalueatthepotentiometer(B).Iftheadjustedma-ximumtemperatureisexceeded,therelayisswitchedoverandsopreventse.g.afurtherstoragecharge(protectionagainstoverheating).Ifthemaximumstoretemperatureisexceeded,theoperatingcontrollampflashesred.

Thefactorysettingforthemaximumtemperaturelimitationisactivated(micro-switchinON-position),Thetemperaturelimitationispreadjustedto60°C.Adjustabletemperaturedifferencewithinarangeof20...90°C.

ON

OFF1 2 3 4

ON

OFF1 2 3 4

BA

2.7 Blinking codes

TheLEDshowstheactualoperatingstatusofthecont-roller.

Readyforuse red

Relayactive green

Manualmodeactive green(blinking)Maximum temperature exceeded red(blinking)

Anti-freezeprotectionactive green(blinking)Minimum temperature under-run red(blinking)

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4. Application examples

Standard solar system with 1 store

Ifthecurrenttemperaturedifference∆Tbetweencollectorsensor S1 and store sensor S2 exceeds the temperature differenceadjustedatthecontroller,thesolarpumpisswitched-on. Heat is transported from the collector to the store; in the course of this the temperature difference is reduced.Iftheadjustedtemperaturedifferenceisunderrunbyadifferenceof1,6K(hysteresis,cannotbechanged),thepump is switched-off again.

Ifthecontrollerdoesnotworkperfectly,pleasecheckthefollowing items:

Ifthecontrollerdoesnotswitchonwhenthereisapowersupply available please check the fuses.The controller isprotectedbyafinefuseT4A,whichcanbereplacedafterhavingremovedthehousingandthecover.Asparefuseisenclosedonthebacksideofthecover.

Pleasecheckthesensors.Sensorswhicharenotconnected,musthavefollowingresistancevaluesdependingonthegiventemperature.

3. Tips for fault diagnostics

ResistancevaluesofthePt1000-sensors

1S1 S2

2 3 4 7RO RC N N L

8 9 10 11

S1

RO

S2

ON

OFF1 2 3 4

C

ON

OFF1 2 3 4

A

ON

OFF1 2 3 4

B

S1=collectorsensor

S2=storesensor

RO=solarpump

bracketforsparefuse(interiorpartofcover)

Usegroundclampcollectiveterminalstrip!

°C -10 -5 0 5 10 15 20 25 30

W 961 980 1000 1019 1039 1058 1078 1097 1117

°C 35 40 45 50 55 60 65 70 75

W 1136 1155 1175 1194 1213 1232 1252 1271 1290

°C 80 85 90 95 100 105 110 115

W 1309 1328 1347 1366 1385 1404 1423 1442

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1S1 S2

2 3 4 7RO RC N N L

8 9 10 11

S2

Heat exchange (betweentwostores)

S1

R0

ON

OFF1 2 3 4

C

ON

OFF1 2 3 4

A

Ifthetemperaturedifference∆Tbetweenstore(1)-sensorS1andstore(2)-sensorS2exceedsthetemperatureadjus-tedatthecontroller,thecirculationpumpisswitched-on.Heat is transported from the store (1) into store (2); in the course of this the temperature difference is reduced.

Iftheadjustedtemperaturedifferenceisunderrunbyadif-ferenceof1,6K(hysteresis,cannotbechanged),thepumpis switched-off again.

S1 = store(1)sensorS2 = store(2)sensorRO= circulationpump

Ifthetemperaturedifference∆TbetweenstoresensorS1and heating circuit return sensor S2 exceeds the tempera-turedifferenceadjustedatthecontroller,the3-way-valveisswitched-over.Thereturntemperatureoftheheatingcircuitisraisedbytheheatofthestoresothatlessconventionalenergyisnecessarytoreachtherequiredflowtemperature;in the course of this the temperature difference is reduced.

Iftheadjustedtemperaturedifferenceisunderrunbyadif-ferenceof1,6K(hysteresis,cannotbechanged),thevalveisswitched to initial position.

S1 = storesensorS2 =heatingcircuitreversesensorRO=3-way-valve

Heating circuit - raising the return temperature1

S1 S22 3 4 7

RO RC N N L8 9 10 11

S1

C

A

RO

S2

ON

OFF1 2 3 4

ON

OFF1 2 3 4

Usegroundclampcollectiveterminalstrip!

Usegroundclampcollectiveterminalstrip!

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Thecontrollercomparesthetemperatureatthesensorofthesolidfuelboilerorboilerinsertedinstove(S1)withthetemperatureatthesensoratstore(S2).Ifthedetec-ted temperature difference is higher than or equals the preadjustedvalue∆T,thepump(RO)isswitched-onwhensimultaneouslythegivenminimumtemperatureisreachedorexceeded.Thetemperaturedifferenceisreduced.

Store charge

1S1 S2

2 3 4 7RO RC N N L

8 9 10 11

S1

R0

S2

ON

OFF1 2 3 4

C

ON

OFF1 2 3 4

A

ON

OFF1 2 3 4

B

Ifthedifference1,6K(hysterisis,candifferenceisreduced,cannotbechanged)underrunstheadjustedtemperaturedifference,thepumpisswitched-offagain.

S1=boilersensor

S2=storesensor

RO=circulationpump

t

Usegroundclampcollectiveterminalstrip!

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Pumpstartsforashortmoment,switches-off,switches-onagain,etc.(„controllerhunting“)

Is the temperaturedif-ference at the controller too small?

no yes

Wrongpositionofthecollector sensor?

yes

Change ∆Ton and ∆Toffaccordingly.

Mount the collector sen-

soratsolarflow

warmest collector out-

put);

Pumpstartsupverylateandsoonstopsworkingsoon. Thetemperaturedifferencebetweenstoreandcollectorincreasesenormouslyduringoperation;thecollectorcir-cuit cannot dissipate the heat.

Collector circuit pump defect ?

no yes

Heat exchanger calci-fied??

yes

Conrtol/replacement

Decalificatiomno

Heatexchangerblocked?

yesno Cleaning

Heat exchanger too small?

yes Newcalculationofthedimension.

Change ∆Ton and ∆Toffaccordingly.

Switch-on-temperature difference ∆Ton too large

no yes

Collectorsensorunfavour-ableplaced (e.g. contactsensor instead of immersion sleevesensor?

o.k.no

Pumpisoverheated,butnoheattransferfromcollectortothestore,feedflowandreturnflowareequallywarm,perhapsalsobubbleinthelines.

Ventsystem;increasesys-tem pressure to at least staticprimarypressureplus0,5bar; ifnecessa-rycontinuetoincrease,switch the pump for a short time off and on.

Airinthesystem?

no yes

Isthecollectorcircuitblockedatthedirttrap?

yes

Clean the dirt trap

Ifnecessaryactivatetubecollector function.

yes

o.k.

5. Annex: Fault finding

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Stores are cooled during the night.

Doescollectorcircuitpump run during the night?

no yesCheck the controller functions

Collector temperature is higher at night than am-bienttemperature?

no yesCheck operation of non returnvalves.

Istroreinsulationsuffi-cient?

yes noIntensifytheinsulation.

Isstoreinsulationcloseenough to the store?

yes no

Replaceor intesify theinsulation.

Are the store connceti-ons insulated?

yes noInsulateconnections.

Warmwateroutflowupwards?

no yes

Change connection and let the water flow side-wards or through a siphon (bowdownwards); lessstore losses now?

Thesolarcircuitpumpdoesnotworkalthoughthecoll-ectorisobviouslywarmerthanthestore.

DoesthecontrolLEDflash?

yes no

Doesthepumpstartupin manual operation?

yes

Thereisnocurrent;checkfuses/replacethemandcheckpowersupply.

Theadjustedtemperaturedifference for starting the pump is too high; choose avaluewhichmakesmoresense.

no

Isthecurrentofthepumpreleasedbythecontroller?

Free the pump using a screwdriver;inoperationnow?

Is thepumpdefective -replace it.

Are the fuses of the controller o.k.?

Controllerseemstobedefective-replaceit.

no

no

no yes

Replace the fuses.

no yes

o.k.

Controlthereturnflowpreventerinwarmwatercirculation- o.k.

no

Cleaning or replacement.

yes Isthepumpstuck?

yes

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Distributed by:

Comments:Thedesignandthespecificationscanbechangedwithoutadvancenotice.Theillustrationscandifferfromtheproductionmodel.

RESOL - Elektronische Regelungen GmbH

Heiskampstraße 10 D-45527Hattingen

Tel.: +49(0)2324/9648-0 Fax: +49(0)2324/9648-55

www.resol.de info@resol.de

Notes