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De
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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
*48000250*
4800
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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 [email protected]
Notes