Resol DeltaSol AX Instruction manual

DeltaSol
®AX
www.resol.de
Thank you for buying a RESOL product.
Please read this manual carefully in order to put this controller to the best possible use.
RESOL DeltaSol
®AX
Mounting
Connection
Operation
Application examples
manual
*48000250* 48000250

DeltaSol
®AX
© RESOL 06255 deltasol_ax.monen.indd
|2
Contents
Imprint ................................................................................2
Security devices..................................................................2
Technical data and function survey ..................................3
1. Installation...................................................................4
1.1 Mounting......................................................................................... 4
1.2 Electrical connection.................................................................... 4
2. Functions and Settings...............................................5
2.1 Micro-switch and potentiometer.............................................. 5
2.2 Switch-on temperature difference............................................ 5
Scope of delivery:
• controllerDeltaSol
®AX
(full kit incl. 2 temperature sensors)
• sparefuseundercover
• accessorybagconsistingofsiliconesealing,fastening
screwsanddowels,strainreliefclampandscrews
• manual
2.3 Manual operation.......................................................................... 5
2.4 Maximum temperature limitation ............................................. 6
2.5 Anti-Freeze protection................................................................ 6
2.6 Minimum temperature limitation .............................................. 6
2.7 Blinking codes................................................................................ 6
3. Tips for fault diagnostics............................................ 7
4. Applications of use ..................................................... 7
5. Annex: Fault diagnostics .......................................... 10
Security advice
Pleasepayattentiontothefollowingsecurityadviceinorder
toavoiddangeranddamagetopeopleandproperty.
Instructions
Attentionshouldbepaid
-tothestatutoryprovisionsforpreventionofindustrial
accidents,
-tothestatutoryprovisionsforenvironmentalprotection,
-totheHealthandSafetyatWorkAct1974
- to Part P of the Building Regulations 2005
- to BS7671 Requirements for electrical installations and
relevantsafetyregulationsofDIN,EN,DVGW,TRGI,TRF
andVDE.
Thisinstructionisexclusivelyaddressedtoauthorised
skilled personnel.
-Onlyqualifiedelectriciansshouldcarryoutelectrical
works.
-Initialinstallationshouldbeeffectedbynamedqualied
personnel
Declaration of conformity
We, RESOL Elektronische Regelungen GmbH, D-45527
Hattingen, declare under our sole responsibility that our
product DeltaSol
®AX complies with the following stan-
dards:
EN55014-1
EN60730-1
Accordingtothe regulationsof the above directives,the
productislabelledwith :
89/336/EWG
73/23/EWG
Hattingen,07.07.2006
RESOLElektronischeRegelungenGmbH,
ppa.GeraldNeuse

DeltaSol
®AX
© RESOL 06255 deltasol_ax.monen.indd
3 |
Electrostatical discharges can lead to damages of
electronic components!
Dangerousvoltageoncontact!
DeltaSol
®AX
Thanks to its tough and deliberately simple design concept this low priced
differentialcontrollercanbewidelyusedinsolar,heatingandairconditioning
systems.Thelargecontrolrangeandadjustabletemperaturedifferencesensure
thatthisunitcanbeusedinalmostallapplicationswhereswitchingprocesses
arecontrolledbytemperaturedifference.
The outer cover is available with an optional seal to protect the electronics
against dripping water.
The controller checks a temperature diffference ∆T measured by two tem-
perature sensors by comparing this difference with a preadjusted switch-on
difference(adjustablewithintherangeof2...16K).Thecontrolofthesystemis
effectedbyastandardrelay(=changeovercontact),towhichseveralmotorsor
electricalvalvescanbeconnected.Thecontrollerswitches-ON,iftheadjusted
temperaturedifferenceisexceeded;ifthisdifferenceisunderrunby1,6K,the
controller switches-OFF.
130
45
Technical data
Housing:
plug-in plastic PC-ABS
Protection type: IP20/DIN40050
Ambient temp.: 0 ... 40 °C
Size: Ø130mm,45mmheight
Mounting: wall mounting
Display: 1 function control lamp
Inputs: 2sensorinputsPT1000
Outputs:1standardrelay(changeover
contact)
Switch-on difference:
∆T2...16Kadjustable
Switch-off difference:
1,6Kbelowswitch-ondifference
Control range: -20 ... +150 °C
Power consumption: max. 4A
Powersupply:220...240V~
Order indications
RESOL DeltaSolAX 115 211 70
RESOL DeltaSolAX- full kit - 115 211 80
incl. 2 temperature sensors Pt1000 (1xFKP6,1xFRP6)
Accessory
Overvoltage protection
ItishighlyrecommendedtoconnecttheRESOLovervoltageprotectionSP1to
allcollectorsensorsinordertoavoidovervoltages(e.g.bylightning).
RESOL SP1 180 110 10

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®AX
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Theunitshouldbelocatedinternally.Itisnotsuitablefor
installationinhazardouslocationsandshouldnotbesited
neartoanyelectromagneticeld.Pleaseensuresensorcables
andacpowersupplyareseparated.
1. Choose a location, drill two holes of Ø6 mm side by
sidewithadistanceof113mmandtintheenclosed
dowels.
2. Fixthecontrollerbymeansoftheenclosedscrews(4x
40 mm)(pos. 1).
3.Theelectricalconnectionmustbeeffectednow.Power
supplyofthecontroller(210...250V)mustbeeffected
byexternalpowerswitch.
Connection of the sensors at the clamps:
1/2 = sensor1(e.g.collectorsensor)
3/4 = sensor2(e.g.storesensor)
Connection of the consumer to the clamps:
7 = normallyopencontactrelay(RO)
8 = breakcontactrelay(RC)
9 = neutralcontactrelay(N)
ground clamp (collective terminal strip)
ac power supply to the clamps:
10 = neutralconductorN
11 = conductorL
ground clamp (collective terminal strip)
Theguidesoftherequiredinsertionchannelsmustbebroken
awayatthebottomsideofthecover.
Thecablesaretobexedtothehousingbyenclosedstrain
relief supports and screws (pos.2).
If necessary, activate anti-freeze function by jumper. If
protection against dripping water is required insert the
siliconesealingringintothegrooveonthebaseplatetaking
care not to stretch it.
Putonthecoverandscrewit(pos.3).Ifnecessary,adjust
temperature difference ∆T.
Putonhousingcoverandscrewit(pos.4).
1. Installation Warning!
Switch-off power supply before opening
the housing.
1
4
3
2
housingcover
cover
base
sensor 1
sensor 2
relay(consumer)
acpowersupply
ground clamp
(collectiveterminalstrip)
fuseT4A
1.2 Electrical connection
Insertsealingbandwithoutstrainintothenut

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®AX
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2.1 Micro-Switch and Potentiometer
2. Functions and Settings
Themicro-switch(A)activates(ON)deactivates(OFF)
following functions:
•Manualoperation(micro-switch1)
•Maximumtemperaturelimitation(micro-switch2)
•Anti-freezeprotection(micro-switch3)
•Minimumtemperaturelimitation(micro-switch4)
Potentiometer(B)adjuststhetemperatureforthemaxi-
mum or minimum temperature limitation in °C.
Potentiometer(C)adjuststheswitch-ontemperatureinK
2.3 Manual operation mode
ON
OFF
1234
1
ON
OFF
1234
ON
OFF
1234
B
C
2.2 Switch-on temperature difference
ON
OFF
1234
A
Thecontrollercheckstheexistingtemperaturedifference
betweentemperaturesensorS1andtemperaturesensor
S2withtheadjustedtemperaturedifference∆Tatthe
potentiometer(C).Thecontrollerswitchesovertherelay
assoonasthetemperaturereachestheadjustednominal
value,theoperatingcontrollampashesgreen.Iftheset
valueisunderrunbyadifferenceof1,6K(hysteresis,cannot
bechanged)thecontrollerswitchestherelayback.
Thefactorysettingfortheswitch-ontemperaturedifference
ispreadjustedto6K.Adjustabletemperaturedifference
withinarangeof2...16K.
ON
OFF
1234
C
A
Duringcomissioningandmaintenancetherelaycanbe
switched-onpermanentlybymanualoperation.
Themanualoperationmodeisactivatedanddeactivated
bythemicro-switch.Whenthemanualoperationmodeis
activated,theoperatingcontrollampashesgreen.
Thefactorysettingforthemanualoperationmodeisdeac-
tivated(micro-switchinOFF-position),thecontrollerisin
automatic operation.

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®AX
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Micro-switch3activatesananti-freezeprotectionfunction.
Theanti-freezeprotectionfunctionreactstothetempe-
rature of sensor S1(e.g. a collector sensor). As soon as
thissensormeasuresatemperaturebelow+4°C,warmer
waterispumpedfromthestoretothecollectortoprevent
damages to the collector; in the course of this the operating
control lamp ashes green.As soon as a temperature of
+5°Cisreached,thepumpswitches-offagain.
Please note:Asthereisonlyalimitedheatquantityof
thestoreavailableforthisfunction,theanti-freezefunction
shouldonlybeusedinregionswithfewdaysoftemperatures
around freezing point.
Thefactorysettingfortheanti-freezefunctionisdeactivated.
(micro-switch in OFF-position).
2.5 Anti-freeze protection
3
ON
OFF
1234
2.6 Minimum temperature limitation
4
Micro-switch4activatesthetemperaturelimitationasami-
nimumtemperaturelimitation.Thetemperatureisadjusted
asalimitingvalueforthesensormountedontheterminals
S1atthepotentiometer„temperaturelimitation“.Therelay
won’tswitchuntiltheadjustedtemperatureisreached.This
functionshouldpreferablybeusedincombinationwitha
solidfuelboilerinordertoavoiduegascondensation
withintheboiler.Bymaintainingaminimumtemperature
limitationintheheatgeneratorauegascondensationon
the boilerwalls isavoided.Iftheminimumtemperatureis
underrun,theoperatingcontrollampashesred.
Thefactorysettingfortheminimumtemperaturelimitation
isdeactivated(micro-switchinOFF-position).Whenactiva-
ted,atemperaturelimitationof60°Cispreadjusted.
ON
OFF
1234
ON
OFF
1234
A
A B
2.4 Maximum temperature limitation
2
Micro-switch2activatesthetemperaturelimitationasa
maximumtemperaturelimitation.Thetemperatureforthe
temperaturesensormountedonclampS2isadjustedasa
limitingvalueatthepotentiometer(B).Iftheadjustedma-
ximumtemperatureisexceeded,therelayisswitchedover
andsopreventse.g.afurtherstoragecharge(protection
againstoverheating).Ifthemaximumstoretemperatureis
exceeded,theoperatingcontrollampashesred.
Thefactorysettingforthemaximumtemperaturelimitation
isactivated(micro-switchinON-position),Thetemperature
limitationispreadjustedto60°C.Adjustabletemperature
differencewithinarangeof20...90°C.
ON
OFF
1234
ON
OFF
1234
BA
2.7 Blinking codes
TheLEDshowstheactualoperatingstatusofthecont-
roller.
Readyforuse red
Relayactive green
Manualmodeactive green(blinking)
Maximum temperature exceeded red(blinking)
Anti-freezeprotectionactive green(blinking)
Minimum temperature under-run red(blinking)

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®AX
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4. Application examples
Standard solar system with 1 store
Ifthecurrenttemperaturedifference∆Tbetweencollector
sensor S1 and store sensor S2 exceeds the temperature
differenceadjustedatthecontroller,thesolarpumpis
switched-on. Heat is transported from the collector to the
store; in the course of this the temperature difference is
reduced.Iftheadjustedtemperaturedifferenceisunderrun
byadifferenceof1,6K(hysteresis,cannotbechanged),the
pump is switched-off again.
Ifthecontrollerdoesnotworkperfectly,pleasecheckthe
following items:
Ifthecontrollerdoesnotswitchonwhenthereisapower
supply available please check the fuses.The controller is
protectedbyanefuseT4A,whichcanbereplacedafter
havingremovedthehousingandthecover.Asparefuseis
enclosedonthebacksideofthecover.
Pleasecheckthesensors.Sensorswhicharenotconnected,
musthavefollowingresistancevaluesdependingonthegiven
temperature.
3. Tips for fault diagnostics
ResistancevaluesofthePt1000-sensors
1
S1 S2
2347
RO RC NNL
8910 11
S1
RO
S2
ON
OFF
1234
C
ON
OFF
1234
A
ON
OFF
1234
B
S1=collectorsensor
S2=storesensor
RO=solarpump
bracketforsparefuse
(interiorpartofcover)
Usegroundclampcollectiveterminal
strip!
°C -10 -5 0 5 10 15 20 25 30
W961 980 1000 1019 1039 1058 1078 1097 1117
°C 35 40 45 50 55 60 65 70 75
W1136 1155 1175 1194 1213 1232 1252 1271 1290
°C 80 85 90 95 100 105 110 115
W1309 1328 1347 1366 1385 1404 1423 1442

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®AX
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1
S1 S2
2347
RO RC NNL
8910 11
S2
Heat exchange
(betweentwostores)
S1
R0
ON
OFF
1234
C
ON
OFF
1234
A
Ifthetemperaturedifference∆Tbetweenstore(1)-sensor
S1andstore(2)-sensorS2exceedsthetemperatureadjus-
tedatthecontroller,thecirculationpumpisswitched-on.
Heat is transported from the store (1) into store (2); in the
course of this the temperature difference is reduced.
Iftheadjustedtemperaturedifferenceisunderrunbyadif-
ferenceof1,6K(hysteresis,cannotbechanged),thepump
is switched-off again.
S1 = store(1)sensor
S2 = store(2)sensor
RO= circulationpump
Ifthetemperaturedifference∆TbetweenstoresensorS1
and heating circuit return sensor S2 exceeds the tempera-
turedifferenceadjustedatthecontroller,the3-way-valveis
switched-over.Thereturntemperatureoftheheatingcircuit
israisedbytheheatofthestoresothatlessconventional
energyisnecessarytoreachtherequiredowtemperature;
in the course of this the temperature difference is reduced.
Iftheadjustedtemperaturedifferenceisunderrunbyadif-
ferenceof1,6K(hysteresis,cannotbechanged),thevalveis
switched to initial position.
S1 = storesensor
S2 = heatingcircuitreversesensor
RO= 3-way-valve
Heating circuit - raising the return temperature
1
S1 S2
2347
RO RC NNL
8910 11
S1
C
A
RO
S2
ON
OFF
1234
ON
OFF
1234
Usegroundclampcollectiveterminal
strip!
Usegroundclampcollectiveterminal
strip!

DeltaSol
®AX
© RESOL 06255 deltasol_ax.monen.indd
9 |
Thecontrollercomparesthetemperatureatthesensorof
thesolidfuelboilerorboilerinsertedinstove(S1)with
thetemperatureatthesensoratstore(S2).Ifthedetec-
ted temperature difference is higher than or equals the
preadjustedvalue∆T,thepump(RO)isswitched-onwhen
simultaneouslythegivenminimumtemperatureisreached
orexceeded.Thetemperaturedifferenceisreduced.
Store charge
1
S1 S2
2347
RO RC NNL
8910 11
S1
R0
S2
ON
OFF
1234
C
ON
OFF
1234
A
ON
OFF
1234
B
Ifthedifference1,6K(hysterisis,candifferenceisreduced,
cannotbechanged)underrunstheadjustedtemperature
difference,thepumpisswitched-offagain.
S1=boilersensor
S2=storesensor
RO=circulationpump
t
Usegroundclampcollectiveterminal
strip!

DeltaSol
®AX
© RESOL 06255 deltasol_ax.monen.indd
|10
Pumpstartsforashortmoment,switches-off,switches-on
again,etc.(„controllerhunting“)
Isthetemperaturedif-
ference at the controller
too small?
no yes
Wrongpositionofthe
collector sensor?
yes
Change ∆Ton and ∆Toff
accordingly.
Mount the collector sen-
soratsolarow
warmest collector out-
put);
Pumpstartsupverylateandsoonstopsworkingsoon. Thetemperaturedifferencebetweenstoreandcollector
increasesenormouslyduringoperation;thecollectorcir-
cuit cannot dissipate the heat.
Collector circuit pump
defect ?
no yes
Heat exchanger calci-
ed??
yes
Conrtol/replacement
Decalicatiom
no
Heatexchangerblocked?
yesno Cleaning
Heat exchanger too
small?
yes Newcalculationofthe
dimension.
Change ∆Ton and ∆Toff
accordingly.
Switch-on-temperature
difference ∆Ton too large
no yes
Collectorsensorunfavour-
ableplaced(e.g.contact
sensor instead of immersion
sleevesensor?
o.k.no
Pumpisoverheated,butnoheattransferfromcollector
tothestore,feedowandreturnowareequallywarm,
perhapsalsobubbleinthelines.
Ventsystem;increasesys-
tem pressure to at least
staticprimarypressure
plus0,5bar;ifnecessa-
rycontinuetoincrease,
switch the pump for a
short time off and on.
Airinthesystem?
no yes
Isthecollectorcircuit
blockedatthedirttrap?
yes
Clean the dirt trap
Ifnecessaryactivatetube
collector function.
yes
o.k.
5.Annex: Fault finding

DeltaSol
®AX
© RESOL 06255 deltasol_ax.monen.indd
11 |
Stores are cooled during the night.
Doescollectorcircuit
pump run during the
night?
no yes
Check the controller
functions
Collector temperature is
higher at night than am-
bienttemperature?
no yes Check operation of non
returnvalves.
Istroreinsulationsuf-
cient?
yes no
Intensifytheinsulation.
Isstoreinsulationclose
enough to the store?
yes no
Replaceorintesifythe
insulation.
Are the store connceti-
ons insulated?
yes no Insulateconnections.
Warmwateroutow
upwards?
no yes
Change connection and
let the water flow side-
wards or through a siphon
(bowdownwards);less
store losses now?
Thesolarcircuitpumpdoesnotworkalthoughthecoll-
ectorisobviouslywarmerthanthestore.
DoesthecontrolLED
ash?
yes no
Doesthepumpstartup
in manual operation?
yes
Thereisnocurrent;check
fuses/replacethemand
checkpowersupply.
Theadjustedtemperature
difference for starting the
pump is too high; choose
avaluewhichmakesmore
sense.
no
Isthecurrentofthe
pumpreleasedbythe
controller?
Free the pump using a
screwdriver;inoperation
now?
Is thepumpdefective -
replace it.
Are the fuses of the
controller o.k.?
Controllerseemstobe
defective-replaceit.
no
no
no yes
Replace the fuses.
no yes
o.k.
Controlthereturnow
preventerinwarmwater
circulation- o.k.
no
Cleaning or replacement.
yes Isthepumpstuck?
yes

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®AX
© RESOL 06255 deltasol_ax.monen.indd
|12
Distributed by:
Comments:
Thedesignandthespecicationscanbechangedwithoutadvancenotice.
Theillustrationscandifferfromtheproductionmodel.
RESOL - Elektronische Regelungen GmbH
Heiskampstraße 10
D-45527Hattingen
Tel.: +49(0)2324/9648-0
Fax: +49(0)2324/9648-55
www.resol.de
[e-mail]
Notes