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CustomerService
IfyouhavequestionsaboutorderingAirSourceHeatPumpreplacementpartsand
products,pleaseusethefollowingcontactinformation:
CustomerServiceandTechnicalSupport
(9A.M.to4P.M. Monday - Friday)
Phone: 01472 828086
Email: [email protected]
Website
www.enviro-tex.co.uk
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TableofContents
IMPORTANTSAFETYPRECAUTIONS............................................................................. 3
Section1
.................................................................................................................................5
Introduction............................................................................................................................5
ProductOverview...............................................................................................................................................................5
GeneralFeatures................................................................................................................................................................5
Section2.................................................................................................................................6
Installation..............................................................................................................................6
MaterialsneededforInstallation....................................................................................................................................6
InstallationLocation..........................................................................................................................................................8
Installationdetails..............................................................................................................................................................8
DrainageandCondensation............................................................................................................................................9
WaterConnections..........................................................................................................................................................10
Plumbinginstallationrequirements............................................................................................................................11
ElectricalConnections....................................................................................................................................................11
GeneralInformation.........................................................................................................................................................11
Powersupply.....................................................................................................................................................................13
GroundingandOverCurrentProtection....................................................................................................................13
ControllerPCboardSettings........................................................................................................................................13
ElectricalWiringDiagram...............................................................................................................................................14
Section3
...............................................................................................................................16
OperatingHeatPump........................................................................................................ 17
LCDUser-FriendlyInterfaceController......................................................................................................................17
Generalinstruction..........................................................................................................................................................17
Controllerpanel................................................................................................................................................................17
ControllerSet-Up..............................................................................................................................................................18
1. Temperaturesetting:........................................................................................................................................18
2. Systemstatusdisplayvalues:......................................................................................................................18
3. Parametersetting:............................................................................................................................................19
4. Clocksetting......................................................................................................................................................21
5. Timersetting......................................................................................................................................................21
6. InstallerPasswordControl:...........................................................................................................................22
7. Manual/ForcedDefrosting:............................................................................................................................23
8. Heatingmode:...................................................................................................................................................24
GeneralOperatingGuide................................................................................................................................................24
Users’Guide......................................................................................................................................................................25
ProductProtection...........................................................................................................................................................26
Section4
...............................................................................................................................27
Generalmaintenance.........................................................................................................27
ControllerErrorCodes....................................................................................................................................................27
InspectionandService...................................................................................................................................................28
OwnerInspection.............................................................................................................................................................28
Troubleshooting...............................................................................................................................................................29
ProblemsandCorrectiveAction..................................................................................................................................29
Section5
...............................................................................................................................35
Componentsassembly......................................................................................................35
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IMPORTANTSAFETYPRECAUTIONS
ImportantNotice:
ThisguideprovidesinstallationandoperationinstructionsfortheAirSourceHeatPump.Consult Enviro-tex
withanyquestionsregardingthisequipment.
AttentionInstaller: Thisguidecontainsimportantinformationabouttheinstallation,operationandsafeuseof
thisproduct.Thisinformationshouldbegiventotheownerand/oroperatorofthisequipmentafterinstallation
orleftonorneartheheatpump.
AttentionUser: Thismanualcontainsimportantinformationthatwillhelpyouinoperatingandmaintainingthis
heatpump.Pleaseretainitforfuturereference.
WARNING -Beforeinstallingthisproduct,readandfollowallwarningnoticesandinstructionswhichare
included.Failuretofollowsafetywarningsandinstructionscanresultinsevereinjury,death,orproperty
CodesandStandards
TheAirSourceHeatPumpmustbeinstalledinaccordancewiththelocalbuildingandinstallationcodesasper
theutilityorauthorityhavingjurisdiction.Alllocalcodestakeprecedenceovernationalcodes.Intheabsenceof
localcodes,refertothelatesteditionoftheNationalElectricCode(NEC)inthelocalgovernmentElectricCode
(CEC)forinstallation.
DANGER —Riskofelectricalshockorelectrocution.
Theelectricalsupplytothisproductmustbeinstalledbyalicensedorcertifiedelectricianin
accordancewiththeNationalElectricalCodeandallapplicablelocalcodesandordinances.
Improperinstallationwillcreateanelectricalhazardwhichcouldresultindeathorseriousinjury
topoolorspausers,installers,orothersduetoelectricalshock,andmayalsocausedamageto
property.Readandfollowthespecificinstructionsinsidethisguide.
WARNING-Toreducetheriskofinjury,donotpermitchildrentousethisproduct.
ConsumerInformationandSafety
TheAirSourceHeatPumpsaredesignedandmanufacturedtoprovideyearsofsafeandreliableservicewhen
installed,operatedandmaintainedaccordingtotheinformationinthismanualandtheinstallationcodes
referredtoinlatersections.Throughoutthemanual,safetywarningsandcautionsareidentifiedbythe
“ “symbol.Besuretoreadandcomplywithallofthewarningsandcautions.
HeatPumpEnergySavingTips
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Ifyoudonotplantousehotwaterforaprolongedperiod,thenyoumightchoosetoturntheheatpumpoffor
decreasethetemperaturesettingofthecontrolseveraldegreestominimizeenergyconsumption.
Enviro-tex offersthefollowingrecommendationstohelpconserveenergyandminimizethecostofoperating
yourheatpumpwithoutsacrificingcomfort.
1. Amaximumwatertemperatureof60°Cisrecommended.
2. Itisrecommendedtoturnofftheheatpumpwhenambientairtemperatureislessthan-10°Corifon
holiday forlongerthanaweek.
3. Tosaveenergy,itisrecommendedthattheheatpumpisoperatedduringdaytimewhentheambient
temperatureishigher.
4. Trytoinstalltheheatpumpattheventilatedplacesindoor,Ifitmustbeinstalledoutdoor,Wherepossible,
sheltertheheatpumpfromprevailingwinds,rainandsnow.Alwaysuseashelterwhenpractical,whichwill
reducethepossibilityoffrostingandicing.
GeneralInstallationInformation
1. Installationandservicemustbeperformedbyaqualifiedinstallerorserviceagent,andmustconformtoall
national,state,andlocalcodesand/orsafetyregulations.
2. ThisAirSourceHeatPumpisspecificallydesignedforhotwatersupply&heatingatanydomesticand
commercialplaceswhereneedmedium-temperaturehotwater is required.
Section1
Introduction
ProductOverview
AirSourceheatpumpstransferheatfromtheambientairtowater,providinghigh-temperaturehotwaterupto
60°C.TheuniqueLowambient-temperatureheatpumpiswidelyusedforhousewarming.WithEnviro-tex
innovative&advancedtechnology,thedirect-heatingheatpumpcanoperateverywellat-25℃ambient
temperaturewithhighoutputtemperaturesupto60℃,whichensuresthecompatibilitywithnormalsized
radiatorbasedsystemswithoutsupplementation.Comparedwithtraditionaloil/LPGboilers,Enviro-tex
high-temperatureheatpumpproducesupto50%lessCO2whilstsaves80%runningcost.
Enviro-tex heatpumpsarenotonlyhighlyefficient,butalsoeasyandsafetooperate.
GeneralFeatures
1.Lowrunningcostsandhighefficiency
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·Ahighcoefficientofperformance(COP)ofupto5resultsinlowerrunningcostscomparedwithtraditional
ASHPtechnology.
·Noimmersionheatersupplementisrequired.
2.ReducedCapitalCosts
·Simpleinstallation
·Compatiblewithtraditionalradiatorsystems,eliminatingtheexpenseofinstallingunderfloorheatingor
changingtooversizedradiators.
3.HighComfortLevels
·Highstoragetemperatureresultsinincreasedhotwateravailability.
4.Nopotentialdangerofanyinflammable,gaspoisoning,explosion,fire,electricalshock whichare
associatedwithotherheatingsystems.
5.Adigitalcontrollerisincorporatedtomaintainthedesiredwatertemperature.
6.Long-lifeandcorrosionresistantcompositecabinetstandsuptosevereclimates.
7.The latest EVI compressorensuresoutstandingperformance,ultraenergy
efficiency,durabilityandquietoperation.
8.Self-diagnosticcontrolpanelmonitorsandtroubleshootsheatpumpoperationstoensuresafeandreliable
operation.
9.IntelligentdigitalcontrollerwithfriendlyuserinterfaceandblueLEDbacklight.
10.Separateisolatedelectricalcompartmentpreventsinternalcorrosionandextendsheatpumplife.
11.Theheatpumpcanoperatedowntoambientairtemperatureof-25℃.
Section2
Installation
Thefollowinggeneralinformationdescribeshowtoinstalltheairsourceheatpump.
Note: Beforeinstallingthisproduct,readandfollowallwarningnoticesandinstructions.Onlya
qualifiedservicepersonshouldinstalltheheatpump.
MaterialsneededforInstallation
Thefollowingitemsareneededandaretobesuppliedbytheinstallerfor all heatpumpinstallations:
1.Plumbingfittings.
2.Levelsurfaceforproperdrainage.
3.Ensurethatasuitableelectricalsupplylineisprovided.Seetheratingplateontheheatpumpforelectrical
specifications.Pleasetakeanoteofthespecifiedcurrentrating.Nojunctionboxisneededattheheat
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pump;Connectionsaremadeinsideoftheheatpumpelectricalcompartment.Conduitmaybeattached
directlytotheheatpumpjacket.
4.ItisadvisedtousePVCconduitfortheelectricalsupplyline.
5.Use a correctly sized water pump to obtain minimum water flow rate.
6.Afilteronthewaterinletisneeded.
7.Theplumbingshouldbeinsulatedtoreduceitsheatloss.
Note: Werecommendinstallingshut-offvalvesontheinletandoutletwaterconnectionsforeaseof
serviceability.
CycleHeatingLowTempAirSourceHeatPumpSpecification
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Note:
Theabovedesignandspecificationsaresubjecttochangewithoutpriornoticeforproductimprovement.
Detailedspecificationsoftheunitspleaserefertonameplateontheunits,
Correctinstallationisrequiredtoensuresafeoperation.Therequirementsfor Enviro-tex heatpumpsinclude
thefollowing:
1. Dimensionsforcriticalconnections.
2. Fieldassembly(ifrequired).
3. Appropriatesitelocationandclearances.
4. Properelectricalwiring.
5. Adequatewaterflow.
Thismanualprovidestheinformationneededtomeettheserequirements.Reviewallapplicationand
installationprocedurescompletelybeforecontinuingtheinstallation.
InstallationLocation
CAUTION!
1.DONOTinstalltheheatpumpneartohazardousmaterialsandplaces
2.DONOTinstalltheheatpumpunderdeepslopingroofswithoutgutterswhichwillallowrainwater,mixed
withdebris,tobeforcedthroughtheunit.
3.Placetheheatpumponaflatslightlypitchedsurface,suchasconcreteorfabricatedslab.Thiswillallow
properdrainageofcondensationandrainwaterfromthebaseoftheunit.Ifpossible,theslabshouldbeplaced
atthesamelevelorslightlyhigherthanthefiltersystem/equipment.
Installationdetails
Allcriteriagiveninthefollowingsectionsreflectminimumclearances.However,eachinstallationmustalsobe
evaluated,takingintoaccounttheprevailinglocalconditionssuchasproximityandheightofwalls,and
proximitytopublicaccessareas.Theheatpumpmustbeplacedtoprovideclearancesonallsidesfor
maintenanceandinspection.
1. Theinstallationareamusthavegoodventilationandtheairinlet/outletmustnotbehindered.
2. Theinstallationareamusthavegooddrainageandbebuiltonasolidfoundation.
3. Donotinstalltheunitinareasaccumulatedwithpollutionslikeaggressivegas(chlorineoracidic),dust,
sandandleavesetc.
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4. Foreasierandbettermaintenanceandtroubleshooting,noobstaclesaroundtheunitshouldbecloserthan
500mm.Andnoobstructionswithin2m,vertically,fromtheunitforairventilation.(SeeFigure1)
Figure1
5. Theheatpumpmustbeinstalledwithshockproofbushestopreventvibrationand/orimbalance.
6. Eventhoughthecontrolleriswaterproof,careshouldbetakentoavoiddirectsunlightandhigh
temperature.Inaddition,theheatpumpshouldbeplacedtoensurequalityviewingofthecontroller.
7. Theplumbingpipesmustbeinstalledwithpropersupporttopreventpossibledamageduetovibration.
Runningwaterpressureshouldbekeptover196kpa.Otherwise,boosterpumpshouldbeinstalled.
8. Theacceptableoperatingvoltagerangeshouldbewithin ±10%oftheratedvoltage.Whenheatpumpunits
areinstalledinparallel,ensurethatthevoltagedifferences,betweentheseunits,arewithin ±2%.
lTheheatpumpunitmustbegrounded/earthedforsafetypurposes.
DrainageandCondensation
Condensationwilloccurfromtheevaporatorwhentheunitisrunninganddrainatasteadyrate,depending
uponambientairtemperatureandhumidity.Themorehumidtheambientconditions,themorecondensation
willoccur.Thebottomoftheunitactsasatraytocatchrainwaterandcondensation.Keepthedrainholes,
locatedonthebottompanoftheunitbase,clearfromdebrisatalltimes.
InstallationDiagram(SeeFigure2)
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Figure2
WaterConnections
WaterConnectionsattheHeatPump
QuickConnectfittingsarerecommendedtobeinstalledonthewaterinletandoutletconnections.（SeeFigure
3）
Figure3
Tapwaterisplumbedtotheinlet,locatedontherightsideoftheheatpumpunit.Heatedwaterflowsthrough
theoutlet,locatedontherightsideoftheheatpumptothewatertank.
ItisrecommendedtousestainlesssteelandPVC/PPRpipesfortheheatpumpplumbing.Thewaterinletand
outletconnectiontotheheatpump(40mmorthreadedentryfemale)acceptsstainlesssteelorPVC/PPRpipe
fittings.
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CAUTION —Makesurethatflowrequirementsandtapwaterturnoverratescanbemaintainedwiththe
installationofadditionalheatpumpsandplumbingrestrictions.
Plumbinginstallationrequirements
1. Whenwaterpressureexceeds490Kpa,pleaseusereducingvalvetoreducethewaterpressurebelow
294Kpa.
2. Eachpartconnectedtounitneedstobeconnectedwithmethodofloosejointandinstalledwith
intermediatevalve.
3. Ensurethatallplumbinghasbeenproperlycompletedandthenproceedtodoawaterleakageand
pressuretest.
4. Allthepipelinesandpipefittingsmustbeinsulatedtopreventheatloss.
5. Installadrainvalveatthelowestpointofthesystemtoenablethesystemtobedrainedduringfreezing
conditions(winterizing).
6. Installacheckvalveonthewateroutletconnectioninordertopreventbacksiphoningwhenwaterpump
stops.
7. Inordertoreducethebackpressure,thepipesshouldbeinstalledhorizontally
8.Andminimizetheelbows(90degreesconnections).Ifahigherflowrateisrequired,installabypassvalve
ElectricalConnections
WARNING —Riskofelectricalshockorelectrocution.
Ensurethatallhighvoltagecircuitsaredisconnectedbeforecommencingheatpump
installation.Contactwiththesecircuitscouldresultindeathorseriousinjurytousers,installers
orothers,duetoelectricalshockandmayalsocausedamagetoproperty.
CAUTION —Labelallwirespriortodisconnectionwhenservicingtheheatpump.Wiringerrorscancause
improperanddangerousoperation.Checkandensureproperoperationafterservicing.
GeneralInformation
Wiringconnectionsmustbedoneaccordingtothewiringdiagramfoundontheinsideoftheheatpumpaccess
panelorseeaddendumAforreference.
Theheatpumpmustbegrounded/earthed.Agroundlugisprovidedontheinsideoftheheatpumpelectrical
compartment.(Seethefollowingfigures)
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DualSystemThreePhase：EVTX38000/45000/70000Ⅱ
Powersupply
1. Ifthesupplyvoltageistoolowortoohigh,itcancausedamageand/orresultinunstableoperationofthe
heatpumpunit,duetohighinrushcurrentsonstartup.
2. Theminimumstartingvoltageshouldbeabove90%ofratedvoltage.Theacceptableoperatingvoltage
rangeshouldbewithin ±10%oftheratedvoltage.Whenheatpumpunitsareinstalledinparallel,ensure
thatthevoltagedifference,betweentheseunits,iswithin ±2%ofeachother.Thevoltagedifference
betweenphasesofathreephasepowersupplyshouldbewithin ±2%.
3. Ensurethecablespecificationsmeetthecorrectrequirementsforthespecificinstallation.Thedistance
betweentheinstallationsiteandmainspowersupplywillaffectthecablethickness.Followthelocal
electricalstandardstoselectthecables,circuitbreakersandisolatorbreakers.
GroundingandOverCurrentProtection
Inordertopreventelectricalshockincaseofleakagefromunit,installtheheatpumpaccordingtolocal
electricalstandard.
1. Donotinterruptthevoltagesupplytotheheatpumpfrequentlyasthismayresultashorterlifeexpectance
oftheheatpump.
2. Wheninstallingovercurrentprotection,ensurethatthecorrectcurrentratingismetforthisspecific
installation.
3. TheCompressor,fancoilunitandheatpumpwaterpumpallhaveAC-contactorandthermorelay
protection.Therefore,intheprocessofinstallationanddebugging,firstlymeasureeachofthe
aforementionedcomponents’current,andthenadjustthecurrentprotectionrangeofthethermorelays.
ControllerPCboardSettings
TheControllerPCBhasapinselectabletoggleswitchwhichmustbesetaccordingtothespecificinstallation
requirement.
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NOTE:
Beforeanychangesaremadetothepinsettings,ensurethatthemainssupplypowerisOFFatthe
circuitbreakerorphysicallydisconnectedfromthemainssupply.
ElectricalWiringDiagram
SinglePhase：EVTX10300 / EVTX15000
EV1 Water replenishing valve
EV3
KM A.C. contactor
KA Intermediate relay
FW Water flow switch
4WV Four-way valve
HP
LP High-pressure switch
Low-pressure switch
Coded instructions：
EV2 Backwater valve
OCP
Over current Pro.
EV4
A
B
C
ON
1 2 3 4
K-80
N N N
LN
Control
panel
KM
Compressor Fan
KA2
KM1 KA1 KA2
Current
HP
PP
LP
PUMP
EV1
EV2
FW
KA1
OCP
HGQ
4WV
EV4EV3
KM2
factory connect line.
User connect line and confrgure related electrical appliance.
2. EV1 is water replenishing Electromagnetic valve,EV2 is backwater Electromagnetic valve.They are Configured by user.
Note：
1. The figure in is control line code.
Transformer
secondary 2
(blue)
secondary 1
(yellow)
primary
(white)
Auxiliary Heating
water gage（N/A）
High Pressure Switch
High Water Level
Low Pressure Switch
Water Flow Switch
Median Water Level
Low Water Level
COM
Compressor
4-way Valve
Water Pump
Filling
water valve
Fan
Solenoid Valve of
Discharging&Condensing
Crankshaft
Heater
Auxiliary
Heating
Back-water
Valve
Injection
Solenoid Valve
COM
Median Water
Level
High Water
Level
Low Water
Level
Water Tank Sensor
Coil Pipe Sensor
Ambient Sensor
Discharging Sensor
Return Water Sensor
Outlet Sensor
Remarks:
1.For system using three phase, switch 1 must be set to
OFF. When testing phase order and phase rotation,for
singal phase, switch must be set to ON.
2.For direct+cycle heating mode, switch 4 must be set to
OFF. For cycle heating mode, switch 4 must be set to ON.
3.For swimming pool systme, switch 2 must be set to OFF.
4.Switch 3 standby.
Solenoid Valve of Discharging&Condensing
Injection Solenoid Valve
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ThreePhase：EVTX18000
water gage（N/A）
High Pressure Switch
High Water Level
EV1
Water replenishing valve
EV3
Solenoid Valve of Discharging&Condensing
KM
A.C. contactor
KA
Intermediate relay
FW
Water flow switch
4WV
Four-way valve
HP
LP
High-pressure switch
Low-pressure switch
Coded instructions：
EV2
Backwater valve
OCP
Over current Pro.
EV4
Injection Solenoid Valve
primary
(white)
secondary 1
(yellow)
A
B
C
Transformer
ON
1 2 3 4
K-80
secondary 2
(blue)
N N N
Control
panel
Compressor Fan
KA2
KM1 KA1 KA2
HP
PP
LP
Pump
COM
EV1
Median Water
Level
High Water
Level
Low Water
Level
EV2
FW
EV1
EV2
KA1
OCP
HGQ
4WV
EV4EV3
N
RST
KM
Auxiliary Heating
KM3
KM2
factory connect line.
User connect line and confrgure related electrical appliance.
2. EV1 is water replenishing Electromagnetic valve,EV2 is backwater Electromagnetic valve.They are Configured by user.
Note：
1. The figure in is control line code.
Low Pressure Switch
Water Flow Switch
Median Water Level
Low Water Level
COM
Compressor
4-way Valve
Water Pump
Filling
water valve
Fan
Solenoid Valve of
Discharging&Condensing
Crankshaft
Heater
Auxiliary
Heating
Back-water
Valve
Injection
Solenoid Valve
Water Tank Sensor
Coil Pipe Sensor
Ambient Sensor
Discharging Sensor
Return Water Sensor
Outlet Sensor
Current
Remarks:
1.For system using three phase, switch 1 must be set to
OFF. When testing phase order and phase rotation,for
singal phase, switch must be set to ON.
2.For direct+cycle heating mode, switch 4 must be set to
OFF. For cycle heating mode, switch 4 must be set to ON.
3.For swimming pool systme, switch 2 must be set to OFF.
4.Switch 3 standby.
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DualSystemThreePhase：EVTX38000/45000/70000
1#
Fan
KA2
Control
panel
A
B
C
380V/
3N
/50Hz
R S T N
CON2
CON9
CON10
N
CON1
TEMP11
TEMP10TEMP9TEMP7TEMP4 TEMP5 TEMP6 TEMP8
Ambient Sensor
Discharging Sensor 1#
Coil Pipe Sensor 2#
Coil Pipe Sensor 1#
Outlet Sensor 1#
Water Tank Sensor
LED
HP1
HP2
LP1
LP2
KM1
1#
Compressor
KM2
FR2FR1
FR2
FR1
FW
Power Supply
（12V）
（10V）
PP P P
KA1
COM.
EV1
High Water
Level
Low Water
Level
EV2
COM.
High Water Level
Water Pressure
(N/A)
2#
Fan Water
pump
2#
Compressor
Median
Water
Level
Water Flow Switch
High Pressure Switch 1#
High Pressure Switch 2#
Low Pressure Switch 1#
Low Pressure Switch 2#
Mid. Water Level
Low Water Level
Backwater Valve
Water Circulation Pump
Fan
Compressor 1#
Compressor 2#
4-Way Valve
Filling Water Valve
Crankshaft Heater
Injection Solenoid
Valve
Cooling Discharging
Valve
Outlet Sensor 2#
Discharging Sensor 2#
Remarks:
1.For system using three phase, switch 1 must be set to
OFF. When testing phase order and phase rotation,for
singal phase, switch must be set to ON.
2.For direct+cycle heating mode, switch 4 must be set to
OFF. For cycle heating mode, switch 4 must be set to ON.
3.For swimming pool systme, switch 2 must be set to OFF.
4.Switch 3 standby.
ON
1 2 3 4
Note：
1. The figure in is control line code.
2. EV1 is water replenishing Electromagnetic
valve,EV2 is backwater Electromagnetic
valve.They are Configured by user.
User connect line and confrgure
related electrical appliance.
Factory connect line.
EV1
Water replenishing valve
EV3 Cooling Discharging
Valve
KM
A.C. contactor
KA
Intermediate relay
FW
Water flow switch
4WV
Four-way valve
HP
LP
High-pressure switch
Low-pressure switch
Coded instructions：
EV2
Backwater valve
BK
Air switch
EV4
Injection Solenoid Valve
FR
Thermal overload relay
Transformer
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Section3
OperatingHeatPump
LCDUser-FriendlyInterfaceController
Generalinstruction
Thecontrolpanelappliestoasinglesystemheatpump.
Theoperationpanelfeatures:
1. Capacitivetouchingkeysforhigheroperatingsensitivityandunlimitedkeyoperations.
2. Minimalelectromagneticsusceptibilityandinterference.
3. Stylishappearanceforeasyviewingpurposes.
4. DustandWaterProof.
5. Installedonwallindoorforconvenientoperation.
6. AutomaticKeyLockfunction(AKL).
Controllerpanel
OperatingController
Operationguide
Whenthepowersupplytotheheatpumpisswitchedonforthefirsttime,anaudibletoneisheardfromthe
controller.TheLCDwillbedisplayedinadimmingmode(nobacklight).Atthistimethetouchkeysarelocked
(see “lockkeydisplay”symbol).
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Keysexplanation:
UnlockingKeys: Pressthe “power”keyfor3secondsuntilyouhearanaudibletone,thenreleasethekey.
ThebacklightoftheLCDdisplaywillturnonandthekeypadisunlockedwithno “lockkeydisplay”symbol.
Thekeypadwillautomaticallylockafter60seconds,displayingthe “lockkeydisplay”symbol.
“power”key: Bypressingthe “power”key,theunitcanbeswitchedONorOFF.
“▲” and “▼” keys:PresstoIncreaseandDecreasevalues.
“setting”key: PressforInquiry,ParameterandPasswordsetting
“timer”key: Pressfortimersetting,timereliminateandclocksetting.
ControllerSet-Up
1.Temperaturesetting:
Makesurekey-padisunlocked.Pressthe “▲” key, “temperaturesetting”symbolisflashingandtheset
temperatureisdisplayed.Pressthe “▲”keyagain,thedisplayedtemperaturewillincrease.Pressthe
“▼”key, “temperaturesetting”symbolisflashingandthesettemperatureisdisplayed.Pressthe “▼”key
again,thedisplayedtemperaturewilldecrease.Therangeofwatertemperaturecanbesetfrom20°C
(68°F)to60°C(140°F)(default=60°C(140°F)).
NOTE：
lItisrecommendedthatthemaximumsettingtemperaturebe60°C.
2.Systemstatusdisplayvalues:
Makesurekey-padisunlocked. Pressthe “setting”keyandenterintoinquirypanelwith “inquire”
symbolondisplay.
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Forasingleheatpumpsystem(SHPS),theinquirycodesarefromA1toA9andforadualheatpump
system(DHPS),theinquirycodesarefromA1toA9forSystemAandb1tob9forSystemB.Bypressing
the “setting”keysequentially,thedesiredinquirycodewillbeselectedandvaluedisplayed.Toexitthe
inquirypanel,pressthe “setting”keyonceafterthelastinquirycode(Er)isreached.Detailsareshownas
follows:
3.Parametersetting:
NOTE:THESESETTINGSAREPRE-SETACCORDINGTOTHEMANUFACTURER’SSPECIFICATION
FORSAFEHEATPUMPOPERATIONS.DONOTCHANGETHESESETTINGSASITWILL
INFLUENCETHESAFEOPERATIONOFTHEHEATPUMP.
Pressthe “setting”keyformorethan3seconds,untilanaudibletoneisheardandenterintothesetting
panelwith “setting”symbolondisplay.
Singleheatpumpsystem Dualheatpumpsystem
SystemA SystemB
A1—coilpipetemp. A1—coilpipetemp.1 b1—coilpipetemp.2
A2—00 A2—00 b2—00
A3—compressordischargingtemp. A3—compressordischargingtemp.1 b3—compressordischargingtemp.2
A4—ambienttemp. A4—ambienttemp. b4—ambienttemp.
A5—wateroutlettemp. A5—wateroutlettemp.1 b5—wateroutlettemp.2
A6—backwatertemp. A6—backwatertemp. b6—backwatertemp.
A7—00 A7—00 b7—00
A8—compressorcurrent A8—compressorcurrent b8—compressorcurrent
A9—00 A9—00 b9—00
Er—errorcode Er—errorcode
Page 20 of 38
2014 Enviro-tex is a trademark of Gray's Heating Ltd. All rights reserved.
Thisdocumentissubjecttochangewithoutpriornotice.
Bypressingthe “setting”keysequentially,thedesiredsettingcodewillbeselected.Thevalueofeach
settingcanbeadjustedbypressing “▲” and “▼” keys(Settingvaluesseebelow).Toexitthesetting
panel,pressthe “setting”keyonceafterthelastsettingcode(P6)isreached.
Detailsareshownasfollows:
L1- Settingisusedtocompensate/calibrateforthedifferencebetweendisplayedwatertemperature(A6)
andtheactualmeasuredwatertankwatertemperature(useagoodqualitythermometer).(0~15°C
(32°F~59°F),default:0°C(32°F))
L2- Minimumoutletwatertemperaturedeviation.Thisvaluesettingissettoindicatetothecompressor
whentore-startuntildesiredtemperatureisreached. (3~18°C(37.4~64.4°F)default:5°C(41°F)).For
example,setwatertankwatertemp.=25°C(77°F),L2=5°C(41°F),thecompressorwillstopat25°C
(77°F)andre-startat20°C(68°F)
L4- Desiredwatertankwatertemperaturelimit(30~99°C(86~210.2°F)default:60°C)
L5- allowedelectricheatingambienttemperature(0~35°C(32~95°F),default:7°C(44.6°F),where0°C
(32°F)meansnoelectricheating).
L8-NO
H1-defrostingperiod(20~99minutesdefault:45minutes)
H2- defrostingstarttemperature(0~-15°C(32~59°F)default:-1°C(30.2°F))
H3-defrostingtime(5~20miniutesdefault:8minutes)
H4-defrostingexitingtemperature(1~40°C(33.8~104°F),default:15°C)
P1-NO
P2- NO
P3- NO
P4- NO
P5-NO
P6-NO
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