Elson 170zd - User Instructions and System Operation

16
WARNINGS
IFWATERDISCHARGESFROMTHE
TEMPERATURE/PRESSURERELIEFVALVEON
CYLINDERSHUTDOWNTHEBOILER.DONOT
TURNOFFANYWATERSUPPLY.CONTACT
ACOMPETENTINSTALLERFORUNVENTED
WATERHEATERSTOCHECKTHESYSTEM.
DONOTTAMPERWITHANYOFTHESAFETY
VALVESFITTEDTOTHESYSTEM.IFAFAULT
ISSUSPECTEDCONTACTACOMPETENT
INSTALLER.
BENCHMARK
ThecylinderiscoveredbytheBenchmarkScheme
whichaimstoimprovethestandardsofinstallation
andcommissioningofdomesticheatingand
hotwatersystemsintheUKandtoencourage
regularservicingtooptimisesafety,efciencyand
performance.
Benchmarkismanagedandpromotedbythe
HeatingandHotwaterIndustryCouncil.Formore
informationvisitwww.centralheating.co.uk.
Pleaseensurethattheinstallerhasfullycompleted
theBenchmarkChecklist(Page22&23)ofthis
manual and that you have signed it to say that
youhavereceivedafullandclearexplanationof
itsoperation.Theinstallerislegallyrequiredto
completeacommissioningchecklistasameansof
complying with the appropriate Building Regulations
(England&Wales).
AllinstallationsmustbenotiedtoLocalArea
BuildingControleitherdirectlyorthrougha
CompetentPersonsScheme.ABuildingRegulations
ComplianceCerticatewillthenbeissuedtothe
customerwhoshould,onreceipt,writethe
NoticationNumberontheBenchmarkChecklist.
Thisproductshouldbeservicedregularlytooptimise
itssafety,efciencyandperformance.Theservice
engineershouldcompletetherelevantService
RecordontheBenchmarkChecklistaftereach
service.
TheBenchmarkChecklistmayberequiredinthe
eventofanywarrantyworkandassupporting
documentation relating to home improvements
intheoptionaldocumentssectionoftheHome
ImprovementsPack.
FLOWPERFORMANCE
Wheninitiallyopeninghotoutletsasmallsurgein
owmaybenoticedaspressuresstabilise.Thisis
quitenormalwithunventedsystems.Insomeareas
cloudinessmaybenoticedinthehotwater.Thisis
duetoaerationofthewater,isquitenormalandwill
quicklyclear.
TEMPERATURECONTROLS–DIRECTUNITS
IMMERSIONHEATER(S)
Acombinedadjustablethermostatandthermal
cut-outisprovidedforeachimmersionheater.The
thermostatisfactorysettogiveawaterstorage
temperatureofapprox.55°Cto60°C.Accesstothe
thermostatcanbemadebyopeningtheimmersion
heatercover-DISCONNECTTHEELECTRICAL
SUPPLYBEFOREOPENINGTHECOVER(S).
Temperatureadjustmentismadebyinsertingaat
bladedscrewdriverintheslotontheadjustment
discontopofthethermostatandrotating.The
adjustmentrange1to5representsatemperature
rangeof12°Cto68°C(60°Cwillbeapproximately
position4).Ifinanydoubtcontactacompetent
electrician.
DONOTbypassthethermalcut-out(s)inany
circumstances.
TEMPERATURECONTROLS-INDIRECTUNITS
Thecylinderunitsarettedwithanindirect
thermostatandthermalcut-out.Thesecontrolsmust
bewiredinserieswiththe2portmotorisedzone
valvesuppliedtointerrupttheowofprimarywater
around the heat exchanger coil when the control
temperaturehasbeenreached.Thecontrolsare
located within the lower terminal housing along with
theimmersionheaterthermostat.Thethermostat
isfactorysettogiveawaterstoragetemperature
ofapprox.55°Cto60°C.Accesstothethermostat
canbemadebyopeningtheterminalhousing
cover-DISCONNECTTHEELECTRICALSUPPLY
BEFOREOPENINGTHECOVER.Temperature
adjustmentismadebyinsertingaatbladed
screwdriverintheadjustmentknobandrotating.The
minimumthermostatsettingis12°C.Theadjustment
range1to5representsatemperaturerangeof12°C
to68°C(60°Cwillbeapproximatelyposition4).Ifin
anydoubtcontactacompetentelectrician.
Animmersionheaterisalsoprovidedforuseshould
theindirectheatsourcebeshutdownforanypurpose.
The immersion heater control temperature is set
usingtheimmersionheaterthermostat.
DONOTbypassthethermalcut-out(s)inany
circumstances.
OPERATIONALFAULTS
Operationalfaultsandtheirpossiblecausesare
detailedintheFaultFindingsectionofthisbook.It
isrecommendedthatfaultsshouldbecheckedbya
competentinstaller.
The air volume within the expansion vessel will
periodically require recharging to ensure expanded
waterisaccommodatedwithintheunit.Adischarge
ofwaterINTERMITTENTLYfromtheexpansion
valve will indicate the air volume has reduced to
a point where it can no longer accommodate the
expansion.
USER INSTRUCTIONS