Redring PSA12 Powerstream Ascari 12kW User manual

Type
User manual
POWERSTREAM Ascari -p. 1 -
In s t a l l a t I o n g u I d e
Ref. : 1871184 - 10.051
Mo d e l n° 45-551860
Psa 12
POWERSTREAM Ascari -p. 2 -
1 - Installationandconguration ......................................................................p. 03
1.1 - Quick reference guide ..................................................................................................................p. 03
1.2 - Install options ...............................................................................................................................p. 04
1.3 - Boiler (serial numbers of 0500151 and over) ...............................................................................p. 05
1.4 - Menu options ...............................................................................................................................p. 06
1.5 - Summer / Winter mode ................................................................................................................p. 07
  1.6-Underoorheating .......................................................................................................................p. 07
2 - InstallationandDevicinginstructions .........................................................p. 08
2.1 - Introduction ..................................................................................................................................p. 08
2.2 - Important information ...................................................................................................................p. 09
  2.3-Technicalspecication ................................................................................................................. p. 10
2.4 - Preparation ..................................................................................................................................p. 11
2.4.1 - Opening case ..................................................................................................................p. 11
2.4.2 - Electrical compartment ....................................................................................................p. 12
   2.4.3-Selectingthermalcut-out.................................................................................................p. 12
2.5 - Installation requirements .............................................................................................................. p. 13
2.5.1 - Location ...........................................................................................................................p. 13
2.6 - Installation .................................................................................................................................... p. 13
2.6.1 - Main Unit .........................................................................................................................p. 13
2.6.2 - Plumbing .........................................................................................................................p. 14
   2.6.2.1-Radiators/Underoor ........................................................................................ p. 14
2.6.3 - Filling loop .......................................................................................................................p. 15
2.7 - Electrical ......................................................................................................................................p. 16
2.7.1 - Power selection ...............................................................................................................p. 17
2.8 - Commissioning and testing .......................................................................................................... p. 17
  2.9-Boilerconguration ...................................................................................................................... p. 18
2.9.1 - Automatic / Manual operation ..........................................................................................p. 19
2.10 - Pump speed ............................................................................................................................... p. 19
  2.11-Troubleshooting ..........................................................................................................................p. 19
2.12 - Servicing .................................................................................................................................... p. 19
  2.13-Dimensions-hydraulicconnections ..........................................................................................p. 20
2.14 - Power terminal ...........................................................................................................................p. 21
  2.15-Connectiontotheelectricity ....................................................................................................... p. 22
2.16 - Regulation circuit drawing .......................................................................................................... p. 23
   2.16.1-Operatingfromaswitchedlive ...................................................................................... p. 23
   2.16.2-Directroomthermostatconnectionsanddirectcylinderthermostat ............................. p. 24
2.17 - Control accessories wiring .........................................................................................................p. 25
   2.17.1-Operatingfromaswitchedlive ...................................................................................... p. 25
   2.17.2-Directroomthermostatconnectionsanddirectcylinderthermostat ............................. p. 26
2.18 - Wiring diagrams .........................................................................................................................p. 27
2.19 - 3 Speed water pump .................................................................................................................. p. 29
2.20 - Control pannel description ......................................................................................................... p. 30
2.21 - Regulation settings ....................................................................................................................p. 31
2.22 - Operating ................................................................................................................................... p. 33
2.22.1 - Automatic / Manual operation ........................................................................................p. 33
   2.22.2-Requestedheatingtemperaturesettinginmanualmode .............................................p. 33
   2.22.3-Summer/Wintershift ....................................................................................................p. 33
   2.22.4-Programmingthemaximumoutputsettingoftheboiler ................................................p. 34
   2.22.5-Temperaturesdisplay ....................................................................................................p. 34
2.23 - Counters ....................................................................................................................................p. 35
  2.24-Failuresdisplay ..........................................................................................................................p. 35
2.25 - Maintenance ..............................................................................................................................p. 36
  2.26-Troubleshooting .........................................................................................................................p. 36
CONTENTS
POWERSTREAM Ascari -p. 3 -
1 - INSTALLATION & CONFIGURATION
1.1 - Quick reference Guide
1. Itisrecommendedthattheboilerbeconnectedtoa10hourorsimilaroff-peaktariffthatprovidessome
daytimeoff-peakhours.
2. Wheretheoff-peaktariffisrestrictedachangeoverrelayshouldbeusedtoswitchpowertotheboilerwhen
theoff-peaksupplyisnotavailable.
3. Fillthesystemwithwaterpriortoturningontheelectricalsupplytotheboiler.
4. Ensurethesystemisushedthoroughlybeforelettinganyair/waterexitthroughthepressurereliefvalve
(dirtcanpreventthevalveclosing).
5. Checkthesystemisfullbyturningthepressurereliefvalvecap,andcheckwaterexitscorrectlythrough
thedischargepipe.
6. Amanualpressuregaugeshouldbeusedtocheckthesystempressurewhencold.Thepressureshouldbe
setbetween1bar&1.5bar.Noteallairshouldberemovedfromthesystembeforemeasuringthesystem
pressure.
6a Alternativewiththeelectricsupplyoff,theyellowbridgebetweenterminals10and11mayberemoved
beforellingthesystemforthenaltime(thispreventstheelementsturningon)andtheboilerpressure
gaugeusedtosetthecoldsystempressure.Oncesetto1-1.5bar,theboilershouldbeswitchedoffand
theyellowbridgereturnedtoitspositionbetweenterminals10&11.
POWERSTREAM Ascari -p. 4 -
1.2 - Install Options
1.SPACEHEATINGONLY(recommended)-directroomthermostatConnection
  •Theno-voltcontactsoftheroomthermostatshouldbeconnectedtoterminals1and2ofthe
boiler.
• Menu option 4 should be set to 01 to allow the boiler to be controlled from the room
thermostat.
2. OPERATING WITH HOT WATER CYLINDER
Redringrecommendtouseadirectelectricunventedcylinderfortheproductionandstorageofthehotwater
asthisischeaperthananindirectcylinder,requireslessplumbing(pipingandvalves)andismorethermally
efcient.
Whenusingtheboilerforunventedhotwaterandheating,thetwo-portmotorisedvalveshouldbeinsertedin
theowfromtheboiler.ADifferentialPressurevalveshouldthenbeconnectedbetweentheowandreturnat
apointbetweentheboilerandthetwo-portmotorisedvalve.
Installation Configuration Heating & Hot Water
ManM an
AutoAuto
+-
ManM an
AutoAuto
+-
ManM an
AutoAuto
+-
0 bar0 bar
4 bar
or
Under Floor
Heating
8 litre Expansion vessel
3-speed pump
Room
thermostat
3-port diverter valve
3bar pressure
relief valve
Air bleeders
Hot water
outlet
Cylinder
thermostat
manifold
Differential
Pressure
Valve
W-Plan
10 way connector
Switched Live
Two-port valve
Two-port
valve
POWERSTREAM Ascari -p. 5 -
1.3 - Boiler (serial numbers of 0500151 and over)
Two options are available:
Option 1 - OperatingfromaSwitchedLive
SwitchedLive
1. Theswitchedlivefromthe10-wayconnectorblockshouldbeconnectedtoterminal25,whichislocated
besidetherelaylocatedintoprightoftheboiler.
2.Intheset-upmenu,setoption04to1
3. Auto-adaptability(option6oftheset-upmenu)shouldbeturnedoff.
4.Theminimumcentralheatingcircuittemperature(option3oftheset-upmenu)shouldbeselectedtoprovide
centralheatingandhotwatersafely.
5. Theboilershouldbesettooperateinwintermode(pressandholdtheradiatorkeyuntilthesnowake
indicator illuminates).
6. Allotheroptionsintheset-upmenushouldbesettotheMenuoptionslistedbelow.
Option2–DirectCylinderThermostat&Roomthermostatconnections
 •Thebrownwiresshouldberemovedfromterminals1and2andbeplacedintoterminals5and
6respectively.
 •Theroomthermostatno-voltNormallyOpencontactsoftheroomthermostatshouldbeconnected
betweenterminals1and2oftheboiler.Intheset-upmenu,setoption04to1.
 •Thecylinderthermostatnormallyopencontact(240V)shouldbeconnectedtoterminal25,wich
islocatedbesidetherelaylocatedintoprightoftheboiler.
 •Intheset-upmenu,setoption12to01
set option 13 to 00
POWERSTREAM Ascari -p. 6 -
1.4 - Menu Options
Theset-upmenushouldbeconguredasfollows,someoftheseparameterswillbemodiedbyinstructionsin
theprevioussections.
Option  Setting
02 80oC or as required 21-80oC
03 30oC or as required 21oC-maximumtemperatureset
04 1 if operating from a switched live or if a room
    thermostatinstalled0ifnot(doneverselect2)
05 1 if option 4 set to 1
06 1  recommended(unlessinstructedotherwise)
07 0   mandatory
11 1 min or user dened 1-6minutes delay in switching
elements.
12 0  mandatory
13 0   mandatory
14 n/a
15 0  mandatory
16 1 for 12kw boiler operation
    forreducedmaximumoutputpowersee§2.7.1
17 à 22 n/a
23 0  mandatory
Notes: In normal operation press the + button to check if the room thermostat is calling for heat once, a 1 indicates a call for heat. Press
the + button a second time and if auto-adaptability has been selected the temperature correction applied will be displayed (Option
06 Auto-adaptability adjusts the temperature of the heating circuit for the most efcient and temperature stable operation. )
POWERSTREAM Ascari -p. 7 -
1.5 - Summer / Winter Mode
The right-hand snow ake symbol should be illuminated indicating winter mode. If the sunshine symbol is
illuminated,selectwintermodebypressureandholdingtheradiatorbuttonontheboilerfor3seconds.InSummer
modetheheatingcircuitisswitchedoffbuthotwater,ifinstalledwillbestillbeheated.

 •Forunderoorheatingthe60oCinternaltemperaturecut-outshouldbeselected.
 •Whereunderoorandhotwatercylinderareusedinthesameheatingcircuititisnecessarytousethe
100oCTemperaturecut-outintheboilerandincludeaseparate60oCthermalcut-outfortheunderoor
heatingcircuit.
POWERSTREAM Ascari -p. 8 -
POWERSTREAM Ascari -p. 9 -
2-INSTALLATION&DEVICINGINSTRUCTIONS
Features
•SelectableWaterTemperature
 -radiators/Underoor(21-80oC)
•60oC or 100oCthermalcut-outsuitableforunderoorheatingorradiators
•RoomThermostatoperation
•FrostProtection,5oC minimum temperature
•Pumpprotection-onceadayoperationwhensystemisoff
•Pumpoverrunfacility
•4-stagesteppedturnon/off
•Weeklyalternativeswitchstart-upforprolongedlife
•Automaticwatertemperaturevariationfor50%on-offcycles(withroomthermostat)
•Switchoperationcounter–monitorsswitchusage
•Systempressuredisplay
WaterHeating
Itisrecommendedthattheboilerbeusedforcentralheatingpurposesonlyandhotwaterbestoredandheated
byadirectelectrichotwatercylinder.Thisallowshotwatertobeheatedovernightonanoff-peaktariffand
reducesheatlossesbetweentheboilerandthecylinder.
2.1 - Introduction
TheRedringPowerstreamAscariboilerisanallelectricdomesticcentralheatingboilersuitableforuseona230V
52A50Hzsupply.Theunitiseasytoinstallandrequiresnoue,makingitidealforapartmentsorpropertiesin
conservation areas.
Theunitissuppliedreadyforoperationasa12KW230Vsinglephaseboilerandwillautomaticallymodulatedown
to10,8and6KW.Themaximumoutputpowermayalsobemanuallylimitedtooperationatmaximumpower
levelsof10,8,6or4kWuponwhichtheboilerwillproportionallymodulatetolowerpowerlevels.
Finishedinacleanwhitecaseandwithdimensionsof620mmheightx405mmwidth,theboilerissuitablefor
installationinakitchenarea.Withthermalcutoutselectableat60oC or 100oCtheboilerissuitableforstandard
wetradiatorsystemsorunderoorheating.
Therearenoventilationrequirementsassociatedwiththeoperationofthisboiler,howevertomaintainadry
atmosphereawellventilatedroomisrecommended.
POWERSTREAM Ascari -p. 10 -
2.2 - Important Information
• The information given in this booklet is a guide only.All installations must follow the current
regulationsforthistypeofdeviceandwherenoinformationorconictinginformationisgivenin
thisguidetothatofthecurrentregulations,thecurrentregulationswillapply.
•DisconnecttheElectricitySupplybeforeattemptingtoremovethecoveroftheboiler.
•Theboilerweighs38kgandrequirestwopersonstoliftandinstalltheproduct.Pleaseensureall
mountingxingsandthewallontowhichitistobeinstalledaresufcientlystrongtotaketheweight
oftheunitplusitswatercontents.
•Theheatingsystemmustbeinstalledbyacompetentpersonandtocurrentregulationsinforce
atthetime.
•Allwiringshouldconformtotheregulationsinforceatthetime.Theapplianceisapprovedtoa
protectionratingofIPX1.Thereforeiftheapplianceistobeinstalledinaroomcontainingabath
orashower,anyelectricalswitchorcontrolutilisingmainselectricitymustbesosituatedthatit
cannotbetouchedbyapersonusingthebathorshower.Attentionisdrawntotherequirements
ofthecurrentBS7671(I.E.EWiringRegulations)andinScotlandtheelectricalprovisionsofthe
Building Regulations applicable in Scotland.
•Completeallplumbingworkbeforeconnectingtheboilertotheelectricitysupply.
•Thisappliancemustbeearthed!
•Theboilershouldbepermanentlyconnectedtotheelectricitysupply,directfroma63Afusedsupply
ontheconsumerunitviaadoublepolelinkedswitchwithminimumcontactgapof3mm.Noother
appliancesshouldbepoweredfromthissupply.
•Theexpansionvesselispre-chargedto1bar(0.1MPa).Duringtheinstallationprocessandbefore
operatingtheboilerthisshouldbecheckedusingasuitablepressuregauge.
•A3bar(0.3MPa)pressurereliefdeviceisincorporatedwithintheproduct,thecoldsystempressure
shouldnotexceed1.5bar(0.15MPa).
•WhenusingwithradiatorsttedwithTRVcontrolstheheatingsystemmusthaveabypassradiator
ttedcapableofcirculatingwaterat350litres/hour.
•Thesystemshouldbeushedpriortoconnectingtheboilertoremoveallparticlesfromthepipework.
Donotusethettedpressurereliefvalvetoushthesystemasparticlestrappedinthevalvewill
cause incorrect valve operation.
•Theoutletofthepressurereliefvalveshouldbeleftopentotheatmosphere,anyconnectiontothe
outletpipemustbeofaminimumdiameterof15mm,shouldfallcontinuouslyandshouldterminate
sothatwater/steammayvisiblyandsafelydischarge.Shouldanywaterorsteambeseentobe
exitingfromthisoutlettheboilerelectricitysupplyshouldbeswitchedoffandtheRedringcustomer
service centre contacted.
Importantinformation
Thisapplianceisnotintendedforusebypersons(includingchildren)withreducedphysicalsensoryor
mentalcapabilities,orlackofexperienceandknowledge,unlesstheyhavebeengivensupervisionor
instructionconcerninguseoftheappliancebyresponsiblefortheirsafety.
Childrenshouldbesupervisedtoensurethattheydonotplaywiththeappliance.
POWERSTREAM Ascari -p. 11 -
•Adraincockshouldbeinstalledatthelowestpointintheheatingsystemtoallowthewaterinthe
heatingsystemtobedrainedasfullyaspossible.
•Whiletheboilerandheatingsystemmaybelledfromthecoldmainswatersupply,theboiler
mustbeisolatedfromthecoldmainswatersupplybyasuitablebreakinthesupplypipeduring
normal operation.
•FillingLoop- thisboilerisnotttedwithallingloop.Anyllingloopbeingttedshouldcomplywith
thewatersupply(waterttings)regulations1999SectionG24.1andG24.2.Allingloopshould
bettedatsomepointtoallowtheCHsystemtobelled.
•Theboilermustbeinstalledinanuprightpositionawayfromnearbyobjects(seeinstallationsection
forclearances)inaclean,dry,frostfreeplace.

ELECTRICAL
Supply    12kW@230V52A50Hz
     13kW@240V52A50Hz
MaximumPowerOutput  12kWmanuallyconvertibleto10,8,6or4KW
Modulation    Automaticthreeorfourstagereductionin2KW
steps
12 kW - 10-8-6
10 kW - 8-6-4
8 kW - 6-4-2
6 kW - 4-2
Fuserequirements 63Amp
Numberandcross-section 3x16²(Phase+Neutral+Earth)
PERFORMANCE
WaterPressure
Minimum 0.5Bar (0.05MPa)
  Maximum  2.5Bar(0.25MPa)
Nominal 2 Bar (0.2MPa)
Water Temperature
Minimum 21oC
  Maximum  80oC
WaterFlowRate
  Minimum  350litres/hour
  Nominal  700litres/hour
  Maximum  1400litres/hour
ThermalLimit
100oC Radiators
60oC   Underoor
POWERSTREAM Ascari -p. 12 -

Weight 38kg
Dimensions    620mmhx405mmwx280d
Rating IPX1
Storagecapacity 5 litres
Connections 1»( 26/34) female
HeatExchanger Cast Iron
Elements   2heaterscomprising3x2kwincoloyelements
ExpansionVessel 8 litres
Pump     3-speedmanuallyselectable
Thermalcut-outs  2unitsmanuallyselectable60oC or 100oC
2.4 - Preparation

Theboilermaybeopenedbyunscrewingthebottomtwoboltsacoupleofturns(theydonotneedtoberemoved
completely).Thefrontcovermaythenbepulledoutfromthebottomandliftedoffthetwotoppins.
Switchofftheelectricitysupply
totheboilerbeforeopening
theinternalcover.
POWERSTREAM Ascari -p. 13 -
2.4.2 - Electrical Compartment
Withthecoverremovedaccesstotheelectricalconnectionsisachievedbyundoingthescrewoftheelectricbox.
Onceopenedaccessisgainedtotheelectricalconnectors,foreasyinstallation.

Thethermalcut-outsaresituatedatthetopoftheboilerandmaybeselectedduringtheinstallationbyre-routing
theelectricalconnections.Theboilerisfactorysetwiththe100oCcut-outselectedforusewithradiatorheating
systems.IftheBoileristobeusedwithunderoorheatingremovetheconnectorsfromthe100oC sensor and
connecttothe60oCsensorensuringthereisagoodconnection.
Wherebothunderoorandhotwatercylinderareused,itisnecessarytousethe100°Ctemperaturecut-outin
theboilerandincludeaseparate60°Cthermalcut-outfortheunderoorheatingcircuit.
Thermalcut-outselection
(100degCforradiators,60degCforunderoor)
60°C 100°CConnector
POWERSTREAM Ascari -p. 14 -
2.5 - Installation Requirements
2.5.1 - Location
Theboilermustbelocatedatleast300mmaboveanyobjectto
allowtheelementstoberemoved.Atleast100mmisrequired
atthetopoftheboilertoallowforconnectionofpipework.
10mmisrequiredatthesidesoftheunit.
 The boiler must be mounted on an internal solid masonry
wallcapableofwithstandingtheweightoftheproductwhen
full of water.
Considerationshouldbegiventotheroutingofelectriccables
totheproductandthewiringtoathermostat(ifused).
 The location must be free from frost and excessive
moisture.
2.6 - Installation
2.6.1 - Main Unit
Oncethelocationoftheboilerhasbeenselected,
marktheholepositionsaspergure6.1below.Use
aspirit-leveltoensuretheholesarealignedcorrectly.
Access to the bottom screw hole is achieved by
removingthebottomelementplate.
Oncemarkedout,drill8mmdiameterholesandplug
withmasonryplugs.Screwinhighstrengthscrews
toadepththatallowstheinnerfaceofthescrew
headtoprotrudefromthewalladistancetoallowthe
mountingplatesattherearoftheboilertoengage
(approx5mm).
 With suitable equipment or an assistant raise the
boilertothexingpointandensureeachscrewhas
engagedintothemountingslots.Tightenthescrews
tosecuretheboilertothewall.
Oncexedtothewalltheboilermaybeplumbed
intothecentralheatingsystem.
Ø8 screw plug
Overall frame
pattern
Ø8 screw plug
300
29
605
10 10
100
300
POWERSTREAM Ascari -p. 15 -


Installtheheatingsystembringingtheowandreturnstotheboilerlocation.
Thesystemshouldbeushedpriortoconnectingtheboilertoremoveallparticlesfromthepipework.
Donotusethettedpressurereliefvalvetoushthesystemasparticlestrappedinthevalvewillcause
incorrect valve operation.
Atleastoneairbleedingdeviceshouldalsobeconnectedtothehighestpointoftheplumbingsystemto
removetrappedairandensuresilentrunningoftheheatingsystem.
IfusingradiatorswithThermostaticRadiatorValvesabypassradiatormustbettedwithlockshieldvalves
thatwillallowaowof350litres/hour.
Servicevalvesshouldbeconnectedtotheinletandoutletoftheboilerforeasymaintenance.
Althoughtheboilercanoperatewithoutaroomthermostatthisisrequiredforautomaticadjustmentof
boiler output temperature.
Whereunderoorheatingisbeingusedwithouthotwatercylinder,the60oCthermalcut-outmust
connectedinplaceofthefactoryselected100oCdevice–seesection4.3.
Adraincockisrequiredtobettedinthelowestpartoftheheatingsystemtoallowthesystemuidtobe
drainedfully.
Room
thermostat
Radiators
Service
valves
Under Floor safety limiter
if used with hot water cylinder
Air bleeders
Pump
Expansion
Relief Valve
Expansion
vessel
Underoor heating
OR
Drain
tap
POWERSTREAM Ascari -p. 16 -
Allingloopmustbeinstalledthatisolatesfromthecoldmainswatersupplyfromtheheatingsystemand
complieswiththecurrentbuildingandwaterregulationsinforceatthetime.
Theboilerincorporatesan8-litreexpansionvesselwhichissuitableforheatingsystemsasfollows:

Thisboilerisnotttedwithallingloop.Anyllingloopbeingttedshouldcomplywiththewatersupply(water
ttings)regulations1999SectionG24.1andG24.2.AllingloopshouldbettedatsomepointtoallowtheCH
systemtobelled.
Twotypesareshownbelow:
Stop
valve
Temporary Flexible Hose
Connection
To be removed immediately after
lling
Mains water
supply
Pressure Pump & reducing
valve
(if required)
Cistern &
Overow
Mains
water
supply
Heating
System Return
Double
check valve
assembly
Stop
valve
Stop
valve
Heating
System
Return
METHOD B
METHOD A
Recommendedandapprovedmethodforllingclosedcircuitsinahouse(R24-2aWaterRegulationsGuide)
POWERSTREAM Ascari -p. 17 -
2.7 - Electrical
WiringexternaltotheappliancemustbeinaccordancewiththecurrentI.E.EWiringregulations(BS7671)
forelectricalinstallationandanylocalregulations,whichapply.
Withtheboilerplumbedin,theelectricalconnectionscanbemade
 totheboiler:
Thisappliancemustbeearthed!
TheAscariboilercomeswithcage-clampconnectors.Theseareoperatedusinga2.5mmx0.4mmblade
screwdriverforaccessoryterminalsand3.5mmx0.5mmbladescrewdriverforpowerterminals.
Theboilershouldbepermanentlyconnectedtotheelectricitysupply,directfroma63Afusedsupplyonthe
consumerunitviaadoublepolelinkedswitchwithminimumcontactgapof3mm.Nootherappliancesshould
bepoweredfromthissupply.
Thenumberandcross-sectionofconnectorismandatory3x16²(phase+neutral+earth)(see§2.15
«connectiontotheelectricitysupply»)
Toconnectawire,insertthebladeofthescrewdriverintotheopeninglocatedjustaboveorbelowthecentral
markoftheterminalblockandpivotthebladetowardsthecentre.Thewiremaythenbeinsertedintothe
cageandthescrewdriverbladeremoved(see§2.14«Powerterminal»).
ROOMTHERMOSTAT-Thenovoltageconnectionsofaroomthermostatmaybeconnectedtoterminals
1(commoncontact)and2(NormallyOpencontact)oftheboiler(pleasecheckcompatibilitywiththermostat
manufacturersinstallationinstructions),routingthecablethroughthesmallercableentrypoints.Ifusinga
non-programmableroomthermostatitisrecommendedthattheno-voltageswitchedcontactsofaseparate
timer/programmerbeconnectinserieswiththeroomthermostattoterminal2oftheboiler.WARNING- a
switchedlivemustnotbeconnectedtotheboilerterminals.
Ifusedthecylinderthermostatnormallyopencontact(240V)shouldbeconnectedtoterminal25 of the
boiler’s electrical connectors ( see section Boiler electrical connections)
Thepowersupplycable(3x16²)shouldberoutedthroughthelargecableentrypointatthebottomofthe
boiler.Ifdesiredthecableentrymaybemovedtothetopoftheboilerbyremovingtheselfsealingnutfrom
thebottomtothetopentrypoint.
TheEarthwireshouldbeconnectedtothetopterminalmarkedwiththeEarthsymbol.
TheNeutralwireshouldbeconnectedtothelargeterminalmarked‘N’.
ThelivewiretothelargeterminallabelledPH.
DonotswitchontheelectricitysupplyuntilaskedtodosointheCommissioningandTestingsection.
Asaminimumitisrecommendedthataroomthermostatbeinstalledtocontroltheappliance.Thermostatic
radiatorvalvesmaybettedtothesystem,howevertheymustnotbettedintheroomwheretheroom
thermostatistted.Theremustbeatleastoneradiatorinstalledwithlockshieldvalvesthatshouldnotbe
closedandwillallow350litre/hrcirculation.FurtherguidancecanbeobtainedfromtheDomesticHeating
andHotWaterGuidetothebuildingregulations.
POWERSTREAM Ascari -p. 18 -
2.7.1 Power selection
Theboiler issuppliedas a12Kw modulatingboiler but canbe reducedto 10, 8,6 or4kw by disconnecting
individual elements.
* Remove blue connectors between power terminal and elements
according to drawing.
ex-work
R : Red
Bl : Black
W : White
B : Blue
12 kW 10 kW*
8 kW* 6 kW*
4 kW*
R
BBBB
WBl WBlR
BB
R
BBB
WBl WBlR
BB
R
BBB
WBl WBlR
B
R
BB
WBl WBlR
B
R
BB
WBl WBlR
Viewfrombellow

WaterTreatment,CleansingandFlushingtheHeatingSystem
NOTE: British Standard BS7593: 1992 stresses the importance of cleansing and ushing of the system to
ensure it continues to run efciently with the minimum of maintenance necessary. Halstead Boilers fully support
this professional approach and recommend that the system is cleansed with an effective chemical cleanser and
protected long term with a suitable inhibitor. Such products are available from Fernox and Sentinal.
Checkthepressureoftheexpansionvessel,thisshouldbefactorysetto1bar(0.1MPa).
Theheatingsystemshouldbelledusingtheapprovedinstalledllingloop.Ensureallradiatorvalvesare
open.Theinitialsystempressurewhencoldshouldbebetween1.0(0.lMPa)and1.5bar(0.15MPa).
Oncelledcheckthesystemforleaks.
Openthedraincockanddrainthesystemfully.
POWERSTREAM Ascari -p. 19 -
Rellthesystemfromthellingloop,toapressurebetween1-1.5bar(0.1-0.15MPa)andoperatethepressure
reliefvalvemanuallytocheckthatwaterrunsawaycorrectly,andthatthevalveclosescorrectly.
Whenboilerisinstandbymode,helptheairbleedingofinstallationbystartingaforcedcirculationfor2
minutes (press )
Topupthesystemto1.0bar(0.1MPa).
Disconnectthesystemfromthellingloop.
Checktheelectricconnectionsandthatallcoversetc.havebeenreplaced.Turnontheelectricitysupplyto
theboilerandallowtheunittodoitsselfdiagnosis.Referto§2.24ifafaultisdisplayed.
Useethyleneglycolonlywithincorporatedcorrosioninhibitor.Glycolratiamustbeunder10%.

Oncetheboilerhasinitialisedthefeatureoptionscanbeselected(seequickreferenceguideforoptions):
Press–and+togetherfor3secondstoentertheselectionmenu.Withreferenceto§2.21thetopdisplayshould
showaashing01.Usethe+/-keystoselecttheparametertobechangedandthetaporradiatorkeystochange
thesettingofanyselectedparameter:
02 Selectthemaximumtemperatureofthewatercirculatingintheheatingcircuit.
03 Selecttheminimumtemperatureofthewatercirculatingintheheatingcircuit.
04 Select1ifopratingfromaswitchedliveorifofroomthermostatisinstalledandconnectedto
theboiler(doneverselect2).
05 If04hasbeensetto1thissettingshouldalsobesetto1.
06 If04hasbeensetto1theboilercanautomaticallyadjustthewatertemperatureintheheating
circuitaccordingtoactualheat-uptimesoftheproperty,overridingtheminimumandmaximum
watertemperaturesettings.Ifthisfacilityisrequiredselect1,otherwiseset0.
07 Thisoptionshouldbesetto0.
08 n/a
09 n/a
10 n/a
11 Theboilercandelaytheswitchingonandoffoftheelementstoprovideasmoothpoweron-off
gradientandthenumberofon-offcyclesinashortperiod.Thedelaybetweenswitchesoperating
can be set from 1 to 6 minutes. (default is 2 min)
12 Thissettingshouldalwaysbesetto0.
13 Thissettingshouldalwaysbesetto0.
14 n/a
15 Thissettingshouldalwaysbesetto0
16 Thissettingshouldalwaysbesetto1
17 à 22 n/a
23 Thissettingshouldalwaysbesetto0
Press + & - togetherfor3secondstoexittheset-upmenu.
POWERSTREAM Ascari -p. 20 -
2.9.1 Automatic/ Manual Operation
TheboilermustbesettoManualoperationasfollows:
PressandholdtheAuto/Manbutton.ThedisplaywillshowAu or Man,presstheAuto/Manbuttonagainfora
shortperiodtotogglethedisplaysothatitshowsMan. Withthecorrectdisplayshowing,pressandholdAuto/
Man for 3 seconds to return to normal operating mode.
2.10 - Pump Speed
Theboilerisfactorysetatpumpspeed3,forlowerpumpspeedstheselectorinthecentreofthepumpmaybe
turnedto1or2usingalargeatbladedscrewdriver.

Theboilerhasmanyselectableoptions.Pleaseensurethecorrectselectionsaremadeforthetypeofinstallation
youhavemade.Ifyouhaveselectedtheuseofaroomthermostat,orhotwatercylinder,theboilerwillnotoperate
untilthesedevicesareconnected.
Theboilerindicatesaboilerfaultbyashing infrontofthesymbol«°C»,and or in front
ofthesymbol«bar»
PleasecalltheRedringCustomerServicedepartment–seeServicingsection.
FLASHINGSEGMENTSinfrontofbar–indicatethesystempressurehasfallenbelowtheminimum
operating pressure.
checkifwaterhasdischargedfromthepressurereliefvalve.IfsocallaRedringserviceagent.
checkforleakageinthesystem.
Oncethefaulthasbeenclearedtheboilerwillturnonagainifthesystemislledandpressurisedtoover0.5
bar.

ItisrecommendedthattheBoilerbeinstalledandservicedregularlybyaREDRINGserviceagenttoensure
continualtrouble-freeoperation.Fordetailsofserviceagentsinyourareapleasecontact:
Glen Dimplex Heating & Ventilation.
Millbrook House
Grange Drive, Hedge End
Southampton SO30 2DF
Telephone Redringtechnicalserviceon0344 879 3588
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Redring PSA12 Powerstream Ascari 12kW User manual

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