Biasi 200DI Installation And Maintenance Instructions Manual

Type
Installation And Maintenance Instructions Manual
UnventedHotWaterCylinders
InstallationandMaintenanceInstructions
IMPORTANTNOTETOTHEINSTALLER
Read these installation and maintenance instructions before commencing. Unvented cylinders are a controlled service as
definedinthelatesteditionofthebuildingregulationsandshouldonlybefittedbyacompetentperson.
Therelevantregulationsare:EnglandandWalesBuildingRegulationG3;ScotlandTechnicalStandardP3;NorthIrelandBuildingRegulationP5.
Afterinstallationtheinstallermustlefttheinstructionsmanualwiththehouseholder.
unventedhotwatercylinders
installationandmaintenanceinstructions
Page2/20
PREINSTALLATIONSTORAGE
Storetheunitstandinguprightinitsoriginalpackaginginanareafreefromexcessivedamp.
FEATURESOFTHEUNVENTEDCYLINDER:
‐MadefromDuplexStainlessSteelforexcellentcorrosionresistance
‐Strongrustproofedsteelcase
‐Highlyinsulatedwithenvironmentallyfriendlyfoam
‐Availableinrangeofsizestosuit‐125L,150L,170L,200L,250Land300litres
‐AllmodelsincludingSolarmodelsareavailableinDirectorIndirectversions
‐Supplied
completewithallthenecessarysafetyandcontroldevicesneededtoconnectcoldwatermains
‐Allsafetyandcontroldevicesarepreadjusted
‐ High qualitycontrolsselectedthatcombinehighflowrate performancewithminimumpressuredropwhichgives
fantasticperformanceinallareas,withgreatimprovementsinareas
withpoorwaterpressure
‐KIWAapprovedforcompliancewiththeWaterSupply(WaterFittings)Regulations1999andBuildingRegulationsG3
&L.
COMESCOMPLETEWITHALLTHEFITTINGSYOUNEEDTOCOMPLETE THEINSTALLATION:
ACCESSORIES DIRECT INDIRECT SOLARDIRECT SOLARINDIRECT
ExpansionVessel
3 3 3 3
Wallmountingkitforexpansionvessel
3 3 3 3
Expansionvesselhose
3 3 3 3
Tundish
3 3 3 3
10wayelectricalbox
2 3 3 3
Highowrateinletcontrolset
3 3 3 3
Twoportvalve
2 3 3 3
Immersionheater
3 3 3 3
Temp&Pressurereliefvalve
3 3 3 3
Dualthermostat
2 3 2 3
Highlimitstat
2 2 3 3
Installation&MaintenanceInstructions
3 3 3 3
Storagecapacity
125L 150L 170L 200L 250L 300L
Operatingpressure 5,5bar
MaxWatersupplypressure 10bar
MaxPrimaryworkingpressure 3bar
Pressurereducingvalve 3bar
Immersionheater 3kW/240V,1¾’’,16’’LONG
Expansionvesselchargepressure 3bar
unventedhotwatercylinders
installationandmaintenanceinstructions
Page3/20
SITINGTHEUNIT
Thisunitcansupplyoutletsaboveitoratsomedistancefromitbutanyoutletsabovetheunitwillreducetheavailableoutlet
pressureby0.1barforevery1mof heightdifference.Themaximumlengthofthe“deadleg”shouldbeasstatedintheWater
Supply(WaterFittings)
Regulations1999G18.7,inparticulartotheareaofmostfrequentuse.
Particular attention is needed if sitting in a garage or outbuilding as the unit should be protected from frost. All exposed
pipework must be insulated. The unit must be installed UPRIGHT on a flat base capable of supporting
its weight when full
(pleaseseethetechnicalspecicationsectionforweights).Theminimumrecommendedcupboardsizeis650mmsquare.
Sufficient access to allow maintenance of the valves should be considered. In addition the immersion heaters are 400mm in
length and this distance should be considered to allow withdrawal
for servicing if required. The discharge pipework from the
safetyvalvesshouldfallcontinuouslyandterminatesafely.
SCHEMATICDIAGRAM
WATERSUPPLY
The performance of any unvented system is only as good as the mains water supply available. To this effect the maximum
possible water demand should be assessed, with the knowledge that the mains supplies both hot and cold services
simultaneously.
Thewaterheateritselfoperatesatapressureof3
bar,controlledbytheinletcontrolset,andiscapableofdeliveringover50
litresperminute.Thehighqualityinletcontrolsethasbeendesignedtomakethemostoftheflowratesavailable.
Thewatersupply shouldbecheckedtoensure itcanmeet theserequirements.Ifnecessary,
consultthelocalwaterauthority
regardingthelikelypressureandflowrateavailability.
Consideration should be given to upgrading existing ½” (15mm) cold mains pipework to a larger size if the recommended
minimumpressure/flowrateisnotbeingachieved.
Note:Ahighstatic(noflow)mainspressureisnoguarantee
ofgoodflowavailability.Inadomesticinstallation1.5barand25
l/min.shouldberegardedastheminimum.Themaximummainspressurethattheinletcontrolsetcancopewithis10bar.
Legend:
1.BronzePump
2.NonReturnValve
3.TwoPortValve
4.Temperature&PressureReliefValve
5.ExpansionReliefValve
6.ExpansionVesselwithwallbracket
7.PressureReducingValve
8.IsolatingValve
9.DrainValve(notsupplied)
Note:
Thepressurereducingvalve,nonreturn
valveandexpansionrelief
valveare
combinedtogetherintheinletcontrolet.
On125170Lsizesthereisnodedicated
secondaryreturnbossandthesecondary
returncircuitshouldbetee’dintothe
coolfeedpipejustabovethedrainelbow.
SECONDARY
FLOW
SECONDARY RETURN CIRCUIT
(200, 250 & 300 LITER SIZES)
PRIMARY
FLOW
DUAL
STAT
PRIMARY
RETURN
1 2
3
4
5
FLEXIBLE HOSE
6
2 7
COLD
MAIN
COLD FEED
BALANCED COLD
CONNECTION
8
9
unventedhotwatercylinders
installationandmaintenanceinstructions
Page4/20
GENERALINSTALLATION
CONNECTINGTOTHECYLINDER
Allofthepipeworkconnectionsonthecylinderare22mmcompressionandsuppliedcompletewithglandnutsandolives,inthe
AccessoryKitbox.Onlyconnect22mmTableXcoppertubetotheseconnections.Cutthetubewithapipecutterandensureno
sharp edges or burrs protrude. Slide both
gland nut and olive onto the tube and push tube fully home into the connection,
ensuring the tube end fully bottoms on the connection recess. Smear the outer wall of the olive with plumbing paste and
tightenglandnutcorrectly.
Uponlling/commissioning,ensureallconnectionsarecompletelywatertight.
Note:Nocontrolorisolationvalveshouldbettedbetweentheexpansionreliefvalveandthestoragecylinder.Thereliefvalve
connectionsshouldnotbeusedforanyotherpurpose.
COLDMAINSPIPEWORK
Runthecoldmainthroughthebuildingtotheplacewhereistobeinstalled.Takecarenottorunthecoldpipenearhotwater
or heating pipeworksothattheheatpickupisminimized.Identifythecoldwatersupplypipeandfitanisolatingvalve(not
supplied).
A22mmBS1010stopcockcan typicallybeused buta22mmquarterturn full borevalvewouldbe betterasitdoes
not restrict the flow as much. Do not use “screwdriver slot” or similar valves. Make the connection to the cold feed of the
cylinder and incorporate a drain
valve. Position the inlet control just ABOVE the Temperature & Pressure Relief Valve (TPRV)
mountedonthesideofthecylinder.This ensures that the cylinder doesnothave to bedraineddown in ordertoservicethe
inlet control set. Ensure that the arrow points in the direction of the
water flow. Select a suitable position for the expansion
vessel.Mountittothewallusingthebracketprovided.Usetheflexiblehoseprovidedtoconnecttotheinletcontrolgroup.
BALANCEDCOLDCONNECTION
Iftherearetobeshowers,bidetsormonobloctapsintheinstallationthenabalancedcoldsupplyisnecessary.Thereisa22mm
balancedconnectionontheinletcontrolset.
HOTWATERPIPEWORK
Runtherstpartofthehotwaterdistributionpipeworkin22mm.Thiscanbereducedto15mmand10mmasappropriatefor
thetypeoftapetc.Youraimshouldbetoreducethevolumeofthehotdrawoffpipeworktoapracticalminimumsothatthe
time
takenforthehotwaterisasquickaspossible.Donotusemonoblocmixertaporshowersifthebalancedcoldconnection
is not provided. Outlets of this type can back pressurize the unit and result in discharge. Select a suitable position for the
expansion vessel. Mount it to the
wall using the bracket provided and connect to the inlet control set with the flexible hose
provided.Ensurethatthetopofthevesselisaccessibleforservicing.
PRIMARYCOILCONNECTIONS
Connect the primary connections (Indirect only) using the compression connections provided. The primary circuit must be
positivelypumped.Gravitycirculationisnotsuitable.Eitherprimaryconnectionmaybeusedastheprimaryflow.Reheattimes
areidenticaleitherway.Theprimarycircuitcanbeopenventedorsealed,withupto
amaximumpressureof3.5bar.Ifyouseal
theprimarycircuitanadditionalexpansionvesselandsafetyvalveisrequired.TheboilermaybeGas,ElectricorOilbutmustbe
undereffectivethermostaticcontrol.UncontrolledheatsourcessuchassomeAGA’s,backboilers,solidfuelstoves,etc.are
NOT
SUITABLE. Please contact our Technical department for guidance. Connect the two port zone valve (indirect only) into the
primaryflowpipework.Thedirectionofflowarrowshouldbetowardstheprimaryflowconnection.Ontwincoilsolarcylinders
wehaveprovidedanextrathermostatbossshouldyouwishtouse
it.Againatwoportzonevalveshouldbetted(supplied).
SECONDARYCIRCULATION
Canbeusedwithsecondarycirculation.AnappropriateWRASapprovedbronzecirculatorshouldbeusedinconjunctionwitha
nonreturn valve to prevent backflow. On large secondary circulation systems it may be necessary to incorporate an extra
expansionvesselinto thecircuittoaccommodatetheincreasedsystemwatervolume.Secondary
circulationshouldbeavoided
onDirectelectricallyheatedunitsbeingusedonoffpeakelectricitytariffs.
Asecondaryreturnbossisttedasstandardon200L,250Land300Lunits.Onsmallersizes,teeintothecoldfeedpipeabove
thedrain.
IMMERSIONHEATERS
Only immersion heaters with a thermal cutout may be used. To help ensure this, the immersion heaters have a special 1¾”
thread.Theyare ratedat3 kWat240Vandare ofalow noiseIncoloyconstruction.Theyhave bothathermostatandahigh
limit cutout. Please order
the correct replacement from BIASI; fitting nonapproved immersions may affect your guarantee.
Whenfitting,ensure the‘O’ringispositionedcorrectlyontheheadoftheimmersionheaterandlubricatebeforefitting.Fitit
byhanduntilalmost homethentightengently asthe‘O’ringswillseal easily.
Theelectricalsupplytoeachimmersion heater
must be fused at 13A via a double pole isolating switch to BS 3456. The cable must be 2.5mm
2
heat resistant (85°C HOFR)
sheathedflexcomplyingtoBS6141:1981Table8.Donotoperatetheimmersionheater/suntiltheunitisfullofwater.Donot
operatetheimmersionheater/sifanysterilisationliquidisinthecylinderasthiswillcauseprematurefailure.Fittheimmersion
thermostat(indirect
unitsonly)intothethermostatpocket.Completethewiringusetheappropriatewiringdiagrams.
unventedhotwatercylinders
installationandmaintenanceinstructions
Page5/20
DISCHARGEARRANGEMENT
Note:Itisnotacceptabletodischargestraightintoasoilpipe
Note:Thedischargewillconsistofscaldingwaterandsteam.Asphalt,roofingfeltandnonmetallicrainwatergoodsmaybedamagedbysuch
discharges.
Theinletcontrolgroup should bepositionedsothatthedischarge from bothsafetyvalvescan be combined viaa15mmend
feedTee,asinthediagramabove.
Connect the tundish and route the discharge pipe which must be routed in accordance with Building regulation‐Part G3 of
schedule1.

Whenoperatingnormallywaterwillnotbedischarged.Waterdischargefromthetwosafetyvalveswillonlyoccurunderfault
conditions.
Thetundishshouldbe vertical, locatedinthesamespace astheunvented hotwaterstoragesystemand bettedas closeas
possible,within500mmofthesafety
devicee.g.thetemperaturereliefvalve.
Thepositionofthetundishmustbethatwheninstalleditisvisibletotheoccupantsofthepremises.
When positioning the tundish, the drain valves and motorised valve ensure that these items are positioned away from any
electricaldevices.
The discharge pipe (D2)
coming from the tundish should terminate in a safe place where there is no risk to persons in the
vicinityofthedischarge,beofmetaland:
A) Be at least one pipe size larger than the nominal outlet size of the safety device unless its total equivalent hydraulic
resistance
exceeds that of a straight pipe 9m long, i.e. discharge pipes between 9m and 18m equivalent resistance
length should be at least two sizes larger than the nominal outlet size of the safety device, between 18 and 27m at
least3sizeslarger,andsoon.Bendsmustbetakeninto
accountincalculatingtheflowresistance.Refertodiagram1,
Table 1 and the worked example. An alternative approach for sizing discharge pipes would be to follow BS6700
Specication for design, installation, testing and maintenance of services supplying water for domestic use within
buildingsandtheircurtilages.
B) Have
averticalsectionofpipeatleast300mmlong,belowthetundishbeforeanyelbowsorbendsinthepipework.
C) Beinstalledwithacontinuousfall.
D) Itis preferable for the discharge to be visible at both the tundish and the final point of discharge. Where this is not
possibleorpracticallydifficult,thereshouldbeclearvisibilityatoneorotheroftheselocations.
Examplesofacceptabledischargearrangementsare:
1.Ideallybelowthexedgratingandabovethewatersealinatrappedgulley.
2. Downward discharges at a low level; i.e. up to 100mm above external surfaces such as car parks, hard standings, grassed areas etc. are
acceptableprovidingthatwherechildren playorotherwise comeintocontact withdischarges,awirecageorsimilarguardispositionedto
preventcontactwhilstmaintainingvisibility.
3.Dischargesatahighlevel;e.g.intometalhopperandmetaldownpipewiththeendofthedischargepipeclearlyvisible(tundishvisibleor
unventedhotwatercylinders
installationandmaintenanceinstructions
Page6/20
not) or onto a roof capable of withstanding high temperature discharges of water and 3m from any plastic guttering systems that would
collectsuchdischarges(tundishavailable).
4. Where a single pipe serves a number of discharges, such as in blocks of flats, the number served should be limited to not more than 6
systemssothatanyinstallationcanbetracedreasonablyeasily.Thesinglecommondischargepipeshouldbeatleastonepipesizelargerthan
the largest individual discharge pipe to be connected. If unvented hot water storage systems are installed where discharges from safety
devicesmaynot
beapparent,i.e.indwellingsoccupiedbyblind,infirmordisabledpeople,considerationshouldbegiventotheinstallationof
anelectronicallyoperateddevicetowarnwhendischargetakesplace.

WORKEDEXAMPLE
The example below is for G1/2 temperature relief valve with a discharge pipe (D2) having 4 No. elbows and length of 7m from the tundish to the point of
discharge.
FromTable1:
Maximumresistanceallowedforastraightlengthof22mmcopperdischargepipe(D2)fromaG1/2
temperaturereliefvalveis:9.0m.Subtracttheresistancefor
4 No. 22mm elbows at 0.8m each = 3.2m. Therefore the maximum permitted length equates to: 5.8m. 5.8m is less than the actual length of7m,therefore
calculatethenextlargestsize.
Maximumresistanceallowedforastraightlengthof28mm
pipe(D2)froma G1/2temperaturereliefvalveequatesto:14m.Astheactuallengthis7m,a28mm
(D2)copperpipewillbesatisfactory.
Table1‐Sizingofcopperdischargepipe(D2)foratemperaturereliefvalvewithaG1/2outletsize(assupplied).
Sizeofdischarge
pipework
Maximumlengthof
straightpipe(nobendsorelbows)
Deductthefigurebelowfromthemaximumlength
foreachbendorelbowinthedischargepipe
22mm Upto9m 0.8m
28mm Upto18m 1m
35mm Upto27m 1.4m
unventedhotwatercylinders
installationandmaintenanceinstructions
Page7/20
TYPICALWIRINGDIAGRAMS
These diagrams relate only to the components listed. Others may vary in their wiring requirements, particularly thermostats.
Alwaysrefertomanufacturers’instructionswhichmayoverridethedetailinordertofunctioncorrectly.
WIRINGDIAGRAM2xTWOPORTZONEVALVES(S
PLAN)VARIANTDUALTHERMOSTATWIRING
WIRINGDIAGRAMTHREEPORTMIDPOSITION
VALVE(YPLAN)+TWOPORTVALVEVARIANT
DUALTHERMOSTATWIRING
COMMISSIONING
FILLING
Firstyoumustensurethatthepressureintheexpansionvesselisthesameasthesettingofthepressurereducingvalvei.e.3
bar(45PSI).ThevalveisoftheSchradercartyretype.Checkalltheconnectionsforwatertightnessincludinganyfactorymade
connections such as the immersion
heater and the temperature and pressure relief valve. Prior to lling, open the hot tap
furthestawayfromtheBIASISILVERtoexpelair.Openthecoldmainisolationvalveandallowtheunittofill.
Oncethecylinderas beenfullycommissionedshould beheatedto itsnormaloperating
temperature.Draw offsecondaryhot
watertoeachoutletandallowhotwatertoflowfromeachoutletforatleast30secondstoremoveanyfluxresiduefromthe
pipeworkwithinthesecondaryhotwater system. Then fully drainthecylinderandrefilledtoensurethatall
fluxresiduesis
removedfromthesystem.
DIRECTUNITS
Afterbothllingwithwaterandpurgingofsterilisationliquid,switchonthepowertotheimmersionheatersandallowtheunit
tostarttoheat.Theimmersionheaterissuppliedpresetat55°C.Turningfullyto+setstoapprox65°C.
INDIRECTUNITS
Filltheprimarycircuitaccordingtotheboilermanufacturers’commissioninginstructions.Ensuretheleveronthetwoportvalve
issetto thellingposition. Whenfull,move theleverback.Switch theprogrammertoDomesticHotWater(DHW)andallow
theunittostarttoheat.Adjustthedial
ofthedualthermostattobetween30°Cand70°Casrequired.
STORAGETEMPERATURE
6065°C is the recommended storage temperature for both direct and indirect cylinders. In hard water areas consideration
shouldbegiventoreducingthisto5055°C.InmanyhealthcareapplicationstheguidanceonLegionellacontrolandsafewater
deliverytemperatureswillrequirestoringthewaterat6065°C,distributingat
50‐55°Candusingthermostaticmixingvalvesto
controlthefinaltemperature.FordetailsconsulttheNHSEstatesGuidanceonsafehotwatertemperatures.
GBrBlO 1 2 4 GBrBl O
HP22
Zone Valve (Htg)
Room Stat
RMT 230
HP22
Zone Valve (Dhw)
1 2
3
4
5 6
7
8 9 10
4
3
LNE
Htg
on
Dhw
on
LNE
LNE
L
NE
1
C
IDT
Dual Stat
Control
2C
Unit
High Limit
Stat
Power
Supply
E
N
L
12 212
Junction Box
1 2 3 2 3
2
3
FP75 or CP15 Programmer
Basic Boiler
Pump
C21 WGOBI
Cylinder Stat
ITD Dual Stat HP22
Mid Position Valve
1 2 3 4 5 6 7 8 9 10
4
3
LNE
Htg
on
Dhw
on
LNE
LNE
L
NE
C2
IDT Dual Stat
Power
Supply
E
N
L
23
Junction Box
1 2 3 2 3
2
3
FP75 or CP15 Programmer
Basic Boiler
Pump
124
Room Stat
RMT 230
2
G/Y
LN
NOT
USED
1
Dhw
off
BR BL G O
21
HP22
High Limit Stat
unventedhotwatercylinders
installationandmaintenanceinstructions
Page8/20
SAFETYVALVECHECKS
Any sign of water coming from either the expansion relief valve or the temperature/pressure relief valve during heatup
indicatesaproblem. Nextholdbothofthesesafetyvalves fullyopen,allowing asmuchwateraspossibletoflow through the
tundish.Checkthatyourdischargepipeworkisfreefromdebris
and iscarryingthewaterawaytowasteefficiently.Releasethe
valvesandcheckthattheyreseatproperly.
SERVICING
GENERAL
ServicingshouldonlybecarriedoutbycompetentinstallersandanysparepartsusedmustbepurchasedfromBIASICylinders.
NEVERbypassanysafetydevicesoroperatetheunitwithoutthembeingfullyoperational.

DRAINING
Switchtheelectricalpoweroff(importanttoavoiddamagetoelement).Isolateboilerfromtheunit.Turnoffthecoldwater
supplyvalve.Openhotwatertap.Openthedrainvalve.Theunitwilldrain.
WARNING:WATERDRAINEDOFFMAYBEVERYHOT!
ANNUALMAINTENANCE
Thewaterheaters requireannualservicinginorder toensuresafeworkingand optimum performance.It is essential that the
following checks are performed by a competent installer on an annual basis. This is commonly done at the same time as the
annualboilerservice.
1)Twistthecapofthe
expansionreliefvalveontheinletcontrolsetandallowwatertoflowfor5seconds.Releaseand
make sure it resets correctly. Repeat with the pressure / temperature relief valve. In both cases check that the
dischargepipeworkiscarryingthewaterawayadequately.Ifnot,checkforblockages
etc.andclear.
WARNING:THEWATERDISCHARGEDMAYBEVERYHOT!
2) Check that any immersion heaters tted are working correctly and that they are controlling the water at a
temperaturebetween55°Cand65°C.
3)Checkthepressureintheexpansionvesselischargedto3bar.Turnoffthewatersupplytotheunitandopenahot
tap
rst.TheairvalveonexpansionvesselisaSchrader(cartyre)type.AirorCO2maybeusedtochargetheexpansion
vessel.
4)Unscrewtheheadontheinletcontrolsetandcleanthemeshfilterwithin.
5)TheBenchmarkLogBooksuppliedwiththisunitshouldbe
updatedateachservice.
YOURGUARANTEEMAYBEVOIDWITHOUTPROOFOFANNUALSERVICING
SPAREPARTS
Afullrangeofsparepartsisavailable.
unventedhotwatercylinders
installationandmaintenanceinstructions
Page9/20
FAULT POSSIBLECAUSE SOLUTION
Waterescapingfromthecaseunit
Compressionfittingonhotdrawoffnotsealing Check/remakejointsealingpaste
Coldwaterathottaps
Directimmersionheaternotswitchedonorcutout
hastriggered
Check/reset
Indirectboilernotworking
Checkboilerconsultboilermanufactures’
instructions
Indirectmotorizedvalvefault Checkplumbing/wiringmotorizedvalve
Indirectcutoutindualstathasoperated Resetandinvestigatecause
Waterdischargesfromexpansion
reliefvalve
Ifcontinualpressurereducingvalve(partofinlet
controlset)maynotbeoperatingcorrectly
Checkoutletpressurefrominletcontrolsetis3bar
Ifcontinualexpansionreliefvalveseatmaybe
damaged
Removecartridgecheckseatandrenewifnecessary
Ifintermittentexpansionvesselchargemayhave
reduced/bladderperished
Checkpressureinexpansionvessel.Rechargeto3bar
ifnecessary.Ifbladderperishedreplacevessel
Unititbeingbackpressurized
Withcylindercoldcheckpressureincylinder.Ifthisis
thesameastheincomingmainspressurethenyouare
gettingbackfeed.Installabalancedcoldsupply
Waterdischargesfromtemperature
&pressurereliefvalve
Unithasoverheatedthermalcontrolshavefailed
Switchedoffpowertoboilerandimmersionheaters.
Leavewatersupplyon.Waituntildischargesstops.
Isolatewatersupplyandreplaceiffaulty.
Milky/cloudywater
Oxygenatedwater
Waterfromanypressurizedsystemwillreleaseoxygen
bubbleswhenflowing.Thebubbleswillsettleout.
Nohotwaterflow
Coldmainoff Checkandopenstopcock
Stainerblockedinpressurereducingvalve Isolatewatersupplyandclean
Inletcontrolsetmaybefittedincorrectly Checkandrefitrequired
Noiseduringhotwaterdrawoff
typicallyworseinthemorning
Looseairingcupboardpipework Installextraclips
Hotorwarmwaterfromcoldtap
Iftaprunscoldafteraminuteorsothepipeispicking
upheatfromheatingpipework
Insulate/reroute
GUARANTEE
The stainless steel vessel carries a fully EXCLUSIONS THE GUARANTEE DOES NOT COVER: transferable 25year guarantee
againstfaultymaterialsormanufactureprovidedthat:
IthasbeencorrectlyinstalledaspertheInstallation.Instructionsandalltherelevantstandards,regulationsandcodes
ofpracticeinforceatthetime.
Ithasnotbeenmodiedinanyway,otherthanbyBIASI.
Ithasnotbeenmisused,tamperedwithorsubjectedtoneglect.
Thesystemisfedfromthepublicmainswatersupply.
Ithasonlybeenusedforthestorageofpotablewater.
Ithasnotbeensubjectedtofrostdamage.
Theunithasbeenservicedannually.
TheBenchmarkLogBookhasbeenlledinaftereachannualservice.
Theguaranteeperiodstartsfromthedateofpurchaseandnoregistrationisrequired.
Pleasenotethatinvoicesforservicingmayberequestedtoprovethattheunithasbeenservicedannually
Theexpansionvesselandcoldwatercontrolssupplied withBIASImodelscarrya2yearguarantee.Allothercomponentstted
to/orsuppliedwiththeunitcarrya2yearguarantee.
unventedhotwatercylinders
installationandmaintenanceinstructions
Page10/20
EXCLUSIONSTHEGUARANTEEDOESNOTCOVER:
Theeffectsofscalebuildup.
Anylabourchargesassociatedwithreplacingtheunitoritsparts.
Anyconsequentiallossescausedbythefailureormalfunctionoftheunit.
GUIDANCEINTHEEVENTOFAPROBLEM
Ifyouhaveaproblemintherstyear,contacttheplumberwhottedtheunit.Thereaftercontacttheplumberwhocarriesout
theannualservicingforyou.IfyourBIASISilverdevelopsaleakwewillsupplyyouwithanewone.Weaskforanominalupfront
payment
to prevent fraud. We will require the original unit to be returned to us for inspection along with a copy of your
Benchmark Log Book. If it is conrmed that it has failed within the terms of the guarantee your upfront payment will be
refunded.
If a component part
fails within the guarantee period, we will send you a new one without any upfront charge. Credit card
detailsmaybetakentopreventfraud.Weaskyoutopostthefaultypartbacktouswithinonemonthbyrecordeddelivery.
If you do not return the part we will
charge you for it and for the postage and packing.If your part fails after the guarantee
period,wewillaskforupfrontpayment.
USERINSTRUCTIONS
Yourstainlesssystemisautomaticinnormaluseandrequiresonlyannualservicing.Youshouldemployacompetentinstallerto
performtheannualservicing.Normallythisistimedtocoincidewiththeannualboilerservice.
IFWATERISFLOWINGFROMTHESAFETYVALVESTHROUGHTHETUNDISHTHISINDICATESAFAULTCONDITION
ANDACTIONISNEEDED.
Ifthiswaterishot,turntheboilerand/ortheimmersionheateroff.Donotturnoffthewateruntilthedischargerunscool.The
dischargemayalsostop.
CALLOUTACOMPETENTPLUMBERTOSERVICETHEUNIT.
Tellthemyouhaveafaultonanunventedcylinder.Westockallthesparepartstheymayneed.

unventedhotwatercylinders
installationandmaintenanceinstructions
Page11/20
TECHNICALSPECIFICATIONS
DIRECT
Topview
CAPACITY
[L]
A
[mm]
B
[mm]
C
[mm]
D
[mm]
E
[mm]
F
[mm]
WEIGHT
Empty[kg]
WEIGHT
Full[kg]
125 1045 812 647 287 272‐ 30 155
150 1205 972 757 287 272‐ 34 184
170 1325 1092 837 287 272‐ 37 207
200 1505 1272 957 287 272 1042 41 241
250 1825 1592 1167 287 272 1427 49 299
300 2105 1872 1242 287 272 1667 56 356
INDIRECT
Topview
CAPACITY
[L]
A
[mm]
B
[mm]
C
[mm]
D
[mm]
E
[mm]
F
[mm]
G
[mm]
H
[mm]
I
[mm]
WEIGHT
Empty[kg]
WEIGHT
Full[kg]
125 1045 812‐340 272 290 420 615‐ 35 158
150 1205 972‐340 272 290 420 615‐ 39 187
170 1325 1092‐ 327 272 290 490 690‐ 43 210
200 1505 1272 957 327 272 290 490 690 1042 47 244
250 1825 1592 1167 350 272 290 525 760 1427 57 303
300 2105 1872 1242 350 272 290 525 760 1667 64 360
A
E
D
B
F
C
Ø540
3
5
°
3
5
°
4
5
°
4
5
°
A
E
D
B
F
H
G
I
C
Ø540
3
5
°
3
5
°
4
5
°
4
5
°
unventedhotwatercylinders
installationandmaintenanceinstructions
Page12/20
SOLARUNVENTEDDIRECTSINGLECOILCYLINDER
DetailfortheinstallationofaSolarUnventedDirectcylinderinanelectrichome.
GENERAL
Wheninstalling this productit isessential theoverall installationmeets allcurrent legislationincluding, inparticular, thehigh
limitisolationrequirementsofBuildingRegulationG3.Thisdocumentisdesignedtoassistinachievingthataim.
WATER
ThepotablewaterconnectionandtundishdischargeconnectionaretobeconnectedinexactlythemannerdescribedinPages3
to7ofthismanual.
IMMERSIONHEATERS
Thestandardissueimmersionheatersaredesignedfordomesticusagewherethelowerheaterisconnectedtoalowrateoff
peak tariff and the upper heater used for occasional topup purposes. Heaters of this nature are not designed to be
permanentlylive.ForusageoutsideofdomesticparametersTitanium
immersionelementsarerecommended.
SOLARCONNECTIONS
Theflowandreturnfromthesolarheatsourcearetobeconnectedtotheindirectcoil.Eitherprimarycoilconnection(A)may
beutilisedasthefloworreturn.Thesolarsensor,suppliedaspartofthesolarcontrols,insertsintoPocketBandisheldinsitu
withthe
blacksensorpocketretainingbungprovided.Itisnecessarytomountthesolarpumpinthereturnpipeworkwiththe
RWC / ORKLI two port valve (supplied with the cylinder) installed between the cylinder and the pump.This valve is of the
poweredopen,sprungcloseddesignandiswired
throughtheImitITL100highlimitstatwhichinsertsintoPocketF.Twowiring
options for high limit isolation are provided in Fig. 1 and Fig. 2.The superior option is Fig. 2 which disconnects the pump
movementaswellasprovidesvalveclosure(seepages13and14).
SOLARUNVENTEDINDIRECTTWINCOILCYLINDER
With either format it is essential the overall installation meets all current legislation including, in particular, the high limit
isolationrequirementsofBuildingRegulationG3.Thisdocumentisdesignedtoassistinachievingthisaim.
UPPERCOIL
Theuppercoilisconnectedtothefossilfuel(notsolidfossilfuele.g.woodburnerorcoal)boileraspertheinstructionsforthe
UnventedIndirectsinglecoilmodelwiththelimitTLSCcontrolandhighlimitthermost atinsertedintopocketI(lowerdiagram
page14).Thewiringrequirementsare
asdepictedonpage13.
LOWERCOIL:SOLARINSTALLATION
Inasolarpoweredsystemthelowercoilisconnectedtothesolarheatsource.Eitherprimarycoilconnectionmaybeutilisedas
the flow or return. The solar cylinder sensor, supplied as part of the solar controls, inserts into pocket F (see page 14). It is
necessary tomount the
solar pump inthe return pipework with the RWC /ORKLItwo port valve (supplied with the cylinder)
installedbetweenthecylinderandthepump.Thisvalveisofthepoweredopen,sprungcloseddesignandiswiredthroughthe
ImitITL100 high limit stat which inserts into pocketL
(lowerdiagram page14).Two wiring options forhigh limit isolation are
providedinFig.1andFig.2page13.ThelmitITC100controlthermostatisnotrequiredinasolarinstallation.
LOWERCOIL:TWOBOILERINSTALLATION
Where the lower coil is to be used with a fossil fuel (not solid fossil fuel e.g. wood burner or coal) boiler, the pipework
requirementsareas perthatof aIndirectsingle coil cylinder describedearlierinthisbook. Electrically theImit ITC100 inserts
intoPocketF(seepage14)
tocontroltheboilerinputandtheImitITL100limitstatintoPocketL(lowerdiagrampage14).The
RWC/ORKLItwoportvalvemaybeinstalledintoeitherthefloworreturnpipework.WiringoftheITC100andITL100areasper
thewiringdetailusingtheImit
TLSConpage7.

unventedhotwatercylinders
installationandmaintenanceinstructions
Page13/20
TYPICALSCHEMATICWIRINGDIAGRAM:SOLARHIGHLIMIT
CONTROL
Theseschematicwiringdiagrams depict anIMIThighlimit controlstatand the connectionsarenumbered accordingly.Where
analternativeissuppliedconnectaspermanufacturers’instructions.

unventedhotwatercylinders
installationandmaintenanceinstructions
Page14/20
TECHNICALSPECIFICATIONS
SOLARDIRECT
Topview
CAPACITY
[L]
A
[mm]
B
[mm]
C
[mm]
D
[mm]
E
[mm]
F
[mm]
G
[mm]
H
[mm]
I
[mm]
J
[mm]
WEIGHT
Empty[kg]
WEIGHT
Full[kg]
200 1505 1272 957 327 272 290 490 690 1042 1254 47 244
250 1825 1592 1167 350 272 290 525 760 1427 1574 57 303
300 2105 1872 1242 350 272 290 525 760 1667 1854 64 360
SOLARINDIRECT
Topview
CAPACITY
[L]
A
[mm]
B
[mm]
C
[mm]
D
[mm]
E
[mm]
F
[mm]
G
[mm]
H
[mm]
I
[mm]
J
[mm]
K
[mm]
L
[mm]
WEIGHT
Empty
[kg]
WEIGHT
Full
[kg]
200 1505 1272 740 272 290 490 690 790 955 1042 1115 1254 51 246
250 1825 1592 882 272 290 525 760 932 1097 1427 1332 1574 63 306
300 2105 1872 740 272 290 525 760 1072 1237 1667 1472 1854 70 363
A
E
D
B
F
H
G
I
C
J
Ø 540
3
5
°
3
5
°
4
5
°
4
5
°
A
D
B
E
G
F
J
C
L
H
I
K
Ø 540
3
5
°
3
5
°
4
5
°
4
5
°
unventedhotwatercylinders
installationandmaintenanceinstructions
Page15/20
SOLARUNVENTEDCYLINDERS
Solarcylinders have beendesigned specifically with Solar applications in mind.Featuring a purpose designedsolar coil, which
allowsmaximumheattransferofsolarenergyintothestoredwater,thecylindersaresuitableforusewithawiderangeofsolar
systemsnow available inthe UK andIreland andare
anefficientand environmentally friendly wayof providing Domestic Hot
Water.Solarcylindersalsoofferthebenefitofmainspressurehotwaterpowerfulshowersandfastfillingbaths.
Solarcylindersareavailableinarangeofsizesfrom200L,250Land300litresandinDirectorIndirectversions.
Solarcylinders
aremanufacturedfromhighgradeDuplexstainlesssteel.
Solarcylindersaredesignedtoacceptheatinputfromarenewable/sustainable(i.e.Solar)heatsource.Wherethisinputdoes
not fully meet the desired temperature a guaranteed quantity of water can be heated to an acceptable temperature by the
householderstraditionalheatsourceofgas,oilorelectricity.
The Domestic Heating
Compliance Guide document L1A and L1B provides excellent advice in sizing both cylinder designated
solarareas and heat exchangers to the surfacearea of the solar collectors. Using this guide are ableto offer sizing advicefor
specification.
WATERCAPACITIES(LITRES)
Model Capacity Reference
Lowercoil
surfacearea
LowerCoil
rating
Uppercoil
surfacearea
UpperCoil
rating
Heatuptime
Reheattime
Indirect
Direct
125 125DI
‐ ‐ ‐ ‐ 62min 48min
150 150DI ‐ ‐ ‐ ‐ 76min 63min
170 170DI ‐ ‐ ‐ ‐ 96min 75min
200 200DI ‐ ‐ ‐ ‐ 119min 91min
250 250DI ‐ ‐ ‐ ‐ 140min 118min
300 300DI ‐ ‐ ‐ ‐ 166min 141min
Indirect
125 125IN 0,59m² 16kW
‐ ‐ 23min 19min
150 150IN 0,59m² 16kW ‐ ‐ 28min 25min
170 170IN 0,71m² 19kW ‐ ‐ 34min 25min
200 200IN 0,71m² 19kW ‐ ‐ 41min 32min
250 250IN 0,84m² 23kW ‐ ‐ 47min 32min
300 300IN 0,84m² 23kW ‐ ‐ 52min 37min
Solar
Direct
200 200SD 0,71m² 19kW
‐ ‐ 35min 32min
250 250SD 0,84m² 23kW ‐ ‐ 39min 32min
300 300SD 0,84m² 23kW ‐ ‐ 43min 37min
Solar
Indirect
200 200SI 0,71m² 19kW 0,59m² 16kW 33min 32min
250 250SI 0,84m² 23kW 0,71m² 19kW 35min 32min
300 300SI 0,84m² 23kW 0,71m² 19kW 39min 37min
unventedhotwatercylinders
installationandmaintenanceinstructions
Page16/20
SPECIFICATIONSUMMARY
MATERIALS
‐Innershell‐DuplexStainlessSteel
‐Coil‐StainlessSteelAISI316L
‐Bosses‐StainlessSteel
‐Everycylinderiswatertestedtoapressureof10bar.
INSULATION
‐Fireretardantpolyurethanefoam,nominalthickness4550mm.
‐ThefoamisCFCFreeandHCFCFree.
‐ThefoamhasanOzone
DepletionPotentialofZeroandaGlobalWarming
CASEWORK
‐Electrostaticallypaintedsteel
ANODE
‐Nonetted/nonerequired
EXPANSIONVESSEL
‐
CONTROLSETTINGS
‐PressureReducingValve‐3Bar
‐ExpansionReliefValve‐6Bar
‐PressureandTemperatureReliefValve‐7Bar/90°C
‐HighLimitThermostatinDualThermostat
‐HighLimitThermostatinImmersionHeater
IMMERSIONHEATER
‐1¾”BSPParallelThreadedHead
‐LongLifeIncoloySheathedLowNoiseElement16”
‐LongLongLifeIncoloySheathedThermostatPocket
‐BrazedConstruction
‐CombinedThermostatandSafetyCutout
‐ElementRating3kWat240VA/C

M
A
A
NUFACTUR
E
instal
E
D b
y
w
w
unve
n
lationand
m
w
w.videira.pt
n
tedhotw
m
aintenanc
e
a
tercylinder
s
e
instruction
s
s

s
Page
1
1
7/20
instal
unve
n
lationand
m
n
tedhotw
m
aintenanc
e
a
tercylinder
s
e
instruction
s
s

s
Page
1
1
8/20
unventedhotwatercylinders
installationandmaintenanceinstructions
Page19/20
NOTES
BiasiUKLtd
CommercialRoad
LeamoreEnterprisePark
Walsall
WS27NQ
Telephonenumber:01922714600
Faxnumber:01922714626
Companywebsite:www.biasi.co.uk
  • Page 1 1
  • Page 2 2
  • Page 3 3
  • Page 4 4
  • Page 5 5
  • Page 6 6
  • Page 7 7
  • Page 8 8
  • Page 9 9
  • Page 10 10
  • Page 11 11
  • Page 12 12
  • Page 13 13
  • Page 14 14
  • Page 15 15
  • Page 16 16
  • Page 17 17
  • Page 18 18
  • Page 19 19
  • Page 20 20

Biasi 200DI Installation And Maintenance Instructions Manual

Type
Installation And Maintenance Instructions Manual

Ask a question and I''ll find the answer in the document

Finding information in a document is now easier with AI