1
EOLO Star 24 3 EWall-mounted instant boiler
1 FEATURES
Wall-hung boiler for central heating and the instantaneous production of DHW, with sealed chamber and fan-assisted (type C12 / C32 / C42 / C52 / C82 appliance) with nominal heat output of 23.8 kW (20.485 kcal/h), high-efficiency and fan-assisted circulation.The boiler is made up of:• stainlesssteelintakeairmultigasburnerwith11ramps,complete
with ignition electrode and ionisation detection electrode, double shutter electric gas valve with incorporated modulation coil;
• high-efficiency bithermal rapid type gas/water heat exchanger,realised in copper and made up from pipes inserted into a lamellar battery protected by an anti-corrosive alloy;
• combustionchamberinstainlesssteelsheetinternallyisolatedusingceramic panels;
• stainlesssteelsealedchamberwithfanforfixed-speedflueevacua-tion,pressureswitchfortheverificationofcorrectfanfunctioningandoftheflueexhaust/airintakecircuit;
• hydraulicunitmadeupfromwatercollector,DHWcircuitflowswitch, system side absolute pressure switch, circulation pump, automaticby-pass,systemfillingvalve,systemdrainfitting;
• 6litrediaphragmexpansionvesselwith1.0barfactory-setpressure,system safety valve at 3 bar and manometer;
• over-temperaturesafetythermostat;• electronicignitionwithionisationcontrol;• centralheatingsystemtemperatureadjustmentbuttons(+and-),DHWtemperatureadjustmentbuttons(+and-),mainbuttonwith (Stand-by, Summer, Winter) function, Reset button;
• controlpanelwithmicroprocessorP.C.B.with2sensorcontinuousflamemodulation(DHWandcentralheating)withmodulationfieldfrom23.8to11.5kW(6.8kWinDHWmode);
• settingandadjustmentoffunctioningparametersoftheboilerusingthe keys;
• self-diagnosissystemwithdigitaldisplayofthetemperature,status
and functioning mode and error codes;• ignitiondelaydeviceincentralheatingphase,anti-freezeprotec-
tion system (to -5°C), pump anti-blocking function, DHW post-circulation function, post-ventilation function, chimney sweep function, DHW anti-leak function, pump functioning mode selection, preparation for functioning with solar kit;
• preparationforconnectiontotheDigitalRemoteControl,withroom timer-thermostat or wireless radio timer-thermostat;
• IPX5Delectricinsulationrating;• possibility of recessing theboiler in thewall using a galvanised
universal support frame (optional) complete with front panel;• connection group (optional): a connection group is available for
wall-hung installation and a front and rear connection group for recess installation;
• polyphosphatedispenserkit(optional),recommendedinthepre-sence of water whose features can give rise to scale deposits.
Supplied complete with sample points for combustion analysis.
CategoryIIapplianceII2H3+,functionswithanaturalgasandL.P.G.CE Marking.is available in the model:•EOLOStar243E cod.3.019480•Recessframe(OmniContainer) cod.3.016991
EOLO Star 24 3 E is the wall-hung, sealed chamber fan-assisted boilerthatImmergashasdesignedexpresslyforapplicationsinnew buildings, thanks to its noteworthy construction simplicity and particularly small overall dimensions (only 24 cm depth), which allow its installation inside kitchen cabinets and in limited spaces generally. The boiler offers three installation possibili-ties:indoor,outdoor(inpartiallyprotectedplace)orrecessed(usinganoptionaldedicatedrecessframe).Ithasabithermalrapidheatexchanger,whichallowstoquicklytaketheDHWtotemperature at the time of withdrawal, thanks to its direct heating andalsoguaranteeslargeproduction.EOLOStar243Eisequip-pedwithanelectronicP.C.B.withmicroprocessorandcontrolpanel,completewithdisplay,buttonsforadjustmentandsettingthe boiler's main parameters. Theboileralsodistinguishesitselfduetothepossibilityofcoupling,bythemeansofjusttwowires,tothenewDigitalRemoteControl(optional),whichallowsremotecontroloftheboilercontrols and integrates a flowtemperaturemodulationfunctionandboilerself-diagnosticsamongtheothers.TheappliancehasIPX5Delectricinsulationrating:thismeansthattheboilerisprotectedagainstjetsofwaterand high humidity levels.
2
EOLO Star 24 3 E
2 MAINCOMPONENTS
KEY: 1 - Sample points (air A) - (fumes F) 2 - Sealed chamber 3 - Fan 4 - Combustion chamber 5 - Domestichotwaterflowswitch 6 - Gasvalve 7 - Domestic hot water probe 8 - Systemfillingvalve 9 - Positivesignalpressurepoint 10 - Negative signal pressure point 11 - Flue pressure switch 12 - Safety thermostat
13 - Flow probe 14 - Systemexpansionvessel 15 - Air vent valve 16 - Boilercirculatingpump 17 - System pressure switch 18 - Collector 19 - 3 bar safety valve 20 - System draining valve 21 - Flue hood 22 - Rapidheatexchanger 23 - Ignitionanddetectionelectrodes 24 - Burner
Wallheight-90°gascockaxis=110mm
3
EOLO Star 24 3 E
3 MAINDIMENSIONS
3.1 ATTACHMENTS
Model
EOLO Star 24 3 E
Heightmm
756
Width mm
440
Depthmm
240
Øintake/exhaustmm
100/60
A
Model
EOLO Star 24 3 E
FlowM
3/4"
ReturnR
3/4"
HotOutputAC
1/2"
ColdInputAF
1/2"
GasG
3/4"
ExpansionvesselLitres
6(real4,2)
Casing upper line
B B
A =intake/exhaustB = intake
Distance between casing upper line andØ60/100concentricbendaxis:93mm
Distance between casing upper line andseparatorbendaxisØ80/80:A=133mm;B=115mm
N.B.:Connectiongroup(OPTIONAL)
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EOLO Star 24 3 E
4 MAINDIMENSIONSWITHOMNICONTAINERKIT(OPTIONAL)code3.016991
4.1 CONNECTIONSWITHRECESSKIT(OPTIONAL)
Model
EOLO Star 24 3 Ewhit Omni Container kit
Heightmm
1190
Width mm
566
Depthmm
254
Øintake/exhaust
100/60
A
Model
EOLO Star 24 3 Ewhit Omni Container kit
FlowM
3/4"
ReturnR
3/4"
HotOutputAC
1/2"
ColdInputAF
1/2"
GasG
1/2"
ExpansionvesselLitres
6(reale4,2)
Casing upper line
B B
A =intake/exhaustB = intake
Distance between casing upper line andØ60/100concentricbendaxis:93mm
Distance between casing upper line andseparatorbendaxisØ80/80:A=133mm;B=115mm
N.B.:Connectiongroup(OPTIONAL)
VCRD
5
EOLO Star 24 3 E
6 PUMPHEADFLOWRATEGRAPHICS
"EOLO Star 24 3 E" boilers are supplied with built in circu-lation pump.Thecirculationpumpisalreadyfittedwithacapacitor.
A
Head(kPa)
Head(m
H2O
)
Flowratel/h
A = Total head available to the system.
GRUNDFOSUPS15-50AOHB
5 EOLOStar243EINSTALLATIONCONFIGURATION
The EOLO Star 24 3 E boiler can be installed inside homes, outside homes (in a partially protected place) or recessed (using an optional dedicated recess frame).By varying the type of installation the classification of theboiler also varies.
OUTDOOR INSTALLATION (in partially protectedplace):AppliancetypeB22 - if installed using a mandatory relevant topcoverkit(optional),andtheexhaustterminal,byremovingthe two lateral caps present on the sealed chamber, in this case air intake takes place directly from the outside.AppliancetypeC12/C32 -ifinstalledusingtheverticalorhorizon-tal concentric kits, without the obligation to use the top cover kit (recommended but not mandatory), keeping the two lateral caps present on the sealed chamber.
INDOORINSTALLATION:Appliance typeC12/C32/C42/C52/C82 - if installed using the vertical or horizontal concentric kits or theØ 80/80separator kit.AppliancetypeB22 - if installed using a mandatory relevant topcoverkit(optional),andtheflueexhaust,byremovingthetwo lateral caps present on the sealed chamber, in this case air intake takes place directly from the environment.
OUTDORRECESSEDINSTALLATION:AppliancetypeB22 - if installed using relative spacers to be mounted under the two lateral caps present on the sealed chamber, in this case the air intake takes place directly from the outside.AppliancetypeC12/C32 -ifinstalledtheverticalorhorizontalconcentric kits, keeping the two lateral caps on the sealed chamber without the use of spacers.
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EOLO Star 24 3 E
7 WIRINGDIAGRAM
ROOMTHERMOSTATANDDIGITALREMOTECON-TROL. The boiler is already prepared for application of a room ther-mostat (S20), an On/Off room timer-thermostat, a program
timer or a Digital Remote Control (DRC) to connect onto clamps40and41eliminatingjumperX40.
KEY: B1 - Flowprobe B2 - Domestichotwaterprobe CRD - Digital Remote Control (optional) DS1 - Display E3 - Ignitionanddetectionelectrodes E4 - Safety thermostat F1 - Phasefuse F2 - Neutral fuse M1 - Boilercirculatingpump M20 - Fan S2 - Selector switch functioning S3 - Reset block key S4 - Domestichotwaterflowswitch S5 - System pressure switch S6 - Fluepressureswitch
S20 - Room thermostat (optional) S21 - Domestic hot water temperature increase
key S22 - Domestic hot water temperature decrease
key S23 - Heating temperature increase key S24 - Heating temperature decrease key T1 - Ignitiontransformer T2 - Boilercardtransformer U1 - Rectifierinsidethegasvalveconnector(pre-
sent only on Honeywell gas valves) X40 - Roomthermostatjumper Y1 - Gasvalve Y2 - Gasvalvemodulator
Blue
Brow
n Blue
Brow
n
Blac
kBl
ack
Blac
kBl
ack
Red
Red
Gre
yG
rey
Gre
yG
rey
Whi
teW
hite
Whi
teW
hite
Brow
nBl
ue
Blue
Brow
n
Yello
w/G
reen
THE X6 CONNECTOR IS USED FOR
AUTOMATIC TEST
NB: THE USER INTERFACEIS FOUND ON THE SIDE WELDINGS OF THE ELECTRONICBOARD OF BOILER
USER INTERFACE
230 vac power supply
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EOLO Star 24 3 E
8 HYDRAULICDIAGRAM
KEY: 1 - Domestic hot water probe 2 - Domestichotwaterflowswitch 3 - Gasvalve 4 - Flow limiter 5 - System draining valve 6 - Burner 7 - Rapidheatexchanger 8 - Fan 9 - Sealed chamber 10 - Flue pressure switch 11 - Flue hood
12 - Systemexpansionvessel 13 - Flow probe 14 - Safety thermostat 15 - Air vent valve 16 - Boilercirculatingpump 17 - System pressure switch 18 - Adjustableby-pass 19 - 3 bar safety valve 20 - Systemfillingvalve
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EOLO Star 24 3 E
9 TECHNICALDATA
Maximumnominalheatinput kW(kcal/h) 25.5(21,914)
Maximumusefulheatoutput kW(kcal/h) 23.8(20,468)
Central heating minimum nominal heat input kW (kcal/h) 12.7 (10,922)
Domestichotwaterminimumnominalheatinput kW(kcal/h) 7.6(6,536)
Central heating minimum nominal heat output kW (kcal/h) 11.5 (9,890)
Domestichotwaterminimumnominalheatoutput kW(kcal/h) 6.8(5,848)
Efficiencyat100%Pn % 93.4
Efficiency at 30% of the load % 90.2
Centralheatingcircuit
Adjustablecentralheatingtemperature °C 35-80
Systemmaximumworkingtemperature °C 90
Systemmaximumworkingpressure bar 3
Systemexpansionvesselnominal/(real)capacity litres 6/(4.2)
Systemexpansionvesselfactory-setpressure bar 1.0
Totalheadavailablewith1000l/hflowrate kPa(mH2O) 30.8 (3.1)
DomesticHotWatercircuit
Hotwaterproductionusefulheatoutput kW(kcal/h) 23.8(20.468)
D.H.W.adjustabletemperaturerange °C 35-55
D.H.W. circuit minimum dynamic pressure bar 0.3
D.H.W.circuitmaximumworkingpressure bar 10
Minimum draw of the water litres/min 1.7
Flow rate in continuous service (∆t 30°C) litres/min 11.1
Gassupply
GaspressureatMETHANEburner(G20) MIN-MAX mbar 3.0-11.40(1.31D.h.w.)
GaspressureatLPGburner(G30) MIN-MAX mbar 7.27-28.20(3.11D.h.w.)
GaspressureatLPGburner(G31) MIN-MAX mbar 9.87-36.30(4.02D.h.w.)
GasflowrateatMETHANEburner(G20) MIN-MAX m3/h 1.36-2.70(0.84D.h.w.)
GasflowrateatLPGburner(G30) MIN-MAX kg/h 1.02-2.01(0.63D.h.w.)
GasflowrateatLPGburner(G31) MIN-MAX kg/h 1.00-1.98(0.62D.h.w.)
Powersupplyconnection V/Hz 230-50
Nominalpowerinput A 0.67
Installedelectricpower W 135
Fan consumption W 34
Pumpconsumption W 85
Applianceelectricalinsulationrating IP X5D
Boilerwatercontent litres 0.7
Empty boiler weight kg 29.0
EOLO Star 24 3 E
9
EOLO Star 24 3 E
10 COMBUSTIONFEATURES
Methane(G20) LPG(G30) LPG(G31)
Combustionefficiency100%Pn % 94.0 94.0 94.0
CombustionefficiencyPmin % 89.9 89.9 89.9
Chimneylosseswithburneron(100%Pn) % 6.0 6.0 6.0
Chimneylosseswithburneron(Pmin) % 10.1 10.1 10.1
Chimney losses with burner off % 0.03 0.03 0.03
Casing losses with burner off % 0.46 0.46 0.46
Casinglosseswithburneron(100%Pn) % 0.60 0.60 0.60
Casinglosseswithburneron(Pmin) % 0.6 0.6 0.6
FluetemperatureMaximumHeatInput °C 110 112 109
FluetemperatureMinimumHeatInput °C 96 92 95
FlueflowrateattheMaximumHeatInput kg/h 53 53 55
FlueflowrateattheMinimumHeatInput kg/h 53 56 54
CO2attheMaximumHeatInput % 6.95 8.00 7.66
CO2attheMinimumHeatInput % 3.25 3.58 3.68
COattheMaximumHeatInput mg/kWh 84 98 66
COattheMinimumHeatInput mg/kWh 150 152 144
NOxattheMaximumHeatInput mg/kWh 97 138 139
NOxattheMinimumHeatInput mg/kWh 60 54 53
Weighted CO mg/kWh 61 - -
Weighted NOx mg/kWh 139 - -
Class NOx - 3 3 3
GasflowratesrefertotheNHVatthetemperatureof15°Candpressureof1013mbar.Fume temperature values refer to an air inlet temperature of 15°C.
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EOLO Star 24 3 E
11 OPTIONAL
DigitalRemoteControlcod.3.016362
Digitalweeklytimer-thermostatcod. 3.014438
Radiotimer-thermostat(wireless)cod. 3.014439
Wall-hungboilerconnectionunitkitcod. 3.015229
Coveringkitcod. 3.019090
Connectionunitkitforrecessboiler.cod.3.016445
Polyphosphatedispenserkitforrecessboilercod. 3.012489
Polyphosphatedispenserkitforwall-hungboilercod.3.013860
Telephonecontrolcod. 3.013305
GSMtelephonecontrolkitcod. 3.017182
Brasscut-offcockskit(forindoorinstallation)
cod. 3.4297
Chromecut-offcockskit(foroutdoorandrecessinstallation)
cod. 3.5324
-15°Canti-freezekitcod.3.016144
Universalframekit(OmniContainer)cod.3.016991
Universalconnectionkitcod.3.011667
Solarvalvekitforwall-hungboilerscod. 3.018911
42041 Brescello (RE) Italy - Tel. 0522.689011 - Fax 0522.689102
www.immergas.com
During the operating life of the products, per-formance is influen-ced by external factors, e.g. domestic water hardness, atmospheric agents, deposits in the system and so on. The data declared refers to products which have been correctly installed and used, in conformity with current regulations. N.B.: it is advisable to have correct maintenance carried out periodically.
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Cod
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- 06/
2008
- Im
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