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Patented aluFer® for a high efficiency and low emission.

Gas condensing boilerUltraGas®

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The UltraGas® condensing boiler with patented aluFer® heat exchanger delivers highest ­efficiency­and­cost­effective­performance.­The­wide­range­of­boilers­match­any­customer’s­requirement.­

UltraGas® (15 - 90) and (125 - 2000D). Advantages at a glance.

Economical Ecological

Easy to use Sophisticated

• Low heating costsduetothelatestcondensationdesignandaluFer®heatexchanger

• Efficient fuel usageduetomodulatingburnertechnology

• Power saving and high efficiencyduetolargewatercapacity

• Up to 6 % higher condensation actionduetoseparatehighandlowtemperaturereturnflows

• Less cleaning requiredduetocleancombustion

• Easy to useduetointelligentdesigndetails

• Central, user friendly controlsusingTopTronic®T

• Convenient and accessible remote maintenance byusingTopTronic®online

• Clean combustionduetopremixburnerwithpatentedUltraclean®

• Lower CO2 emissionsduetominimalconsumption

• Outstanding emissions valuesduetopoweradjustment(modulation)oftheburner

• Space savingduetocompactdesign• Time saving installation

duetoflexibleconnectionoptionsandintegratedwaterpressuresensor

• Large range of applicationsduetoflexiblecombinationoptions

• High output achievableusingdouble/multipleboilerswithcentralcontroller

Patented aluFer® heat exchanger

Simple maintenance

Low emissions due to Ultraclean® combustion

Versatile operation

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cooled exhaust

Additional heat gains

hot exhaust

Condensation technology

Hoval aluFer® technology

The special design of the aluFer® heat exchanger increases­the­surface­area­for­heat­transmission­by­a­factor­of­5.­This­means­that­10-20­%­of­the­energy­in­the­flue­gas­can­be­recovered,­increasing­the­UltraGas® efficiency­considerably.

The­better­conductivity­of­the­aluFer®­–­aluminium­on­the­inside­and­stainless­steel­on­the­outside­–­optimises­the­transfer­of­heat­energy­to­the­boiler­water­with­added­benefit­of­being­ultra­durable,­making­the­UltraGas® highly­economical.

UltraGas® (15 - 90) and (125 - 2000D). Impressive efficiency due to improved condensation design using patented aluFer®.

Improved condensation design

Flue­gases­always­contain­steam;­however,­this­condensing­design­allows­the­flue­gases­and­the­steam­they­contain­to­be­cooled­by­an­additional heat exchanger in the boiler.­The­latent­heat­in­the­flue­is­transferred­to­the­incoming­cold­water,­increasing­the­efficiency­of­ the­boiler.­This­is­due­to­less­fuel­being required to raise the water temperature.

Modern Ultraclean® burner technology

The­modulating­burner­means­the­UltraGas® adapts its output continu-ously­to­suit­the­heat­required.­The­result­is­fewer­energy-consuming­burner­starts,­greater­efficiency­and­significantly­lower­emissions.

Separate high and low temperature return flows

The UltraGas® boiler provides the optimal­conditions­for­condensation.­­This is because of the stepped heat transfer between the separate high and­low­temperature­return­flows­and­the­flue­gases.­This­highly­efficient­condensation­design­means­lower­consumption­of­fuel­and­therefore­lowers­running­costs.

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Large water capacity – simple integration

The UltraGas® does not require a minimum­amount­of­circulating­water,­minimum­boiler­return,­or­flue­gas­temperatures­due­to­its­large­water­capacity.­This­makes­for­simple­integration­into­any­heating­system.­

No­primary­pump­is­required­and­the­low­flow­resistance­allows­the­use­of­a­small,­energy­saving­circulating­pump­instead.

Large water capacity – energy efficiency

The­large­water­capacity­of­the­boiler guarantees continuous operation of the burner and fewer starts.­This­significantly­reduces­consumption­and­therefore­­emissions.

Double / Multiple boilers – maximum output

If­a­very­high­output­is­needed­or­if­maximum­reliability­is­required,­the­UltraGas® can be used­in­a­double­or­multiple­boiler­configuration.­The­TopTronic®T regulator allows up­to­five­boilers­to­be­­centrally­controlled­in­a­cascade.­

Compact design – save space

Its­compact­design­makes­the­UltraGas® the unit of choice for wet areas.­The­unit­is­easy­to­transport,­takes­up­little­space­in­boiler­rooms,­and can be positioned against a wall without­the­need­for­clearance.­

UltraGas® (15 - 90)Innovativecondensationdesignforsingle-familyhomesandmultipleoccupancydwellings..

UltraGas® (125 - 2000D)Spacesavingsolutionsevenforthecommercialandindustrialsizedmodels.

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The­complete­UltraGas®­range­extends­from­15­kW­single­boilers­to­industrial­2000­kW­double­boiler­systems.­At­Hoval­we­have­the­perfect­system­for­any­output­requirement.

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UltraGas® (15 - 90). Innovative condensing gas boilers for small residential buildings.

TopTronic®T controller forfullyautomaticneed-specificoperationandeasyadjustment.

aluFer® heat exchangerExclusiveHovalpatentformaximumheattransmissionandenergyyield.

Condensate drip trayforsafecollectionanddrainingofcondensate.

Concentric vertical flue gas connection and connecting hoseoperatesindependentlyofthesurroundingairbyensuringaconstantsupplyoffreshair.Thisguaranteescontinuos,optimalcombustion.

Fully flexible connections tosuiteverysituationmakinginstallationeasyifaheatingsystemhastobereplaced.Theboilercanbepositionedagainstthewall.

Separate high and low temperature returnsprovideidealconditionsforcondensationandthereforeincreaseenergyrecoveryfromthefluegases.Theconnectionscanbelocatedontheleftorright.

Ultraclean® combustion system and modulating radiant burnermatchestheoutputexactlytotherequirement,reducestheswitchingfrequencyandguaranteesclean,low-emissionandenergy-savingcombustion.

Integrated water pressure sensorforsimpleandtimesavinginstallation.

Allcomponentsarereadilyaccessible,easytocleanandcanbereplacedquicklyandeconomicallyintheeventofabreakdown.Forexample,theentireburnerassemblycanbeconvenientlypivotedoutformaintenance.

Technical dataUltraGas® (15) (20) (27) (35) (50) (70) (90)

Heatoutputrangeat40/30°C kW 3.3-15.0 4.3-20.0 5.0-27.0 5.8-35.0 8.3-50.0 13.6-70.0 16.1-91.0

Heatoutputrangeat80/60°C kW 3.0-14.0 3.8-18.2 4.5-24.5 5.2-32.0 7.5-45.2 12.2-63.3 14.4-83.3

Boilerefficiencyatpartialload30%*(asperEN303) % 107.1/96.5 106.9/96.6 106.7/96.1 106.7/96.1 106.9/96.3 107.1/96.5 107.2/96.6

Max.operatingpressure bar 3 3 3 3 3 4 4

Boilerwatercontent litres 57 55 51 81 75 157 149

Boilerweight kg 131 135 143 161 174 249 268

DimensionsW/H/D mm 520/1400/820 520/1640/820 675/1695/990

*relativetonet/grosscalorificvalue subjecttomodification

Fully flexible connections tosuiteverysituationmakinginstallationeasyifaheatingsystemhastobereplaced.Theboilercanbepositionedagainstthewall.

Separate high and low temperature returnsprovideidealconditionsforcondensationandthereforeincreaseenergyrecoveryfromthefluegases.

Vertical flue gas connectionoperatesindependentlyofthesurroundingairbyensuringaconstantsupplyoffreshair.Thisguaranteescontinuos,optimalcombustion.

Ultraclean® combustion system and modulating radiant burner matchestheoutputexactlytotherequirement,reducestheswitchingfrequencyandguaranteesclean,low-emissionandenergy-savingcombustion.

TopTronic®T controller forfullyautomaticneed-specificoperationandeasyadjustment.

aluFer® heat exchangerExclusiveHovalpatentformaximumheattransmissionandenergyyield.

Integrated water pressure sensorforsimpleandtimesavinginstallation.

Condensate drip trayforsafecollectionanddrainingofcondensate.

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UltraGas® (125 - 2000D). Very cost-effective, with rapid payback for commercial and industrial requirements.

Technical dataUltraGas® (125) (150) (200) (250) (300) (350) (400) (450) (500) (575) (650) (720) (850) (1000)

Heatoutputrangeat40/30°C kW 28–123 28–150 44–200 49–250 57–300 58–50 97–400 97–450 97–500 136–575 136–650 142–720 166–850 224–1000

Heatoutputrangeat80/60°C kW 25–113 25–138 39–185 44–230 51–278 51–320 87–370 87–410 87–460 122–524 122-592 127-655 148-776 199-912

Boilerefficiencyatpartialload30%*(asperEN303) % 106.9/

96.3106.9/96.3

106.7/96.1

106.5/95.9

107.0/96.4

107.3/96.7

107.5/96.8

107.5/96.8

107.6/96.9

107.6/96.9

107.5/96.8

107.7/97.0

107.7/97.0

107.7/97.0

Max.operatingpressure bar 5 5 5 5 5 5 5 5 5 6 6 6 6 6

Boilerwatercontent litres 206 194 359 341 318 428 411 387 375 549 529 478 860 793

Boilerweight kg 383 409 634 672 724 865 903 955 981 1283 1328 1438 1743 1893

DimensionsW/H/D mm 820/1853/1336 930/1953/1684 1110/2100/1775 1290/2116/1928 1550/2169/2243

(250D) (300D) (400D) (500D) (600D) (700D) (800D) (900D) (1000D) (1150D) (1300D) (1440D) (1700D) (2000D)

Heatoutputrangeat40/30°C kW 28-246 28-300 44-400 49-500 57-600 58-700 97-800 97-900 97-1000 136-1150 136-1300 142-1440 166-1700 224-2000

Heatoutputrangeat80/60°C kW 25-226 25-276 39-370 44-454 51-546 51-636 87-728 87-820 87-910 122-1048 122-1184 127-1310 148-1552 199-1824

Boilerefficiencylevelunderpartialload30%*(asperEN303) % 106.9/

96.3106.9/96.3

106.7/96.1

106.5/95.9

107.0/96.4

107.3/96.7

107.52/96.8

107.5/96.8

107.6/96.9

107.6/96.9

107.5/96.8

107.7/97.0

107.7/97.0

107.7/97.0

Max.operatingpressure bar 5 5 5 5 5 5 5 5 5 6 6 6 6 6

Boilerwatercontent litres 412 388 719 682 636 857 822 774 751 1098 1058 956 1720 1586

Boilerweight kg 766 818 1268 1344 1448 1730 1806 1910 1962 2566 2656 2876 3486 3786

DimensionsW/H/D mm 1770/1853/1443 1880/1953/1790 2240/2100/1969 2595/2116/2223 3120/2169/2538

*relativetonet/grosscalorificvalue subjecttomodification

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Intelligent TopTronic® control and Hoval system solutions: a perfectly coordinated combination.

Intelligent command centre for your heating system

The TopTronic®­control­is­the­brain­of­every­Hoval­system.­Innovative­microprocessor­technology­ensures­smooth,­and­continuously­monitored,­operation.

The­clearly­arranged­LCD­display­provides­information­on­important­operating­data,­while­a­single­rotary­pushbutton­and­seven­keys­are­used­to­activate­heating­programs­and­settings.­If­intervention­is­necessary,­the­required­program­can­be­found­in­seconds­in­the­self-explanatory­user­guide.

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Intelligent TopTronic® control and Hoval system solutions: a perfectly coordinated combination.

Room control – an added bonus

One­degree­warmer,­two­degrees­cooler,­set­ the­system­to­economy­mode­or­switch­it­off.­ This­practical­control­unit­not­only­enhances­comfort,­but­also­makes­it­easy­to­regulate­ the­­temperature­to­the­nearest­degree,­without­leaving­the­room.­

Remote access via TopTronic® online

The TopTronic®­online­feature­allows­you­to­control­and­optimise­your­heating­system­from­afar.­The­exceptionally­user-friendly­interface­is­equipped­with­easy-to-­operate­features,­­accessible­from­either­your­PC­or­Smartphone.­

Additionally,­you­can­use­your­mobile­phone­to­communicate­with­your­heating­system.­­Previously­programmed­phone­numbers­can­receive­fault­notifications­via­text,­so­that­you­ can­always­be­in­touch­with­your­system.

Flexibility to suit any need

With­the­inclination­towards­renewable­energy,­ an increasing range of technologies is being integrated­within­buildings.­It­can­control­systems­with­up­to­five­heat­generators­and­ten­mixing­circuits,­therefore­a­wide­range­of­energy­sources­such­as­solar,­biomass,­and­ambient­heat­can­be­utilised­together,­delivering­a­well-coordinated­system­to­meet­your­heating­demands.

Water heating

Hoval­offers­a­wide­variety­of­water­heaters­and­storage­units­from­single-family­homes­to­­commercial­properties,­with­capacities­ranging­from­160-2000­litres.­

Whether­your­aim­is­to­produce­hot­water­as­ecologically­as­possible,­or­to­achieve­an­­unbeatable­price-performance­ratio,­the­extensive­product­range­guarantees­a­solution­to­meet­all­building­conditions.

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What you can count on.

Hoval Service.For specialist commissioning and maintenance of your Hoval appliances contact our service and spare partsdepartment or your local Hoval partner. This is your guarantee for economical operation, reliability and added value.

Responsibility for energy and environment.The Hoval brand is internationally known as one of the leading suppliers of indoor climate control solutions. More than 65 years of experience have given us the necessary capabilities and motivation to continuously develop exceptional solutions and technically superior equipment. Maximising energy efficiency and thus protecting the environment are both our commitment and our incentive. Hoval has established itself as an expert provider of intelligent heating and ventilation systems that are exported to over 50 countries worldwide.

Clever and complete solutions from a single sourceConsistent Hoval system technology simplifies the links between different technologies and establishes a reliable platform for efficient and dependable solutions.With us, you can easily incorporate solar or biomass energy solutions into your heating system. Hoval – everything you need from one source.

Hoval AktiengesellschaftAustrasse 70, FL-9490 VaduzPrincipality of Liechtenstein(Swiss customs territory)Phone +423 3992 400Fax +423 3992 618E-mail: info@hoval.comwww.hoval.com

Your heating planner / installation engineer

Planning support from expertsHoval are happy to assist you and your planning partners in developing progressive systems, allowing you to take advantage of our expertise, and to count on the experience of our specialists.

Ask about Hoval system solutions and learn more about the many ways to combine highly efficient condensing boilers with our range of renewable products.

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