INSIGHTS  Information from the Hoval Group | 2017 | No. 2
Complete systems are the future
Introduction.
Our mission is to render increasingly complex products and solutions as simple as possible in an increasingly demanding environment, both now and in the future. It’s an exciting challenge that we are more than happy to take on! Peter Gerner
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Dear Reader,
At Hoval, we have a vision – and we are getting closer with
Our sophisticated system technology and our universal
every step: “We are the leading provider of technologically
system control philosophy (virtually unheard of from any
advanced, innovative, intelligent and simple indoor climate
other competitor) help our partners to reduce the complexity
solutions. Our uncomplicated solutions and processes
of solutions. With our comprehensive advice and
create measurable economic and ecological added value for
professional customer service, we can provide additional
our customers.”
support which often pays off in terms of costs for our customers as well.
Simple solutions form a central tenet of our approximately twenty-year-old vision. Peter Frick, our long-standing
Digitisation will play a key role in helping us to simplify
president of the board of directors who recently stood down,
complex solutions as much as possible. The introduction of
attached great importance to simple solutions in his
the smartphone ten years ago has profoundly changed our
entrepreneurial vision. His successor Dr Max Egli played a
behaviour and many processes. We expect the next ten
key role in shaping this vision two decades ago, and he will
years to be extremely dynamic. Business processes that
continue to carry it forward with us into the future. This is a
have remained the same for decades will have to change.
principle that is not always obvious – but it is incredibly
In addition, online connections also enable a variety of new
important in a technology-loving environment!
services that will bring added value to our customers. We are working intensively in these areas so that we can play
Simple solutions are crucial for both our end customers and
a proactive role in shaping the digital future. For the benefit
partners as well as for our internal processes. Today’s end
of our customers – but also of our employees.
customer is often unsure about making the right choice. Which heat generator is the right one, which system solution
Our mission is to render increasingly complex products and
makes sense, and what consequences will new laws,
solutions as simple as possible in an increasingly demanding
regulations and funding measures have in the coming
environment, both now and in the future. It’s an exciting
years? The large number of questions often causes people
challenge that we are more than happy to take on!
to put off decisions regarding renovations. Each and every one of us is familiar with this type of behaviour in other fields. It is therefore important to consider these fears when we provide sales advice, and to offer clear, understandable and comprehensible recommendations. Another particularly important factor is that our partners find it easy to work with us. New regulations will make future solutions even more demanding – read more on page 6.
Peter Gerner, Management Board Hoval Group Co-CEO
Contents.
10.
A residential building as a futuristic energy supplier Sustainability dictates a very bold design. The Marxer Active Energy Building in Liechtenstein also supplies the surrounding buildings with solar power. And is just as innovative in dealing with heating and cooling.
15.
Hoval is top of the class Internationally renowned educational institutions such as Eton College and the London School of Economics rely on Hoval. They all have good reasons for doing so.
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18.
A great time guaranteed at the shopping centre The third-largest shopping centre in Austria – PlusCity in Pasching – has massively increased in size. It now offers extensive leisure activities Ž with a technical side: an UltraGas twin gas condensing boiler, which can also be monitored remotely.
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Europe’s greenest data centre Eastern Switzerland boasts the most energy-efficient data centre in the country – if not all of Europe. The superlative is sustainably justified, with a cooling system from Hoval.
26.
Gas boiler and heat pump in one unit Hoval has solved a dilemma: What do we use to replace a gas boiler in the era of renewable energies? Answer: the ® Hoval Belaria hybrid SRM heat pump.
22.
A clever combination of heat pump and pellet boiler Hoval combines heat pumps and wood pellet boilers into a complete system. Its total output is more than the sum of its parts – with 100% renewable energy.
33.
Operating your heating and comfort ventilation with a single app ® If you are already controlling your heating with a TopTronic E, you can also do it via your smartphone. The only requirement is an online connection for the ® ® TopTronic E. And your HomeVent comfort ventilation can now also be controlled via Hoval’s smartphone app.
In focus: Complete systems.
Generating heat: complete systems are the future Be it for new builds or renovations: complete solutions for heating and hot water are the future. Many European countries are stipulating minimum proportions of renewable energy sources. Efficient complete systems that generate heat in an environmentally friendly manner are therefore a must for every prudent investor. They are also gentle on your wallet. The homework has been set, but has not yet been done. Many European countries have formulated their energy policy. Germany is about to merge the Energy Saving Ordinance (EnEV) and the Renewable Energy Heat Act (EEWärmeG) into the Gebäude-EnergieGesetz (GEG, Building Energy Act). In Switzerland, the Mustervorschriften der Kantone im Energiebereich (MuKEn, model cantonal provisions in the energy sector) will soon be adopted into the energy legislation.
the mandatory rules, and on the other, a real jungle of technical possibilities.
This means that no investor, planner or installer will be able to get around the specific mandatory regulations. It is therefore up to investors, planners and installers to implement the regulations and do their government-mandated homework. On the one hand, we have
Hoval offers system solutions for three different segments: for detached homes with an output requirement of up to 30 kW, for apartment buildings and small-scale commercial buildings up to 500 kW, and for large-scale and industrial complexes that rely on 500
The path to a complete system “We prepared for this event,” says Stefan Müller, who heads the entire heating technology product management division at Hoval. “We are already able to offer standardised system solutions that will meet the specifications of the GEG in Germany and the MuKEn in Switzerland 100%.”
kW and more. “Above all, we also have bivalent systems for all three segments that operate partly or entirely with renewable energy sources, and are highly efficient as complete solutions for generating heat and hot water,” says Stefan Müller. The individual Hoval components of these bivalent complete solutions are not only compatible with each other – they complement each other. This results in higher performance, higher energy efficiency and the lowest possible impact on the environment – if any. A Hoval complete system also includes comfort ventilation if desired, or as required for a Minergie house.
The ability to intelligently control the system solution is the decisive factor. Stefan Müller Head of Product Management Heating Technology
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Example: detached house ® The new Belaria hybrid SRM heat pump combines an air/water heat pump with a gas boiler. It is the simplest and cheapest renovation solution for detached and semidetached houses. Read more on page 26.
Example: apartment building There are apartment buildings in Switzerland which operate exclusively with renewable energy sources. These buildings contain hybrid systems where heat pumps and wood pellet boilers achieve more than the sum of their parts. If hot water is also supplied by thermal solar collectors, the already highly efficient bivalent solution becomes a trivalent one. Read more on page 22.
Example: large buildings The bivalent complete system, which Hoval has successfully recommended to the German car manufacturer ® Porsche, consists of four Belaria dual AR (60) air/water heat pumps and an ® UltraGas (500) condensing boiler. One factor above all led to Porsche’s investment decision: the heat pumps and condensing boiler can be connected to the Hoval CAN bus and controlled as a complete system with the Hoval ® TopTronic E. “The ability to intelligently control the system solution is the decisive factor,” concludes Stefan Müller. Read more in the box on page 8.
In focus: Complete systems.
Minimising complexity The complexity of bivalent or trivalent systems cannot be ignored. However, investors, planners and installers can minimise and even delegate potential issues by purchasing all the components of a complete system from a single source. Buying the boiler from one manufacturer, the hot water tank from another and the solar thermal system from a third will definitely fall short of the mark: it certainly cannot guarantee energy efficiency, nor does it offer the control technology for the complete system. And usually, none of the manufacturers will accept responsibility if the chosen product combination does not deliver the expected results. It’s enough to make any investor or system operator despair. In contrast, if all the components of a complete system are from a single source and managed centrally, this can simplify the planning, commissioning, maintenance and service. Reducing costs In order to offer energy-efficient and environmentally friendly complete systems, the manufacturer must demonstrate holistic expertise that covers all the components and must incorporate this expertise into their sales advice. In addition to technical details, this advice must also include the economic perspective. Depending on the selected complete solution from Hoval, the investment costs are lower than if the components are provided by different suppliers and the control technology has to be programmed first. Since the system solution is also maintained and coordinated as a whole, the operating costs are lower and energy efficiency is improved. For far-sighted investors, including property managers and home owners, who are planning to invest, it is not enough to consider the initial purchase costs alone – they must look at all the costs incurred during the entire life cycle of a system. Looking at this total cost of ownership, it pays to consider complete solutions for heating and airconditioning technology.
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Control matters ® The Hoval TopTronic E system controller relieves investors, system operators, planners and installers of a great deal of worry. It networks all the Hoval components in the complete system and precisely coordinates them with each other. In contrast, if components from different manufacturers are brought together to form a system, it is complicated and expensive to integrate them into the control technology. ® The TopTronic E even uses the Internet connection to incorporate the specific weather development at the respective location. The energy consumption of the complete system can therefore be reduced by up to 15%. ® The TopTronic E works just as well with modulating heating pumps, for example in solar systems, as it does with cooling cascades for heat pumps. It can generally control cascades with up to eight components. Furthermore, it can be integrated into a higher-level building control system to centrally regulate and control the room temperature, hot water and comfort ventilation, as well as sun blinds and light sources. ® The Hoval TopTronic supervisor is available as an in-house higher-level control system for large systems. Read more on page 32.
In the market: Liechtenstein.
PETER FRICK HANDS OVER TO MAX EGLI Peter Frick has handed over the role of president of the board of directors of the Hoval Group – which he has held since 1985 – to Max Egli, the previous vice president. Peter Frick will continue to serve as a member of the board of directors. Hoval has Peter Frick to thank for a long phase of continuous expansion and innovation. Throughout his term of office, he has seen the launch of ground-breaking products and has expanded the geographical area of the corporate group significantly. With his foresighted approach to business and straightforward, personable manner, Peter Frick continues to play a key role in shaping the corporate culture of the Hoval Group to this day. If anyone is mad about technology, it is him. He knows many of the employees by name and genuinely takes an interest in them. The entire global Hoval team would like to thank Peter Frick wholeheartedly and we are delighted that he will continue to be a part of the board of directors.
Peter Frick has been president of the Hoval Group board of directors since 1985. At that time, he took over from company founder Gustav Ospelt. Now Peter Frick is handing over to Max Egli.
Peter Frick informed the board of directors of his plans to step down in advance to give them plenty of time to choose a successor. Max Egli brings a wealth of industry experience and a close bond with Hoval to his new role as president. He has been a member of the board of directors of the Hoval Group since 1997 and vice president since 2016. Max Egli knows the company and its technologies inside out and will perpetuate the family atmosphere that prevails throughout the Hoval Group. He will guarantee continuity both internally and externally.
THE TRANSATLANTIC HOVAL ALLIANCE What does Hoval have to do with Boeing, the world’s largest aircraft manufacturer? Our sales partner CleaverBrooks is the connection: together with Hoval, the company develops products for the North American market which are highly ® efficient due to their use of aluFer technology. And that’s not all.
products are also used in numerous stadiums, including those of the Atlanta Falcons, Sacramento Kings and Detroit Red Wings.
Hoval have been in partnership with CleaverBrooks for almost twenty years, and in that time, employees from both companies have become friends for life. CleaverBrooks specialists realised at a very early stage that ® Hoval’s aluFer heat exchanger would enable them to launch highly efficient products on the North American market, and CleaverBrooks developers in Milwaukee know they can always rely on the Hoval development team in Vaduz. As a result of the strong partnership, the products and the sales network, thousands of CleaverBrooks products ® featuring aluFer technology are now in operation. Boeing is not the only impressive name – CleaverBrooks’ customers also include General Motors as well as schools, hospitals, government institutions and military bases. CleaverBrooks
Sean Lobdell (second from left) and Rakesh Zala (second from right) from CleaverBrooks thanked Martin Antoska, Markus Telian, Peter Frick and Harald Verling for the successful and long-lasting partnership for the North American market.
In operation: Liechtenstein.
A residential building as a futuristic energy supplier Sustainability has dictated a very bold design, which is attracting a great deal of attention. The Marxer Active Energy Building in Vaduz, Liechtenstein, also supplies solar power to the surrounding buildings, and presents a new approach to dealing with heating and cooling. Hoval is very enthusiastic about implementing this idea. It takes vision and courage to build something like this. The Marxer family has both – as do architectural partners Anton Falkeis and Cornelia Falkeis-Senn. “Today’s cities are responsible for 75% of the world’s energy consumption, and they emit 80% of the carbon dioxide caused by humans,” says Anton Falkeis. “In order to put a stop to this rapid development, we need to develop new urban structures that reduce energy consumption and harmful emissions.” In collaboration with the Lucerne University of Applied Sciences and Arts, Anton Falkeis and Cornelia Falkeis-Senn have studied the matter in detail. The Marxer Active Energy Building is the answer.
Solar power for the entire cluster The architecturally unique building with twelve apartments features an entire energy production system. Photovoltaic modules which are located on the building’s south-facing façade generate solar power, while the movable solar wings on the roof align themselves according to the position of the sun. With this system, the building generates more than enough power (beyond its own consumption requirements) to supply the surrounding buildings or to feed the electric energy into the public grid. “We are developing the cluster idea where, in cities, an Active Energy Building can supply several houses with electricity,” explains Anton Falkeis. Therefore, the Marxer Active Energy
A- and V-shaped concrete columns result in flexible floor plans.
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Building can also use its own power to ® operate the Thermalia dual H (46) brine/water heat pump, the EnerVal (1000) buffer tank, the CombiVal CSR ® (1250) water heater and the HomeVent comfort ventilation units. Cooling and heating from climate wings The east and west façades of the fourth floor are equipped with patented climate wings designed by falkeis2architects. They consist of phase change
material (PCM), which either liquefies or solidifies depending on the outside temperature. While changing state, the PCM stores the heat or cold, turning the climate wings into latent storage systems. According to Cornelia Falkeis-Senn: “The wings on the east side open during the night to absorb space radiation and therefore also cold.” During the day, when the wings are closed, this cold is then released directly into the room as required. The wings on the west side are open during the day, to absorb and store heat which is then fed directly into the ventilation system. For this purpose, the supply air ducts are connected to the PCM
heating wings via change-over valves ® between the HomeVent comfort FR (250) ® and HomeVent comfort (180) comfort ventilation units and their outlets. The control unit decides whether the supply ® air from the HomeVent needs to flow via the PCM wings, where it is subsequently reheated before flowing into the rooms on the third and fourth floors. A bearing structure for flexible room design The bearing structure of the building is also oriented towards the future. Free-standing A- and V-shaped concrete columns (shapes which have been copied from nature) absorb both the vertical and horizontal forces and
enable flexible floor plans: rooms can be enlarged or reduced depending on requirements, while the statics remain the same. Furthermore, the columns have the appearance of sculptures and create sophisticated living spaces. The sustainability of the Marxer Active Energy Building is impressive, both on a ecological and aesthetic scale. Anton Falkeis: “With this project, we have demonstrated that our newly developed technology can be implemented in a highly complex form. Our further research will focus on achieving less complex structures.”
A bold design with an ecological purpose: solar wings on the roof, climate wings on parts of the façade.
In operation: Croatia.
Fresh air at all times in the “green building” A sign of the future: the Pannonian wood competence centre in Virovitica in Croatia was built according to “green building” principles. There is no better match for this paragon of sustainability than an indoor climate system with decentralised units. Wood is an ideal material for all kinds of tasks – including economic development. Ivana Filipović and the European Union are well aware of this. That is why the Pannonian wood competence centre is almost 100% funded through the EU’s Structural and Investment Fund. Ivana Filipović is the director of the centre: “We connect the academic, public and private sectors. We support the wood industry and serve as an innovation and development centre for wood processing companies. We have a fully equipped production hall and can also advise on financial matters.” The wood competence centre in the Croatian city of Virovitica near the border with Hungary is said to be the largest project ever supported by the EU Structural and Investment Fund.
The construction costs amount to 45 million kuna in total – around 7 million Swiss francs or 6 million euros. Perfectly integrated into the plantcovered roof Unsurprisingly, the centre is constructed from wood and has a striking appearance. In the middle of the green ® roof are two RoofVent roof ventilation units. “They blend perfectly into the surroundings,” says Ivana Filipović, “and they give added significance to our whole story. We want to ensure the highest possible energy efficiency in all areas.”
Complete system without ventilation ducts ® ® RoofVent and TopVent combine to form an efficient decentralised indoor climate system. As the units are decentralised, there is no need for ventilation ducts which might otherwise get in the way of work in the production hall. And there are no draughts either – just a constant supply of fresh air at the desired temperature. “We barely notice the ventilation system,” says Ivana Filipović, “but we always have the right climate conditions in the hall.”
Inside the Pannonian wood competence ® centre, there are two TopVent recirculation air units mounted on the ceiling.
We barely notice the ventilation system, but we always have the right climate conditions in the hall. Ivana Filipović Pannonian wood competence centre
On the green roof of the Pannonian wood competence centre: two Roof Vent ® roof ventilation units. Inside the centre: two TopVent ® recirculation air units – and no ventilation ducts which might get in the way of work in the production hall.
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In operation: Romania.
Rooms full of mystery This castle in the Romanian city of Câmpina has its own mystical history. It is said that the spirit of Iulia Haşdeu – a poet who died from tuberculosis in 1888 – can still be seen there today, playing the piano. The castle that is dedicated to her memory also has an altogether more tangible technical side. Following the tragedy of his daughter’s death at the age of 19, the scholar Bogdan-Petriceicu Haşdeu turned to spiritualism to comfort him in his grief. In 1894, he began to build a castle for her. He claimed that his plans were inspired by Iulia’s immortal spirit. The major earthquake that struck Romania on 4 March 1977 caused cracks to form in the castle and there were concerns that it might collapse. The repair work has long since been completed, but the restoration is still ongoing today. The castle, with its crenellations and richly decorated rooms, reopened to visitors in 1995.
Effective heating in a small space The new millennium saw the beginning of a new chapter in the history of the castle, with the installation of a new heating system in the year 2000. Due to its listed building status, the scope for modifications was extremely limited, both in the rooms at the rear and in the sumptuous state rooms that are open to tourists. And yet it was still possible ® to find a niche for the TopGas (60) wall-hung condensing boiler. The boiler has been doing sterling work ever since – a true mark of quality. ® The TopGas heats the rooms of the castle, which cover an area of around
2 400 m and have ceilings over five metres high on the ground floor, with its output of 60 kW. The Hoval control module which is used to manage the heating can also be found on the ground floor.
Keys played by a ghostly hand As you wander through Iulia Haşdeu Castle you are sure to come across the grand piano, whose keys sometimes move as though played by a ghostly hand, causing the strings to vibrate. Many believe that it is the ghost of Iulia Haşdeu playing the piano. Her immortal spirit is also said to stop people cursing in the vicinity of the castle.
Could it be a ghost playing the piano now and then at Iulia Haşdeu Castle? If it is, it’s not interfering with the wall-hanging condensing boiler from Hoval.
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In operation: United Kingdom.
Hoval is top of the class Internationally renowned educational institutions such as Eton College and the London School of Economics rely on Hoval. The often extensive building complexes require high heating outputs to cover all kinds of heating needs, not least making sure that there is always hot water for showers.
In operation: United Kingdom.
Eton College: Hoval is top of the class Even Princes William and Harry would be amazed: the CT-plus water heaters used at Eton College can supply up to 1400 litres per hour. The traditional elite British school, which was founded in 1440 by King Henry VI, needs a reliable hot water system that can provide large volumes at all times. 1300 boys aged between 13 and 18 study at Eton College, learning valuable life skills as well as improving their career prospects. Sport is also an important part of life at the school. The boarders – who at one time included Princes William and Harry – are divided into 25 houses. The CT-plus water heater features large heating surfaces. Its output is comparable with that of the Modul-plus – see article on page 28. At Eton College, multiple units have been combined into one system. The water can circulate constantly, and Hoval knows that it is doing its bit to support the development of the prominent figures of tomorrow. No fewer than 19 British Prime Ministers have attended Eton College to date.
London School of Economics: The ideal atmosphere for research The London School of Economics and Political Science has developed a reputation for delivering research findings that cause a global sensation in the field of economic and social sciences. To create the right atmosphere for teaching, learning and researching on the campus in the heart of London, Hoval is on hand with boilers that provide reliable heating for rooms and water. This atmosphere is perfect for cultivating future Nobel Prize winners – the London School of Economics can already count 16 previous winners among its alumni.
London School of Economics: Hoval provides pleasant heat, and an atmosphere that continuously promotes sensational research results.
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Eton College: 1400 litres of hot water per hour for the boys at this elite school.
Hoval knows that it is doing its bit to support the development of the prominent figures of tomorrow.
Stroud School in Romsey: Sustainability can be learned Keith Goldie, who is Operations Manager at Stroud School in Hampshire, has two new buildings to look after – and was clear about what he wanted: “Rather than carrying on using gas, we wanted a more sustainable solution. We looked at various options and decided on biomass. Wood is particularly suitable for our rural location, and the wood pellets can be sourced locally. This solution helps us to show the pupils at our school that there are alternatives to fossil fuels.” To heat its rooms and water, the school now uses two BioLyt (160) wood pellet boilers which are connected to two 4000 l buffer storage tanks. The system forms the heart of a new underground local heating network which supplies heat to the two new buildings and the main building. The grounds of Stroud 2 School extend over around 80,000 m . It is possible that further buildings will be connected to the local heating network in the future.
Stroud School: Is betting on biomass and has set up a local heating network.
Wood is particularly suitable for our rural location, and the wood pellets can be sourced locally. Keith Goldie Stroud School
Pontllanfraith Secondary School in Blackwood: From coal to wood
Braintree College: “The best boiler for the job”
The amount of CO2 absorbed by trees is the same as the amount released when their wood is burned. This makes biomass CO2-neutral. So it’s time to say goodbye to dirty coal! Pontllanfraith Secondary School in Wales is now using three STU (350) wood pellet boilers, and the former coal cellar has been renovated and waterproofed so that it can be used for storing wood pellets. The stoker provides precisely the amount required for the desired degree of heat. Depending on the heating requirements, one, two or all three of the boilers can be in operation at any one time. Although wood has a slightly lower calorific value than coal, the new wood pellet boilers achieve an efficiency level of 90%, compared to the 68% achieved by the former coal boilers. Furthermore, the new boilers are also easier to maintain, and the wood ash can be used as a natural fertiliser.
The specifications were strict and ambitious: flexible output depending on the heating requirements, low pollutant emissions, easy maintenance, as few adjustments as possible to the existing pipework. The result of the feasibility ® study was clear: the UltraGas condensing boiler was up to the task. Adrian Sharp, the consultant engineer from Atkins Management Professional Services, judged it to be “the best boiler for the job at Braintree College”. “We are expecting to reduce the energy costs by around 40%, as the ® UltraGas achieves energy efficiency of up to 109.5% by means of heat recovery.” With their cascading and ® modulation, the three UltraGas – each with an output of 500 kW – adapt precisely to current requirements and they have a much smaller ecological footprint than the previous heating system. The college was even able
to simplify its pipework and reduce the number of circulation pumps. This has freed up a considerable amount of space in the boiler room, making the maintenance work – which is simple now anyway with the new system – even easier. The Braintree College campus in 2 Essex covers over 50,000 m and accommodates around 1000 students. Site manager Bryan Yates can easily monitor the new system, which is used exclusively for room heating, from the PC in his office. The control system ® also ensures that the three UltraGas condensing boilers take it in turns to take the lead in the cascade. This means that all three boilers are used equally. The boilers have not yet been in operation for a full year, but Bryan Yates says that the high energy efficiency levels are already evident.
In operation: Österreich. Austria.
A great time guaranteed at the shopping centre The PlusCity shopping centre in Pasching has expanded from 50,000 to 70,000 m2. As Austria’s third largest shopping centre, it offers a wide range of leisure activities which depend on a technical component: an UltraGas ® (2000D) twin gas condensing boiler. The fact that the boiler can also be monitored remotely via the TopTronic ® E was a key argument in its favour. The operators of PlusCity know that it is not enough to offer shopping alone these days. The public want an all-round experience. The expansion of the shopping centre is the operators’ response to the Internet with its electronic shops. The company behind PlusCity has therefore invested around 140 million euros in the expansion. Shopping – and a cinema trip too As part of the renovation work, the Hollywood Megaplex cinema was moved right into the shopping centre. The old cinema building was demolished and an extra car park was built in its place. The “Ocean Park”, which includes billiard tables and bowling lanes, is another new feature. A fifth of the 220 rented spaces in the centre are occupied by cafés and restaurants. PlusCity is also connected to the tram network. It is hoped that 13 million people a year will visit the centre to enjoy an all-round experience including shopping, food and drink, as well as cultural and sports activities. Reliable heat ... The extension, which was built in 2015/2016 and covers a ® total of 20,000 m², is heated by an UltraGas (2000D) twin gas condensing boiler. Following extensive training by Hoval customer service representatives, the internal building services team are now able to look after the system themselves. ® ... perfectly controlled with TopTronic online ® The building services team describe the TopTronic E system controller as a real success in terms of modern control technology: with entertainment facilities including the cinema, bowling lanes and restaurants, the shopping centre is open almost 24 hours a day and the risk of a potential ® failure must be kept to a minimum. With the TopTronic E, the building services team can access the twin gas condensing boiler from anywhere. The controller also knows what the weather is going to do and adapts the heating system accordingly in order to save energy.
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Advantages of the UltraGas ® The Hoval UltraGas ® condensing boiler can be integrated into an existing heating system quickly and easily, reducing installation costs considerably. With its sophisticated technology, the UltraGas achieves maximum efficiency when faced with varying operating conditions. This saves operating costs and means that the somewhat higher acquisition costs can be paid off quickly. ®
® The UltraGas features extremely impressive technology:
The large heating surface in ® the aluFer heat exchanger recovers more heat and reduces gas consumption. The water layers in the boiler are optimised to ensure high efficiency at all times. The output can be modulated to any setting, further reducing gas consumption. Separate high-temperature and low-temperature returns increase efficiency even further.
Twin boiler system for the extension of the PlusCity shopping centre in Pasching. With the TopTronic E online system control unit, the building services team can access it from anywhere. ÂŽ
PlusCity: offering an experience beyond the world of shopping.
In operation: Switzerland.
Europe’s greenest data centre The meadow is green, and so is the (almost) black cube that is now sitting on it. The most energy-efficient data centre in Switzerland – if not Europe – is currently being built on the edge of Gais, a village in the canton of Appenzell Ausserrhoden. The superlative is sustainably justified – with an adiabatic cooling system from Hoval. In the small area of the Appenzeller Land, it is possible to make a big impact in many ways – not in relative but in absolute terms. The St. Gallisch-Appenzellische Kraftwerke (St. Gallen-Appenzell power plants, SAK) are currently building a data centre, and its shell is now finished. It boasts the highest level of security, high capacity and the highest possible standards in environmental sustainability. The data centre is enveloped by 3670 m3 of concrete and 320 t of reinforcement. 2 The finished building will comprise two floors, each measuring 450 m and containing 150 server racks. Customers will be able to store their data here as of 2018. The electricity supplier and data service provider SAK, which is opening up another business segment with its data centre, promises that the building will “provide redundancy for every single rack”. According to the regional newspaper, Eastern Switzerland will now be home to a “data safe classified with the highest Tier IV security level and an uptime of almost 100 percent”.
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Data centres and aeroplanes Two scientists have come to an astonishing conclusion: Irishman Peter Corcoran and Swede Anders S.G. Andrae have concluded in a joint study that the worldwide energy consumption of data centres is comparable to the energy consumption of global air traffic. Christian Richter, who is responsible for the adiabatic cooling of data centres at Hoval, adds an equally surprising figure: “Our system saves around 70% energy compared to conventional cooling systems.”
Energy efficiency redefined SAK has made a wise choice with Gais: at 919 metres above sea level, it is the ideal location for a data centre. Free cooling provided by inflowing fresh air and adiabatic cooling are enough to maintain the server rooms at a cool temperature. It is not necessary to add a mechanical cooling system. The air-conditioning units of the ServeCool line, which Hoval developed specifically for data centres, are implemented in Gais without requiring a water chiller for aftercooling or compressors. During the adiabatic cooling process, the air conditioners spray water onto the fresh air to cool it down. Adiabatic cooling therefore uses moisture, which absorbs heat from the air, to lower the temperature. In Gais, rainwater is collected for the adiabatic cooling process. At the heart of the ServeCool air-conditioning units are the cross-flow plate heat exchangers, which Hoval designed specifically for the ServeCool line with Hoval Enventus. With their lateral length of 1.20 m, they are some of the largest individual plates manufactured by Hoval Enventus. Due to their size, they offer above-average energy recovery efficiency. The total surface area of the highly efficient plate heat exchangers in Gais amounts to 1200 m2. Since the fresh air and recirculation air flow separately through the heat exchanger, it is not possible for dust or moisture to infiltrate the highly sensitive data centre.
There are eight ServeCool air-conditioning units with their cross-flow plate heat exchangers per floor, and this naturally requires quite a lot of space. On the other hand, they do not require water pipes to dissipate the heat. And due to their efficiency, they significantly contribute to lowering the PUE value to 1.15 – far below the 1.5 average for data centres. The PUE or energy efficiency value – PUE stands for Power Usage Effectiveness – is calculated from the total power consumption divided by the energy consumption of the server racks. Waste heat for the cheese dairy And what happens to the waste heat in the Gais data centre? Once again, SAK’s pioneering attitude comes to the fore, combining technology with nature: right next to the data centre is the Bergkäserei Gais dairy, which will use some of the heat to pasteurise milk. Christoph Baumgärtner from SAK, who is responsible for constructing and operating the data centre in Gais, expects heat of 1.5 million kWh. “However, we only recover 10% of the accumulated waste heat,” he adds, pointing out that they also intend to use the waste heat to heat the building. Incidentally, the striking cube in Gais is black due to the photovoltaic panels that cover the roof and all four exterior walls. Therefore, solar energy can be used to cover peaks, and electricity from hydropower still forms SAK’s core business. The data centre in Gais takes sustainability very literally.
Solar panels cover the entire building shell of the data centre in Gais – the dark façade is an inviting prospect for digital photography fans. The ServeCool air-conditioning units do not require mechanical cooling, resulting in unbeatable energy efficiency.
In operation: Switzerland.
A clever combination of heat pump and pellet boiler When you find a perfect pairing of two components, their overall performance exceeds the sum of its parts – and with 100% renewable energy. Hoval has combined heat pumps with wood pellet boilers to create complete systems for apartment blocks in southern Switzerland. This example is sure to set a precedent. Here more than anywhere else, efficiency has to be coupled with environmental protection: Lake Maggiore sparkles in the sun and the view from the buildings’ projecting balconies almost takes your breath away. Here in Brissago, an air/water heat pump and a wood pellet boiler have been brought together for the first time. The three buildings, each of which contains eight apartments, were built in 2013. In spring and autumn, the ® Belaria (33) heat pump copes perfectly well on its own. In the depths of winter, the BioLyt (70) wood pellet boiler supplies the heat. And in between, the two units share the work between them. How the two units work together In this system, each unit neutralises any potential weak points of the other unit: the pellet boiler does not have to keep switching on and off during spring and autumn, which only reduces its efficiency, and there is no need for it
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to struggle in low-load operation. For its part, the heat pump – which would otherwise reach its limits at low outside temperatures and consume excessive amounts of power – can relax and let the pellet boiler take over. Claudio Galliciotti, service manager at Hoval Switzerland in the canton of Ticino, has been monitoring the system in Brissago over the past few years: “The pellet boiler covers 60-65% of the annual demand of 150,000 kWh, while the heat pump covers 35-40%.” Although the pellet boiler is designed for 100% of the heating load, the pellet store can be smaller than usual as the biomass only has to provide 60-65% of the annual heat. There is also a separate energy buffer storage vessel for each heat generator. This means that the efficiency of the heat pump can be kept high with its lower flow and return temperatures, and the energy can be stored and layered in accordance with the heat generator in question.
A strong combined performance Daniel Hegele, who is responsible for developing the wood pellet boilers at Hoval, highlights some other key points: “The bivalent hybrid system, which combines a heat pump and a wood pellet boiler, excels in four key areas for larger systems above 50 kW output in particular: the investment is relatively low compared to other cascade heating systems, as are the space requirements. The system works with 100% renewable energy – and is still more efficient than a pellet heating system or a heat pump on its own.”
The solution is particularly worthwhile for new builds, but is also an option when refurbishing apartment blocks because the pellet boiler can provide the high flow temperatures required on cold days. And in southern regions, a heat pump offers additional benefits in summer: it can be put into reverse operation and used for cooling instead.
The system works with 100% renewable energy – and is still more efficient than a pellet heating system or a heat pump on its own. Daniel Hegele Head of Development Biomass
In operation: Switzerland.
Hydraulic system diagram for the “Belaria with BioLyt” hybrid system. The heat pump is always heating; on cold days, the wood pellet boiler reheats the flow temperature.
Even more efficient with TopTronic ® E A Hoval system combining an air/water heat pump and a wood pellet boiler is also proving to be a real success in ® Losone in Italian-speaking Switzerland: a Belaria twin (25) and a BioLyt (50) supply the annual heat in a ratio of 45:55 for twelve residential units divided between three buildings. The complete system, which also includes UltraSol thermal solar collectors, is controlled using the ® TopTronic E control technology. The controller obtains the weather forecasts for Losone from the Internet and coordinates the heating operation with the forecasts. ® The TopTronic E also knows precisely when to prioritise which energy source. This increases the efficiency of this already very efficient system even further.
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In detail: Oil condensing boiler MultiJet ® (LSP).
The natural successor for heating When it is cold outside and your old boiler chooses that precise moment to stop working, you need a new one straight away. It helps enormously if you can install the new boiler quickly and inexpensively with minimal modification work. Now you can, with the MultiJet ® (LSP) oil condensing boiler with horizontal storage tank. It is also ideal for renovations. They are from a different time, they have been doing their duty for many years and they are slowly getting tired. These elderly boilers go by the name of Euro-3, Mini-3 or EuroLyt, and all three have a horizontal storage tank. To ensure that, when their time comes, they are easy to ® replace, Hoval is now launching the MultiJet LSP. LSP stands for “Liegespeicher” (German for “horizontal storage tank”) and denotes the boiler’s key feature: previously, the jet heat exchanger and the two-stage, low-emission burner were only available with an upright hot water tank. Now there is a horizontal water heater available with the same design as the horizontal storage tanks of the Euro-3, Mini-3 and EuroLyt. The connections are therefore located in the same or very similar positions and no modification work is required. The connection lines to the heating fittings group only require slight adjustments. The flue gas connection is positioned slightly lower down. As a result, the chimney does not require a new opening – the angle of the existing opening merely requires a slight modification. The boiler and the body are delivered as separate pieces, ® so the MultiJet LSP can fit through narrow passageways on the way to the boiler room. The horizontal storage tank already comes as a separate component. ® With the MultiJet LSP, there is no need to worry about replacing your heating system. It is available in three output classes between 12 and 20 kW, each with a 150 l or 200 l horizontal storage tank.
The MultiJet ® with horizontal storage tank: best replacement for the Euro-3, the Mini-3 and the EuroLyt.
Von Alt zu Neu No modification work necessary, as the hot water tank connections are in the same or very similar positions. Very easy to connect to the heating fittings group. No new chimney opening required, as the flue gas ® connection on the MultiJet LSP is slightly lower than on the Euro-3 or Mini-3. The MultiJet ® LSP can fit through narrow passageways on the way to the boiler room.
In detail: Heat pump Belaria® hybrid SRM.
Gas boiler and heat pump working together Hoval has solved a dilemma: What do we use to replace a gas boiler in the era of renewable energies? Another gas boiler? Or rather a heat pump? The Hoval Belaria ® hybrid SRM heat pump combines both in one unit. It is also gentle on the environment and on your wallet. Switching to use two options, either individually or in ® combination? The Belaria hybrid SRM heat pump can do just that. The unit includes both an air/water heat pump and a gas boiler with energy-saving and low-emission condensing technology. To be more precise: the new hybrid heat pump ® ® features a Belaria SRM (8) and a TopGas combi (28/32).
the hybrid unit. In addition, there is an outdoor unit that extracts the energy from the fresh air. Another plus point: you can keep using your previous radiators, and there is no need to install complex and expensive underfloor heating.
In winter, at temperatures between about 0 and –8°C, it might no longer be possible for a heat pump alone to provide the temperature required for heating and domestic ® water. In this case, the Belaria hybrid SRM functions in hybrid mode, where the heat pump and gas boiler operate at the same time. If the temperature is warmer, the heat pump will easily manage the job by itself. But if it is even colder, the gas condensing boiler will take over operation completely.
Countries that are tightening their regulations and laws are now insisting on the use of renewable energy sources. In Switzerland, for example, the Mustervorschriften der Kantone im Energiebereich (MuKEn, model cantonal provisions in the energy sector) provide rules which state that existing residential buildings must also obtain energy from renewable sources following a heating system renovation. In Germany, the Renewable Energy Heat Act (EEWärmeG) prescribes renewable energy sources for new builds.
The Belaria® hybrid SRM is expected to be the simplest and cheapest renovation solution which also incorporates renewable energy sources for detached and semi-detached houses. Philipp Hasler Leader Produktmanagement Heat Pumps
35% more efficient than a single gas condensing boiler The hybrid mode (where the heat pump and gas boiler operate in parallel) is currently the only one of its kind on the market. Other units operate with either the heat pump or gas heating. The hybrid mode means that the gas boiler only starts operating on its own at a much later stage. In addition, the powerful heat pump is capable of supplying around 60–70% of the energy for room heating over the year. ® Therefore, the Belaria hybrid SRM is about 35% more efficient than a gas condensing boiler alone. The ideal solution for renovating your heating Hoval’s new gas-hybrid heat pump does not generally take up any more space than a conventional wall-hanging gas condensing boiler. It is therefore the perfect solution for renovations, where you can remove the old unit and connect
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Renewable energy sources for the benefit of the climate
® “The Belaria hybrid SRM is expected to be the simplest and cheapest renovation solution which also incorporates renewable energy sources for detached and semi-detached houses,” concludes Philipp Hasler, who heads the heat pump product management division at Hoval. Referring to the possibility of directly influencing the hybrid heat pump operating costs: “The user can choose between economic and ecological operation. For economic operation, they can store the current gas and electricity prices in the controller. The heat pump then selects the cheaper option depending on the operating condition. For ecological operation, the user can specify the outside temperature as of which the gas condensing boiler should take over from the heat pump.”
The first gas boiler that also cools ® The Belaria hybrid SRM offers a cool side effect (literally): combined with a fan coil or underfloor heating, it can also be used for cooling in summer.
The new Belaria ® hybrid SRM gas-hybrid heat pump does not generally take up any more space than a conventional wall-hanging gas condensing boiler. In addition, there is an outdoor unit that extracts the energy from the fresh air.
Renovated – and more economical than ever Kerstin Nitz and her husband live in a 19th century farmhouse. They have now combined something old with ® something very new: a Belaria hybrid SRM is hanging on the stone wall of their vaulted cellar. Mr and Mrs Nitz have some surprising reasons that explain their choice. Mrs Nitz, your house is located in the village of Weiler, 2 in the Austrian state of Vorarlberg. You share the 320 m living space with two other apartments that you rent ® out. What prompted you to purchase the Belaria hybrid SRM gas-hybrid heat pump? ® Kerstin Nitz: Our wall-hanging TopGas (24) gas boiler was built in 2003. It would probably have worked for a while longer, but when we heard about the Hoval gas-hybrid heat pump, we decided to renovate our heating system.
Sounds easy. Was it? Kerstin Nitz: Yes! All the connections had previously been equipped with flexible hoses. My husband and I insisted on having this flexibility this time as well so there was no need for any conversion work. And what requires more space? The old gas boiler or the new condensing boiler and air/water heat pump combination? Kerstin Nitz: The new solution is even smaller, which astonished us as well. We installed the outdoor unit for the heat pump under the balcony floor.
Getting your heat from renewable energy sources must do your conscience a lot of good! Kerstin Nitz: Due to the photovoltaic system on our roof which provides our electricity, we had a pretty clear conscience before as well. It was actually that system that ® tipped the scales in favour of the Belaria hybrid SRM. Why was that? Kerstin Nitz: We now have three energy sources to choose from for heating and hot water. Experts would call this a “trivalent system”. My husband has programmed the ® Belaria hybrid SRM controller so that our self-generated electricity is used before gas. Therefore, the heat pump operates on its own for longer than usual. The gas condensing boiler only switches on when the outside temperature is –6°C. And if it is a few degrees colder, all the heat is generated exclusively by the boiler. Have you already calculated your savings? Kerstin Nitz: We were already quite frugal because we used a heat pump – but only for hot water. Nevertheless, we should now be able to lower the operating costs by a further 20 to 25%.
In detail: Modul-plus calorifier.
Ensuring plenty of hot water Large buildings such as hotels and hospitals need large quantities of hot water. The cells of the Hoval Modul-plus calorifier are able to deliver these quantities. Since the calorifier was launched 50 years ago, more than 500,000 cells have been sold worldwide. And the latest generation represents another innovation.
It is precisely because the Modul-plus calorifier is extremely powerful that it requires very little space.
Investors and property managers appreciate technically sophisticated solutions that also reflect the latest state of the art. They need to be able to rely on these solutions and know that they operate efficiently. The latest generation of the Modul-plus calorifier distributed worldwide features even more insulation. Safety and reliability The system provides both safety and reliability: on the one hand, the Modulplus ensures that there is always
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enough hot water available. The external shape of the heating cells can be compared to the shape of a bottle, and each cell can hold 115 l of water. With its two cells, the smallest Modul-plus size offers 640 l of hot water per hour – enough to supply a building with seven apartments. The largest of the seven sizes has ten heating cells and can provide up to 17,500 l per hour – enough for over 100 apartments. The calorifier can be designed to precisely meet the calculated needs in each individual case.
In addition to the reliably high performance levels, there are the hygiene benefits: the water flows through the heating cells and there are no stagnation zones. This means that legionella bacteria have no chance of survival – also as a result of the high water temperature of at least 60°C. If legionella is inhaled in fine water particles, the bacteria can attack the lungs and lead to legionellosis. This illness, more commonly known as Legionnaire’s disease, kills between 10 and 20 people each year in Switzerland alone. Therefore, the Modul-plus
calorifier can provide vital protection, especially if it is combined with heating and control technology to form a safe and efficient complete system. And it is flexible to boot Expanding a hospital, residential complex or industrial facilities does not necessarily require a large investment for hot water – if a Modul-plus calorifier is already in use. The first calorifier can be supplemented with a second one, or the heating system (emphasis on complete system) can be set to a higher temperature. To take an example: a Modul-plus calorifier with three heating cells supplies the hot water for an apartment building c ontaining 25 apartments. Now let’s add another 10 apartments to the building. In order for all apartments to constantly have enough hot water, the flow temperature of the gas condensing boiler is increased from 70 to 80°C. In this case, the investment and material consumption for increasing the water heating capacity amount to zero. By selecting the right system
at the beginning, you can therefore increase its performance if required without any further expense. Little space, low-maintenance
with 12 units: the Modul-plus calorifier, launched in 1967, is more suitable than ever for large-scale buildings of any kind. Hoval uses it thousands of times a year.
It is precisely because the Modul-plus calorifier is extremely powerful that it requires very little space. Other calorifiers which also provide a whole day’s supply of hot water have a much larger footprint. As a result of its modest size, the Modul-plus can often be placed right next to the heating system.
Combined with other Hoval components, the Modul-plus helps to create a powerful, cost-saving and safe complete solution for hot water and room heating. Our Hoval experts are there to assist you with planning and design as well as with a possible expansion.
Due to the temperature differences from the heat exchange, the surface inside the heating cell expands and contracts again. This loosens the lime deposits which fall to the bottom of the cell, where they can be removed with a vacuum cleaner or broom. This simplifies maintenance.
Many advantages in a small space
Whether for a residential complex with 300 units or for an apartment block
The round heating cells of the Modul-plus can each hold 115 l. The smallest calorifier size provides 640 l of hot water per hour – enough for an apartment building with seven apartments.
The Modul-plus calorifier provides high performance levels, enables perfect hygiene, and offers flexible options for boosting performance even further – yet it takes up very little space. Hagen Jakubek, regional manager for heating technology for south-east Germany at Hoval, sums it up: “The Modul-plus combines all of our advantages for hygienic drinking water heating and efficient heat transfer in the smallest of spaces – and at the lowest possible maintenance costs.”
In detail: RoofVent RP / TopVent TP.
Ventilating, heating and cooling industrial halls – now completely decentralised Make a clean sweep with Hoval: even if you have already been enjoying the benefits of a decentralised indoor climate system for some time, there has been no way of avoiding a central plant room up to now. All that is about to change: Hoval is creating space in industrial and storage halls and combining the climate units with heat pumps.
The savings are so obvious that the Hoval system solution was really the only choice. Tobias Brugger Head of Product Management Indoor Climate Systems
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“When we talk about decentralised systems at Hoval, we are no longer thinking merely about indoor climate units,” says Tobias Brugger. These units are installed on the ceiling or in the roof, distributed throughout the space. The supply air and exhaust air ducts used for centralised systems are no ® ® longer required. “In the case of RoofVent and TopVent , we are now thinking about a decentralised heat pump as well,” explains the head of product management for indoor climate systems. “We have turned it into a complete solution.” Halls without a plant room When combined into a fully decentralised complete solution, the two units make a central cooling machine and central heating system redundant. This means that there is no need to include a plant room in the plans for a new hall, and pipes for heating and cooling systems are not required either. This in turn means pipes do not have to be fed through walls and insulated, and there are no lines to install below the ceiling. Summary: more freedom for architects and planners, more space for operators and users. On the inside of the building envelope, everything has been cleared away. As an additional advantage, the heat pump uses renewable energy. This minimises the CO2 emissions from the system – particularly in comparison to central heating solutions which use fossil fuels. Low total costs In addition to the fact that the investment costs are already relatively low as there are no ducts or pipes to install, the operating costs are also ultimately reduced. This keeps the total cost of ownership attractively low, not least because the ® ® RoofVent RP ventilation unit and TopVent TP recirculation air unit both communicate with their respective heat pumps – and coordinate with each other. The units all come from a single source and combine to form efficient and redundant systems.
Première in Austria The town of Hard in the Austrian state of Vorarlberg on Lake Constance is home to a branch of the Adler Modemärkte AG 2 fashion chain. The store measures around 2000 m and is one of the chain’s 183 branches across Europe. Every hour, 3 10,500 m of air needs to be replaced and recirculated. ® ® This is where the RoofVent RP and TopVent TP, each combined with a heat pump, had their première – and that ® was back in 2015. Two RoofVent units now cover the ® ventilation heat requirements while two TopVent recirculation air units look after transmission.
“The decentralised system proved such a success in terms of technology and costs that we are now producing it in series,” explains Tobias Brugger. It will be launched on the market in spring 2018. Tobias Brugger has done some precise calculations for the specific case in Hard: the annual operating costs have been cut by a full 36% – compared to a solution with a central gas boiler. “The savings are so obvious that the Hoval system solution was really the only choice.” For hall extensions as well An international technology company is already using ® the RoofVent ventilation unit coupled with a heat pump in its production plant in the Czech city of Liberec. 2 There are twelve systems on the roof of the 8000 m 3 extension, replacing 96,000 m of air per hour. In this case, the heat pumps – whose operation can be reversed – are only used for cooling. “When a hall is being extended,” says Tobias Brugger, “it is now no longer necessary to increase the capacity in the existing plant room in most cases. “The extra output required for ventilation, heating and cooling is provided by the decentralised systems.”
In detail: TopTronic® supervisor.
Peter Schatte, Head of Controller Product Management at Hoval: “We are greatly simplifying the system management process.”
A control system for everyone Operators of local and district heating networks use the TopTronic ® supervisor to visualise and optimise their networks. The Hoval control system is now an attractive solution for all those who manage many heat generators. This is what they were waiting for – housing cooperatives, contractors and property managers, who are responsible for operating numerous, technically diverse systems, can now visualise and monitor all their heat generators ® with the Hoval TopTronic supervisor control system. You only need to log in once “We are helping operators take a big step that will greatly simplify their system management processes,” says Peter Schatte, who heads the controller product management division at Hoval. “You only need to log in once to access all your systems,” he adds. Systems that are already equipped ® with the TopTronic E controller no longer need to be programmed. Programming each system individually was a laborious process and cost a lot ® of time and money. The TopTronic supervisor control system connects itself almost automatically and visualises
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the system on your PC screen. In addition, it helps to reduce the energy consumption and to increase the efficiency of each individual system, which can significantly shorten the payback period. For this reason, Peter Schatte also highlights the possibility of including older systems and third® party systems without TopTronic E in this monitoring process for a costeffective solution. And then you really do only need to log in once. Statistics at the touch of a button ® The TopTronic supervisor continuously records the data of all the connected systems. It supplies complete and customisable statistics at the touch of a button. Operators can also use the ® TopTronic supervisor to identify the potential for optimisation for individual systems and ultimately export the data directly into their accounting programs, for example for the annual financial statement.
High level of security guaranteed Peter Schatte highlights the high level ® of security that the TopTronic supervisor offers in every respect: “It is easy to commission, and can be used with any browser. At the same time, the connection is secure. The customer systems and data are very well protected, and the distribution of access rights to the systems is well regulated.”
In detail: TopTronic® E.
Operating your heating and ventilation with a single app If you are already controlling your heating with a TopTronic ® E, you can also do it via your smartphone. The only requirement is an online connection for the TopTronic ® E. In addition, your HomeVent ® comfort ventilation can now also be controlled via Hoval’s smartphone app. It is very easy to use this app. Do you want to turn up the heating in your holiday home so that the rooms are warm when you arrive? Or do you want to spontaneously change the daily programme – which is defined via the operating module in the house – because you need more hot water for a bath, for example? All it takes is an entry on your smartphone. ® Users can now also access their HomeVent comfort ventilation via the app: simply select the respective ventilation circuit to adjust both the ventilation speed and humidity level.
Short and sweet: in addition to heat for rooms and water, you can now also set the current demand for fresh, pleasant air while you’re on the go. It only takes a matter of seconds. The app displays the air quality in real time. The Hoval app is available for iOS and Android phones. You can download it for free from iTunes and the Google Play Store. According to one user, it’s “practical when you’re on the go”. With the app, you can check that your heating and ventilation are working properly at any time.
Now you can check the ventilation as well as the heating while you’re on the go with the Hoval app.
In detail: Heat pump Belaria ® dual AR (60).
The heat pump for larger buildings Air/water heat pumps are now suitable for apartment blocks, hotels, hospitals, schools and commercial/industrial properties thanks to Hoval’s launch of the Belaria ® dual AR (60) air/ water heat pump. With an output of 60 kW, it is currently the only unit of its kind capable of heating larger buildings. For applications that require an even higher output, up to three units can be connected in cascade. The Belaria ® dual AR (60) air/water heat pump, which combines two heat pumps in one housing, is the first to make the leap into this output class – and it delivers a solid, reliable performance. The two circuits are independent from each other, ensuring reliable operation. Furthermore, the output can be precisely adapted to the demand: if the full output is not required, only one of the two heat pumps will operate. This means that the unit works in a very targeted and efficient manner, which has a positive effect on the service life. Very quiet on the roof With a length of 3.27 m and a height of 1.50 m, the Belaria dual AR (60) is ideal for a flat roof. It is specifically designed to be used outside and is therefore extremely quiet for its output class. This is primarily due to the relatively large evaporator surface for harnessing energy. The larger the evaporator surface, generally the lower the noise levels. ®
and water even at an outside temperature of -20 °C. This is achieved by injecting refrigerant into the compressor using a special technique. This makes it possible to save power at low temperatures while still keeping rooms cosy and warm. Suitable for cooling too ® The Belaria dual AR (60) is a particularly good choice for office buildings: the cooling circuits of the two heat pumps also work in reverse, so they can be used for cooling in summer to keep offices air-conditioned and employees cool and comfortable.
Control technology that thinks for itself
Always enough heat
As an additional benefit, the unit – which is designed for ® outdoor use – is equipped with the Hoval TopTronic E ® controller as standard. This means that the Belaria dual AR (60) can be conveniently operated from a touchscreen inside the building.
In the case of conventional air/water heat pumps, the output drops beyond an outside temperature of -5 °C. Electricity ® has to be used to plug the gap. The Belaria dual AR (60), on the other hand, still provides sufficient heat for rooms
® The TopTronic E knows what the weather is going to do tomorrow and adapts operation accordingly in order to ® reduce operating costs. Furthermore, the TopTronic E makes it possible to operate up to eight units.
Belaria ® dual AR (60): two heat pumps, two independent circuits, one housing.
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In retrospect.
Calling for simple solutions Developing a simple solution is more challenging than designing a complicated one. But Hoval employees are happy to accept the challenge: “Simple solutions are crucial for both our end customers and partners as well as for our internal processes,” explains Peter Gerner in this issue’s editorial. However, the demand for simple solutions is not new. Peter Gerner is referring to the vision that Hoval started out with twenty years ago. And even as early as 36 years ago, when products, technologies and the product range were much more straightforward, Hoval’s company magazine “Hoval Blatt” had a similar message: “A manufacturer with a comprehensive portfolio is only successful if it is able to provide the customer with the right solution and all the corresponding services on site at short notice.” Nowadays, the situation is not as easy, and we cannot always conjure up the right solution during our first visit to the construction site. But the demand for simplicity remains – along with our employees’ ambition to fulfil their customers’ wishes.
IMPRINT „Insights” - the Hoval Group magazine Appears biannually at varying times. Responsible: Management Board/Marketing PUBLISHER: Hoval Aktiengesellschaft Austrasse 70 9490 Vaduz, Liechtenstein EDITING: Veronika Dialler/Andrea Schädler (coordination) Ernst Carli (design), Ursula Trunz (text) PRINTING: EBERL PRINT GmbH, Immenstadt i. Allgäu Printed on environmentally friendly paper. Online version available at hoval.com
Hoval Aktiengesellschaft
Austrasse 70 | 9490 Vaduz Liechtenstein www.hoval.com
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ENGLISH
Responsibility for energy and environment.