Power-generating heating system MF/1

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1 Power-generating heating system MF/1

2 Foreword

3 2/3 Combined heat and power generation for a high level of independence When looking at the distribution of energy consumption in Germany it soon becomes apparent that the heating sector has an important part to play in the energy transition. Accounting for approximately one third of energy consumption, heating offers enormous potential to cut back on the use of fossil fuels. As a result, both decentralised and combined heat and power generation are now high on the agenda. In future, the power-generating heating system will also come into play when renewables such as wind and insolation are offline. Intelligent efficiency: the heating system that also generates power Viessmann does not need any prompting, as the company is always seeking new solutions. "Power" is the keyword when it comes to generating and using power on site. For this, for example, we offer an efficient solution based on the principle of microgeneration, i.e. the intelligent combination of heat and power generation (CHP). We have refined this technology especially for detached and two-family houses the Vitovalor PT2 fuel cell heating appliance supplies energy efficiently while conserving resources. Greater independence with a power-generating heating system A power-generating heating system produces heat and power when and where required with no transportation losses or excess capacity. In combination with a photovoltaic and a power storage system, it is possible to enjoy a self-sufficient power supply summer and winter. For a high degree of independence and for climate protection.

4 Energy savings Double the savings: generate heat and power simultaneously Gas condensing boiler and fuel cell module in one appliance. Generate both heat and power simultaneously and reduce your energy bills by up to 40 percent. With a power-generating heating system, you get double the use of the energy spent. The heat produced almost as a by-product during power generation is used for central heating and DHW heating. This significantly lowers your energy bills and protects the environment. With the Vitovalor PT2 fuel cell heating appliance, you have a highly efficient system that has been perfectly designed for detached and two-family houses. Generate up to 85 percent of your own power The powerful Vitovalor PT2 fuel cell heating appliance covers the base load of the power demand for a detached or two-family house. You only draw power from the grid at peak times. In combination with a photovoltaic system and power storage unit, you can achieve up to 85 percent independence from external power supply utilities. Maximum energy efficiency on the smallest of footprints: the compact Vitovalor PT2 requires just 0.72 square metres of floor space. Prioritising independence: storing power for later use Power-generating heating systems from Viessmann produce sufficient power for a family of four. They often even generate more than required. Where that is the case, the surplus is simply stored in the Vitocharge power storage system to be drawn upon later. You will find more detailed information on power storage units from page 12. Lower your energy bills On-site power generation puts you on the fast track to savings. After all, by using power generated on site you can considerably lower your electricity bills and give ever rising electricity prices the cold shoulder. In fact, you can even earn money by exporting power to the grid if you generate more than you use. Sample calculation: annual saving from power generation with the Vitovalor PT2 Assuming a cost of 2.31 cents for each kwh of power generated on site, you save: 25 ct/kwh If put to best use, one fuel cell can generate 18 kwh of power per day (6200 kwh/year). Power generation of 4000 to 4500 kwh is assumed in a "typical" detached house 4200 kwh (max kwh possible) Approx. 60 percent of the power generated on site can now be used in this "typical" detached house. This amounts to: 2520 kwh x 0.25 per kwh = 630 p.a. 630 (max to 1550 achievable with 100 % on-site consumption) From exporting power, we get: 1680 kwh x 0.05 per kwh = Annual energy bill savings 714 Simple calculation, clear benefits: a power-generating heating system is a worthwhile investment. This calculation illustrates the average savings achievable with a Vitovalor PT2 in a new build.

5 4/5 Generate power and store it efficiently. Viessmann offers perfectly matched systems for this. So that you can then use the power you generate when you need it such as for your electric car. The ideal combination for greater independence and lower energy costs 1. Vitovalor PT2 With up to 30.8 kw, this fuel cell heating appliance delivers sufficient thermal output to cover the heat demand of a detached house. And the electrical energy generated each day (up to 18 kwh) is enough to satisfy the demands of an average household. The benefits for new builds Lower your future energy bills Save up to 714 in energy costs each year Achieve up to 85 % independence with a CHP system, small photovoltaic system and power storage system 2. Power storage unit Vitocharge power storage units store selfgenerated power. This is then available later when it is needed. The modular design enables flexible sizing of the storage unit as required. 3. Photovoltaics In addition, high performance photovoltaic systems generate power from free solar energy. With their fully assembled modules, this system impresses through reliability and a long service life. The benefits for modernisation projects Enjoy greater independence from ever rising electricity prices Lower your future energy bills Save 700 to 900 in energy costs each year Achieve up to 85 % independence with a CHP system, small photovoltaic system and battery storage unit Improve your energy performance certificate rating

6 Subsidies/Services Investing made simple: through attractive state subsidies In Germany, power-generating heating systems have long been recognised as an efficient, futureproof form of technology, which is why they are eligible for attractive state subsidies. Public subsidies 11,100 Comprehensive and clear: subsidy and application guidelines In the subsidies and applications guide, you will find all necessary forms for approvals and subsidies for your power-generating heating system. You will also find information about which applications must be lodged and by when, in order to meet all necessary requirements for the subsidy. The guide is available online at Fully prepared and ready to go: applications to power supply utilities and BAFA The CHP bonus is deducted directly from your electricity bill, so applications need to be sent to your power supply utility before and after commissioning. All applications, required evidence and the maintenance log in the Viessmann guide are valid throughout Germany and have been completed for you, so all you need to do is send them off. The guide also contains step-by-step instructions on completing the electronic registration form for the Federal Office for Economic Affairs and Export Control (BAFA). Benefits year after year: electricity subsidy and energy tax rebate The total amount of electricity must be reported to the utility by 31 December each year. It is worthwhile as the subsidy according to the German CHP Act is 8 cents/kwh for power exported to the grid and 4 cent/kwh for power consumed on site. Furthermore, under the energy tax law (EnergieStG), your energy tax payments are refunded to you at the end of the year. You'll find all the necessary information and forms in the guide. Germany's state governments and power supply utilities also offer numerous subsidy programmes. A complete overview and detailed information can be found on the internet at or by asking your Viessmann trade partner. Practical tips As a power generator, you can register as a small business. Discuss this with your tax adviser. Save 19 % VAT Count on it: the online Viessmann subsidy database shows you which subsidies are available for your location.

7 6/7 Advice and access to sales, installation and customer service support: Viessmann trade partners receive regular training and have in-depth knowledge of our products. Expertise that you can benefit from, too. With our trade partners, you're in good hands Viessmann is the only manufacturer to supply all products from a single source, so that users can make effective and economical use of the power they generate. Your Viessmann trade partner will be happy to advise you in more detail, and not just on the technical options. They will also calculate the subsidies according to your particular setup and help you research funding options and complete application forms. Services from your trade partner Free, no-obligation and individual consultation, even on site Calculation of the actual power, heating and DHW demand in your household or property Clear calculation of savings on heating costs and power Calculation of the payback period, after which the new Vitovalor PT2 will have paid for itself through energy savings Support with applying for subsidies Ask your Viessmann trade partner about our service packs as well.

8 Fuel cell heating appliance Vitovalor PT kw el, 0.9 to 30.8 kw th

9 8/9 A fuel cell heating appliance generates both heat and sufficient power for your home. This form of dual energy efficiency is achieved without the use of fossil fuels and so protects the environment and natural resources. Fuel cells convert natural gas into power and heat. However unlike with conventional systems, this does not involve the burning of fossil fuels. Instead, a chemical process known as "cold combustion" is used, in which hydrogen reacts with oxygen to produce power and heat. Proven, reliable, durable: technology from Viessmann and Panasonic As with all innovations from Viessmann, reliability and durability are also top priorities when it comes to the fuel cell heating appliance. This is why a proven fuel cell module from Panasonic is used. Viessmann has integrated this fuel cell, proven in tens of thousands of applications in Japan, into a perfectly matched heating system with gas condensing boiler, DHW cylinder and control unit. This makes the Vitovalor PT2 fuel cell module a sustainable investment, ensuring long runtimes with a service life of more than 80,000 operating hours. Innovative heating system for modern residential buildings The Vitovalor PT2 is perfect for well insulated detached and two-family houses with a low heat demand. The fuel cell heating appliance works particularly efficiently at low return temperatures, for example, when used with underfloor heating. However, even radiators with return temperatures of up to 50 C are suitable. Natural gas: perfect for fuel cells The fuel cell uses hydrogen as its energy source. Hydrogen is sourced from natural gas, which is available almost everywhere in our infrastructure. E or LL gas can be used as required. An upstream reformer converts the natural gas into the essential hydrogen. The heat generated as a by-product of power generation is utilised efficiently for both DHW and central heating. The compact fuel cell heating appliance provides a household with heat, covers the entire power demand and, whilst doing so, saves up to 40 percent energy compared to the separate generation of heat and power. The technology creates greater independence from rising electricity prices and protects the environment at the same time by reducing CO 2 emissions by up to 50 percent compared to separate power and heat generation. Energy efficiency label A ++ for the Vitovalor PT2

10 Fuel cell heating appliance Vitovalor PT2 Fuel cell module: 0.75 kw el, 1.1 kw th Total output: 0.9 to 30.8 kw th Thanks to an increase in thermal output to 30.8 kw, the new generation of the fuel cell heating appliance, the Vitovalor PT2, offers more flexibility and application options. The compact Vitovalor PT2 requires a footprint of only 0.72 square metres. The front-mounted control unit and pre-installed components for hydraulics and sensors complete the package. With the new 7 inch colour touchscreen, operation is considerably easier. The unit has an integral 220 l stainless steel DHW cylinder. Ideal for detached and two-family houses Up to a heat demand of 25,000 kwh per year and an annual power demand of up to 6200 kwh, the Vitovalor PT2 offers sufficient power for a detached or two-family house. The maximum amount of electrical energy generated over the course of the day (up to 18 kwh) is enough to cover the basic needs of an average household. The Vitovalor PT2 produces power for up to 45.5 hours without interruption. Following this, the fuel cell regenerates for 2.5 hours and is then available again to produce power. The integral gas condensing boiler switches on automatically when the heat generated by the fuel cell module is insufficient, such as at peak times or when a lot of hot water is required for a brief period. Anticipating your needs: self-learning energy manager The fuel cell heating appliance has a bias towards producing heat and has been optimised for power generation. The integrated energy manager is adaptive and responds to your individual requirements. This means that it only starts the fuel cell heating appliance when it is worthwhile, i.e. when sufficiently long runtimes, and therefore corresponding power generation and on-site utilisation, are expected. 10 year guarantee* 1 on stainless steel heat exchangers for oil or gas condensing boilers up to 150 kw * For conditions and product overview, see Vitovalor PT2 1 Gas condensing boiler to cover peak loads 2 Control unit for weather-compensated operation with a large colour touchscreen 3 Fuel cell module l stainless steel DHW cylinder

11 10/11 High performance on a small footprint: the Vitovalor PT2 requires just 0.72 square metres of floor space. Take advantage of these benefits Fuel cell module: 0.75 kw el, 1.1 kw th Peak load boiler: 11.4/19.0/24.5/30.8 kw th High DHW convenience through stainless steel DHW cylinder: 220 l capacity Innovative futureproof technology Efficient, environmentally responsible and futureproof technology (reduction of CO 2 emissions by up to 50 % compared to conventional heat and power generation) Ideally suited to use in new builds and existing detached and two-family houses Parallel generation of power and heat to minimise electricity costs Simple and rapid installation due to fully integrated hydraulics (similar to gas condensing boilers), only one flue system required Integrated system separation through plate heat exchanger and internal indirect coil ensures safe and robust operation Integral electricity, gas and heat metering determination (to provide billing information for state subsidies and energy tax rebates) High operating convenience via remote control, tablet or smartphone using the Vitotrol app Operation possible with E and LL gas Subsidies of up to 11,100

12 Power storage system Vitocharge Vitocharge power storage system: your declaration of independence from the power grid Combined heat and power generation often produces more electricity than a detached house needs at any particular time. The Vitocharge power storage system is therefore an ideal supplement. Generating power Generate heat Store power With the Vitocharge power storage system, self-generated power is available when needed. Prioritising independence: storing power for later use Power-generating heating systems from Viessmann produce sufficient power for a family of four. They often even generate more than required. Where that is the case, the surplus is simply stored in the Vitocharge power storage system to be drawn upon later. You currently receive up to 0.11/kWh for electricity exported directly to the grid, and pay up to 0.28/kWh for electricity drawn from it. It therefore makes great economic sense to store self-generated power. Viessmann offers power-generating heating systems and the power storage system from a single source. This means that all components are perfectly matched to one another and work with great efficiency and reliability. Short payback period, long service life: you can't go wrong Vitocharge battery modules are designed for a service life of more than 6000 charging cycles. Assuming an on-site consumption rate of over 80 percent, the payback period is less than ten years. You can then benefit from virtually free, self-generated power for a long time to come.

13 12/13 Modular storage system Different power generators and varying power consumption requirements mean that power storage units must be available in a range of sizes. This is why the Vitocharge power storage system is modular in design. A single unit can accommodate up to four battery modules, each with a storage capacity of 3.2 kwh up to 12.8 kwh in total. They are particularly straightforward to install. The battery modules slot in like drawers and start up automatically. High capacity As a single phase power storage system, the Vitocharge is designed to optimise cost effective on-site consumption. In combination with the Vitocharge, the Vitovalor PT2 provides backup during power failures. In this scenario, the system switches to mains substitution mode and continues to supply all of the electrical appliances in the home. Large and clearly laid out: the display The large screen in the programming unit displays various symbols that provide information at a glance on prevailing charging and operating conditions. One feature of particular interest to users is the display that shows when they have achieved selfsufficiency, i.e. their home is supplied without drawing additional electricity from the public grid. When this occurs, the screen shows mains consumption as 0.0 kw. Perfect team: complement the installation with a photovoltaic system As less heat is required in summer, less electricity is generated as well. In order to remain as independent of the public power grid as possible, the ideal solution is to integrate a PV system. This will cover the entire power demand in summer. The Vitocharge has a storage capacity of up to 12.8 kwh. Take advantage of these benefits Greater independence from power supply utilities and rising electricity prices Lower electricity bills thanks to optimised consumption of power generated on site Continued supply during power failure with mains substitution mode (changeover box required as an accessory) Straightforward installation thanks to preassembled unit Battery modules are simply slotted into place (Plug & Play) Individual configuration, ideal supplement to existing energy systems Charging infrastructure for electric vehicles Everything you need to know at a glance: for example, the display screen shows when power generated on site makes your home fully independent of the public grid.

14 System examples Modernised existing building Built in: 1981 (modernised: 2012) Building type: two-family house, EnEV 2012 [Germany] Living space: 270 m 2 Annual heat demand: 25,000 kwh Annual power demand: 4200 kwh Previous heat generator: Vitola (oil) Heat transfer type: underfloor heating, radiators, convectors Two residential units supplied Straightforward heat distribution Even with a mix of heat transfer types, such as underfloor heating, radiators and convectors, straightforward heat distribution is still ensured in Dennis Wagner-Noll's two-family house thanks to the Vitovalor 300-P. Energy efficient modernisation of an older building Built in: 1960 (modernised: 2009) Building type: detached house Living space: 140 m 2 Annual heat demand: 20,000 kwh Annual power demand: 2400 kwh Previous heat generator: Vitoladens 300-T Solar DHW heating Heat transfer type: radiators Instead of just heat, now heat and power While modernising their detached house built in 1960, the Rothe family replaced the oil boiler with a more efficient fuel cell heating appliance and now also generate their own power.

15 Specification Vitovalor PT2 14/15 Type E11T E19T E25T E32T Rated heating output (60/40 C) kw th Electrical output of fuel cell W el * Thermal output of fuel cell kw th * Frequency Hz 50 Sound power level db(a) Electrical efficiency of fuel cell % 37 Overall efficiency of fuel cell % Up to 92 (H i ) Thermal efficiency of peak load boiler % Up to 98 (H s ) Stainless steel DHW cylinder l 220 Fuel Dimensions excl. flue system Length (depth) x width x height Complete unit Standard unit Tower cylinder mm mm mm Natural gas E(H) / LL(L) 595 x 1200 x x 600 x x 600 x 1800 Minimum required room height (incl. flue system package) mm 2000 Weight Complete unit Standard unit Tower cylinder kg kg kg Space requirement m Energy efficiency class Heating DHW heating, draw-off profile XL A ++ A + * Output data: standard values to EN 50465

16 System technology Everything from a single source Photovoltaic system Fuel cell heating appliance Mechanical ventilation unit Power storage system Vitovalor PT2: maximum efficiency in a perfectly matched system. A perfect match: system technology The convenient controls and perfectly matching Viessmann system technology offer you maximum reliability, flexibility and efficiency. "The whole is greater than the sum of its parts." In accordance with this philosophy, Viessmann does not simply supply individual heating equipment components that meet the high Viessmann standards for quality, reliability and effectiveness. In addition, all products are part of a matching overall concept, where all components complement one another. After all, only perfect interaction between all system parts can draw out the maximum potential of our innovative leading technology. Viessmann system technology includes everything that characterises a reliable and economical heating system: the control unit with wireless remote control, efficient Vitocell DHW cylinders for the highest DHW convenience, and radiators.

17 16/17 Connectivity With Vitoconnect and a smartphone, controlling Viessmann heating systems couldn't be easier. Heating systems can be controlled with the ViCare app. All apps are available for mobile terminal devices running under ios or Android operating systems. Remote monitoring With special Viessmann remote monitoring software, your heating contractor can access your heating system quickly via the internet. This saves time and money on maintenance and service. Photovoltaic systems Turn the sun into your energy supplier for electricity. This is worthwhile, as solar power can already be generated at significantly lower cost than drawing domestic power from the grid. DHW cylinders DHW convenience for every demand: Viessmann offers plenty of choice with its Vitocell range of cylinders. Here, you will find exactly the right DHW cylinder to suit your requirements depending on water demand and installation options. System accessories In addition to the high quality Viessmann products, we also offer system components from other well known manufacturers with the Vitoset range of accessories. Radiators, pumps, expansion vessels, pipework, filters and valves the Vitoset range has everything you need to equip your heating system. You benefit because everything matches and can be combined into a single system that meets your individual requirements. Further information on system accessories can be found here.

18 Viessmann Group

19 18/19 The company Viessmann is one of the leading international manufacturers of efficient heating, industrial and refrigeration systems. Acting in a sustainable manner As a family business Viessmann takes the long view and places great value on acting responsibly; sustainability is firmly enshrined in the company s principles. For Viessmann, sustainability in action means striking a balance between economy, ecology and social responsibility throughout the company, meeting current needs without compromising the quality of life of future generations. With its strategic sustainability project, Viessmann demonstrates at its own head office in Allendorf (Eder) that the energy and climate policy goals set by the German government for 2050 can in fact be achieved today with the help of commercially available technology. The Viessmann comprehensive range As environmental pioneer and technological trailblazer for the heating sector, Viessmann has for decades been supplying exceptionally clean and efficient systems for heating, refrigeration and decentralised power generation. Many of the company s developments are recognised as heating equipment milestones. Practical partnership As part of its comprehensive range, Viessmann also offers a wide selection of complementary services. These services include a comprehensive training and further development programme for trade partners at the well equipped training facilities of the Viessmann Academy. With its new digital services, Viessmann offers innovative solutions such as the operation and monitoring of heating systems by smartphone. Users benefit from greater reassurance and convenience, whilst contractors can keep a constant eye on the systems for which they are responsible. German Sustainability Award for Production/Brand/Resource Efficiency Energy Efficiency Award Viessmann Group Company details Established in: 1917 Employees: 12,000 Group turnover: 2.25 billion euros Export share: 54 percent 23 production companies in 12 countries 74 countries with sales companies and branches 120 sales offices worldwide The comprehensive product range from the Viessmann Group Boilers for oil or gas Combined heat and power generation Hybrid appliances Heat pumps Wood combustion technology Facilities for producing and reconditioning biogas Solar thermal Photovoltaics Electric heating and DHW systems Refrigeration systems Accessories

20 Viessmann Werke GmbH & Co. KG D Allendorf (Eder) Telephone +49 (0) Fax +49 (0) Your trade partner: GB 04/2018 Copyright Viessmann Duplication and alternative use only with prior written consent. Subject to technical modifications.