RENEWABLES INTEGRAL VENTILATION SYSTEMS Optimum efficiency using every bit of energy Efficient building services control systems for maximum convenience in the smallest of spaces 02 2018
STIEBEL ELTRON is full of energy As a family company driven by innovation, throughout product development and manufacture we maintain a clear focus on environmentally responsible, efficient and convenient building services for your home. Because we're full of energy and ready to shape the future! The future belongs to environmentally responsible and efficient building services. Since 1924 we have been developing highly efficient products and maintain a clear focus on electricity as our primary energy source. Electricity which nowadays is increasingly obtained from renewables. We rely on over 3100 employees around the world and their expertise at every stage of development from the initial design right through to the manufacture of the final product. The result efficient and innovative solutions for domestic hot water, heat, ventilation and cooling. With our extensive product range, we always have the right option to prepare your home for the demands of the future today. At our head office in Holzminden, Germany, we have also established a clear focus on green technology with the Energy Campus, our flagship project for sustainable construction which makes careful use of resources. This training and communication centre brings together high quality architecture and communication technology. And as a Plus Energy building, it generates more energy than it consumes. This is in keeping with our brand promise "Full of energy" and creates a space where the spirit of STIEBEL ELTRON can be experienced both in theory and practice.
Integral ventilation systems 02 03 Electricity the energy source of the future Renewable energies will become the norm for the future of energy supply as more and more people recognise the benefits of green and self-generated power from renewable sources. The goal of the energy transition is independence from fossil fuels Fossil fuels are in decline on the electricity market too harmful to the climate and ever more scarce. Nowadays, alternative energies using the sun, wind and water are being used to generate green power. So it is only logical to act in good time to convert the largest energy consumer in your home the heating system to these futureproof forms of energy. As nearly 80 % of energy consumed in the home is used for heating and hot water, this makes perfect sense. So there is plenty of scope for implementing the energy transition in your own home.
Those who manage energy efficiently simply go further. The better you do this, the more you have left over for the other things in life. In our home, the LWZ saves us a lot of energy. We get ventilation, room heating, DHW heating and cooling from a single system.
Integral ventilation systems 04 05 Everything a house needs: our integral systems Heating system, DHW cylinder, ventilation system, maybe even an oil tank and lots more besides. Rooms used to house building services are usually expected to look no more than serviceable. How wonderful, then, when one neat appliance can provide everything imaginable in terms of home comfort. The LWZ integral system series from STIEBEL ELTRON offers a 4-in-1 solution that is both attractive and compact. Up to four functions one appliance Automatic ventilation with heat recovery of up to 90 % of the thermal energy Room heating via highly efficient, integrated heat pump technology DHW heating with an integrated 235 l cylinder Optional cooling function with high energy efficiency 4 in 1 The LWZ series offers up to four central building services functions in one appliance. For a unique level of integration. The LWZ, with its extremely small footprint, ensures first class comfort and first rate efficiency. Ventilation STIEBEL ELTRON s advanced ventilation system keeps the heat inside your home. It recovers up to 90 % of the heat that would otherwise be lost through open windows. Room heating The integrated air source heat pump draws the heat for the heating function from the outdoor air, simply and efficiently, achieving high output levels even at low temperatures. DHW heating Some of the heat drawn from the outdoor air is also used for DHW heating. A large DHW cylinder with excellent insulation ensures low heat losses and a high level of convenience. Cooling By simply reversing the refrigerant circuit, the LWZ 504 and 304/404 SOL models also enable active cooling, ensuring a fresh ambience in the summer.
First class ambience with outstanding ventilation management More and more developers are finding that well insulated buildings are key to meeting current insulation requirements. They are also attracted by the benefits of low heating and energy costs and a high level of comfort within the home. With very high insulation of the building envelope, heat losses and therefore the heat load are kept to a minimum. The more insulated and airtight the building, the more difficult it is to achieve the natural exchange of air needed to prevent the build-up of moisture and mould, and protect the building fabric. CO 2 levels also rise if there is little air exchange. Consistently high air quality Energy efficient ventilation through heat recovery Particularly beneficial for allergy sufferers Excellent ventilation management in new build plays a key role in ensuring a healthy indoor environment. LWZ integral appliances from STIEBEL ELTRON have been specifically designed to meet these requirements. Advanced LWZ ventilation systems are passive house certified in some cases and provide intensive ventilation, effortlessly and efficiently. The fully automatic ventilation system adjusts the supply of fresh air independently according to actual humidity levels, thereby recovering up to 90 % of the heat that is otherwise lost through ventilation. Comparison of inverter technology Uncomfortable Comfortable room temperature Precisely adjusted heat generation While conventional heat pumps only know two states of operation: full output or none, the LWZ 504 integral appliance, with its integrated inverter-controlled air source heat pump, matches its output precisely to the current heat demand. If we compare this to a car, it is like being able to regulate the speed rather than simply going at full throttle or braking. As in the example of a car, when the inverter-controlled heat pump adjusts its energy usage, it not only operates more quietly, but also runs more smoothly and efficiently. Uncomfortable Set value Inverter Stop-start appliances
Integral ventilation systems 06 07 Comparison of sound pressure levels Quietly impressive With their outstanding sound insulation, the LWZ 504 and LWZ SOL models are among the quietest ventilation appliances on the market. Depending on the model, the inverter technology used also ensures even lower noise emissions. Rustling of leaves Library LWZ 504 Conversation Noisy street 0 10 20 30 40 50 60 70 80 db(a) EXCELLENT ENERGY EFFICIENCY Our integral ventilation systems are rated up to A++/A++ for very good energy efficiency (flow temperature 55 C/35 C). ENERGY EFFICIENCY A++/A++ INTEGRAL VENTILATION SYSTEMS Page 08 Page 10 Page 11 Page 12 PREMIUM PLUS TREND Model LWZ 504 LWZ 304/404 SOL LWZ 304/404 Trend LWZ 304/404 flex Energy efficiency class A++/A++ A+/A+ A+/A+ A+/A+ Maximum system efficiency with the following functions: room heating ventilation DHW heating 1) Integral cooling function ISG-capable option for on-site PV power consumption Option for integration of solar thermal Fast, efficient DHW heating and reduced heating costs with inverter technology Heat recovery up to 90 % High air quality Sound-optimised appliance casing Air preheating Heated living space 2) up to 250 m 2 up to 180/225 m 2 up to 180/225 m 2 up to 180/225 m 2 1) In combination with an external DHW cylinder. 2) For heat load, note assumption of e.g. 40 W/m² heat load/air volume design.
Integral ventilation systems 08 09 LWZ 504 No other model can beat the LWZ 504 when it comes to efficiently and elegantly combining the following four functions: ventilation, room heating, DHW heating and cooling. A unique achievement, which has only been made possible by the intelligent use of state of the art inverter technology. CONVENIENCE TIMES FOUR PLUS ONE-OFF EFFICIENCY Impressive technology with sound-optimised casing Covering a floor area of just over one square metre, the LWZ 504 not only meets many of the requirements for real convenience, but is also remarkably quiet. The inverter technology and, most notably, the sophisticated sound insulation of the appliance take care of this. Technology that goes further The LWZ 504 can be combined with solar thermal and photovoltaic systems. This ensures more efficient operation and, additionally, provides for almost complete independence from rising energy prices thanks to the power generated through the photovoltaic system. Benefits for your home Compact appliance with ventilation, room heating, DHW heating and cooling functions 10 % faster DHW heating and up to 18 % lower heating costs with inverter technology Easy, intuitive operation of all functions Extremely quiet thanks to comprehensive sound insulation Also available as balance sets with optimised humidity protection through automatically regulated extract air vents PREMIUM Model LWZ 504 233514 Energy efficiency class A++/A++ DHW heating energy efficiency class (load profile), moderate climate A (XL) Output at A2/W35 (EN 14511) kw 5.16 Coefficient of performance at A2/W35 (EN 14511) 3.74 Heat availability level up to % 90 Air flow rate m³/h 80-300 Cylinder capacity l 235 Height mm 1885 Width mm 1430 Depth mm 812 Weight kg 442
LWZ SOL STRONG ON CONVENIENCE, SMART ON PRICE The LWZ SOL is an excellent choice for those who refuse to compromise on comfort, but do not need efficient inverter technology. Room heating, ventilation, DHW heating and cooling 1) are again combined in one compact appliance. Can be combined with any form of solar backup system Efficiency can be quickly and effectively increased with solar backup. The LWZ SOL is ready for anything, be it a combination with a photovoltaic or solar thermal system. Either option can be integrated into the system with little effort. 2) LWZ 304/404 SOL Benefits for your home Compact appliance with room heating, ventilation, DHW heating and cooling functions 1) Sound-optimised casing for quiet operation Prepared for solar backup Simple, intuitive operation with plain text display Passive house certified appliance (LWZ 304 SOL) PLUS Model LWZ 304 SOL LWZ 404 SOL 230143 230144 Energy efficiency class A+/A+ A+/A+ DHW heating energy efficiency class (load profile), moderate climate A (XL) A (XL) Output at A2/W35 (EN 14511) kw 4.32 6.38 Coefficient of performance at A2/W35 (EN 14511) 3.40 3.50 Heat availability level up to % 90 90 Air flow rate m³/h 80-300 80-300 Cylinder capacity l 235 235 Height mm 1885 1885 Width mm 1430 1430 Depth mm 812 812 Weight kg 424 442 1) Additional components may be required for this function. 2) LWZ 304 SOL passive house certified.
Integral ventilation systems 10 11 LWZ Trend Room heating, ventilation and DHW heating the LWZ 304 and 404 Trend can handle all of the most important tasks in a detached house. Thanks to the ventilation function, both models recover up to 90 % of the heat that would otherwise be lost through ventilation. SIMPLY IMPRESSIVE: THREE FUNCTIONS IN ONE APPLIANCE Impressive price and performance Among the integral systems from STIEBEL ELTRON, the LWZ 304 and 404 Trend represent particularly attractively priced models. High grade components combined with a good level of efficiency provide the optimum solution for any new build. LWZ 304/404 Trend Benefits for your home Compact appliance with room heating, ventilation and DHW heating functions High efficiency thanks to heat recovery during ventilation Simple, intuitive operation with plain text display Attractively priced combination for a pleasant level of comfort Large DHW cylinder offers high DHW convenience TREND Model LWZ 304 Trend LWZ 404 Trend 233254 233255 Energy efficiency class A+/A+ A+/A+ DHW heating energy efficiency class (load profile), moderate climate A (XL) A (XL) Output at A2/W35 (EN 14511) kw 4.32 6.38 Coefficient of performance at A2/W35 (EN 14511) 3.40 3.50 Heat availability level up to % 90 90 Air flow rate m³/h 80-230 80-300 Cylinder capacity l 235 235 Height mm 1885 1885 Width mm 1430 1430 Depth mm 725 725 Weight kg 360 365
LWZ flex MEETS INDIVIDUAL DHW REQUIREMENTS The LWZ flex can be combined with any external DHW cylinder for a detached house. This provides great flexibility when deciding on the size and location of the DHW cylinder for greater DHW convenience that s tailored to you. Efficient technology rounds off the package The integral air source heat pump provides efficient heating, whilst the central ventilation system ensures a good air quality. The high grade technology used in the LWZ flex is complemented by the contemporary new STIEBEL ELTRON design. Benefits for your home Compact appliance with ventilation and heating functions Simple, intuitive operation via touch wheel with matrix display Energy saving heat distribution thanks to integral high efficiency pump Can be combined with 300 l or 400 l DHW cylinder for greater DHW convenience TREND Model LWZ 304 flex LWZ 404 flex 235268 235269 Energy efficiency class A+/A+ A+/A+ Output at A2/W35 (EN 14511) kw 4.32 6.38 Coefficient of performance at A2/W35 (EN 14511) 3.40 3.50 Heat availability level up to % 90 90 Air flow rate m³/h 80-230 80-300 Height mm 1885 1885 Width mm 808 808 Depth mm 725 725 Weight kg 235 235
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Accessories DISCOVERING POSSIBILITIES Our extensive range of accessories allows all of our appliances to be customised to meet your personal requirements for tailor-made convenience. These adaptations can range from the control unit of a single appliance to a complex system STIEBEL ELTRON offers everything from a single source. This means that all components are perfectly matched, which helps to prolong their service life, the result being a solution that lasts and lasts. For further information on our extensive range of accessories for your STIEBEL ELTRON products, see www.stiebel-eltron.de or speak to your local trade partner. Ventilation grilles Fresh air and design combined with style An optimum indoor environment is ensured not only through the LVE and LVS distribution systems, but also through the corresponding ventilation grilles. The rectangular air grilles are ideal for floor outlets in the supply air area and are particularly stable in form when it comes to installation in the floor. The round air grilles with integral air filter are particularly suitable for wall mounting in the supply air area. Wall or ceiling mounting in the extract air area is also an option. All air grilles are available in different designs and in either plain white or brushed stainless steel. Ventilation controller For convenient operation The FES Comfort for the LWZ integral appliances enables comprehensive operation from the comfort of your living room, utilising intuitive user prompts on the plain text display.
Integral ventilation systems 14 15 Energy management Suitable accessories make STIEBEL ELTRON products capable of communicating to create an intelligent energy management system. By networking heat pumps, storage technology and other building service appliances, the proportion of self-generated photovoltaic power consumed on site can be significantly raised, which in turn improves the overall level of energy efficiency. Internet Service Gateway ISG ISG plus With the ISG, the heat pump system can be conveniently controlled from a PC, tablet or smartphone via STIEBEL ELTRON SERVICEWELT, it can also be controlled while away from home. The optional extensions for KNX IP, Modbus IP and the link-up to the SMA Sunny Home Manager (EMI) provide for intelligent functional enhancement. The ISG plus can link your heat pump to variable power tariffs which may become available in the future, and to your photovoltaic system, to maximise the utilisation of power generated on your roof. The SMA Sunny Home Manager works in tandem with the ISG to ensure truly intelligent energy management. It forecasts power-based demand and yields so as to best provide electrical consumers and cylinders with PV power. A wall mounted e-mobility charging station can also be integrated. The ISG forecasts demand for the required thermal energy, taking into account the thermal stores available in the building. With this efficient, cost effective approach, economical PV power can be stored thermally.
Your local trade partner: Have we sparked your interest? For further information, see www.stiebel-eltron.com or consult your local trade partner. STIEBEL ELTRON International GmbH Dr.-Stiebel-Strasse 33 37603 Holzminden Germany Tel. +49 5531 7020 Fax +49 5531 702479 Email info@stiebel-eltron.com www.stiebel-eltron.com Legal notice Although we have tried to make this brochure as accurate as possible, we are not liable for any inaccuracies in its content. Information concerning equipment levels and specifications are subject to modification. The equipment features described in this brochure are non-binding regarding the specification of the final product. Due to our policy of ongoing improvement, some features may have subsequently been changed or even removed. Please consult your local dealer for information about the very latest equipment features. The images in this brochure are for reference only. The illustrations also contain installation components, accessories and special equipment that do not form part of the standard delivery. Reprinting of all or part of this brochure only with the publisher s express permission. Issue 02_18 327762_BÖ_0.6_02_18_MEHR Irrtum und technische Änderungen vorbehalten.