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Viessmann combined heat and power generation system:efficient power and heat generation forsingle-family homes, large residential buildings, commerce, industry, and municipal authorities

Viessmann has extended its product range for combined heat and

power generation and ISH 2015 sees it presenting

- Vitovalor 300-P – the first fuel cell unit to enter mass

production. This innovative system produces both heat and

electricity at the same time in an exceptionally

environmentally friendly solution, thus decreasing the

owner's dependence on the public power network.

- The Vitotwin 300-W and Vitotwin 350-F micro CHP

systems based on a Stirling engine can now be operated

using the Vitotrol app on a smartphone or tablet PC. There

are also new storage concepts available for Vitotwin 300-W

to adapt to different system configurations as required.

- The new, wall-mounted electricity storage systems for

micro CHP systems Vitovalor 300-P, Vitotwin 300-W and

Vitotwin 350-F can increase use of self-generated

electricity and minimize the purchase of expensive mains

electricity.

- The new CHP unit Vitobloc 200 EM-530/660 has now been

added to top Viessmann's range of gas engine combined

heat and power generation units.

Vitovalor 300-P: fuel cell unit for environmentally friendly power and heating supply for single- and two-family homes

With Vitovalor 300-P, Viessmann has pioneered fuel cell

technology that is now available for environmentally friendly

generating power and heat in single- and two-family homes. The

device was honored with the renowned f-cell award, presented by

the Baden-Württemberg Ministry of the Environment, Climate

Protection and the Energy Sector as part of the Fuel Cell

Innovation Awards last October.

Energy cost savings up to 40 percentViessmann developed a combined heat and power generation

system in a joint venture with Japanese-based Panasonic. When

using this system, the owner can save up to 40 percent energy

costs and reduce CO2 emissions by about fifty percent compared

with a gas condensing boiler or conventional purchase of mains

electricity. This power-generating heating system produces up to

15 kWh during the course of the day, enough to cover most

household power requirements. The unit increases independence

from the public power supply and reduces the cost of expensive

electricity from the grid accordingly.

The heat produced when power is generated in the fuel cell is

used for heating or DHW generation. An integrated gas

condensing boiler switches on automatically when heat demands

are greater.

Fuel cell already installed in more than 50,000 locations in JapanThe fuel cell module is a PEM fuel cell (polymer electrolyte

membrane fuel cell) run on natural gas, which Panasonic has now

installed at over 50,000 locations in Japan. It is designed to offer a

lifespan of at least 60,000 operating hours, which corresponds to

around 10 years. Viessmann has integrated this technology into a

compact, complete system with a peak-load gas condensing

boiler, buffer and DHW cylinders, and system controls.

Installation as for compact gas condensing boilersVitovalor 300-P consists of two units – the fuel cell module and

peak load module, which can be transported separately and

require floor space of just 0.65 m2. Both modules are fully pre-

assembled, which makes fitting easy and ensures short installation

times. Fitters only need to connect the natural gas supply, an

exhaust gas/intake air line, heating flow and return lines, and

drinking water pipes. The fuel cell unit is thus just as easy to install

as a Viessmann compact gas condensing boiler. Fitters then only

need to connect to the electric mains to obtain power or to feed the

generated power into the grid.

Maintenance-free desulfurizationA two-year maintenance interval is quite sufficient for the gas

condensing boiler. The fuel cell also only needs to be serviced

every two years. Maintenance tasks are limited to air and water

filter replacement, which takes just a few minutes. The fuel cell's

natural gas desulfurization system is maintenance-free.

Attractive subsidy optionsThe fuel cell unit is subsidized by the German government as a

particularly energy-efficient future technology. As a result, owners

receive a total of 3,515 euros (base and bonus incentive) as an

investment grant from the German Federal Office of Economics

and Export Control (BAFA). Furthermore, there are numerous

regional incentive programs that subsidize purchases. Detailed

information, a full summary of the various incentive options, and

application forms are available online at www.vitovalor.de.

Owners also receive 5.41 euro cents for each kWh generated as

stipulated by the German Combined Heat and Power Generation

Act. Energy tax on fuel cell gas consumption is reimbursed at the

end of the year. The electricity, gas, and heat meters required to

ensure compliance with requirements are already integrated into

the unit. This saves homeowners additional costs of more than

2,000 euros that they would normally need to pay to have the

meters installed themselves.

Advantages for market partners- Easy, quick installation ("Plug & Power") due to pre-

assembled components

- Only an exhaust system is required; no additional water

connection is needed for fuel cell operation.

- Efficient operation at peak load thanks to the integrated gas

condensing boiler

- Simple to transport in two parts; footprint of just 0.65 m2

- Accessories from the existing wall-mounted gas boiler

range can be used for hydraulic and exhaust gas supply air

system.

Advantages for owners- CO2 emissions reduced by up to 50 % compared to

centralized electricity generation and decentralized heat

generation

- Up to 40 % savings on energy costs and less dependence

on increasing electricity prices

- Integrated electricity, gas, and heat meters to calculate

state electricity subsidy and energy tax reimbursement

- Low-noise operation as with gas condensing boilers since

there are no moving parts in the fuel cell module

- Remote operation and monitoring of current power

generation data and maintenance information on

smartphone or tablet PC

- Reliable, time-tested technology – the fuel cell module has

been used in Japan for seven years; now installed in over

50,000 locations

- Reliable due to maintenance agreement with performance

and function-related guarantee for all key components

Technical specificationsFuel cell module:

- Electrical output 750 W

- Thermal output 1 kW

- Electrical efficiency: 37 % (Hi)

- Overall efficiency: 90 % (Hi)

Peak load gas condensing boiler:

- Thermal output: 5.5 to 19 kW

- Utilization rate: 98 % (Hs)

AvailabilityThe fuel cell heating unit Vitovalor 300-P powered with natural gas

is available now.

Vitotwin 300-W and 350-F: heat and power supply for upgrading older systems

The micro CHP units Vitotwin 300-W and Vitotwin 350-F are

equipped with Stirling engines and integrated peak load gas

condensing boilers, which makes them ideally suited to cover the

basic electricity load and fully cover the heating needs when

single- and two-family homes are modernized. Vitotwin 300-W is a

micro CHP system for space-saving installation on walls. The floor-

standing compact device Vitotwin 350-F also features an

integrated 175-liter heating water buffer cylinder. The optional

Vitotrol app now also permits remote operation of both units

anytime and from anywhere. What's more, new storage designs

provide even greater flexibility in their application options.

Modulating Stirling engineVitotwin 300-W and 350-F are the only micro CHP units in the

world to feature a Stirling engine which can be operated in

modulating mode. The engine delivers an electric output between

0.6 and 1 kW. Due to demand-oriented output modulation, the

Stirling engine thermal output is between 3.6 and 5.3 kW. This

ensures long running times, during which inexpensive power is

produced. The Stirling engine’s overall efficiency can reach up to

96 % (Hs).

Integrated gas condensing technology for peak loadsCombined with the time-tested MatriX gas burner and the rust-free

stainless steel radial heat exchanger, the integrated gas

condensing boiler delivers additional heat to cover peaks in heat

demand on very cold days and provides instant DHW heating. The

Stirling engine and gas condensing boiler can be run on natural or

liquid gas. The total heat output from Vitotwin 300-W or

Vitotwin 350-F is 26 kW.

Power as requiredVitotwin 350-F has a power demand function that allows

householders to use inexpensive, self-generated power for

temporary increases in electricity demand to run appliances such

as a washing machine. The user simply presses the corresponding

button on the wireless remote control or the designated icon on the

Vitotrol app on their smartphone and the Stirling engine produces

electricity irrespective of the current heat demand. Alternatively, an

individual program can also be set on a timer. An optional wireless

remote socket can be conveniently used to ensure that electricity

requirements are met automatically.

Remote monitoring via Vitotrol appIn addition to the wireless remote control included in the package,

there is the new, optional Vitotrol remote control app for

smartphones and tablet PCs, which provides optimum

convenience. It can be used to monitor and operate up to three

heating circuits. Users can now make settings in heating

programs, adjust target values, and access system information

from any place at any time. Pictograms are used to assist with

controls and the system can be operated intuitively.

New storage designs – a suitable solution for every applicationThe wall-mounted unit Vitotwin 300-W is easy to operate with its

small, space-saving heating water buffer cylinders or combination

cylinders. This is why there are now new storage concepts

available.

The combination between a heating water buffer and separate

DHW generation is eminently suitable for upgrading projects

thanks to their optimum versatility. The new heating water buffer

cylinder Vitocell 140-E (Type SEIB) has a 400-liter capacity for

storing heating water and was developed specifically for the micro

CHP unit. A DHW cylinder of any size or the fresh water module

Vitotrans 353 can then be installed for DHW generation.

Vitotrans 353 is available in three output versions (25, 48, and 68

liters per minute) for on-demand DHW generation.

The new combination cylinder Vitocell 340-M with a capacity of

400 liters is a highly compact solution for new buildings and

upgrading older ones. Drinking water is heated in a stainless steel

corrugated pipe, where it is heated by heating water in a

continuous flow process.

Attractive promotion programThe two new cylinders comply with the German Federal Office of

Economics and Export Control (BAFA) subsidy requirements

applicable since January 1, 2015. This allows homeowners to

receive financial support of up to 2,375 euros for systems fitted

with Vitotwin 300-W or Vitotwin 350-F. 5.41 euro cents are also

received for each kilowatt hour of power generated as per the

German Combined Heat and Power Generation Act. Moreover, the

energy tax on fuel cell gas consumption is reimbursed at the end

of the year. The electricity, gas, and heat meters required to

ensure compliance with requirements are already integrated into

units.

Simply one gas connection and one exhaust gas lineUnlike micro CHP systems with combustion engines, Vitotwin units

require just one gas connection (natural gas E, LL, or liquid gas)

and one exhaust gas line. As a result, there is no additional

installation outlay, ensuring lower installation costs for

homeowners.

Flow balancing can increase system efficiency by up to 15 percent.

The optional, TÜV-certified (German technical supervisory

association) Vitoflow measurement procedure can be used to

perform hydraulic balancing in an automated process. System

hydraulics can be optimized in less than hour with no specialist

knowledge required and within a very short period of time.

Servicing the units is just as easy as installing them. The Stirling

engine is completely maintenance-free, requiring neither filters nor

lubricant, since all moving parts are in a hermetically sealed

enclosure containing helium.

Advantages for market partners- Easy transport as delivered in three sections (Vitotwin 350-

F)

- No extra work for installation and maintenance compared

to compact gas condensing boilers (maintenance-free

Stirling engine)

- No additional metering systems needed thanks to

integrated meters (electrical, gas, heat)

- Easy to install thanks to ready-to-use external component

assemblies

- Effortless servicing thanks to ready access to all

components requiring maintenance

- Remote monitoring possible with Vitocom

Advantages for owners- Less exposure to fluctuating electricity prices thanks to own

power-generating capability

- Attractive subsidy program

- Targeted use of self-generated power thanks to on-demand

power by pressing a button or using a timer or wireless

remote sockets

- Integrated meters for electricity, heat, and gas reduce

installation costs and permits German Federal Office of

Economics and Export Control (BAFA) incentives or energy

tax reimbursement without customer needing to supply own

meter

- Various options for operation using wireless remote control

(included in delivery), Vitodata or Vitotrol app

Technical specificationsStirling engine:

- Electrical output: 0.6 to 1.0 kW

- Thermal output: 3.6 to 5.3 kW

- Electrical efficiency: 15 % (Hi)

- Overall efficiency: 96 % (Hs)

Peak load gas condensing boiler:

- Thermal output: 6.0 to 20 kW

- Utilization rate: 98 % (Hs)

AvailabilityThe new Vitotrol app for the micro CHP systems Vitotwin 300-M

and 350-F will be available from April 2015. The new heating water

buffer cylinder Vitocell 140-E and the new combination cylinder

Vitocell 340-M will also be launched onto the market in April 2015.

Wall-mounted electricity storage system for power grid independence

The new electricity storage system (type LAA) allows operators of

photovoltaic systems, Vitovalor 300-P micro CHP systems,

Vitotwin 300-W, and Vitotwin 350-F to use a greater proportion of

their self-generated power in their own home, thus minimizing

purchase of expensive power from the grid. This reduces energy

costs and creates greater independence from public supply

networks and trends in energy costs.

Furthermore, micro CHP system owners with electricity storage

systems have no worries when there are power outages in the

public power supply. The storage unit can supplement the power

generated by the micro CHP system in such cases. Independent,

off-grid network operation is even possible for residential housing

that is not connected to the public power grid, such as vacation

homes.

Cutting-edge cell technology for more than 5,000 charging cyclesThe compact electricity storage system features state-of-the-art

lithium-ion cell technology. This permits a discharge depth of

90 percent, which is significantly higher than in other comparable

storage units. With a storage capacity of up to 5.5 kWh, 4.95 kWh

of electrical energy is available for use. The integrated battery

management system regulates charging and discharging

processes automatically, thus extending cell lifespans. The unit is

designed to last a minimum of 5,000 charging cycles, thus

ensuring trouble-free storage operation for up to 20 years.

Simple installationWeighing just 62 kilograms, the electricity storage system is very

light and easy to transport. Compact dimensions and an attractive

design ensure it can be easily integrated into living spaces.

Familiar components such as inverters, switchover boxes to switch

between mains electricity and storage or CHP electricity, and plug-

and-play configuration ensure that the system is quickly and easily

installed. It is also simple to retrofit into existing systems or

combine with photovoltaic systems.

Advantages for market partners- Appealing supplement to micro CHP systems

- Fast, easy installation thanks to an integrated system with

existing components, such as inverter and plug & play

functionality

- Robust, maintenance-free technology

- 10-year warranty

- Suitable for combination with photovoltaic systems in

addition to micro CHP units

- Can be retrofitted into existing systems

Advantages for owners- Financial benefit thanks to greater use of self-generated

electricity and reduction in costs due to purchasing

electricity from the grid

- More reliable because of available backup during power

outages

- Independence – off-grid network operation is possible in

combination with Vitotwin 300-W/350-F (for buildings

without mains connection).

- Future-proof investment due to high number of cycles and

expected 20-year service life

- Low space requirement thanks to high storage density

- Can be integrated into living areas because of its attractive

design

Technical specifications- Storage capacity: 0.55 to 5.5 kWh

- Usable energy output: 4.95 kWh

- Charging cycles: > 5,000

- Weight: 62 kg

AvailabilityThe Viessmann Vitovolt LAA electricity storage system is available

from April 2015.

Vitobloc 200: new CHP unit with 530 kW electrical output

With an electrical output of 530 kW and thermal output of 660 kW,

Vitobloc 200 EM-530/660 completes the selection of gas engine-

powered combined heat and power generation units (CHP unit)

available in the upper range. This model now brings the total

number of CHP units available with outputs between 6 and 530 kW

to eleven. This means that there is an ideal module size available

for every use.

Most compact CHP unit in its performance classUnlike other CHP units in this performance class, the new

Vitobloc 200 EM-530/660 components, such as the exhaust gas

heat exchanger, the plate-type heat exchanger, catalyzer, and

lubricating oil tank are integrated with the housing. With a footprint

of a little more than 13 cubic meters, it is the most compact unit on

the market and takes up very little room and vertical space.

Flexible operating modeThe new CHP unit can be operated with both heat and gas. The

electrical output can be continuously modulated between 50 and

100 percent of the nominal output. It can also be used for

emergency power operation in addition to parallel processing

mode. The CHP unit is equipped with starter batteries for this

purpose. This means that the CHP unit can be started up in the

event of a mains power failure and is then capable of supplying

electricity to the system.

Stable degree of efficiency over entire service life Specially conceived for stationary operation, the turbocharged 12-

cylinder engine drives a synchronous generator. Its design and

moderate engine load ensure long maintenance intervals, a long

lifespan, and a stable degree of efficiency over the entire service

life. It also guarantees a high level of operational reliability and

thus largely retains its value.

Quality assured thanks to factory testingEach individual CHP unit undergoes extensive testing on a test

bed before dispatch. All designated performance values are

checked and documented to ensure consistent high quality in each

CHP unit shipped.

Certificate in compliance with medium-voltage network guidelinesCHP unit users are required to present a certificate for mains

connection. This document ensures that generating facilities only

feed in power that complies with the power network operator's

requirements. Like all Viessmann CHP units, the new module also

holds the full unit certification which complies with the German

Federal Association of the Energy and Water Industry (BDEW)

guidelines.

Moreover, the synchronous generator also features automatic

network adaptation for the phase shift (cos-φ). The system is

adjusted to the power grid using parametrization in the software or

based on signals directly from the power network operator. This

means that all requirements are met for easy connection to the

power grid.

Low planning and installation outlayThe CHP unit is delivered ready for operation. Planning and

installation is thus reduced to a minimum.

Advantages for market partners- Low planning and installation outlay

- Always fulfills the power network operator's connection

conditions

Advantages for owners- Requires the least amount of space in its performance

class

- Flexible operating mode

- Reliability in supply thanks to default mains replacement

function

- Consistent electrical efficiency throughout life cycle

- Easy registration with the network operator using a unit

certification in compliance with BDEW guidelines

Technical specifications- Electrical output: 530 kW

- Thermal output: 660 kW

- Output modulation: 50-100 %

- Electrical efficiency: up to 39.5 %

AvailabilityThe new Vitobloc 200 EM-530/660 module is available to order

now.

Comprehensive range of products for all fuel sources

Combined heat and power generation systems are a permanent,

integral part of Viessmann's comprehensive range of products.

The range also offers customized solutions with efficient systems

and outputs between 1.0 and 120,000 kW for all application areas

and all fuel types. These include wall-mounted condensing boilers

with an output between 1.9 and 150 kW and floor-standing

condensing systems between 1.0 and 6,000 kW. Viessmann

provides a 10-year warranty against leaks due to corrosion for the

stainless steel radial heat exchangers in gas and oil condensing

boilers and micro CHP systems, (www.viessmann.de/garantie).

Also part of this impressive portfolio are systems for renewables

including solar thermal systems with flat-plate and vacuum tube

collectors for DHW generation, auxiliary heating, and process heat

generation, biomass boilers from 2.4 kW to 50,000 kW for wood

logs, chips, and pellets, heat pumps from 1.7 to 2,000 kW for use

with geothermal heat, groundwater or ambient air, and photovoltaic

systems.

Viessmann also supplies everything from a single source for local

heating networks and bioenergy villages – from initial feasibility

studies and detail engineering through to the delivery of all

necessary components, such as biogas systems, heat generators,

CHP modules, geothermal piping and residential transfer stations,

and construction and commissioning.

Comprehensive services portfolioFurthermore, Viessmann supports their market partners with a

comprehensive services portfolio. This includes a flexible logistics

concept, a customer-oriented service concept from its Technical

Service Department, the needs-based Viessmann Academy

training program, campaign-related promotional material, the

online portal, and guaranteed sales thanks to brand presence at

winter sports events.

Images / captions

Image 1: With Vitovalor 300-P, Viessmann is the first

manufacturer to bring a mass-produced fuel cell unit onto the

European market.

Image 2: The new storage system designs for Viessmann's micro

CHP units Vitotwin 300-W and 350-F save space and offer even

greater flexibility for use.

Image 3: The new, wall-mounted electricity storage system by

Viessmann enables owners of micro CHP systems Vitovalor 300-

P, Vitotwin 300-W, and Vitotwin 350-F to reduce their need for

expensive grid power.

Image 4: Viessmann's new CHP Vitobloc 200 EM-530/660 unit

requires just slightly over 13 m3 of space, making it the most

compact unit in its performance class on the market.

March 2015