Kob Brochure Web

8/9/2019 Kob Brochure Web

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Pellets

Pellets are the most compact form of wood

energy and require the smallest storage

capacity. High calorific value.

Sawdust

Untreated sawdust from sawmills, joineries

and wood-processing facilities.

Mixed wood

Unprocessed mixture of woodchips

and sawdust.

Maximum size: G50.

Woodchips

Shredded, untreated wood, with or without

bark. Large storage capacity required.

Maximum size: G50.


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What you should know

What types of wood can be used?

Kb wood heating systems can be operated

using a wide variety of untreated, high-quality

wood fuels that differ in terms of their calorific

value, required storage capacity and costs

(see page 5).

The type of fuel you choose depends primarily

on the amount of storage capacity available,

the facility's requirements and the availability

of that type of fuel in your area. Since the

quality of the fuel influences the efficiency

and life expectancy of your system, you

should choose good-quality untreated wood

with a low moisture content.

How economical is wood heating?

With a biomass system, approximately 50%

of the total operating costs are accounted for

by fuel costs. Therefore, choosing a high-

performance wood boiler and using high-

quality, affordable wood fuel are both crucial

when it comes to optimising the economy of

your system.

Although the initial outlay for a biomass

system can often be greater than for a

conventional heating system, the savings

made on fuel costs mean that the total cost

of ownership can be less than that for fossil

fuels. So your biomass system works at leastas economically as a heating system for fossil

fuels. However, as your fuel source is home-

grown and independent, your fuel costs will

fluctuate less severely in comparison with

conventional fuels.

Is wood heating safe?

Absolutely. Today's wood heating systems are

just as safe and reliable as the leading oil and

gas heating systems. Equipped with advanced

safety and protection features and digital

control, the system is closely and extensively

monitored and regulated from the supply of

fuel to the heat transfer and ventilation.

Do wood heating systems provide clean

combustion?

Yes! Advanced wood heating systems

achieve similar emission ratings to leading

heating systems for fossil fuels. What's more,

heating with wood is CO2neutral. Kb wood

heating systems meet the strict regulations

set out by the European Anti-Pollution Act.

Where can wood heating systems be used?

Kb wood heating systems are ideal for

commercial and industrial use, such as in

schools, hospitals, district heating networks,

wood-processing plants, etc. They supply

either the entire heating energy for your site or

the base load if it is being operated together

with an oil/gas boiler for peak loads. Thanks to

our comprehensive range of products, you can

expand your biomass system to create a fully

integrated system with Viessmann solar, oil/

gas boilers and individual control technology

(see page 11).


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PYROT

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1 Charging auger (with light barrier)

2 Moving grate

3 Primary air butterfly valve

4 Flue gas return feed

5 Ignition fan

6 Ash removal

7 Secondary air butterfly valve with

rotary fan

8 Rotation combustion chamber

9 Dual heat exchanger

10 Safety heat exchanger

11 Pneumatic pipe cleaning

12 Induced draught fan

Wood boilers with state-of-the-art

technology

With its patented rotation combustion,

the Pyrot boiler is a state-of-the-art wood

combustion system. A charging auger

continuously guides the wood fuel onto a

moving grate on which the fuel gasification

takes place (with a carefully regulated

primary air supply). The combustible gases

then rise up into the rotation combustion

chamber, where they are mixed with

secondary air using a rotary fan. This ensures

complete combustion.

Clean and efficient combustion

The advanced combustion technology in the

Pyrot achieves similar emissions ratings as

those of an advanced gas combustion system

and keeps the release of CO, NOxand dustparticles to a minimum.

Furthermore, unlike oil and gas, wood is a CO2

neutral renewable source of energy. When

operated together with our digital, modulating

output control, the Pyrot boiler achieves an

efficiency level of up to 92%.

Containerised mobile heating centre

(silo as a pellet store)

The Pyrot wood boiler can be available as a

ready-to-use solution in a container for uses

where there are no boiler enclosures available

or where the on-site construction costs have

to be reduced to a minimum. This ready-to-

use solution incorporates the pre-assembled

boiler inside a special container (see page 5)

and all ancillary devices. Individual container

solutions can be specially adapted to meet

your needs.

Innovative wood boiler with rotation combustion, 90 to 480 kW.

For wood fuels with a maximum water content of 35%.


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PYROTEC

1 Slide valve with barrier layer

2 Combustion retort with internal

grate and primary air 1

3 External grate with primary air 2

4 Moving burnout grate

5 Secondary air

6 Ignition fan

7 Ash removal

8 High temperature zone for

complete burnout

9 Combustion chamber door

10 Three-pass boiler (3.0 or 6.0 bar)

11 Safety heat exchanger

12 Pneumatic pipe cleaning

Grate combustion at its best

The Pyrotec boiler uses an underfeed stoker

with a downward external grate and a moving

burnout grate, thereby achieving the best

possible combustion results. A charging auger

guides the wood fuel into the combustion

chamber, where it is pre-dried and degassed

using an accurately controlled primary air

supply (grate combustion). On the external

grate and moving burnout grate, the fuel is

completely degassed. Accurately controlled

secondary air is blown in to ensure complete

combustion of the fuel. In doing so, the

heat is released into the boiler's triple pass

heat exchanger.

Top quality design and construction

The Pyrotec boiler is a top quality construction

for use under the toughest conditions. Theinside of the combustion chamber is fitted

out with high quality firebricks for greater

durability. All grate elements are made of

high quality, thick walled cast chromium steel

and can withstand the highest temperatures.

The Pyrotec boiler has a classic triple pass

heat exchanger for maximum heat transfer

and efficiency.

Clean and efficient combustion

The advanced combustion technology in the

Pyrotec achieves similar emissions ratings as

a modern gas combustion system and keeps

the release of CO and NOxto levels that

correspond to those of an advanced heating

system for fossil fuels. Furthermore, unlike

oil and gas, wood is a CO2neutral, renewable

source of energy. When operated together

with our digital, modulating output control,

the Pyrotec boiler achieves efficiency levels

of up to 92%.

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Wood boiler with state-of-the-ar t grate firing, 390 to 1 250 kW.

For wood fuels with a maximum water content of 50%.


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Benefits at a glance

High efficiency due to advanced combustion technology, triple pass

heat exchanger and modulating output control (modulation range 4:1)

Maximum heat transfer due to triple pass heat exchanger

High efficiency and extremely low emissions thanks to accurately

controlled primary and secondary air

Easy maintenance due to fully automatic ash removal, optional

pneumatic cleaning system and flue gas scrubber

Advanced safety devices ensure safe and reliable operation

Maximum system output due to high performance construction and

supply of all system components from one source

Automatic ignition device prevents idling and saves fuel (option only

for fuels with water content of less than 40%)

Individual planning of your facility by our team of experts

Firebrick lined combustion chamber with external grate and

moving burnout grate

Specification

Fully automatic wood boiler with grate combustion

5 models from 390 to 1 250 kW

For wood fuels with a maximum water content of 50%

Efficiency: up to 92%

Maximum operating pressure: 6 bar

For specification, see page 14.

Pyrotec boiler with charging auger and automatic fire

extinguishing safety system


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Fully automatic and low maintenance

Automatic ash removal(option)

The clean combustion leaves only the

minerals contained in the wood behind as ash.

A moving grate removes the ash from the

combustion chamber and guides it into the

ash container. As soon as they have cooled

down, the ash removal conveyor moves the

ash into a large external container.

Pneumatic cleaning system(option)

A clean heat exchanger is crucial to the life

expectancy and efficiency of a boiler. With

short blasts of compressed air, the pneumatic

pipe cleaning system regularly removes ash

from the heat exchanger, thereby considerably

prolonging the maintenance free operation of

the boiler.

Flue gas return system(Standard for Pyrot, option for Pyrotec)

Flue gas with low oxygen content (6-8%), is

mixed with primary air to ensure the complete

combustion of the fuel. This enables a low

grate temperature, which leads to greater

efficiency of the boiler. In addition, particle

emissions are reduced and the grate's service

life is increased.

Flue gas scrubber(option for pyrot)

The flue gas scrubber minimises dust

emissions by filtering the flue gases froma multicyclone arrangement. It is supplied

completely insulated with a flue gas fan

on the side or the top and a 240 litre ash

container. An 800 litre container is also

available as an option.

(Only necessary for fuels with a high fine particle content,

such as waste wood from wood processing facilities or

woodchips with a fine particle content of > 4%.)

Ash removal conveyor and external ash

container

Pneumatic cleaning system

Flue gas return feed

Flue gas scrubber for compliance

with strict dust emission

requirements

A comprehensive range of system components from a single source for the reliable and

smooth operation of the entire system.


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Comprehensive energy management

Advanced boiler control units for biomass

systems offer the same control convenience

as most standard control units for fossil fuel

systems. Thanks to its modulating output

control and buffer cylinder, the system's flow

temperature can be perfectly adjusted to suit

the weather conditions.

Ecotronic boiler control unit(for Pyrot)

The digital, modulating output control ensures

optimum combustion by accurately controlling

the relationship between the combustion

air, returned flue gas and fuel. The control

unit monitors:

the flow and return temperature of the

boiler

the condition of the firebed

the depth of fuel on the grate

the flue gas temperature

the oxygen content in the flue gas

(Lambda probe)

Pyrocontrol boiler control unit(for Pyrotec)

Fully programmable modulating output and

system control. This boiler has variable speed

control on all fans.

the flow and return temperature of the

boiler

the depth of fuel on the grate

the under grate pressure sensor for reliable

furnace draught the flue gas temperature

the combustion chamber (upper

temperature limit)

the oxygen content in the flue gas

(Lambda probe)

Buffer cylinder

With a biomass system, a buffer cylinder

is an important component for optimum

control accuracy (ability to adapt the system

output to the actual demand). The buffer

cylinder makes it easier to stratify the water

in temperature layers, effectively reduces

frequent cycling of the combustion system

Ecotronic boiler control unit for Pyrot

Boiler control unit for Pyrotec

and adapts the system's flow temperature

to exactly meet the heat demand. With

all control units, there are three or five

sensor inputs available for optimum

burner modulation in accordance with the

temperature of the buffer cylinder.

Vitocontrol multi-boiler control unit

Customer-specific control unit for the

cascading and rotation of two Pyrot or Pyrotec

boilers and the energy management of the

other integrated energy sources (solar, oil/

gas, electric). Controls a common storage and

supply system and provides an interface for

building management systems.

Remote monitoring(option)

Remote monitoring and maintenance of

heating systems via an internet interface.

Enables the monitoring and adjustment

of various system parameters. The

interfaces LonWorksand BACnetfor

local monitoring are available as an option

(further interfaces on request). Ideal for

monitoring systems in public facilities or for

communal/CHP systems.

All control units for biomass

systems are made in-house.

Other benefits are ...

Quick installation with all

functions in one control unit

Simple operation

Modulating high-tech output control for maximum and safe performance of the

heating system.


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Cellar storage with auger discharge

Cellars or former oil storage rooms can be

converted into pellet stores without any major

work. Pellets can be blown across large

distances and special augers transport them

reliably and with low energy consumption.

Pellet stores must be 100% dry.

Bunker with rotating fuel extraction

This is the right solution for square or slightly

rectangular bunkers. An articulated arm

pushes the fuel onto a delivery conveyor.

Bunker with push-floor delivery

Ideal for large, rectangular storage bunkers.

Sliding hydraulic push rods guide the fuel onto

a supply auger. This enables quick filling with

large amounts of fuel.

Silo with funnel

The fuel is supplied from the silo via a

pendulum auger in the funnel safely thanks

to the automatic reversing action. A fire tested

rotary feeder separates the silo from the

heating system. This system is recommended

for wood processing facilities.

Storage and supply systems

Blower air feed systems in interior rooms

Filling small bunkers from above

Filling large bunkers from above

Silo extraction for wood processing operations

All Kb wood heating systems have ...

High-performance augers with large diameter

Spur geared motors for high torque

Large, optimised supply channels A certified device for effective fire protection

Every fuel store and supply system is unique and was constructed for a specific

application. Our advanced, fully automatic supply solutions are delivered ready

for installation.


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Push-floor installation

Reignition protection

Security against reignition through flying

sparks. Permanently present and monitored

barrier layer and permanent, monitored

negative pressure operation.

Burn-back resistant device

A sensor situated in the fuel charging pipe

recognises the danger of burn-back and

immediately counteracts this by increasing the

amount of fuel being charged into the boiler.

Burn-back protection device

A horizontally acting slider with spring return

interrupts the fuel supply in the event of a

power failure and the risk of burn-back. When

there is negative pressure in the fuel store,

a rotary air lock is used in place of the slider

for the same function. The rotary air lock

prevents unwanted leakage air getting into the

combustion process.

Safe and reliable operation

Safety heat exchanger

A safety heat exchanger built into the boiler

is connected to a mains cold water supply

and prevents the boiler from overheating in

the event of a power failure. A non-electric,

thermally activated valve is triggered at

a predetermined boiler temperature and

cools the boiler water down via indirect heat

transfer through the heat exchanger.

Additional safety devices

In addition to the listed safety devices, the

Kb wood boilers can be also equipped with

all safety devices as required by relevant

safety standards.

Low water shutdown

Pressure and temperature sensor

Limited safety temperature

Kb wood heating systems meet the strictest safety requirements.

High-tech safety equipment using state-of-the-ar t technology guarantees

safe and reliable operation of your system at all times.


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Specification

Model Pyrot 100 Pyrot 150 Pyrot 220 Pyrot 300 Pyrot 400 Pyrot 540

Output kW 90 135 200 270 360 480

Efficiency 90% - 92%

Max. operating pressure 3 bar

Dimensions Length 2 192 2 442 2 466 2 822 2 806 3 034

(mm) Width 1 050 1 050 1 330 1 330 1 570 1 570

Height 1 765 1 765 2 024 2 024 2 262 2 332

Weight kg 1 958 2 198 3 024 3 433 4 438 5 108

Model Pyrotec 390 Pyrotec 530 Pyrotec 720 Pyrotec 950 Pyrotec 1250

Output kW 390 530 720 950 1 250

Efficiency 90% - 92%

Max. operating pressure 6 bar

Dimensions Length 3 269 3 237 3 877 3 835 4 380

(mm) Width 1 238 1 380 1 380 1 612 1 612

Height 2 382 2 702 2 834 3 035 3 230

Weight kg 4 650 6 945 8 244 10 653 12 083

PYROT

Boiler with rotation combustion

For wood fuels with a water content of < 35%

PYROTEC

Boiler with grate combustion

For wood fuels with a water content of < 50%


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Perfectly matched to suit your system

1 Viessmann bespoke

control panel2 Solar thermal system

3 Wood heating system

4 Condensing boilers

5 Low temperature boiler

6 DHW cylinder

7 System distribution

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Wood boilers are ideal for integrating with one

or more sources of energy, such as fossil fuels

or solar thermal energy. Our comprehensive

range of products offers heating systems

for all forms of energy, designed to form

seamlessly integrated heating solutions.

Whether it is an oil/gas boiler or a solar

thermal system, all parts fit together perfectly

and form a reliable and economical system.

High performance solar thermal systems

Our high performance solar thermal systems

with flat-plate or vacuum tube collectors are

ideal for the supply of DHW and as central

heating backup for your biomass system.

Incorporating solar energy into your heating

system enables you not only to reduce your

costs for generating domestic hot water

by up to 60% (depending on the size of

the solar thermal system), you also benefit

the environment.

High performance DHW cylinders

The Vitocell DHW cylinders for indirect heating

enable a quick, plentiful and reliable supply of

DHW at all times. For applications requiring

large amounts of DHW, the vertical and

horizontal DHW cylinders can be combined to

create cylinder banks. By integrating the DHW

supply into your wood heating system, you can

save up to 50% of the running costs compared

to directly heated DHW.

Proven boilers

In an integrated system working with

renewables, wood heating is often connected

to a conventional oil/gas boiler that covers

peak loads or backs up the biomass boiler.

Depending on the type and temperature

demand of your system, Viessmann offers

highly efficient steel and cast iron condensingboilers and non condensing boilers.

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With Viessmann system technology, you can easily expand your wood heating systems

and enjoy all the benefits in an integrated system working with renewables.


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Wood heating systems in operation

Portable building package

Harney District Hospital

Burns, Oregon, USA

Kb wood heating systems

Kb has been installing commercial

wood heating systems for more than

30 years. During that time it has achieved

significant recognition for its innovative and

environmentally responsible products. Kb is

part of the Viessmann Group, which supplies

innovative high performance heating systems

and systems for renewables.

Planning and commissioning service

Each Kb installation begins with a system

plan devised by our own team of experts.

We examine the special requirements and

conditions of your project and provide you

with a bespoke system solution from

individual wood burning boilers to a fully

integrated system for heating with fossil fuels

and a solar thermal system.

Comprehensive system solutions and service

from one source.

More than 1 500 systems around the world operate with wood heating systems from Kb.


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Pyrotec installation

Brunstad Congress Center,

Norway

Cambomare leisure centre,

Kempten, Germany

Pyrot

Hotel Lagorai Cavalese Italy


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The company


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For three generations, the Viessmann family business has been committed to generating

heat conveniently, economically, with environmental responsibility and in accordance

with demand.

The Viessmann Group

With a number of outstanding product

developments and problem-solving solutions,

Viessmann has created milestones which

have frequently made them the trailblazer and

trendsetter for their entire industry.

Viessmann's orientation is decidedly

international it maintains 16 factories in

Germany, Austria, France, Canada, Poland,

Hungary and China, sales organisations in

Germany and 35 other countries, plus

120 sales offices around the world.

Group member companies

Viessmann is a family business that has

financed its growth almost exclusively

with its own resources. In more recent

times, company takeovers too have

contributed to our growth. Today, members

of the Viessmann Group include the wood

combustion specialists Kb and Mawera,

the heat pump manufacturer KWT, the

manufacturer of combined heat and power

units ESS, and BioFerm, a market leader in

biogas systems.

Skilful workforce

Initial and ongoing training is becoming ever

more important. As long ago as the 1960s,

we set ourselves the task of offering aprogramme of further tailor-made training to

our skilled contractors.

Today Viessmann maintains a modern

information centre at its company head office

in Allendorf (Eder), that is second to none.

Every year at the Viessmann academy, more

than 70 000 contractors bring their knowledge

right up-to-date.

The energy centre of the future

Viessmann has built an energy centre in

line with a homogenous climate protection

concept. This centre is equipped exclusively

with environmentally responsible technology.

This includes the generation of energy, its

use and environmentally friendly production

in the Allendorf (Eder) factory. As a result,

the amount of fossil fuels consumed at the

factory has been cut by 40 percent compared

to previous levels, and CO2emissions have

been reduced by a third.

Responsibility

Viessmann is committed to fulfilling its

environmental and social responsibilities.

Viessmann employees form a team acting

on a global footing. This team is defined by

the loyalty, reliability and the responsible

actions of each individual. We ensure all our

processes are environmentally compatible

and encourage the use of renewable forms

of energy. Furthermore we take an interest ineconomics, art and culture and have for many

years engaged in successful international

sport sponsorship.

Viessmann Group

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