Forester UFS & MGS Wood Chip Boilers
Output range 180 to 2000 kW
Why choose Forester? The Forester wood chip boiler with a choice of under-feed stoker or moving-grate stoker fuel
Economical
Ecological
Saving money and carbon together Low heating costs Efficient fuel usage
Low impact on the environment Low CO2 emissions Sustainable and renewable heat energy
Low electrical consumption Grant funding available through the
Wood and sun – a winning combination
Easy to use
Sophisticated
Simple maintenance
2
Versatile operation
Hinged door
Optimised fuel feeding systems
Assisted ash removal
Innovative touch screen
Automatic ignition
Operates with wood chip moisture content as high as 50%
The complete Forester range extends from 180 kW to 2000 kW boilers
Forester
3
Forester Advanced technology - sophisticated and easy to use
User-friendly operation designed to run on virgin wood chip fuel – an energy source that is becoming increasingly available to meet the growing
High combustion efficiency – very low emissions With its sophisticated combustion process, the Forester meets the requirements of EN303-5 Class 3 for
sustainable woodland is shredded offsite into small evenly
fully co-ordinated control secondary combustion air
of
both
primary
and
brought to site in bulk delivery vehicles and tipped into a
particulate abatement technology
The wood chip fuel is mechanically recovered from this
primary heating surfaces, which are further optimised by
Automation with efficiency over 90%
Pneumatic cleaning of fire tubes
With the aid of the lambda sensor, the microprocessor-driven combustion control achieves
pneumatic air blast nozzle mounted on the door at the front help to clear any ash particles that accumulate on the heat
It automatically detects variations in chip quality and
Unlike boilers which run on wood pellet fuel, this feature is because the ash content of chip is generally much higher
4
De-ashing
Assisted Ignition
Expertise in system combinations
within the boiler is achieved by utilising a hot air blower that initiates during
experience, the Forester can be easily incorporated into other heat supply
established, the combustion process becomes self-sustaining allowing the hot air blower to be disengaged and the boiler to operate under normal
boilers to help meet peak demand
The boilers can be arranged such that
Depending on the boiler model and client requirements, the ash is either collected in individual bins or a large common container mounted alongside
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Forester UFS (Under Feed Stoker) Advanced technology - sophisticated and easy to use 3-pass heat exchanger
Front door with automatic pulse cleaning of the
Exhaust gas cleaning
Ash container for grate ash cyclone ash
Secondary air
Fuel inlet via stoker feed screw
Cast burner retort with primary air feed
Automatic discharge of ash
6
Ash grate
Fuel Quality & Technical Data For consistent and reliable boiler performance, sourcing the correct quality wood chip fuel is
should be evenly sized and free from foreign
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Model (UFS) (1)
Nominal Output
Minimum Output
20
25
30
35
40
45
50
55
60
180
240
300
360
450
550
700
900
1200
1600
2000
kW
180
240
300
360
450
550
700
900
1200
1600
2000
%
91
91
91
91
91
91
91
91
91
91
91
%
90
90
90
90
90
90
90
90
90
90
90
째C
190
190
190
190
190
190
190
190
190
190
190
째C
110
110
110
110
110
110
110
110
110
110
110
3
390
520
650
780
975
1190
1520
1950
2600
3470
4340
째C
95
95
95
95
95
95
95
95
95
95
95
째C
70
70
70
70
70
70
70
70
70
70
70
3
0.21
0.28
0.35
0.42
0.53
0.65
0.82
1.06
1.30
1.90
2.30
830
830
1100
1100
1550
1550
2550
2550
3450
3650
5200
3450
3550
4400
4400
6600
6600
9900
9900
13000
15400
20900
180
200
200
250
300
300
300
350
400
450
15
15
15
15
15
15
15
15
15
15
2
Water Temperature
Water Temperature
at Flue Outlet
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3/400/50 3/400/50 3/400/50 3/400/50 3/400/50 3/400/50 3/400/50 3/400/50 3/400/50 3/400/50 3/400/50
3
7
Forester MGS (Moving Grate Stoker) Advanced technology - sophisticated and easy to use 3-Pass Heat Exchanger
Exhaust Gas Fan
Exhaust Gas Cyclones
Front Door with Pneumatic Blast Cleaning of the Fire Tubes
Refractory Mass Secondary Combustion Chamber Curved Convector
Fuel Inlet via Stoker Feed Auger
Inspection Door to Secondary Combustion Chamber
Primary Combustion Chamber
Access Door to Grate Flat Bed Moving Grate
Under Grate De-Ashing Grate Ash Extraction Auger
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Fuel Quality & Technical Data For consistent and reliable boiler performance, sourcing the correct quality wood chip fuel is
should be evenly sized and free from foreign
15
Model (MGS)
Minimum Output
25
30
35
40
45
50
55
180
240
300
360
450
550
700
900
1200
1600
2000
180
240
300
360
450
550
700
900
1200
1600
2000
91
91
91
91
91
91
91
91
91
91
91
90
90
90
90
90
90
90
90
90
90
90
째C
170
170
170
170
170
170
170
170
170
170
170
째C
110
110
110
110
110
110
110
110
110
110
110
Nm3
390
520
650
780
975
1190
1520
1950
2600
3470
4340
째C
90
90
90
90
90
90
90
90
90
90
90
째C
70
70
70
70
70
70
70
70
70
70
70
litres
830
830
1100
1100
1550
1550
2550
2550
3450
3650
5200
kg
4750
4800
5540
5560
9090
9110
14500
14500
19100
24600
34000
mm
180
200
200
250
300
300
300
350
400
450
500
5 - 10
5 - 10
5 -10
5 - 10
5 - 10
5 - 10
5 - 10
5 - 10
5 - 10
5 - 10
5 - 10
kW
Nominal Output
20
60
2
Water Temperature Water Temperature
m3
at Flue Outlet
3
9
Forester UFS & MGS Optimised fuel feeding systems Making the right choice
Rotary arm discharge system The
rotary
arm
discharge
system
is
a
good
fuel storage and conveyor systems to meet your and layout reviews and suggest the best delivery
Fuel store:
Typical application of Forester UFS
Controller: Optimised control and monitoring system of these control circuits optimises the furnace values, guaranteeing a high
Fuel feed: Depending on the nature of the material, by feed screw, double screw or scraper chain
Underfeed stoker UFS:
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Automatic de-ashing: Compact boiler construction with underfeed
Typical application of Forester MGS
Wood chip fuel: Typically tipped into Store discharge: system
into
collection
Controller: Optimised control and monitoring system these circuits results in optimal values,
Fuel feed: transport augers depending
Automatic de-ashing: Central or separate automatic de-ashing of
Moving Grate MGS: Compact boiler construction with moving grate
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Wood chips are the energy of the future
Wood – a fuel with a future
Chips – bundles of natural energy
The use of wood as a modern source of energy deserves
Wood chips are a processed form of wood fuel that can be
The
If the chip has a high bark content this can cause excessive ash formation, which may reduce boiler
high
performance
Forester
allows
you
to
Most importantly, moisture content of the chip affects the content, the more energy that is required to deliver
combustion, variations in output performance and working
Efficient heating with wood chips increasingly causing developers to consider wood as an The Forester simultaneously addresses ecological concerns, provides user-friendly technology, and meets
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Forester and Hoval system solutions A professional integrated approach
Forester and Solar combinations
System technologies
With the move towards renewable energy, an ever-evolving range of technologies is being integrated into building
combination possible but have real economical and
Flexibility to suit any need
Domestic hot water
sources, including biomass, can be utilised together, delivering a well co-ordinated system to meet your heating
Our extensive product range can provide solutions to meet most building conditions producing hot water as
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Notes
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An expert partner
One-stop shopping With us you can easily incorporate gas, oil, heat pump,
Technical advice We are happy to assist you and your planning partners in developing intelligent systems, allowing you to take advantage of our expertise and the experience of our
After sales For specialist commissioning and maintenance of your
Phone 01636 672 711 Fax 01636 673 532 email boilersales@hoval.co.uk www.hoval.co.uk
Responsibility for energy and environment Responsibilty for energy and environment
May 2012
Hoval Ltd Northgate Newark-on-Trent Nottinghamshire NG24 1JN United Kingdom