Windhager BIOWIN 2 TOUCH User manual

BIOWIN 2 TOUCH
BWE 382, 452, 502, 632
EN
PELLET BOILER
03/2022 095441/00
INSTALLATION INSTRUCTIONS

2
Table of contents
TABLE OF CONTENTS
THE CLEAN AIR ACT  AND SMOKE CONTROL AREAS ..................................................... 
IMPORTANT INFORMATION .............................................................................................. 
1. General information ....................................................................................................................... 4
1.1 Relevant documents ...................................................................................................................................................4
1.2 Safety instructions and other symbols in this documentation...................................................................................4
1.2.1 Structure of safety instructions....................................................................................................................................... 4
1.2.2 Symbols, type of risk or meaning....................................................................................................................................4
1.2.3 Keywords......................................................................................................................................................................... 5
1.3 Units of measurement ................................................................................................................................................5
2. Safety ........................................................................................................................................... 6
2.1 General safety information.........................................................................................................................................6
3. Technical data and Product fiche..................................................................................................... 6
4. Health and safety........................................................................................................................... 7
4.1 Carbon Monoxide (CO) Alarms ...................................................................................................................................7
4.2 Access to site..............................................................................................................................................................7
4.3 Handling of appliance ................................................................................................................................................7
4.4 Electrics .....................................................................................................................................................................7
4.5 Working at heights .....................................................................................................................................................7
4.6 Ventilation .................................................................................................................................................................7
4.7 Asbestos ....................................................................................................................................................................8
4.8 Handling .....................................................................................................................................................................8
5. Flue .............................................................................................................................................. 8
5.1 Design.........................................................................................................................................................................8
5.2 Grade / specification ..................................................................................................................................................8
5.3 Draught regulation .....................................................................................................................................................8
5.4 Chimney cleaning .......................................................................................................................................................8
5.5 Technical data for calculating the flue gas system acc. to EN 13384-1......................................................................9
6. Boiler room/installation room......................................................................................................... 9
7. Fuel storage ................................................................................................................................10
8. Commissioning and operation........................................................................................................11
9. Disposal/recycling ........................................................................................................................11
FOR THE INSTALLER........................................................................................................ 
10. Scope of supply, packaging............................................................................................................12
11. System.........................................................................................................................................13
11.1 Area of use................................................................................................................................................................ 13
11.2 Standards ................................................................................................................................................................. 13
11.3 Heating circuits ........................................................................................................................................................13
11.4 Circulation pump...................................................................................................................................................... 13
11.5 Buffer (heat accumulator) ........................................................................................................................................13
11.6 Return temperature .................................................................................................................................................. 13
11.7 System water............................................................................................................................................................14
11.8 Water-side resistance (pressure loss) ......................................................................................................................14
12. Combustion air ............................................................................................................................ 14
12.1 Combustion air supplied directly from the plant room ............................................................................................15
12.2 External combustion air supply................................................................................................................................15
13. Installation sequence....................................................................................................................17
13.1 Parts designations for installation ........................................................................................................................... 17
13.2 Positioning, preparing for installation .....................................................................................................................18
13.3 Installation (observe minimum clearances – Section 13.4) .....................................................................................20
13.4 Minimum clearances for fire protection, cleaning and full service .......................................................................... 21
13.4.1 BioWIN 2Touch BWE 382–63.........................................................................................................................................21
13.4.2 BioWIN 2 Touch BWE 382-632 - Cascade ...................................................................................................................... 23

3
Table of contents
13.5 Installing the drain cock...........................................................................................................................................24
13.6 Moving the flue connection to the rear ....................................................................................................................25
13.7 7 Moving the external combustion air supply...........................................................................................................26
13.8 Installing the boiler pellet hopper............................................................................................................................27
13.9 Installing the suction turbine.................................................................................................................................. 30
13.10 Installing the top left cladding .................................................................................................................................31
13.11 Putting the boiler into the final installation position and aligning it horizontally ..................................................32
13.12 Installing the floor plate...........................................................................................................................................33
13.13 Installing the rear panel of the fuel hopper .............................................................................................................34
13.14 Installing the side panel on the right .......................................................................................................................35
13.15 Installing the control panel ......................................................................................................................................36
13.16 Fitting the cladding door on the right ......................................................................................................................37
13.17 Installing the top right part of the cladding.............................................................................................................37
13.18 Installing the side panel on the left .........................................................................................................................38
13.19 Installing the door mounting bracket.......................................................................................................................39
13.20 Installing the cladding door on the left................................................................................................................... 40
13.21 Installing the top left part of the cladding ...............................................................................................................41
13.22 Attaching the insulation to the auger tube/rotary feeder ........................................................................................41
13.23 Installing the anti-contact protection plate at the bottom.......................................................................................42
13.24 Installing the cable duct...........................................................................................................................................42
13.25 Installing the anti-contact protection plate at the top.............................................................................................43
13.26 Installing the locking plate.......................................................................................................................................43
13.27 Installing the InfoWIN Touch................................................................................................................................... 44
13.28 Installing the feed and return air hose.................................................................................................................... 44
13.29 Rear fuel hopper cladding cover...............................................................................................................................45
13.30 Front fuel hopper cladding cover ............................................................................................................................ 46
13.31 Cladding cover......................................................................................................................................................... 46
13.32 Installing the access ramp and ash box....................................................................................................................47
13.33 Cleaning and operating implements........................................................................................................................ 48
13.34 Installing the connecting flue pipe (connecting piece to the flue) ......................................................................... 49
FOR THE ELECTRICIAN .................................................................................................... 
14. Cable cross-sections and cable lengths...........................................................................................51
15. Electrical connections .................................................................................................................. 52
16. Connecting the INFINITY TA control .............................................................................................. 55
17. Installing covers.......................................................................................................................... 56
FOR THE SERVICE TECHNICIAN........................................................................................
18. Commissioning and operating instructions..................................................................................... 57
19. Service and repair work ............................................................................................................... 57
DIMENSIONAL DRAWINGS...............................................................................................
ELECTRIC CIRCUIT DIAGRAMS.........................................................................................
20. Basic circuitry – BioWIN 2Touch ................................................................................................... 59
20.1 Plan E1......................................................................................................................................................................59
20.2 Plan E2..................................................................................................................................................................... 60
20.3 Plan E3......................................................................................................................................................................61
21. Connection diagram – BioWIN 2Touch........................................................................................... 62
22. Connection diagram for pellet feed with buried tank mixer ............................................................. 63
WARRANTY CONDITIONS.................................................................................................

4
The Clean Air Act 1993 and Smoke Control Areas
THE CLEAN AIR ACT 1993 AND SMOKE CONTROL
AREAS
Under the Clean Air Act local authorities may declare the whole or part of the district of the authority to be a smoke
control area. It is an offence to emit smoke from a chimney of a building, from a furnace or from any fixed boiler if
located in a designated smoke control area. It is also an offence to acquire an unauthorised fuel for use within a smoke
control area unless it is used in an exempt appliance (exempted from the controls which generally apply in the smoke
control area).
The Secretary of State for Environment, Food and Rural Affairs has powers under the Act to authorise smokeless fuels
or exempt appliances for use in smoke control areas in England. In Scotland and Wales this power rests with Ministers
in the devolved administrations for those countries. Separate legislation, the Clean Air (Northern Ireland) Order 1981,
applies in Northern Ireland. Therefore it is a requirement that fuels burnt or obtained for use in smoke control areas have
been authorised in Regulations and that appliances used to burn solid fuel in those areas (other than authorised fuels)
have been exempted by an Order made and signed by the Secretary of State or Minister in the devolved administrations.
Further information on the requirements of the Clean Air Act can be found here :
http://smokecontrol.defra.gov. uk/
Your local authority is responsible for implementing the Clean Air Act 1993 including designation and supervision of
smoke control areas and you can contact them for details of Clean Air Act requirements.
The Windhager BioWIN2Touch pellet boilers BWE 382, 452, 502, 632 have been recommended as suitable for use in
smoke control areas when burning wood pellets.
IMPORTANT INFORMATION
All content in this document is the property of WINDHAGER and is therefore protected by copyright. Reproducing this
content, passing it on to others or using it for other purposes without the written consent of the owner is strictly pro-
hibited.
1. General information
1.1 Relevant documents
–Operating manual InfoWIN Touch, Operating manual BioWIN 2Touch
–Operating and installation instructions for system components
1.2 Safety instructions and other symbols in this documentation
1.2.1 Structure of safety instructions
KEYWORD Type of risk
Here, possible consequences are listed that may result from failure to observe the safety instructions.
fSteps to prevent the risk are listed.
1.2.2 Symbols, type of risk or meaning
Symbol Type of risk or meaning Symbol Type of risk or meaning
Injury Risk of burns

5
Important information
Symbol Type of risk or meaning Symbol Type of risk or meaning
Electrocution Risk of crushing
Risk of explosion Risk of fire
Risk of suffocation Hand injuries
No smoking, flames or other sources of ig-
nition are permitted
Material losses
(appliance damage, consequential losses
and environmental pollution)
No unauthorised access Appliance disposal
This symbol means that the parts indica-
ted must not be disposed of with domestic
waste.
Information or tips
f
This symbol indicates that you have to do
something. The action you need to take is
described step by step.
Follow instructions Pull out the power plug
Press the ON / OFF button Ensure sufficient ventilation before ente-
ring
Only enter the store under the supervision Protect from damp
Access only with a personal CO detector Wear a mask
1.2.3 Keywords
KEYWORD Meaning
DANGER Ignoring the warnings identified by this symbol can lead to serious injuries or death.
WARNING Ignoring the warnings identified by this symbol can lead to injury.
CAUTION Ignoring the warnings identified by this symbol can lead to malfunction of or damage to
the boiler or heating system.
Information or tips The blocks of text identified by this symbol provide information and tips for operation.
fRead these texts carefully.
1.3 Units of measurement
Note.
All measurements are given in mm unless stated otherwise.

6
Important information
2. Safety
The boiler together with its accessories complies with the latest state of the art as well as the relevant safety regula-
tions, and is operated with electric current (230 V AC). Improper installation or repair can pose the danger of life-thre-
atening electric shock. Installation may be performed only by appropriately qualified technicians.
2.1 General safety information
DANGER Electrocution
Turning off the on/off button on the InfoWINTouch does not mean the boiler and its accessories are comple-
tely without power.
fTherefore, you must de-energise the boiler (e.g. by unplugging the main power plug) when carrying out
cleaning or repair work.
WARNING Risk of crushing from rotating auger
fIf you have to touch these parts, always de-energise the boiler.
WARNING Risk of burns
fBefore touching these surfaces, you must switch off the boiler and let it cool.
DANGER Injury
fAlso read and observe the safety information in the operating manual.
3. Technical data and Product fiche
See operating manual BioWIN 2Touch.

7
Important information
4. Health and safety
DANGER Injury
Failure to follow these installation instructions could cause damage due to FIRE, ill health due to CARBON
MONOXIDE POISONING. If you are unsure of any of the instructions included in this document or have any
installation queries, call Windhager UK on the telephone number given in these instructions or email us with
your enquiry.
It is important that the chimney size, type, temperature rating and design meet the requirements of the appliance.
You must ensure that you understand the requirements of these instructions as well as those of the Building Regulations
in force in the part of the UK in which the appliance is to be installed, these include those listed in the section below.
Where a conflict between the two may arise then clarification can be sought from either Windhager UK or the local
Building Control Department of your Local Authority.
This manual gives advice on the installation of the appliance for many common installation situations but should you
need specific advice on any application, design or installation method then seek the advice of a specialist.
During and on completion of the installation and any associated building works, you must ensure compliance with the
Health and Safety at Work Acts and your responsibility under them; and any new regulations which may be introduced
while these instructions are in force. This will require the production of a risk assessment and particular attention
should be given to the following:
4.1 Carbon Monoxide (CO) Alarms
Building regulations require that whenever a new or replacement fixed solid fuel or wood/biomass appliance is instal-
led in a dwelling a carbon monoxide alarm must be fitted in the same room as the appliance. Further guidance on the
installation of the carbon monoxide alarm is available in BS EN 50292:2002 and from the alarm manufacturer’s instruc-
tions. Provision of an alarm must not be considered a substitute for either installing the appliance correctly or ensuring
regular servicing and full service of the appliance and chimney system.
4.2 Access to site
Ensure suitable and safe access is available to the work area, especially when working at height, on roof areas or enclo-
sed spaces. Do not enter environments you are not competent to work in.
4.3 Handling of appliance
Biomass appliances, especially in its larger sizes, are heavy and cumbersome, ensure you are familiar with your lifting
capability and if in doubt ensure suitable facilities and equipment are available for loading, unloading and handling.
4.4 Electrics
The boiler and all accessories operate using 230 V AC electric current and all electrical installations should be in accor-
dance with Approved Document P of the Building Regulations. Improper installation or repair can cause life-threatening
electric shock.
4.5 Working at heights
Ensure all those involved in working at heights during the installation of the chimney system are trained and qualified
to do so.
4.6 Ventilation
All combustion appliances require adequate ventilation to operate correctly. If an appliance is present or installed at
the same time, care must be taken to add purpose provided ventilation in accordance with Approved Document J of the
Build Regulations or the appliance manufacturer’s instructions, whichever is the greater.

8
Important information
4.7 Asbestos
If there is the possibility of disturbing any asbestos in the course of installation seek specialist guidance and use
appropriate equipment.
A faulty installation can cause danger to the inhabitants and structure of the building.
4.8 Handling
The Appliance is manufactured, packed and delivered with care but it is possible that during this process damage may
occur. It is important all components are checked on arrival and that any damage is reported immediately. If damage
occurs after this the manufacturer cannot take responsibility.
The appliance and components are robust when installed but should be handled with care during transport and instal-
lation. Damaged components must not be used.
5. Flue
A properly designed flue is realign spacing essential for the operation of the combustion system.
5.1 Design
For the appliance to operate at its rated efficiency and output it requires a chimney and flue that will provide the correct
flue draught. A chimney designed and installed to conform to Approved Document J (ADJ) of the Building Regulations
England and Wales (ADJ) or Scottish Building Standards Handbook sections 3 and 6 would normally be expected to
achieve this.
If a system that does not comply fully with this is required then as an alternative approach to ADJ, a chimney system
designed and installed to BS EN 15287 part 1 and a calculation to BS EN 13384 part 1 (having shown a suitable result)
can be used. For the values required to carry out a calculation to BS EN 13384 part 1 see the technical data section of
these installation instructions.
5.2 Grade / specification
It is important to note that at the modulated outputs the flue gas temperature may drop below 90ºC and so to avoid
excessive condensation the chimney system used must be thermally insulated and not just have an air gap insulation.
It is advised that where possible the chimney system has a condensate drain fitted at the base of the chimney.
The minimum BS EN 1443 rating of any steel chimney or chimney liner must be;
T450 N1 D Vm L50050 G(xx) Where (xx) is the distance from the outer surface to any combustible material
5.3 Draught regulation
For maximum efficiency and to avoid damage to either the appliance or the chimney it is recommended that a draught
regulator is fitted and if so it should be of the combined draught regulator with pressure relief valve. Where the flue
draught is likely to be, or is measured to be, greater than 20Pa a draught regulator must be fitted.
CAUTION Material losses
Ignoring the warnings identified by this symbol can lead to malfunction of or damage to the boiler or he-
ating system.
The connecting flue pipe must be to BS EN 1856 part 2 and, due to the low flue gas temperatures at modulated outputs,
be an insulated type as soon as possible.
5.4 Chimney cleaning
It must be possible to sweep the whole of the flue when the installation is complete and as it is not possible to sweep
through the appliance a separate chimney sweeping access must be provided within the connecting flue pipe or chimney
system.

9
Important information
5.5 Technical data for calculating the flue gas system acc. to EN
13384-1
BioWIN 2Touch pellet boiler Formula
symbols Unit BWE 382 BWE 452 BWE 502 BWE 632
min. max. min. max. min. max. min. max.
Nominal thermal output Qmin / QNkW 10.8 38.0 13.5 45.0 14.9 49.9 18.2 63.0
Nominal heat load (firing thermal
output) QBkW 11.8 41.2 14.6 47.2 16.0 52.5 19.4 67.3
Volume concentration of CO2s (CO2) % 10.5 13.5 10.5 13.5 10.5 13.5 10.5 13.5
Flue gas mass flow rate .
mkg/s 0.0082 0.0228 0.0100 0.0261 0.0111 0.0291 0.0135 0.0372
Flue gas temperature 1TW°C 75 126 77 125 78 123 80 120
Necessary feed pressure at the flue gas
connection (negative pressure) PWPa 0-5 0-5 0-5 0-5
Flue gas connection diameter Ømm 150 150 150 150
1Values in practical operation (average between two cleaning intervals)
Note!
Connection pipe to flue must have at least 2 cm of thermal insulation.
In some cases, external combustion air intake can be conducted with a tested wind protection fixture of type
FC 52x.
6. Boiler room/installation room
Important information for the design of the boiler house, fuel store.
DANGER Injury
The construction and layout of the boiler house, fuel store and chimney must comply with the fire safety
requirements of Approved Document B for high risk compartments.
The configuration of the entire system must comply with the requirements of regional legislation, local plan-
ning, applicable regulations, standards and guidelines.
–The minimum clearances for connections, cleaning and full service must be complied with – see section 13.4 Mini-
mum clearances for fire protection, cleaning and full service on page 21.
–Sufficient ventilation of the set-up area must be provided. See section 12. Combustion air on page 14.
–The boiler may only be installed in a dry location.
–The boiler may not be installed in rooms that are dusty or humid.
Permissible limit values: Humidity: max. 85 % at room temperature of 25 °C (non-condensing)
Room temperature: +2 to +40 °C
–Do not allow pets or other animals to enter the boiler room or installation room. Install appropriate barriers across
openings.
–In the event of floodwater, switch off the boiler in good time and disconnect it from the mains before water enters
the boiling room or installation room. You must remember to replace all components that come into contact with
water before you put the boiler back into operation.
–Sufficient lighting must be provided for service and full service.

10
Important information
7. Fuel storage
The fuel store for pellets must be dry and free from any damp to avoid degradation of the pellets, poor fuel delivery
and bad combustion.
The pellets can be stored in bulk in a prefabricated steel structure, purpose manufactured fabric fuel store or a pla-
stic underground tank. In all cases the product manufacturers’ instructions for construction and installation must be
followed.
Where a bespoke fuel store is to be constructed then this must meet the requirements of Approved Document B for fire
safety, Approved document A for structural stability and may require the acceptance of the local Building Control office.
Maximum transport length and height for pellet feed system:
These max. values require a stable power supply (min. 220 V under load!).
Max. 15 m distance  at max. 1.8 m height difference 
Max. 10 m distance  at max. 2.6 m height difference 
Max. 5 m distance  at max. 3.5 m height difference 
From the furthest probe to the pellet boiler
Height difference: sum of lengths of all rising pipes belonging to the feed hose
CAUTION Material losses
The pellets must delivered in accordance with 17225-2 EN-Plus to maintain the pellet quality.
BioWIN 2 Touch with built-in suction turbine:
1
2
3
4
5
6
1 ........... furthest probe
2 ...........Storage room
3 ........... Boiler room
4 .......... BioWIN 2Touch
5 ........... Suction turbine
6 ..........Changeover unit
Fig. 2 Storage room, boiler room – plan view

11
Important information
8. Commissioning and operation
Windhager Customer Service or an approved technician with a valid WIN-5 certificate will start up the boiler first, and
will familiarise the customer with the system operation and cleaning of the boiler, with reference to the operating ma-
nual.
The following preconditions must be met before scheduling the boiler commissioning:
fBoiler installed correctly.
fSystem fully wired up electrically.
fSystem flushed, filled and vented – heat load must be available (e.g. functioning heating system connected).
fBoiler connected to domestic water and filled.
fSufficient quantity of fuel available.
fThe customer must be present during commissioning.
The initial start-up cannot be carried out if any of these points are not complete. The customer will be charged
for any unnecessary costs arising as a result of incorrect start-up.
Commissioning by Windhager Customer Service or an approved technician with a valid WIN-5 certificate are part
of the warranty requirements.
Register My Boiler
Following the commissioning the customer must register their Windhager boiler(s)online via the windhager.co.uk web
site to validate their boiler warranty.
9. Disposal/recycling
Disposing of the packaging
The packaging material (wooden crate, cardboard boxes, inserts, plastic films and plastic bags, etc.) must be disposed
of correctly in line with the local legal provisions and regulations.
Disposing of components or the boiler
To dispose of defective components or the heating system (e.g. boiler or control system) after the product life has expi-
red, please observe the following information:
fDispose of the items correctly, i.e. separate the parts to be disposed of into material groups.
fDo not simply dispose of electrical or electronic waste with the general waste under any circumstances; instead, use
the public collection points provided for this purpose.
fAs a matter of principle, dispose of items in a way that is as sustainable as possible and that is in line with the cur-
rent environmental protection, reprocessing and disposal technology.

12
For the installer
FOR THE INSTALLER
10. Scope of supply, packaging
DANGER Risk of suffocation from plastic films.
Plastic films, bags and so on can become dangerous ‘toys’ in a child's hands. Therefore, never leave packa-
ging material unattended or allow children to get hold of it.
The boiler is supplied on a wooden pallet covered with a plastic sack – Fig. 3. The cladding parts are in a separate
cardboard box. Cleaning tools are packed in the combustion chamber and the ash chamber. In addition,
624
506
1221
300
1650
990
315
435
390
895
370
604
235
435
210
Ob erflä chenb ehandlung:
Teileart:
Gez.: 02.02.22 b ur
Ähnl. Teil:
Z.Nr.:
BioWIN 2 38-64
4-465-062 00
M.: 1:20
Freimaß toleranz: WN 001
Gepr.:
Vorratsb ehä lter mo.
Diese Zeichnung darf ohne unsere Ge-
nehmigung weder vervielfä ltigt noch dritten
Personen zugä nglich gemacht werden.
Ä-St. Bst. Änderung Tag
Werkstoff: Gewicht: 0.000 kg
ENTWURF - in Arbeit
975
790
1750
Oerflchenehandlung:
Teileart:
Gez.: 10.08.17 ur
Ähnl. Teil:
Z.Nr.:
BioWIN 2 38-64
4-465-052 00
M.: 1:20
Freimatoleranz: WN 001
Gepr.:
Einringma
Diese Zeichnung darf ohne unsere Ge- nehmigung weder vervielfltigt noch dritten Personen zugnglich gemacht werden.
Ä-St. Bst. Änderung Tag
Werkstoff: Gewicht: 0.000 kg
1
2
3
4
5
6
Fig. 3 Installation dimensions – BioWIN 2Touch
BioWIN 2Touch Transport weight including crate/packaging
BWE 382 BWE 452 BWE 502 BWE 632
1Boiler incl. base pallet kg 480 480 480 480
2Fuel hopper and floor plate incl. transport crate kg 75 75 75 75
3Cladding kg 92 92 92 92
4Suction feed kg 17 17 17 17
5Ash box kg 20 20 20 20
6Cleaning and operating implements, drain cock kg 3333
For diverse accessories for boiler and storage room, see price list.

13
For the installer
11. System
11.1 Area of use
For heating buildings according to EN 12831.
The appliances are designed and approved as heat generators for hot water heating systems with permissible flow
temperatures of up to 90°C. The max. boiler temperature is limited in the factory to 75 °C. In the service level, the max.
boiler temperature can be increased to 85 °C. To do this, a buffer has to be installed, which is loaded by the pellet boiler.
11.2 Standards
The following standards should be adhered to:
According to EN 12828: 2003 - Heating systems in buildings. Design for water-based heating systems the following
must be installed:
–A pressure vessel sized to match the system volume and expansion factor based on a 1 bar initial charge.
–A 3 bar pressure and temperature relief valve.
–A boiler that is equipped with an electronic thermostat and a type-tested overheat thermostat
–If the boiler is above the radiators, then a low-water cut-off must be installed.
11.3 Heating circuits
A motorised mixing valve is always required for the pellet boiler in order to protect the boiler and one must be fitted
in each heating circuit. A feed contact thermostat (FK-001) must be installed for underfloor circuits.
11.4 Circulation pump
From 2013, regulations in the EU require that new circulation pumps satisfy a minimum level of energy efficiency.
The Energy Efficiency Index (EEI) must be observed.
11.5 Buffer (heat accumulator)
Having a correctly sized buffer (heat accumulator) is essential for correct operation.
Recommended minimum sizes for buffer / heat accumulator:
BioWIN 2Touch buffer / heat accumulator
BWE 382 ≥ 1000 l
BWE 452 ≥ 1500 l
BWE 502 ≥ 1500 l
BWE 632 ≥ 2500 l
Note!
This recommendation does not replace the appropriate configuration of the buffer / heat accumulator size in
relation to the conditions of the system (such as the coincidence factor, heating requirements of the building,
or increased demand for hot water). Please observe the directives and supply conditions (such as BAFA 30 l/
kW (BAFA = the Federal Office for Economic Affairs and Export Control)) of the respective country at all times!
11.6 Return temperature
If using a buffer or heat accumulator, the pellet boiler return flow temperature must be maintained.

14
For the installer
11.7 System water
CAUTION Material losses
The chemical composition of the system water must conform with BS 7593:2006.
a) The chemical composition of the system water must meet the specifications of BS 7593:2006 - Code of Practice
for treatment of water in domestic hot water central heating systems. The condition of the system water must be
checked every 2 years by a heating technician in order to avoid corrosion and sediment accumulation in the heating
system.
b) The pipe lines and heating appliances should be power flushed before the boiler is connected.
c) To protect the boiler from contamination from the heating system, installation of a dirt trap (filter) is required in
old or existing systems (mesh size 0.5 mm) with full service cocks installed in the return line or equivalent magnetic
device.
d) If oxygen diffusion or sludge build-up cannot be prevented in the existing system, the system must be decoupled by
means of a heat exchanger.
e) If antifreeze and anti-corrosion liquids are used they must be in concentrations recommended by the product manu-
facturer and details of the chemical treatment recorded in commissioning documentation.
f) Failure to maintain correct system water quality may invalidate boiler warranty.
11.8 Water-side resistance (pressure loss)
0
10
20
30
40
50
60
0 1000 2000 3000 4000 5000 6000
BioWIN 2Touch 382–632
Pressure loss (mbar)
Flow rate (l/h)
Diagram 1 Water-side resistance – BioWIN 2Touch 382–632
12. Combustion air
DANGER Injury
The configuration of the entire system must comply with the requirements of regional legislation, applicable
regulations, standards and guidelines.
The combustion air is drawn directly by the boiler from the installation room; therefore, the installation room has to
be adequately ventilated. The combustion air should be directed to the vicinity of the boiler and must be free from
pollutants (gases, vapours and dusts); otherwise, malfunctions and increased wear (e.g. corrosion) may occur.
The operational reliability of the system must not be impaired by other equipment or systems within the air network
that extract surrounding air. Devices or systems of this kind should not be installed within the air network if at all
possible. If they do have to be installed, suitable measures must be implemented accordingly. Possible options include:

15
For the installer
1. Using safety devices to prevent the hearth from being used at the same time as the system that is responsible for
extracting air.
2. Using a safety device to monitor flue gas evacuation.
3. Implementing system-specific safeguards to prevent dangerous negative pressure from occurring when the hearth is
operated at the same time as the system that is responsible for extracting air.
CAUTION Material losses
Malfunctions or complaints occasioned by inadequate combustion air will not be covered by the warranty.
12.1 Combustion air supplied directly from the plant room
The combustion air is drawn directly by the boiler from the plant room, therefore the plant room has to be adequately
ventilated. The combustion air should be fed to near the boiler.
Ventilation:
All combustion appliances require adequate ventilation to operate correctly. If an appliance is present or installed at
the same time, care must be taken to add purpose provided ventilation in accordance with Approved Document J of the
Building Regulations or the appliance manufacturer’s instructions, whichever is the greater.
12.2 External combustion air supply
Combustion air supplied from ventilation draught in the flue
The combustion air is drawn in through an unobstructed ventilation draught in the flue – Fig. 4. The openings for the
intake air and the flue gas are only allowed to be located with a square with a 500 mm side length. This ensures that
the same air pressure always prevails in the openings (even in very windy conditions).
Only flue gas systems that have been tested and approved for solid fuel applications may be used.
In the BioWIN 2Touch 382–632 the air intake pipe can be connected directly (without accessories).
The lengths stated are only a guideline and should not take the place of an actual flue
calculation!
Pellet boiler BioWIN 2Touch BWE 382–632
Leak tightness of boiler unit with integral fuel hopper Required leak tightness is provided by standard rotary feeder
Max. induction length (air intake) 15 m; each 90° bend reduces the suction length by 1 m (max. pressure loss 14 Pa)
Air intake cross-section
(or technically equivalent cross-section) min. Ø 150 mm
Combustion air line (intake air)
(leak tightness min. 0.1 m³/h at 0.1mbar, e.g.
standard plastic pipes with seal)
DN 160
Flue/Connecting piece (flue gas) Max. length 3 m,
minimum classification acc. to DIN EN 1443: T200 N1 W2 G
Opening combustion air feed
Tested wind protection (model type FC52x) or
model according to DIN V 18160-1: Type FC42x
Equal-pressure: Induction opening for air intake and opening for flue gas discharge are
within a square with a max. edge length of 0.5 m – Fig.4.
Swinging draught flap, explosion flap Only flaps approved for external combustion air supply are allowed to be used
(e.g. bypass systems).
Table 1
Please note for Germany!
Only chimneys with general technical approval, classified as W3G according to DIN V 18160-1 may be used.

16
For the installer
Hearth with flue gas blower to DIN 18897-1 (type FC42x) for connection to a pressure-equal air/
flue gas s ystem
Examples of models:
Air/ue system with parallel supply air/ue layout
1
2
1 ........... Pellet boiler
2 ........... Combustion air line (intake air)
3 ........... Connecting piece (flue gas)
4 .......... Air/flue gas system
Detail X
Opening (shaft head in accordance with DIN V 18160-1)
Dh ......... Flue gas diameter
HÜ......... Opening clearance
hA ......... Spacing of dispersion plate
e ........... Protrusion of dispersion plate
5 ........... Flue gas
6 ..........Combustion air (intake air)
Requirements:
HÜ=
>
2 x Dh
hA = min. 10 cm
e = 0 cm to 8 cm
Note!
Only approved air/flue gas systems may be used.
Fig. 4 Sketch of ventilation draught in ue
The connection for the connecting piece on the chimney should be designed such that the condensate is prevented from
flowing from the chimney back into the connecting piece.

17
For the installer
13. Installation sequence
13.1 Parts designations for installation
1
3
4
5
6
12
14
11
13
8
9
7
10
2
20
19
18
15
16
17
23
21
22
24
Gewicht: 0.000 kg Werkstoff:
Tag Änderung Bst. Ä-St.
Diese Zeichnung darf ohne unsere Ge- nehmigung weder vervielfä ltigt noch dritten Personen zugä nglich gemacht werden.
Montageteile
Gepr.:
Freimaß toleranz: WN 001
1:20 M.:
00 3-465-054
BioWIN 2 38-64
Z.Nr.:
Ähnl. Teil:
Gez.: 24.11.21 b ur
Teileart:
Ob erflä chenb ehandlung:
1 ........... Top left cladding
2 ........... Rear wall
3 ........... Right side panel
4 .......... Operating panel
5 ........... Cladding door, right
6 ..........Left side panel
7 ........... Door mounting bracket
8 .......... Cladding door, left
9 ..........Top part of cladding, left
10 ........ InfoWINTouch
11 ......... Top part of cladding, right-rear
12 ......... Integral fuel hopper cladding cover, rear
13 ......... Integral fuel hopper cladding cover, front
14 ......... Cladding cover
15 ......... Floor plate
16 ......... Access ramp
17 ......... Ash box
18 ......... Auger tube rotary feeder unit
19 ......... Integral fuel hopper
20 ........ Suction feed
21 ......... Anti-contact protection, bottom
22 ......... Anti-contact protection, top
23 ........ Locking plate
24 ........ Cleaning and operating implements
Fig. 5 Parts for installation

18
For the installer
13.2 Positioning, preparing for installation
fIt is best to transport the boiler to the place of installation by lift truck. If transporting via stairs or similar, the boiler
should be secured appropriately.
Tip!
The rear transport bracket [2] is intended for clamping to a barrow – Fig. 7.
fThe boiler can be installed directly on a fire-resistant surface and does not require a special foundation.
The boiler can be removed from the transport pallet by:
a) Using iron rods to roll it off by hand – Fig. 8, Fig. 9.
b) Lifting it off by using the crane eye – Fig. 10.
CAUTION Material losses
The bottom of the boiler is secured to the base pallet by 2 screws – Fig. 6.
fRemove the screws.
fRemove transport protection [1] and transport bracket [2] and dispose of them correctly, as they are no longer re-
quired – Fig. 7.
fRemove insulation [3] for the auger tube/rotary feeder opening and put aside – Fig. 7. This insulation will be re-in-
stalled later - see point 13.22.
fRemove insulation [4] for the flue gas blower and put aside – Fig. 7. This insulation is required when moving the flue
gas blower to the rear – see point 13.6.
3
2
1
4
Fig. 6 Removing transport screws Fig. 7 Remove transport protection and transport bracket
1 ........... Transport protection
2 ........... Transport bracket
3 ........... Insulation for auger tube/rotary feeder opening
4 .......... Insulation for flue gas blower when moving to the rear

19
For the installer
a) Using iron rods to roll it off by hand
fTo make it easier to remove the pallet, slide some iron rods with a diameter of between 25 and 30 mm under the
boiler. Then roll the boiler off the pallet and pull the pallet away – Fig.8, Fig. 9.
Fig. 8 Placing an iron rod under the boiler Fig. 9 Sliding the boiler o the pallet
b) Lifting it off by using the crane eye
Alternatively, the boiler can also be lifted off the pallet by using the crane eye on the top of the boiler.
fPunch out and remove the cut-out over the crane eye – Fig. 10. After lifting the boiler off the pallet, the cut-out can
be re-installed with 2 self-tapping screws rotated by 180°.
Fig. 10 Remove the cut-out over the crane eye
fRemove the crate from the fuel hopper and floor plate – Fig.11, Fig. 12.
Fig. 11 Remove the crate Fig. 12 Fuel hopper and oor plate

20
For the installer
13.3 Installation (observe minimum clearances – Section 13.4)
The boiler can be installed directly on a fire-resistant surface and does not require a special foundation.
The boiler can be installed flush to the wall. Before installation, the rear panel has to be removed. You also have to cut
into the insulation and seal the flow and return connections – Fig. 13.
Note.
Care must be taken with regard to wall-flush installation to ensure that the piping is sealed completely before
actually installing the boiler. If necessary test under pressure by using the drain cock – see section 13.5.
The boiler may be installed directly onto a non-combustible surface and does not require special plinth or superimposed
hearth, however if a plinth or hearth is not used the area around the appliance should be identified with paint or change
in surface finish as required in Approved Document J (ADJ). If a plinth or hearth is provided, its size must comply with
ADJ and be solid enough and large enough to ensure that the four set screws used to adjust and get the boiler level in
all plains make contact properly.
Hydraulic adapter 5/4“
See separate instructions provided, "Installing the Hydraulic Adapter 5/4“ BIO 0622".
Gewicht: 0.000 kg Werkstoff:
Tag Änderung Bst. Ä-St.
Diese Zeichnung darf ohne unsere Ge- nehmigung weder vervielfä ltigt noch dritten Personen zugä nglich gemacht werden.
Hydraulikadapter mit Gerä t
Gepr.:
Freimaß toleranz: WN 001
1:10 M.:
00 3-465-008
BioWIN 2 38-64
Z.Nr.:
Ähnl. Teil:
Gez.: 22.11.21 b ur
Teileart:
Ob erflä chenb ehandlung:
Fig. 13 Connection options for ow and return pipes – view from behind without rear panel