Windhager BIOWIN 2 TOUCH User manual

EN
OPERATING MANUAL
BIOWIN 2TOUCH
PELLET BOILER
09/2020 094897/02
FOR USE IN CANADA / USA
www.firetesting.com

2
Table of contents
TABLE OF CONTENTS
IMPORTANT INFORMATION FOR SYSTEM OPERATORS ........................................................ 
1. General information ....................................................................................................................... 4
1.1 Relevant documents ...................................................................................................................................................5
1.2 Safety instructions and other symbols in this documentation ...................................................................................5
1.2.1 Structure of safety instructions....................................................................................................................................... 5
1.2.2 Symbols, type of risk or meaning....................................................................................................................................6
1.2.3 Keywords.........................................................................................................................................................................6
1.3 Liability exclusion ......................................................................................................................................................6
1.4 Spare parts .................................................................................................................................................................6
1.5 Data plate ...................................................................................................................................................................7
2. Safety ........................................................................................................................................... 7
2.1 Manufacturer’s obligations ........................................................................................................................................7
2.2 Installer’s obligations ................................................................................................................................................7
2.3 Operator’s obligations ...............................................................................................................................................8
2.4 General safety information.........................................................................................................................................8
2.5 Sources of danger.......................................................................................................................................................9
2.5.1 Power failure (or if the induced draught fan is not running) ..........................................................................................9
2.5.2 Burner bowl.....................................................................................................................................................................9
2.5.3 Entering the pellet storage room, storage container.......................................................................................................9
2.5.4 Combustion air................................................................................................................................................................9
3. Fuel ............................................................................................................................................ 10
4. Commissioning and operation........................................................................................................11
5. Safety device and function checks..................................................................................................11
6. Filling the pellet store (bulk fill)....................................................................................................12
6.1 Entering the pellet storage room, storage container................................................................................................ 13
7. Safety instructions........................................................................................................................13
OPERATION .................................................................................................................... 
8. Opening the cladding door............................................................................................................ 19
9. Functional description, components and operating controls BioWIN 2 Touch..................................... 20
9.1 BioWIN 2 Touch Klassik/Klassik-L.............................................................................................................................20
9.2 BioWIN 2 Touch Exklusiv-S/Exklusiv-SL.................................................................................................................... 21
9.3 BioWIN 2 Touch Premium / Exklusiv ........................................................................................................................22
10. Functional description function module INF F05 ............................................................................ 23
10.1 External heating demand (INF F05 W) .....................................................................................................................23
10.1.1 Heating demand 0 - 10 VDC......................................................................................................................................... 23
10.1.2 Digital potential-free extra-low-voltage contacts (5 VDC) ........................................................................................... 23
10.1.3 Digital low-voltage input (230 VAC)............................................................................................................................. 23
10.1.4 Pump control with relay................................................................................................................................................ 23
10.2 Collective alarm (INF F05 S) ....................................................................................................................................24
10.3 Cascade function (INF F05 K) ..................................................................................................................................24
10.3.1 Pump control with speed regulation ............................................................................................................................. 24
10.3.2 Buffer loading pump...................................................................................................................................................... 25
10.3.3 Boiler pump................................................................................................................................................................... 25
10.3.4 Assigned to boiler (heat generator) .............................................................................................................................. 25
10.4 General functions .....................................................................................................................................................25
10.4.1 Boiler start-up relief and excess temperature protection functions ............................................................................. 25
10.4.2 Pumps seizing ............................................................................................................................................................... 25
10.4.3 Set point offset.............................................................................................................................................................. 25
11. Check before switching on............................................................................................................ 26

3
Table of contents
12. Filling the boiler pellet hopper ..................................................................................................... 26
12.1 Manual filling, BioWIN 2 Touch Klassik/Klassik-L/Exklusiv-S/Exklusiv-SL ..............................................................26
12.2 Fully automatic filling, BioWIN 2 Touch Premium/Exklusiv......................................................................................26
13. Heating system operation............................................................................................................. 26
13.1 Turning the boiler on................................................................................................................................................27
13.2 Emergency operation................................................................................................................................................27
CARE, CLEANING AND FULL SERVICE................................................................................
14. Overview of intervals between cleaning (Full service) .................................................................... 28
14.1 Confirming cleaning or main cleaning – Resetting the cleaning request .................................................................29
15. Cleaning and operating implements .............................................................................................. 30
16. Care of cladding and InfoWIN Touch .............................................................................................. 30
17. Emptying the ash pan and removing ash from below the heat exchanger ...........................................31
18. Emptying the ash box ................................................................................................................... 33
19. Cleaning the combustion chamber and burner bowl ........................................................................ 35
19.1 Cleaning the thermocontrol sensor and down chute ................................................................................................36
19.2 Cleaning the burner bowl .........................................................................................................................................37
20. Cleaning the top heat exchangers and induced draught fan wheel.................................................... 38
21. Exhaust pipe to flue ....................................................................................................................40
22. Disposal of ashes .........................................................................................................................40
23. Creosote - formation and need for removal ....................................................................................40
24. Water tank level........................................................................................................................... 41
25. Cleaning the boiler pellet hopper and feed unit flap, and re-filling the boiler pellet hopper in an
emergency................................................................................................................................... 42
25.1 Clean the boiler pellet hopper and the feed flap......................................................................................................43
25.2 Emergency re-fill of the boiler pellet hopper .......................................................................................................... 44
26. Storage room or storage container ................................................................................................ 45
27. Full service..................................................................................................................................46
28. Spare parts.................................................................................................................................. 47
28.1 BioWIN 2 Touch pellet boiler....................................................................................................................................47
28.2 Reserve supply container – BioWIN 2 Touch ........................................................................................................... 50
28.2.1 Reserve supply container with suction feed and reserve supply container 236 lb / 107 kg - without suction feed.....50
28.2.2 Reserve supply container L 441 lb / 200 kg ................................................................................................................. 51
28.3 Control panel – BioWIN 2 Touch ...............................................................................................................................54
28.4 Burner – BioWIN 2 Touch..........................................................................................................................................56
28.5 Heating surface cleaning – BioWIN 2 Touch ............................................................................................................58
28.6 Ash box – BioWIN 2 Touch ........................................................................................................................................59
28.7 Cladding – BioWIN 2 Touch ..................................................................................................................................... 60
28.8 3-way changeover unit .............................................................................................................................................61
DISPOSAL/RECYCLING ....................................................................................................

4
Important information for system operators
IMPORTANT INFORMATION FOR SYSTEM
OPERATORS
Dear Heating System Owner,
We would like to congratulate you on your new environmentally friendly heating system. With the purchase of this high-
quality product by Windhager, you have selected a system that provides more comfort and optimised fuel consumption
while utilising an environmentally friendly means of saving resources. Your boiler was manufactured under strict ISO
9001-certified standards, was subjected to extensive tests and all the components are recyclable.
We have provided specific information and important tips regarding systems operation, unit functions and cleaning.
This manual contains data with US units. The units in the original manual are European units. If there is a data conflict
between these units, the data with European units is always valid.
The original manual is written in German – this is an English translation. In case of conflicts, the German version is
always valid.
Note.
Operation of the boiler together with the InfoWINTouch display and operating unit is described in a se-
parate InfoWIN Touch operating manual. Please pay close attention to these instructions. Familiarity with
the material in this document will allow you to enjoy long-term operation of the boiler. We wish you all the
best with your Windhager boiler.
1. General information
As required by the United States Department of Environmental Protection the following information is given for the:
BioWIN 2 Touch wood pellet fired central heating boilers. Manufactured by Windhager Zentralheizung Technik Gmbh,
Anton Windhager Strasse 20, Seekirchen 5201, Austria
The BioWIN 2 Touch boilers have the following nominal output levels and comply with EPA 2020 requirements:
– BioWIN 152 51.2 kBTU/hr (15 kW)
– BioWIN 212 71.7 kBTU/hr (21kW)
– BioWIN 262 88.4 kBTU/hr (25.9 kW)
– BioWIN 332 110.9 kBTU/hr (32.5 kW)
The BioWIN 2 Touch system efficiency and the nominal output was measured by a test laboratory using the HHV of the
fuel.
– BioWIN 152: 64.7 % (119 gal thermal storage included)
– BioWIN 212: 57.6 % (238 gal thermal storage included)
– BioWIN 262: 70.7 % (238 gal thermal storage included)
– BioWIN 332: 70.6 % (238 gal thermal storage included)
The system efficiency was determined during performance testing using the IDC protocol. Further technical data can
be found in the Installation manual.
Your BioWIN 2 Touch boiler has a manufacturer-set minimum low burn rate that must not be altered. It is against
federal regulations to alter this setting or otherwise operate this wood heater in a manner inconsistent with operating
instructions in this manual.
Your BioWIN 2 Touch boiler is equipped with automatic fuel loading. There are no further loading instructions. Solely
PFI Premium 100% wood pellets shall be used.
Materials such as trash, plastics, gasoline, rubber, naphtha, household garbage, material treated with petroleum pro-
ducts such as particleboard, railroad ties, and pressure treated wood.
Burning these materials may result in release of toxic fumes or render the heater ineffective and cause smoke.
Your BioWIN 2 Touch is equipped with an automatic ignition and starts itself when required by building load. Thus, no
further ignition procedures are to be followed.

5
Important information for system operators
There are no user adjustments for the air controls required.
It is important to have BioWIN 2 Touch boiler serviced by a trained professional who is aware of the importance to
ensure that:
– there are no inlet air restrictions in or around your boiler’s combustion blower
– the air passages within your boiler are free of debris(ash, creosote, etc.)
– the Flue pipe and chimney are clean and free of debris / restrictions
– combustion chamber door (when closed and secured) and the ash box seal are airtight.
Ash removal is completely automatic. Ashes should be placed in a metal container with a tight-fitting lid. The closed
container of ashes should be placed on a non-combustible floor or on the ground, away from all combustible materials,
pending final disposal. The ashes should be retained in the closed container until all cinders have thoroughly cooled.
A person or persons responsible for the operation of a hydronic heater must comply with all applicable laws or require-
ments, such as State laws or regulations as well as local ordinances.
A person or persons operating a hydronic heater should be aware that they are responsible for operation in such a man-
ner that does not create a public or private nuisance condition.
The manufacturer’s distance and stack height recommendations and the requirements in any applicable laws or other
requirements may not always be adequate to prevent nuisance conditions due to terrain or other factors.
Your BioWIN 2 Touch should be installed with a minimum stack height of 16 feet. Providing correct draft as given in the
Installation manual.
Draft is the force, which moves air from the appliance up through the chimney. The amount of draft depends on the
length of the chimney, local geography nearby obstructions and other factors.
Too much draft may cause excessive temperatures in the appliance and may damage parts in the catalytic combustor.
Inadequate draft may cause backpuffing into the room and ‘plugging’ of the chimney, or the catalyst.
Inadequate draft will cause the appliance to leak smoke into the room through appliance and chimney connector joints.
Your BioWIN 2 Touch is not a catalytic type burner.
You should never use a combustion appliance in your home without an installed smoke and CO detector.
Your local fire department usually has good advice on placement of these detectors and how many your home needs for
complete coverage.
Complete important installation information is found in the installation manual.
The chapters „Important information for system operators“ and "Operation" are intended for both users and qualified
contractors.
Note.
This wood heating appliance needs periodic inspection and repair for proper operation. It is against fe-
deral law to operate this wood heating appliance in a manner inconsistent with operating instructions in
the manual.
Note.
Read these instructions carefully before using the appliance and retain them for future reference.
Pass on the instructions to a new user if required.
1.1 Relevant documents
– Operating manual InfoWIN Touch, installation instructions BioWIN 2Touch
– Operating and installation instructions for system components

6
Important information for system operators
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.
„Steps 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
Electrocution Risk of crushing
Material losses
(appliance damage, consequential losses
and environmental pollution)
Appliance disposal
This symbol means that the parts indica-
ted must not be disposed of with domestic
waste.
Information or tips
„
This symbol indicates that you have to do
something. The action you need to take is
described step by step.
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.
„Read these texts carefully.
1.3 Liability exclusion
All work should be performed exclusively by trained personnel. Local safety regulations must be complied with in
all cases; in the event of a conflict and/or contradiction between these regulations and the working instructions in
this document (e.g., impairment), then the local regulations should be adhered to in any event and the
working instruction should not be carried out; WINDHAGER ZENTRALHEIZUNG GMBH, ÖSTERREICH and WINDHAGER
ZENTRALHEIZUNG TECHNIK GmbH, ÖSTERREICH do not accept any liability for any injury to persons or damage to
property caused by incorrectly following the instructions and/or violating the local safety regulations! Subject to
modifications. No liability is accepted for errors in translation.
1.4 Spare parts
For spare parts, please contact the Customer Service partner.

7
Important information for system operators
1.5 Data plate
The data plate bears important specifications relating to the unit, such as its type, factory number and year of manuf-
acture. If you need a spare part or have to contact Windhager Customer Service or your customer service partner due
to a malfunction, please first make a note of this data from the data plate. The data plate is located on the front of the
equipment, behind the cladding door below the control panel – Fig. 2.
1
1........... Data plate
Fig. 2 Data plate
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 (110 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 Manufacturer’s obligations
Our products are manufactured in accordance with the essential requirements of the various applicable guidelines. They
therefore carry the label and are supplied with all the required documentation.
Technical details subject to change.
We as the manufacturer cannot be held liable in the following cases:
– Incorrect use of the unit.
– Failure to perform proper full service on the unit.
– Incorrect installation of the unit.
2.2 Installer’s obligations
The installer is the person responsible for installing the unit. The installer must comply with the following instructions:
„Read and follow all instructions supplied with the unit.
„Carry out installation in accordance with the applicable standards and specifications.
„Explain to the operator how the system works.
„Make the operator aware of his obligation to inspect and maintain the unit.
„Hand over all operating manuals to the operator.

8
Important information for system operators
2.3 Operator’s obligations
To ensure that the unit operates at optimum performance, the operator must follow these instructions:
„Only adults who have received instruction from Windhager Customer Service or a heating technician may operate
the system.
„The operator must have read and understood the instructions contained in the documentation.
„Installation and initial start-up must be performed by appropriately qualified technicians.
„Make sure the installer explains how the system works.
„Perform all the necessary checks and full service.
„Keep the instructions in good condition and store them near the boiler.
DANGER Injury
This unit is not intended for use by persons (including children) who have physical or mental disabilities or
sensory impairment or who have no experience or knowledge of the correct use of the unit, unless supervised
or trained by a person responsible for their safety. Children should be supervised to ensure they do not play
with the unit.
2.4 General safety information
DANGER Injury
Please follow the safety instructions (symbols) on the appliance!
Please refer to the instructions in chapter 7. Safety instructions on side 13!
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.
„Therefore, 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
„If you have to touch these parts, always de-energise the boiler.
WARNING Risk of burns
„Before touching these surfaces, you must switch off the boiler and let it cool.

9
Important information for system operators
2.5 Sources of danger
2.5.1 Power failure (or if the induced draught fan is not running)
WARNING Risk of explosive combustion.
Do not open the combustion chamber door, there is an increased risk of explosive combustion when opening
the combustion chamber door. A self-test is performed following a power failure during combustion and then
operation is continued automatically.
2.5.2 Burner bowl
WARNING Risk of explosive combustion.
Never fill the burner bowl with pellets by hand. Excessive combustion material in the burner bowl means that
the pellets will not be ignited optimally. Too much low-temperature carburisation gas will be generated and
this can lead to explosive combustion.
2.5.3 Entering the pellet storage room, storage container
All energy sources are subject to safety regulations, which must be observed when working with fuels, heating systems,
and storage rooms. This also applies to pellet storage.
After the storage room is filled, odorless carbon monoxide (CO) may be produced, and there may be insufficient oxygen
present. For this reason, do not enter the pellet storage room for 6 weeks after it has been filled. Only persons trained
for working in confined spaces may enter the storage room for the purpose of measuring gas levels before any work is
carried out.
Please also follow the instructions on the pellet storage room safety notice:
– No access to unauthorised persons, keep children away from the pellet store.
– Ensure sufficient ventilation before entering. Keep the door open while inside.
– Only enter the storage room under the supervision of a second person standing outside. .
– No smoking, flames or other sources of ignition are permitted.
– Risk of injury from moving parts.
– Pellet boilers must be switched off at least 15 minutes before filling.
– Fill in accordance with the instructions of the boiler and pellet suppliers.
– Protect pellets from damp.
If you feel unwell, leave the storage room immediately and seek medical advice.
DANGER Attention, risk of suffocation.
Do not attempt to enter an unventilated storage room.
2.5.4 Combustion air
Never seal openings that have been provided for ventilation.

10
Important information for system operators
3. Fuel
The boilers/heaters are designed to burn the following fuels:
Pellets according to EN ISO 17225-2 A1, DIN-Plus or UZ38, or Super Premium Wood Pellets listed in the Pellets Fuel
Institute (PFI) Standard.
Significant criteria based on the standards are as follows:
Diameter 0.25 in / 6 mm Length: 5-40 mm / 0.20-1.6 in.
Smooth surface Bulk density: 600-700 kg/m3 (37.5-43.7 lb/ft3)
Residual moisture content max. 10 % Energy content 16,3 – 19 MJ/kg = 4,6 – 5,3 kWh/kg
Ash content max. 0.7 % (with 1022 °C) Abraded particles max. 2.5 %
Chemical/synthetic binding agents are strictly prohibited No impurities from varnish or paint residues, etc.
This boiler/heater is equipped for the following type of fuel only and must not be used with any fuel other than listed
below:
– Super Premium Wood Pellets listed in the Pellets Fuel Institute (PFI) Standard.
– Wood Pellets listed in the EN ISO 17225-2 A1 standard.
– Wood Pellets listed in the DIN-Plus or UZ38 standard.
These pellets must fulfill following requirements:
Fuel Property General requirements
Device specific - Mandatory
Heating Value
Ash Fusion
Diameter
7737 – 8511 BTU/lb
2192 °F
0.25 inches
5.0 – 5.5 kWh/kg
1200 °C
6 mm
Fuel Property PFI Super Premium
Normative Information
Bulk Density, lb./cubic foot
Pellet Durability Index
Fines, % (at the mill gate)
Inorganic Ash, %
Length, % greater than 1.50 inches / 38.1 mm
Moisture, %
Chloride, ppm
40.0 - 46.0
≥ 96.5
≤ 0.50
≤ 0.05
≤ 1
≤ 8.0
≤ 300
Store pellets in a dry, safe place. Follow local and building codes when storing pellets.
The use of lower quality pellets will lead to malfunctions, increasing the need for service. It will also lead to the loss
of warranty.
The use of any fuel other than listed above may result in fire and explosion!
Consequences of quality fluctuations:
Pellets are 100% unprocessed wood, so minor fluctuations in fuel quality are normal and reflect the natural origins of
the material. These quality fluctuations affect the level of dirt, the ash content and therefore the cleaning intervals.
Areduction in cleaning intervals due to fluctuations in pellet quality cannot be remedied as part of a repair under gu-
arantee!
The use of lower quality pellets will lead to malfunctions, increasing the need for service. It will also lead to the loss of
warranty. Make your pellet supplier aware of these quality requirements before ordering and seek confirmation upon
delivery.

11
Important information for system operators
4. Commissioning and operation
A Windhager representative or one of its partners must commission your new Windhager boiler system. Our
representatives will ensure that all systems are thoroughly checked and can provide additional information at the time
of commissioning. Installation and routine maintenance performed by a qualified Windhager representative will ensure
the optimal performance and service life of your boiler system. This will also ensure that this technologically advanced
system provides the benefits of safe, environmentally friendly, and energy-saving operation.
The following preconditions must be met before the commissioning:
– The boiler is installed and connected properly.
– System fully wired up electrically.
– System flushed, filled and vented – heat load must be available.
– Hot water tank connected to domestic water and filled.
– Sufficient quantity of fuel available.
– The customer must be present during commissioning.
The commissioning cannot be carried out if any of these points are not complete. The customer may be charged
for any unnecessary costs arising as a result of incorrect start-up.
Commissioning by Windhager Customer Service or a heating technician are part of the warranty requirements.
Note.
During the first few weeks after start-up, condensation can occur in the combustion chamber, ash pan and on
the heating surfaces. This has no effect on the function and service life of the boiler.
5. Safety device and function checks
Check the function of all safety devices (such as Pressure Relief Valve and Low Water Cut-off, and others if required and
installed) annually, according to the manufacturers‘ recommendations.
DANGER Injury
To prevent burns and other injuries resulting from contact with hot water, test all safety devices only when
unit is turned off and has cooled completely.
If you have an annual maintenance contract with a certified Windhager partner, these tests will be completed during
their routine maintenance work.
It is required that the function of the system and related safety equipment be checked and certified yearly by a qualified
technician (installer, heating system contractor).
At two-year intervals, the heating water condition must be checked by a heating expert (see BioWIN 2 Touch installation
instructions – heating water); this is to prevent corrosion and sediment accumulation in the heating system and boiler/
heater. For systems using more than 1,500 liters (396.3 gallons) of water (e.g., systems with accumulator tanks), this
inspection is required on an annual basis.
In the event of repair work requiring a change of water in the heating system, the heating water is to be checked within
4 to 6 weeks after the repair work.
Corrosion and sediment resulting from improper heating water are not covered by the guarantee and warranty.

12
Important information for system operators
6. Filling the pellet store (bulk fill)
DANGER Attention, risk of burn-back.
„The pellet boiler must be switched off correctly at least 15 minutes prior to filling. Press the ON/OFF
button – Fig. 3. Never switch off using the emergency OFF switch.
„Turn off the boiler with the ON/OFF button on the InfoWIN Touch (Fig. 3– see also the InfoWIN Touch operating ma-
nual) and wait until burnout mode has finished (display is blank).
During filling, negative pressure is created in the pellet store and this can cause burn-back in the pellet boiler. Therefore,
the boiler must be stopped from operating during the filling procedure.
CAUTION Material losses
„To prevent negative pressure arising in the pellet boiler, open the combustion chamber door (Fig. 4 – see
also section „8. Opening the cladding door“) and leave open during the filling process.
Mo. 05.10.2015 / 08:00
Chimney sweep/
manual mode
Heating programs DHW program Actuator test
Operator level
Boiler ON/OFF Messages Basic settings
Fig. 3 Turn off the BioWIN 2 Touch Fig. 4 Open the combustion chamber door during the filling process
002357/00 01/2010
Befüllung Lagerraum
Filling date and volume
Remplissage du silo de stockage
Datum/Date/Date Menge/Volume/Quantité
kg
kg
kg
kg
kg
kg
kg
kg
kg
kg
kg
kg
kg
kg
kg
kg
kg
kg
kg
kg
kg
kg
kg
„Every time the storage room is filled, the date and vo-
lume should be recorded on the "Storage room filled"
sticker
Note.
Fuel delivery should be performed in accor-
dance with Super Premium Wood Pellets
listed in the Pellets Fuel Institute (PFI)
Standard with the delivery driver ade-
quately trained to deliver biomass wood
pellets.
Fig. 5 "Storage room filled" sticker on storage room door

13
Important information for system operators
6.1 Entering the pellet storage room, storage container
All energy sources are subject to safety regulations, which must be observed when working with fuels, heating systems,
and storage rooms. This also applies to pellet storage.
After the storage room is filled, odorless carbon monoxide (CO) may be produced, and there may be insufficient oxygen
present. For this reason, do not enter the pellet storage room for 6 weeks after it has been filled. Only persons trained
for working in confined spaces may enter the storage room for the purpose of measuring gas levels before any work is
carried out.
Please also follow the instructions on the pellet storage room safety notice:
– No access to unauthorised persons, keep children away from the pellet store.
– Ensure sufficient ventilation before entering. Keep the door open while inside.
– Only enter the storage room under the supervision of a second person standing outside. .
– No smoking, flames or other sources of ignition are permitted.
– Risk of injury from moving parts.
– Pellet boilers must be switched off at least 15 minutes before filling.
– Fill in accordance with the instructions of the boiler and pellet suppliers.
– Protect pellets from damp.
If you feel unwell, leave the storage room immediately and seek medical advice.
DANGER Attention, risk of suffocation.
Do not attempt to enter an unventilated storage room.
7. Safety instructions
DANGER Risk of fire or explosion.
Do not use chemicals or fluids to start the fire.
CAUTION Health and environmental hazard.
Do not burn garbage, gasoline, naphtha, engine oil, or other inappropriate materials.
WARNING Opening heating chamber door can crush and cut.
When opening door, never insert hands between the door and frame on the hinge side of the heating chamber.
WARNING Opening heating chamber door can crush and cut.
When closing door, never insert hands between the door and frame of the heating chamber. Be aware of other
people, especially children.
WARNING Entanglement hazard.
Do not open cover of auger conveyor when heating. Handle with care when servicing charging screw.
WARNING Ash tray can crush and cut.
Never insert hands between ash tray and frame. Never insert hands into closing bracket. Never insert hands
between ash tray and closing bracket.

14
Important information for system operators
WARNING Cover plate for pellet chamber can crush and cut.
Use caution when opening the cover plate. Only authorized personnel are allowed to open cover plate.
WARNING Closing pellet chamber door can crush and cut.
Never insert hands between door and frame, or between door and closing bracket of the pellet chamber when
closing the door. Never insert hands into the hinge area when opening door.
WARNING Opening pellet chamber door can crush and cut.
Never insert hands between door and frame on the hinge side of the pellet chamber when opening door. Ne-
ver insert hands between door and closing bracket.
WARNING Removing the ash tray can crush and cut.
Never insert hands between frame of boiler/heater and ash tray when removing the ash tray.
WARNING Mounting the ash tray can crush and cut.
Never insert hands between frame of boiler/heater and ash tray when removing the ash tray.
WARNING Displacing the ash tray can crush and cut.
When moving the ash tray, never insert hands between floor of the heating boiler and ash tray.
WARNING Pinch point hazard.
Never insert hands between the cover plate and housing of heating chamber when opening or closing.
DANGER Smoke gas.
Ensure adequate ventilation in the boiler room. Smoke gas may cause poisoning.
WARNING Hot water and hot steam. Injury hazard.
Safety devices (such as the relief valve) will open automatically and release hot water or hot steam. Keep
away from safety devices. Do not operate safety devices manually when system water is hot or when device
is in operation.
DANGER Attention. Risk of fire.
Lack of water can lead to fire in pellet hopper.
Do not operate this device when water level in water container is below minimum!
Do not use fluids other than pure water.
Monitor the water level monthly and refill to minimum level when necessary.
Always keep water container closed with original lid.- Art. no. 007073 - grip plug.
See BioWIN 2 Touch operating manual for monitoring and refill procedures.

15
Important information for system operators
DANGER Risk of fire or explosion.
Exposure may result in severe injury or death.
Do not fill with garbage, waste oil, gasoline, other flammable liquids, or any fuel other than those listed on
the rating plate.
Do not use chemicals to ignite fuel.
Do not use chemicals, sprays, or flammable substances to clean combustion room or any other burner com-
ponent.
Do not use boiler/heater cleaners.
Do not manually fill or light burner.
Do not smoke! Do not expose to open flame.
Do not expose to ignition sources.
Do not open combustion chamber door during operation, power failure, or alarms.
WARNING Fall hazard.
Do not sit, stand, or walk on machine. Keep children away.
DANGER Attention. Risk of fire.
Do not vacuum hot ash - may cause fire in vacuum cleaner.
Prior to vacuuming ash or dirt, wait until unit has shut down completely and has cooled for at least 2 hours.
WARNING Machine starts automatically.
Moving parts can crush and cut.
Do not remove guarding.
Do not touch rotating parts.
Keep children away.
Keep pets away.
DANGER Hazardous voltage.
Do not remove cover.
Keep away from electric components.
Disconnect power before servicing or cleaning.
WARNING Burn hazard – hot surface.
Do not touch frame, cover, or inside of heating chamber during heating.
Allow heating chamber to cool completely before cleaning and servicing.
Keep children and pets away from heating chamber.
Do not touch backside, chimney, or any other pipework during operation.
Maximum draft marked on nameplate.
WARNING Injury hazard.
All components/surfaces remain hot for a long period of time after turning off unit!
Before cleaning or touching combustion chamber or any other components, turn off unit completely and
allow to cool for at least 2 hours
Use heat-resistant gloves.
Use tools provided.

16
Important information for system operators
WARNING Health hazard.
Combustion particulates may contain harmful substances.
Use a fine-dust face mask during cleaning.
WARNING Rotating parts can crush and dismember.
Keep hands out of feed opening.
Do not remove cover during normal operation.
WARNING Hand crush hazard.
Automatic start-up if safety switch is activated.
Do not push safety switch.
Moving parts behind the combustion chamber door may start automatically, which can lead to loss of fingers
or other serious bodily injury.
Disconnect power before opening the combustion chamber door.
WARNING Risk of health hazard.
Do not connect to an existing boiler/heater system.
WARNING Crush hazard.
Open the cover of the electronic unit until it is secured in the open position. If not secured, it may fall unex-
pectedly.
WARNING Risk of hand injury.
Use caution when opening the cleaning flap, as it can open suddenly.
When opening the cleaning flap, use the tool provided and wear protective gloves.
WARNING Pinch point hazard.
Use caution when closing the cover of the smoke funnel chamber.
WARNING Crush hazard.
Remain alert and aware of surroundings when moving the machine with crane or fork lift.
DANGER Smoke gas.
Mount a warning plate against smoke gas on the boiler room door.
WARNING Health hazard.
In case of an unexpected fire or if flue pipe turns red, disconnect power if the plug, main switch, or main
circuit breaker is safe to reach. Call the fire department (911) and evacuate the building. Do not enter smo-
ke-filled rooms to disconnect power.
WARNING Injury hazard by hot water or steam.
Safety devices (such as relief or drain valve) will open automatically and relieve hot water or steam. Keep
away from safety devices. Do not manually operate safety devices when the system is hot.

17
Important information for system operators
WARNING Health hazard from chemical substances.
Some states list chemical substances known to cause cancer, birth defects, death, serious illness, or other
reproductive harm in propositions. This product may contain such substances, either from the fuel, fuel com-
bustion, or in components of the product itself.
WARNING Necessary tasks.
The heat exchanger, flue pipe, and chimney must be cleaned regularly to remove accumulated creosote and
ash. Ensure that the heat exchanger, flue pipe, and chimney are cleaned at the end of each heating season
to minimize corrosion during the summer months. The appliance, flue pipe, and chimney must be in good
condition. These instructions also apply to a draft inducer, if used.
WARNING Pellet feed system: service, maintenance and rules
The pellet feed system operates automatically. All service and maintenance must be completed by trained
specialists only. Do not alter the equipment or accessories in any way.
For use in combination with Windhager BioWIN 2 Touch pellet-fueled central heating boiler/furnace only.
Do not use to transport any material other than wood pellet fuel listed on the boiler nameplate or in the boiler
manuals.
Do not use for vacuum cleaning.
The pellet feed system starts automatically and will make noise. People who are easily startled or have car-
diac problems should keep away.
DANGER Pellet feed unit: Risk of fire or explosion.
Can lead to serious injury/death! Ground suction hoses must be installed as described in the installation
manual at every connection to avoid static sparking/dust ignition. The pellet feed unit is for use with the day
hopper only. The feed unit must be braced, anchored, or strapped to avoid falling/shifting during an earth-
quake. Instructions can be obtained from your local Windhager dealer or wholesaler.
Pellet feed automatic changeover unit: Fire and explosion hazard
Fire and explosion hazard can lead to serious injury or death.
Do not use the pellet feed automatic changeover unit inside pellet storage room or where there is a lot of
dust present. Connect delivery hoses to pellet feed automatic changeover unit as described in the installation
manual to avoid static sparking or dust ignition.
WARNING Pellet feed automatic changeover unit: injury hazard by moving
parts and electricity
Can lead to serious injury or death.
Device starts automatically. Device restarts automatically after power failure.
Do not remove cover.
This part should be serviced by trained personnel only.
WARNING Clearances and installation instructions
Minimum clearances from combustible or noncombustible construction:
2 inches left, 12 inches back, 24 inches top (right),
6 inches right side, 22 inches front.
Access to the back side is required to allow the service of parts such as the drain valve, relief valve, and
inspection fittings.
This unit is for dry indoor installation only. Not for installation on combustible flooring. Not for installation
in manufactured homes or mobile homes.

18
Important information for system operators
DANGER Risk of serious bodily injury or death.
This boiler/heater is equipped for one type of wood pellet only. Read the nameplate behind top lid for the cor-
rect type of pellet. Do not use this boiler/heater with any fuel other than the one listed on the name plate. Fai-
lure to use the correct fuel may cause problems resulting in death, serious bodily injury or property damage.
DANGER Attention. Risk of fire.
Do not operate with incorrect draft. Check nameplate behind top lid for correct draft.
Do not operate while refilling the bulk hopper.
Do not operate with door or ash removal covering open or when the ash box is removed.
Do not store fuel or other combustible material in the boiler room.
Regularly inspect and clean flues and chimney.
Have a trained professional regularly inspect safety devices, such as the relief and drain valves.
WARNING
For supply connections, only use 10 AWG or larger wires acceptable for at least 176 °F (80 °C) on a GFCI
circuit!

19
Operation
OPERATION
8. Opening the cladding door
WARNING Risk of burns
„Before opening the cladding door of the boiler, ensure that it is switched off via the ON/OFF button (see
Fig. 3) and allowed to cool down (display is blank).
„Raise the cover and remove; locate the Allen key.
„Insert the Allen key, turn a quarter turn to the left and open the cladding door – Fig. 6, Fig. 7.
1/4
Fig. 6 Open the cladding door with the Allen key Fig. 7 Cladding door open

20
Operation
9. Functional description, components and operating
controls BioWIN2 Touch
The BioWIN 2 Touch automatically fires when the control system signals a heating requirement. Following „purging“
(safety function), ignition starts and the pellet auger switches on. The burner bowl is automatically filled with pellets.
When flame formation has been detected (by the thermocontrol sensor), the boiler enters flame stabilisation mode and
then control mode (modulation) which maintains to the specified boiler temperature setpoint. The boiler enters burnout
mode if the output drops below the minimum nominal thermal output or no heating requirement is signalled by the
control system. The induced draught fan continues to run until the burner bowl has cooled down.
9.1 BioWIN2 Touch Klassik/Klassik-L
The boiler pellet hopper is loaded by hand. A motor moves the heating surface cleaning system vertically and the
heating surfaces remain clean. The cleaning residues from the heating surfaces drop into the rear ash chamber; the
combustion residues from the burner bowl drop into the ash pan. In the event of a cleaning request, the ash has to be
removed by hand.
1
2
34 5 6 7
8
9
10
11
12
1
2
345 6 7
8
9
10
11
12
Fig. 8 BioWIN 2 Touch Klassik
without cladding door or combustion chamber door
Fig. 9 BioWIN 2 Touch Klassik-L
without cladding door or combustion chamber door
16 17
15
13
14
Fig. 10 Cleaning and operating implements
1........... Pellet boiler pellet hopper
2........... Water tank for burn-back safeguard
(behind the boiler pellet hopper)
3........... Filling cover for pellet boiler pellet hopper
4 .......... T 6.3 A device fuse
5........... Safety thermostat auger tube
6 .......... Safety thermostat boiler temperature
7........... InfoWIN Touch display and operating unit
8 .......... Down chute
9 .......... Burner bowl
10 ........ Cover for the heat exchanger ash chamber
11 ......... Ash pan
12 ......... Drain cock
13......... Cleaning brush
14......... Spatula
15......... Allen key
16......... Scraper