Biodom C15 User manual

BIO
Instructions for use, maintenance and installation
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PELLET BOILER
BIO
DOM C15
Instructions for use, maintenance and installation
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Instructions for use, maintenance and installation

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We thank you for your purchase of Biodom boiler. We ask to thoroughly read instructions for use
before installing and using your pellet boiler Biodom. Heating appliances (in the following: "pellet
boiler" or "boiler") of company Biodom 2 d.o.o. (in the following: Biodom) are manufactured and
tested in accordance with safety requirements of European Directives in force.
These instructions are intended for end users, installers and authorized maintenance personnel for
Biodom pellet boilers. If you have any doubts regarding the instructions for use or require any
clarification, please contact the manufacturer or authorized person of company Biodom 2 d.o.o.
directly.
Printing, translation or reproduction, even in part, of the instructions of use is possible only upon
approval by company Biodom 27 d.o.o..
You have purchased a Biodom boiler, which is used for central heating of surfaces from 50 m
2
to 200
m
2
. he fuel for the boiler is wood pellets. he boiler operates automatically by dosing pellets with a
dosing screw from pellet container, which is a component part of device and is installed above the
boiler part of the device. he container is filled with pellets from above, through the provided cover.
Ensure that the incineration device is correctly dimensioned according to heating system and thermal
requirements of the building. Connection and start-up of the machine must be done by an authorized
person.
Flame, produced with correct burning of wood biomass inside the boiler, emits the same amount of
carbon dioxide (CO
2
) as with normal decomposition of wood.
he amount of CO
2
produced by the combustion or decomposition of wood corresponds to the
amount of CO
2
that a tree obtains from the environment and then transforms to oxygen and carbon.
he use of non-renewable fossil fuels (coal, fuel oil, gas), as opposed to what happens with wood,
releases into the air enormous amount of CO
2
accumulated over millions of years, which increases
the greenhouse effect. he principle of clean combustion fully meets all environmental require-
ments, and Biodom has based its entire development on this basis.
Last revision of instructions: April 2016

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INDEX
1. PURPOSE OF INSTRUCTIONS FOR USE ..................................................................... 5
1.1. UPDA ES .................................................................................................................................. 5
2. RESPONSIBILITY OF MANUFACTURER ...................................................................... 5
2.1. BASIC PREVEN IVELY REQUIRED S ANDARDS ......................................................................... 5
2.2. RANSPOR A ION AND HANDLING OF PELLE BOILER ........................................................... 6
2.3. RESPONSIBILI Y OF INS ALLER ................................................................................................ 6
3. INSTALLATION .........................................................................................................
3.1. PLACEMEN ............................................................................................................................. 7
3.2. EX RAC ION OF SMOKE GASES ............................................................................................. 11
3.3. INSULA ION AND DIAME ER OF HOLES IN HE ROOF .......................................................... 13
3.4. INLE AIR ............................................................................................................................... 13
3.5. ELEC RICAL CONNEC ION ..................................................................................................... 14
4. BOILER COMMISSIONING ..................................................................................... 15
5. SAFETY WARNINGS ............................................................................................... 16
5.1. SAFE Y WARNINGS FOR MAIN ENANCE S AFF .................................................................... 16
5.2. SAFE Y WARNINGS FOR USER ............................................................................................... 16
6. INSTRUCTIONS FOR SAFE IGNITION AND CLEANING OF BOILER ............................. 18
6.1. REGULAR MAIN ENANCE AND CLEANING OF BOILER .......................................................... 18
6.2. CON ROL AND PAR S REQUIRING MAIN ENANCE ............................................................... 20
6.3. ADDI IONAL MAIN ENANCE ................................................................................................. 21
. IMPORTANT SAFETY INFORMATION ...................................................................... 21
8. PELLET QUALITY IS VERY IMPORTANT .................................................................... 22
8.1. S ORING PELLE S .................................................................................................................. 23
9. DESCRIPTION AND OPERATION OF CONTROL DEVICE ............................................ 24
9.1. BOILER DURING OPERA ION ................................................................................................. 26

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9.2. BOILER SHU DOWN .............................................................................................................. 27
9.3. BOILER AC IVA ION ............................................................................................................... 27
9.4. IME PROGRAMME SE ING ................................................................................................ 27
9.5. INDICA IONS AND MESSAGES ON DISPLAY ........................................................................... 29
10. MENU ................................................................................................................... 31
11. ALARM STATUSES ................................................................................................. 32
12. INFORMATION REGARDING DESTRUCTION AND DISPOSAL OF BOILER ................... 39
13. WARRANTY CONDITIONS ...................................................................................... 39
14. TECHNICAL CHARACTERISTICS OF MODEL BIODOM C15 ........................................ 42
15. DIMENSIONS OF BOILER BIODOM C15 .................................................................. 43
16. INSTRUCTIONS FOR FIRST START-UP ..................................................................... 44

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1. PURPOSE OF INSTRUCTIONS FOR USE
he purpose of instructions for use is that the user takes all necessary measures and prepares all
required equipment to ensure safe and proper use of combustion device.
1.1. UPDA ES
hese instructions reflect the state of the product at the moment the boiler is produced.
Instructions are not applicable for products, which are already present on the market with corre-
sponding technical documentation and cannot be considered as insufficient or inadequate after any
modification, adaptation or application of new technologies on newer products.
he content of this booklet must be carefully read and heeded to. All of the information, contained in
this booklet, is necessary for correct installation, use and maintenance of you boiler.
he instructions must be stored carefully and safely. Instructions for use, maintenance and
installation are a component part of pellet boiler.
If the pellet boiler changes ownership to another person, this person must also receive these
instructions for use, together with the boiler.
If the instructions get lost, request for a new copy of instructions from the manufacturer, authorized
reseller or repairman.
2. RESPONSIBILITY OF MANUFACTURER
In providing these instructions, Biodom 27 d.o.o. rejects any civil or penal liability, direct or indirect,
due to:
•accidents caused by non-compliance with standards and specifications from these
instructions;
•accidents caused by prohibited or incorrect use by the user;
•accidents caused by modifications and repairs not authorized by manufacturer Biodom 27
d.o.o.;
•poor maintenance;
•unforeseeable events;
•accidents caused by use of non-original or improper spare parts.
he installer is fully responsible for installation.
2.1. BASIC PREVEN IVELY REQUIRED S ANDARDS
Product Biodom C15 is manufactured in accordance with the following standards:
DIREC IVE EC ON MACHINERY (2006/42/EC);
DIREC IVE EC ON LOW-VOL AGE EQUIPMEN (2014/35/ES);
DIREC IVE EC ON ELEC ROMAGNE IC COMPA IBILI Y (2014/30/ES);

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Harmonized standards:
•EN 303-5:2012
•EN 60335-1:2012+A11:2014
•EN 6100-6-3:2007+A1:2011
•EN ISO 12100:2010
•EN 60335-2-102:2006+A1:2010
•EN 60204-1:2006+A1:2009
•EN 60529:1992+A2:2013
2.2. RANSPOR A ION AND HANDLING OF PELLE BOILER
When moving the boiler, pay attention to your safety.
Before transport and handling of the boiler, which must be performed in complete safety, make sure
that the lifting capacity of transport equipment suffices. Avoid sudden and/or abrupt movement of
boiler.
ATTENTION
DISCARD ALL PACKAGING OUT OF REACH OF CHILDREN. DANGER OF SUFFOCATION WITH
BAG, FOIL, POLYSTYRENE ETC.
2.3. RESPONSIBILI Y OF INS ALLER
It is the responsibility of the installer to check adequacy of installation and pipeline, ensure air intake
for combustion, ensures regulated distances and all other solutions, required for installation of the
pellet boiler.
It is the responsibility of the installer to ensure compliance with local legislation in force in the place
of pellet boiler installation.
Use of the pellet boiler must conform with instructions, provided in Instructions for use, maintenance
and installation, and all safety standards, specified by local legislation in the place of pellet boiler
installation.
Standard UNI 10683 defines duties of installer. he installer must check:
•type of device to be installed;
•adequacy of space for installation of unit, reflected by minimum required size of the space, in
which the pellet boiler will be installed;
•instructions of the manufacturer about heating device, regarding requirements of smoke
gases outlet;
•flue pipe internal diameter, the material it is made of, is it straight or even and that there are
no obstructions;
•height and, if required, vertical extension of flue pipe;
•existence and suitability of flue pipe cover resistance;
•possibility of outside air intake;

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•possibility of simultaneous use of generator for connection with other equipment.
If the results of all above provided checks are positive, installation may proceed. Carefully heed to
instructions provided by the manufacturer, as well as safety and fire prevention standards in force.
After the first start-up of the boiler, perform a minimum 30-minute test of operation to check all
required demands.
When the installation is complete, the installer must provide the customer with the following:
•instructions for use, maintenance and installation from the manufacturer (if not included in
the unit);
•required documentation in accordance with standards in force;
•perform training of customer for operation and regular maintenance and cleaning of the
device.
3. INSTALLATION
Responsibility for installation work in the space is entirely upon the customer.
Before proceeding with installation, the installer must comply with all required legal safety standards,
especially:
•check that norms regarding pellet boiler installation meet local, national and European
norms;
•heed to requirements set forth in this document;
•check that pipes and air intake are compliant with the type of installation;
•do not make temporary electrical connections by using unsuitable cables;
•check earthing of electrical system;
•always use individual safety equipment and all legally required protection;
•always allow sufficient space for maintenance work;
•acquire consent of chimney sweep for connection of boiler to flue;
•perform measurement of smoke gases outlet after finished installation.
3.1. PLACEMEN
It is advisable to remove pellet boiler packaging only when it is in the place of installation.
If the adjacent walls and/or flooring are made of material that is not heat resistant, suitable
protection must be provided using insulating, non-combustible material.
For protection of flooring, made of flammable material, we advise installing a metal plate with
thickness 3 to 4 mm under the boiler, which protrudes at least 30 cm out from the front of the pellet
boiler.
Pellet boiler must be installed in accordance with drawing that defines distances from walls (figure 1).

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Figure 1: Minimum distance of boiler from boiler room walls
If the pellet boiler is installed in a boiler room, where there are other devices, which drain air (other
boiler, various suction fans etc.), make sure that the volume of air intake is sufficient for safe
operation of combustion device.
If the smoke duct passes through a ceiling, it must be properly insulated using diaphragm of non-
combustible insulation material.
When the pellet boiler is placed, it must be levelled with support feet (horizontal positioning).
ATTENTION
Smoke gas discharge MUST NOT BE CONNECTED TO:
•flue pipe, used by other combustion devices (boilers, stoves, fireplaces etc.);
•air extraction systems (hoods, air extraction fans etc.).
Flue pipe

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ATTENTION
Installation of draught closing valves is prohibited!
Flue connection Ø 80 mm from pellet boiler to flue pipe should be:
•no more than 5 m long (in case of longer connection, dimension of connection pipe
must increase to Ø 130 mm);
•each 90° joint requires a 1 m shorter flue connection;
•each joint must be fitted with doors for cleaning;
•connections between pipes must be sealed.
ATTENTION
If there is too much resistance in extraction system (many joints, improper end fitting,
bottlenecks etc.), extraction of smoke gases is not provided for. Therefore, connection pipes
and joints must be increased to a greater dimension – Ø 130 mm. If the flue does not ensure
appropriate extraction of smoke gases, it can also come do improper operation and,
consequently, to alarm from boiler Biodom C15. It is advisable that the flue is inspected by
an expert before installing boiler Biodom C15.
Smoke gases extraction system from pellet boiler functions on the basis of negative pressure in the
boiler and barely perceivable pressure in flue connection pipe Ø 80 mm. It is very important that the
smoke gases extraction is sealed.
Layout and structure of the space, where the flue is installed, needs to be analyzed. If it passes
through walls and/or roof, it must be properly installed in accordance with fire prevention safety
standards.
Ensure that there is enough air for proper combustion in the space, where the pellet boiler is
installed. If boiler Biodom C15 lacks oxygen/air, the boiler displays an alarm. External supply or intake
of external air requires a pipe with a diameter of at least 110 mm with maximum length of 10 m. Each
90° joint requires a deduction of 1 m in line length. If the air supply is longer, diameter of air intake
pipe must be increased.
In case of a grid on the facade, draught opening must be 100 cm² or larger.
he device operates at 220 V – 50 Hz. Make sure that the electrical cables are not laid under the
boiler, that they are far away from hot surfaces and that they do not touch sharp parts, which could
damage them. If the pellet boiler is under electrical overload, life expectancy of electrical component
greatly reduces.

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ATTENTION
Never turn off the boiler by pulling the electrical cable from the socket, while fire is still
burning in the boiler. This could damage the boiler and seriously jeopardize its functioning.
3.2. EX RAC ION OF SMOKE GASES
Extraction of smoke gases must be in accordance with regulations in force. Pipes for smoke gases
must not be connected to other discharge pipes of any other combustion device (figure 2). It is
prohibited to set up extraction of smoke gases into closed and/or semi-closed spaces, e.g. garage,
narrow passages or hallways, underpasses or any other similar spaces. If the flue connection is not
suitable, it must be implemented in accordance with previously provided requirements (point 3.1).
Figure 2
ATTENTION
Extraction of smoke gases must be earthed in accordance with regulations in force. (Earthing
connection is required by law).
Earthing must be independent of combustion unit.
Regarding dimensions and material, from which it is made, the flue pipe must conform to standards
UNI 9615-9731, UNI 10683 - EN1856-1.
Flue pipes in poor condition and/or made of unsuitable materials (asbestos, zinced sheet metal etc.,
with rough or porous surfaces) are prohibited by law and compromise proper boiler operation.
YES
NO

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Smoke can be extracted through a traditional flue pipe (see figure below) provided that the following
rules are met:
•check condition of flue pipe maintenance. For proper maintenance and/or restoration
contact chimney sweep service;
•extraction of smoke gases can be connected directly to flue pipe only if it has a maximum
dimension of 20 x 20 cm or diameter of 20 cm and is fitted with inspection hole;
•if the flue pipe is of greater dimensions, a stainless pipe (with required diameter) with proper
insulation must be installed into it;
•make sure that the connection with the flue pipe is properly sealed;
•avoid contact with flammable material (such as wood ashes), and, in any case, insulate them
with fire-resistant material.
When using connections between the pellet boiler and flue pipe, it is mandatory to use joints with
cleaning doors (figure 3). Use of joints with cleaning doors enables regular cleaning without the need
to disassemble pipes. Exhaust fumes in flue connection are under slight pressure. herefore, it is
compulsory to check that the cover for cleaning ash is completely hermetically closed and that it
remains in this state after each cleaning. Ensure proper reassembly and check condition of the seal.
Figure 3: Cleaning unit
Connection between pipes must be always made with male fitting turned upwards (figure 4).
It is advisable to avoid using horizontal connections of pipes to flue. If this is not possible, the pipes
must not be installed in a downwards angle, but at an upwards angle of at least 5 % (figure 5).
Horizontal installation of pipes must not exceed 2 m in length.
It is not advisable to connect the pipe from the pellet boiler directly to flue with horizontal pipe,
longer than 1 m.

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Figure 4 Figure 5
3.3. INSULA ION AND DIAME ER OF HOLES IN HE ROOF
Once the position of boiler installation is determined, a hole for passage of smoke pipes must be
made. his changes in regard to the type of installation, diameter of smoke pipes and type of wall or
roof, through which it must be guided. Insulation must be of mineral origin (rock wool) with nominal
density greater than 80 kg/m³.
Perfect draught depends mostly on flue pipe, which must be free of obstructions, such as bottlenecks
and/or various joint connections. Joint must be at an angle of 30°, 45° and 90°. Joints at an angle of
90° must be made of three parts (figure 6).
In any case, it is mandatory to provide an initial vertical straight pipe of 1,5 metres in length
(minimum) to ensure correct extraction of smoke gases.
Figure 6
3.4. INLE AIR
Air from the environment, required for correct combustion, must be refreshed with new air, through
opening in the wall, slot in boiler room doors or grid on the window. his will ensure proper
combustion and proper boiler operation.
Opening for intake of fresh air must also be fitted with protective slot against rain, wind and insects.
Hole must be made on the external wall of the space, where the pellet boiler is installed.
Standard UNI 10683 prohibits intake of inlet air from storage of flammable materials or spaces with
the risk of fire.
NO
YES
5 % or
more
Direction of smoke
gases

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If there are other combustion devices in the room, a sufficient amount of air must be ensured, which
is required for proper combustion of all combustion devices, and regard all technical properties of
already installed ventilation systems in the boiler room.
Figure 7
3.5. ELEC RICAL CONNEC ION
Combustion device requires connection to electrical network. Our pellet boilers are fitted with power
supply cable for medium temperatures. If the power supply cable is damaged and must be replaced,
contact our service staff.
Before making electrical connections, make sure that:
•the characteristics of electrical wiring meet the data, given on the combustion device;
•extraction of smoke gases is earthed in accordance with regulations and local requirements
in force. (Earthing is required by law);
•power supply cable must never reach 80 °C above ambient temperature. If you want to
connect the boiler directly to electrical network, you must install a bipolar switch with
minimum distance of 3 mm between contacts, suitable for required electrical voltage and in
accordance with regulations in force. Bipolar switch must always be accessible, even after the
boiler is installed.
Electrical connection
he pellet boiler must be connected to electrical network. Power supply cable is 3 m long, white and
designated with "220 V". Other connection cable is intended for connection of pump, is black and
designated with "Pump".

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Figure 8
If the power supply cable is damaged, it must be replaced. It can only be replaced by an authorized
person.
Electrical connection must be easily accessible even after the pellet boiler is installed.
ATTENTION
When the boiler installation is finished, it is mandatory to perform measurements of smoke
gases discharge.
4. BOILER COMMISSIONING
Boiler commissioning can be performed only by a manufacturer authorized technician, otherwise
the warranty is void.
INS RUC IONS FOR SAFE Y OF PERSONS, ANIMALS AND PERSONAL PROPER Y
We wish to inform the installer on some general guidelines, which must be complied with for correct
installation of pellet boiler. hese are required standards, but are not sufficient; for further and more
detailed information it is necessary to read the rest of the Instructions for use, maintenance and
installation.
•Connect the pellet boiler to electrical network.
•Do not allow children or animals in the boiler area.
•Use only quality pellets and no other types of fuel.
•Inform all users on possible risks and hazards, and educate them on handling the pellet boiler.
•If the pellet boiler is placed on a wooden floor, it is advisable to protect the floor in
accordance with regulations.

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ATTENTION
The pellet boiler operates by creating negative pressure in the combustion chamber.
Therefore, ensure that the extraction of smoke gases is thermally sealed.
Upon first start-up (minimum operation of boiler – 1 hour), paint evaporates fumes, which
have unpleasant odour. Therefore, ventilate the room afterwards.
5. SAFETY WARNINGS
5.1. SAFE Y WARNINGS FOR MAIN ENANCE S AFF
Along with adhering to general safety regulations, maintenance staff must also:
•always use safety devices and individual safety equipment according to Directive 89/391/EEC;
•disconnect power supply before commencing any work;
•always use suitable tools;
•before commencing any work on the boiler, ensure that the boiler, as well as the ashes in it,
are cold, especially before touching it;
•PELLET BOILER IS NOT TO BE CONSIDERED USABLE, IF EVEN ONE SAFETY DEVICE IS
MALFUNCTIONING, INCORRECTLY REPAIRED OR NOT FUNCTIONING;
•do not perform any modifications of any type for whatever reason other than those allowed
and/or approved by the manufacturer or authorized person;
•always use original spare parts. Do not wait for boiler components to wear out before
replacing them. Replacing a worn-out part, before it malfunctions, helps prevent injuries,
caused by sudden failure of a component, which can seriously jeopardize persons and/or
their property;
•when cleaning ash, also clean the combustion container and space beneath it.
5.2. SAFE Y WARNINGS FOR USER
Space, where the pellet boiler will be placed, or installation area, must be in accordance with local,
national and European directives.
he pellet boiler is a combustion device and external surfaces of the boiler can reach higher
temperatures during operation.
he pellet boiler is produced exclusively for burning wood pellets (pellets of 6 mm in diameter and
30 mm in length with maximum moisture content up to 10 %) or for fuel A1 (wood pellets) in
accordance with standard EN 14961-2.

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ATTENTION
DURING PELLET BOILER OPERATION, CHILDREN ARE PROHIBITED TO COME NEAR OR PLAY
WITH IT!
When using a combustion device, it is advisable to take special care of the following:
•during boiler operation DO NO approach it and do not touch the doors of combustion
chamber, because of DANGER OF BURNS;
•during boiler operation DO NO approach it and do not touch the flue connection, because of
DANGER OF BURNS;
•during boiler operation DO NO perform any kind of cleaning on the combustion device;
•during boiler operation do not open the doors of the firebox, because it operates properly
only when its doors are hermetically sealed (if you open the doors during operation, an alarm
will sound);
•during boiler operation DO NO remove ashes;
•DO NO allow children and animals to come near the pellet boiler;
•ADHERE O REQUIREMEN S SE FOR H IN HIS DOCUMEN .
For correct use of the boiler, also heed to the following instructions:
•use only and exclusively fuel recommended by boiler manufacturer;
•follow instructions for maintenance;
•clean the boiler firebox for each pellet container used (3-14 days, when the pellet boiler and
ashes in it are cool);
•DO NO use the pellet boiler in case of operation malfunction or other irregularities,
abnormal noises and/or suspicious faults and IMMEDIA ELY contact authorized service
personnel;
•DO NO spill water on the boiler, as well as put out fire in the combustion chamber with
water;
•DO NO lean on the boiler, as it may be unstable and could tip over;
•DO NO use the pellet boiler as support or a fastening item. Do not leave the container cover
open;
•DO NO touch the painted surfaces of the boiler during operation;
•DO NO use wood or charcoal in the pellet boiler, use only pellets with the following
properties:
- dimension: diameter 6 mm,
- maximum length: 30 mm,
- moisture content: up to 10 %,
- combustion value: minimum 16,9 MJ/kg or 4,7 kWh/kg,
- ash content: below 0,7 %;
•DO NO use the boiler as an incinerator;
•always ensure maximum safety.

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6. INSTRUCTIONS FOR SAFE IGNITION AND CLEANING OF
BOILER
NEVER use fuel oil, lamp oil or any other oil or any other flammable liquid to ignite the pellet boiler.
Store all such liquids far away from the pellet boiler during operation.
Ensure that the pellet boiler is positioned properly and that it does not move.
Ensure that you have closed the firebox properly, and that it is closed during operation of the pellet
boiler.
Vacuum ashes only when the pellet boiler is cool.
Do not use abrasive products to clean the pellet boiler.
6.1. REGULAR MAIN ENANCE AND CLEANING OF BOILER
Use of vacuum cleaner with separator will make cleaning ashes from the boiler easier.
Before starting any kind of maintenance, also cleaning, heed to the following safety precautions:
•shut off the pellet boiler before performing any kind of work;
•before performing any kind of work on the boiler, make sure that the ashes in the boiler are
cool.
Vacuum ashes from the combustion at least once every ten days or at each used pellet container
(only when the boiler is cool) (figure 10).
Vacuum and carefully clean the combustion container at least once every ten days or at each used
pellet container (only when the boiler is cool) (figure 10).
Once a month, remove the front door at the bottom of the exchanger on the right side of the boiler
and vacuum the inside (figure 10).

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Figure: 9
Always make sure that the pellet boiler and ashes in it are cool.
his is the combustion container for burning pellets (figure ). We recommend inspecting and
cleaning ashes from the bottom of combustion chamber upon each cleaning. When you place the
combustion container back in its place, make sure that it is set correctly: it must be pushed towards
the back wall all the way. Only then you can be sure that the boiler will function properly.
Figure 10
2 he hole for inserting the heating
element to burn fuel
1 For the best operation of
the stove, all holes must be
free of ash

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ATTENTION
Be careful that the sealant rope under the edge of combustion chamber is not damaged. If
the sealant rope is damaged, contact an authorized service centre.
If you require any explanation do not hesitate and contact your installer. Because the manufacturer
has no control of the installer's work, he cannot guarantee performance of his work and
maintenance.
The manufacturer shall in no way be held responsible for damages caused by third parties.
ATTENTION
Ensure that the pellet boiler and ashes in it are cool!
he combustion chamber must be cleaned after each used pellet container, vacuumed and/or
emptied of all impurities remaining after the pellets have burned.
Never put pellets which have not burned back in the pellet container or ash box.
6.2. CON ROL AND PAR S REQUIRING MAIN ENANCE
CHECK HE FOLLOWING I EM AND MAKE SURE HA HE PELLE BOILER IS OPERA ING PROPERLY.
HIS WILL INCREASE I S EFFICIENCY AND HE EMI ED HEA IN O HE SYS EM WILL ALSO INCREASE:
Ensure that the pellet boiler and ashes in it are cool!
•For perfect cleaning, vacuum ashes from beneath the combustion container and from
combustion chamber every week or at each 45 kg pellet container used (whichever comes
sooner). Use a broom or a brush to clean firebox walls.
•Clean the fan for extraction of smoke gases by removing fan protection and cleaning fan
blades with a broom or a brush.