ARTE MENTOR ST 80 User manual

TABLE OF CONTENTS
1. Arte® Fireplace - A Greek Quality Product................................................................................................................................................................ 1
2. Facts about the wood and the environment............................................................................................................................................................ 1
2.1. Why should I use wood? ........................................................................................................................................................................................................1
2.2. Buying firewood ......................................................................................................................................................................................................................1
2.3. Storing your wood...................................................................................................................................................................................................................1
2.4. Wood types and calorific value ...........................................................................................................................................................................................2
2.5. Determining the heat output ................................................................................................................................................................................................3
3. Endorsements and certifications ................................................................................................................................................................................. 3
3.1. Endorsement............................................................................................................................................................................................................................3
3.2. Features marking plate ..........................................................................................................................................................................................................3
4. Packaging ....................................................................................................................................................................................................................... 4
4.1. Unpacking the fireplace........................................................................................................................................................................................................4
5. Installation and fire safety ............................................................................................................................................................................................. 5
5.1. Height adjustment, leveling of the fireplace & door’s counterweights adjustment.....................................................................................................5
5.2. Safety distances ......................................................................................................................................................................................................................5
5.3. Wooden beams protection...................................................................................................................................................................................................5
5.4. General safety instructions ....................................................................................................................................................................................................5
5.5. Flue safety instructions............................................................................................................................................................................................................6
-Basic requirements for proper flue operation ........................................................................................................................................................................6
-Chimney placement..................................................................................................................................................................................................................6
-Chimney cap………. ..................................................................................................................................................................................................................7
5.6. Connecting the fireplace with the flue ...............................................................................................................................................................................8
5.7. Air intake connection.............................................................................................................................................................................................................8
5.8. Hot air abduction....................................................................................................................................................................................................................9
5.9. Fireplace with galvanized covers and hot air system ( Optional )..................................................................................................................................9
-Hot air outlet……….....................................................................................................................................................................................................................9
-Connection of motor and thermostat...................................................................................................................................................................................10
5.10. Installation examples with hot air supply to more than one room ..............................................................................................................................12
6. Usage instructions......................................................................................................................................................................................................... 13
6.1. Before the first use of the ARTE® MENTOR fireplace ........................................................................................................................................................13
6.2. About the ARTE® MENTOR fireplace..................................................................................................................................................................................13
6.3. General information .............................................................................................................................................................................................................14
-When the fireplace paint dries...............................................................................................................................................................................................14
-Incineration preparation .........................................................................................................................................................................................................14
-Combustion air intake..............................................................................................................................................................................................................14
-Power failure (when there is a motor) ...................................................................................................................................................................................14
-Heating during seasonal change or in adverse weather conditions ...............................................................................................................................14
-ADF function………… ...............................................................................................................................................................................................................14
6.4. Usage of the detachable handle (“Cold handle”).........................................................................................................................................................15
6.5. Adjustment of combustion air.............................................................................................................................................................................................16
6.6. Setting and function of the thermostat (Optional)..........................................................................................................................................................16
7. Lighting the fireplace................................................................................................................................................................................................... 17
7.1. Traditional method of lighting .............................................................................................................................................................................................17
7.2. Lighting without CO emissions (FROM TOP TO BOTTOM) ................................................................................................................................................18
7.3. Safe handlings in case of wrong functioning ...................................................................................................................................................................18
7.4. Smoke escape in the room .................................................................................................................................................................................................18
8. Tertiary combustion...................................................................................................................................................................................................... 19
9. Cleaning and maintaining the fireplace.................................................................................................................................................................. 19
9.1. External maintenance..........................................................................................................................................................................................................19
9.2. Internal maintenance ..........................................................................................................................................................................................................20
-Ash disposal………… ................................................................................................................................................................................................................20
-Glass ……………… ....................................................................................................................................................................................................................20
-Gasket………………….. ............................................................................................................................................................................................................21
-Internal parts that need maintenance .................................................................................................................................................................................21
9.3. Cleaning the fireplace and the flue ..................................................................................................................................................................................22
-Chimney sweeping ..................................................................................................................................................................................................................22
-Annual maintenance...............................................................................................................................................................................................................22
-How to clean the inside parts of ARTE® MENTOR ................................................................................................................................................................22
9.4. Internal parts..........................................................................................................................................................................................................................23
-Removal of the 1st baffle .........................................................................................................................................................................................................23
-Removal of the 2nd baffle........................................................................................................................................................................................................23
-Removal of the 3rd baffle.........................................................................................................................................................................................................23
-Removal of side vermiculites ..................................................................................................................................................................................................24
-Removal of back vermiculites ................................................................................................................................................................................................24
-Removal of the bottom vermiculites (Floor) .........................................................................................................................................................................24
-Removal of the bottom vermiculites (Front side).................................................................................................................................................................24
9.5. Inactive fireplace for prolonged periods ..........................................................................................................................................................................24
10. Tips and tricks for resolving issues ............................................................................................................................................................................. 25
11. Dimensions and technical specifications............................................................................................................................................................... 26
12. Notes ............................................................................................................................................................................................................................ 28

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1. ARTE®FIREPLACE -AGREEK QUALITY PRODUCT
Thank you for buying an ARTE® fireplace - we believe that you will have as much pleasure from our product as we
have, producing it.
Your ARTE® fireplace is made in such a way, to extract the maximum possible energy from the wood with the minimum
possible emissions, using the most innovative technology and the most robust design –one product made in Greece!
These instructions contain interesting and informative facts and all you need to know about the subjects of heating,
wood, and operating your ARTE®fireplace. Please read these instructions carefully before using your fireplace for the
first time and keep them for future usage.
2. FACTS ABOUT THE WOOD AND THE ENVIRONMENT
2.1. Why should I use wood?
With proper forest management, burning wood does not deplete the earth’s resources. Heating with wood usually
does not contribute to global warming. The young trees that replace the trees that you burn in your fireplace absorb
carbon dioxide (CO2) from the air. Burning firewood releases only as much CO2as the tree has absorbed from the
atmosphere during its growth. Similarly, wood rotting in the forest generates the same amount of CO2as the same
wood burning.
Besides being environmentally friendly, the heat from a fireplace warms you like the warming rays of the sun during the
sunny winter days. It is the radiated heat that is transmitted by electromagnetic waves in the infrared range. Even
when the air is very cold you can feel the warm rays of the sun on your skin.
Another advantage of wood is that it is produced locally, which creates local employment, and more tax revenues
stay in the province.
2.2. Buying firewood
Where can I get my firewood?
Regenerated ready-to-burn firewood can be purchased from dealers:
Fireplace ready, stored for at least two years
Pre-dried, stored for one year
Fresh from the forest
Whether you have cut your own wood or bought it, the important thing is that: the wood should be dried for at least
two years before it is burned.
2.3. Storing your wood
The full potential for heat will not be realized if
you neglect the simple but necessary chore of
piling and protecting your wood. Proper storage
is essential to avoid moisture, bacteria, and
insect problems in your home.
To avoid problems with insects and moisture,
store the wood as far from your house as is
practical. Do not store wood in your basement;
one cord of wood (4 m3) can give off more than
500 liters of water. The basic rule is to protect the
wood from water, but not from the sun or wind
(Pic. 2.3.1 & 2.3.2) Green wood will dry slowly or not at all if unprotected, while seasoned wood left unprotected may
become unseasoned.
The ideal residual moisture is 12 - 15% and should be no higher!
The manuals which are enclosed with the product must be kept throughout th e product’s
entire service life. They are also available online in our website.
Pic. 2.3.1
Pic. 2.3.2

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There are three basic rules to follow when storing wood:
Allow air circulation by piling the wood alternately (one layer across –one layer
widthwise), if possible.
Protect wood from rain and snow by covering it with a tarp or woodshed roof. Otherwise,
place it under a shed with a wooden roof.
Pile wood off the ground on scrap lumber or wooden pallets.
The time-honored way to cure wood is to buck, split, and stack wood off the ground for
one full year. Although wood can generally be reduced to 20 per cent moisture content in
two to three months, the ideal 10% to 15% may take longer (almost 18 months).
2.4. Wood types and calorific value
A wood’s efficiency does not depend only on its type, but
also on its humidity, as well as the temperature of the
combustion chamber.
For more efficient and longer burning, without emission of
hazardous substances, woods must be dry. Ideally, their
humidity percentage must not exceed 10% to 15%.
If this percentage is over 20%, the wood is not burned
properly, whereas if the piece of wood has been cut
recently, the humidity is over 60% making it unsuitable for
burning. The reason for that is that the fire will be weak
and pale and will produce dense smoke, unburned tar
and creosote, soiling the ceramic glass and the flue.
It is preferable to get your wood supplies during the summer months and store them, to ensure better combustion
quality during the winter.
Useful tips
Always choose dry firewood.
Avoid wood that pops (chestnut, conifers such as cedar, spruce and pine), as they may damage your fireplace or the
flue.
Pay attention to the size of the logs. Good firewood must have been cut at least twice.
You should prefer oak, beech, olive wood, which is hard wood with high density since they will burn for longer.
Briquettes
They ignite very easily, and burn slowly. They are economically advantageous because you will burn smaller quantities
compared to common firewood and they are easily stored. Also, you have less quantity of ashes in comparison to
wood.
Birch
It’s a soft wood that ignites easily with great thermal energy production. It produces less smoke and ash compared to
other wood and burns silently. The same characteristics apply for lime and chestnut.
Beech
Hard wood is ideal for firewood but requires a high temperature to ignite. It weights a lot; it is dense and burns with a
calm and long fire for a longer time. Best when well seasoned. The same applies for oak, but seasoned for 2-3 years.
Every type of wood has its own calorific value.
The values are based on 15% residual wood moisture.
Wood type
Briquette
Birch
Walnut
Oak
Beech
Fir
Common Oak
Pine
Olive
Calorific value
(Kcal/Kg)
5.000
4.800
4.731
4.619
4.578
4.588
4.548
4.457
4.100
860Kcal/h = 1 kW/h
Table 2.4.1
An ARTE®fireplace can be fired with all of the above wood types.
WET
DRY

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2.5. Determining the heat output
There is not a specific rule that enables the calculation of the required heat output. This depends on the amount of
space that is required to be heated and mostly on its insulation. In average the required heat output for a properly
insulated room and with external temperature of 0 οC is 40 kCal/h per m3.
Taking into account that 1kW equals 860 kCal/h an equivalent of 50W/m3can be used. For example, to heat a 150 m3
room (10 x 6 x 2.5m) in an insulated residence, the output required is 150m3x 50W/m3= 7500W or 7.5 kW.
So, for the main heating, a 10kW appliance is enough.
Indicative combustion
value with efficiency ~80%
Required amount relative
to 1kg dry wood
Fuel
Unit
kCal
kW
Firewood (moisture 15%)
kg
3600
4.2
1.00
Firewood (moisture 50%)
Kg
1850
2.2
1.95
Wood briquettes
Kg
4000
5.0
0.84
Coal briquettes
Kg
4800
5.6
0.75
Coal
Kg
7700
8.9
0.47
Coke
Kg
6780
7.9
0.53
Gas
m3
7800
9.1
0.46
Diesel
L
8500
9.9
0.42
Electricity
kW/h
860
1.0
4.19
Table 2.5.1
3. ENDORSEMENTS AND CERTIFICATIONS
3.1. Endorsement
The ARTE® fireplace you chose has been tested according to EN13229. The declaration of performance (DoP) of each
MENTOR model can be found at the URL of the company for each model.
3.2. Features marking plate
ARTE® fireplace’s feature marking plate is located on the right side of the appliance.

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4. PACKAGING
ARTE® is devoted in protecting the environment, so we use as much recyclable materials as possible and the least
amount of packaging materials without compromising the secure transfer of our products.
4.1. Unpacking the fireplace
1. Your product will be delivered on a wooden palette which is lined with wooden side panels (Pic. 4.1.1).
2. Firstly remove the side panels. (Pic. 4.1.2)
3. Because of sharp objects, carefully remove the plastic membrane and the waterproof plastic film and also all the
polystyrene on the outside and inside of the product.
4. Unscrew the 4 screws located on the bottom side of the product, in order to release the fireplace from the palette.
(Pic. 4.1.3)
Pic. 4.1.1
Pic. 4.1.2
Pic. 4.1.3
5. Carefully lift up the product and place it on the installation point, making sure that the floor can withstand the
weight of the device. Also, make sure you provide proper insulation in case the floor is built using flammable
materials.
For the lifting, use 2 shackles and a belt (Fig 4.1.4). (Not included inside the package). Information about the
weight of the device can be found at Table 11.2. The products that you will use for the lifting must be able to
lift up the device with safety.
If you bought the lifting system with the handles (Fig 4.1.5), place them at the corresponding sockets and
secure them with allen screws M6x10 (detail).
6. . For safety reasons during transportation, the door is secured at the upper open position. To release the door,
remove the bottom, right and left hexagon screws, which fix the counterweights (Pic. 4.1.6).
Pic. 4.1.4
Pic. 4.1.5
Pic. 4.1.6
The wheels which are fitted on the legs of the device, let you do small movements till
the final installation place.

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5. INSTALLATION AND FIRE SAFETY
During the installation of the fireplace, It is OBLIGATORY to respect the National and European rules and local
regulations concerning building matter and fireproof rules.
The installation MUST be inspected by a qualified auditor, prior to lighting the fireplace. Also, the appropriate local
authorities must be informed.
5.1. Height adjustment, leveling of the fireplace & door’s counterweights adjustment
Adjust the legs of the fireplace at the desired height, taking into account that the device must be leveled. Leveling is
important for the right function of the sliding door.
For the height adjustment, loosen the nuts which are located at the device’s legs, and rotate the adjustment screws
(Pic. 5.1.1). When you reach the desired height, tighten again the nuts. The distances that are shown in (Fig 5.1.2) must
be kept.
For the adjustment of the door’s counterweights, remove the right and left galvanized side covers. To remove them,
unscrew the down screws and pull the cover upwards (Pic. 5.1.3). By adding or removing plates evenly at the both
counterweights (right and left), you can affect the function of the door (Pic. 5.1.4). For safety reasons and well function
of the fireplace, the door (during its assembly at the factory) is set to close at low speed.
Pic. 5.1.1
Pic. 5.1.2
Pic. 5.1.3
Pic. 5.1.4
5.2. Safety distances
The combustion chamber opening must be AT LEAST 80cm away from any flammable
materials that are inside the heat radiation zone (Pic. 5.2.1).
5.3. Wooden beams protection
Given its properties, heat is also transmitted through radiation. In case there are any
wooden beams inside the radiation zone or in the way of the hot air, they MUST be
properly insulated because the continuous exposure in high temperatures can make
them deteriorate faster or even cause self ignition. Use proper insulation materials that
are in accordance with European rules or, in case of high thermal stress you can also
use metal linings.
5.4. General safety instructions
Never leave children alone or without supervision near the fireplace when it is lit.
Teach children how to operate the fireplace correctly and safely.
Never touch the external surfaces of the fireplace or the glass when it is lit. There is a high risk of burns!
Pic. 5.2.1
In general, due to the expansion of the fireplace, the whole casing must have a gap, at
least 0,5 cm, around the fireplace.

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Due to the self closing door, you have to be extra careful when you are filling the fireplace.
It is forbidden to use the fireplace as a waste incinerator.
Don’t use burned or used wood as fuel.
Remove the ash only after it has completely cooled off.
Ash should be placed outdoors or be disposed in a place where there is no risk of ignition.
Immediately inform your specialized local supplier if you find any malfunction.
Don’t use chemicals or liquids as fire starters.
Do not use ANY fuel other than the recommended.
5.5. Flue safety instructions
Prior to installing the fireplace ARTE® the chimney sweep or a
qualified technician should check the condition and operation of
your chimney in accordance with the standards EN13384-1 &
EN13384-2.
By this way, you ensure the best conditions for heating without issues.
-Basic requirements for proper flue operation
The internal section of the flue must preferably be circular. In a case
of square or rectangular flue, the internal corners should have a
radius of at least 20mm. In case of rectangular flue, the ratio of the
sides should be at maximum 1: 1.5.
The flue must be properly insulated and waterproof and constructed
of materials with thermal resistance and resistance to combustion
products and any deposits.
The flue must have no constrictions, it must have a vertical path and
it should not change in direction that exceeds 45oC (Pic. 5.5.1).
In case of an existing flue the construction material should be checked. Materials such as cement with lime,
galvanized steel and rough or porous materials are contraindicated as they create issues in the correct operation of
the fireplace. Also, a proper study for the flue size must be conducted because often old flues have quite large
diameters. This means that the amount of air draft is not proportional to the heat generated by the fireplace and by
extension means that you consume more wood than necessary and will spend more time on maintenance. The
solution proposed in these cases is the connection of an inner tube inside the flue. This tube should extend over the
whole length of the flue and at no point should exceed in diameter the outlet flue of the fireplace. If the existing flue
has the desired diameter a proper cleaning by qualified personnel should be done.
In case of placement of the flue, along outer wall, a careful research must be done in order the thermal loses to be
prevented. However, this solution is not appropriate as the placement of the flue inside the house, heats up more
spaces, as the whole heat of the flue.
The usage of gravitational damper is recommended, for flue ≥6m, in order steady and efficient burning to be insured.
-Chimney placement
The placement of the chimney on the roof is a particularly decisive factor in the convection of the fireplace.
An incorrectly fitted chimney may generate reimbursement of exhaust into the heating space due to down flow of the
air.
Follow the instructions below to ensure proper dissipation of smoke (Pic. 5.5.2).
Pic. 5.5.1
Follow the operating instructions supplied with the product to help prevent fire and
protect the environment.

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The ending of the chimney must be at least 50cm above the top of the roof.
If there is more than one chimney on the roof, they must be positioned at least 2m apart.
If there are two adjacent chimneys, their ends must be at least 50cm apart.
If there is a tall building or tree next to the house, then you should place the chimney at a distance greater than 5m
from the obstacle.
It is prohibited to connect several devices to the same chimney. Each chimney should be autonomous (Pic. 5.5.3).
In case of an inclined roof, the height of the chimney is defined depending on the inclination and the distance of the
chimney from the ridge according to the following table and figure (Table 5.5.1 & Pic. 5.5.4).
INCLINATION
αο
RIDGE –CHIMNEY
DISTANCE
MIN HEIGHT
ABOVE THE RIDGE
Α (m)
H (m)
15ο
< 1,85 m
0,50 m OVER THE RIDGE
> 1,85 m
1,00 m OVER THE ROOF
30ο
< 1,50 m
0,50 m OVER THE RIDGE
> 1,50 m
1,30 m OVER THE ROOF
45ο
< 1,30 m
0,50 m OVER THE RIDGE
> 1,30 m
2,00 m OVER THE ROOF
60ο
< 1,20 m
0,50 m OVER THE RIDGE
> 1,20 m
2,60 m OVER THE ROOF
Pic. 5.5.4
Table 5.5.1
-Chimney cap
The chimney draft depends broadly on the adequacy of the cap.
So, in case the chimney is built, its exhaust diameter should be at least twice the inside diameter of the chimney.
Knowing that it is necessary to protrude from the ridge of the roof, the cap must ensure the proper smoke dissipation in
case of strong wind.
A chimney cap must meet the following requirements:
Internal diameter must be equal to the diameter of the chimney.
Exhaust diameter be at least twice the inside diameter of the chimney.
It should be constructed in such a way as to avoid the entrance of rain, snow and any foreign body in the chimney.
It can be checked, maintained and cleaned easily.
Pic. 5.5.2
Pic. 5.5.3
Industrial style cap with
protective net
Cap with deflector. It leans
according to the wind and it
provides very good smoke
dissipation
Cap with fan. It provides
very good smoke
dissipation even in case
of weak winds

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5.6. Connecting the fireplace with the flue
It is necessary that the flue gas tube is connected to a certified conduit with the same
diameter as the fireplace, by following the dimensions of the adjacent image (Pic. 5.6.1). For
the fireplace MENTOR the diameter of the flue is 200mm for fireplaces with width 80cm and
90cm, and 250mm for fireplaces with width 100cm and 120cm. The flue must be properly
insulated with stone wool with thickness of 4cm with external aluminum foil. Do not use
fiberglass or paper based insulation. Also, do not use flexible thin walled metallic tubes or
asbestos tubes. This tube should be perfectly sealed and well insulated throughout its length.
To install the flue, you must place it on the fireplace outlet and then seal it using the
appropriate sealant.
5.7. Air intake connection
MENTOR fireplaces, gives you the ability to intake air for the burning from different sources:
Α) The best solution is the air to be intake from the outer environment, opening a wicket
directly on the wall, at the back side of the fireplace, adjusting a flexible aluminum tube on
the Φ100mm collar, which is located at the right edge of the fireplace and close to the
bottom (Pic. 5.7.1). For the wicket, use a nozzle, protected by a grille and a wire net. The
nozzle must intersect with the combustion chamber through the flexible tub, which must be
properly placed in order not to be covered. Its minimum surface cannot be less than 110 cm2
(Α).
Β) When the direct import of external air is impossible, you can input internal air from your house, by opening a wicket
either at the area where the fireplace is located (Pic. 5.7.2) or from another adjacent room, by installing wickets at the
intermediate walls (Pic. 5.7.3).
These wickets must be free and not able to be covered. Also, their minimum surface must be 300cm2 (Β), for example,
a grille which size is 30x10cm.
In each case, you can select from which side of the fireplace you will import air, by changing the collar’s position with
the galvanized end cap that is located at the left side.
Pic. 5.6.1
Pic. 5.7.1
Pic. 5.7.2
Pic. 5.7.3
The import of the air which comes from garages, kitchen, bathroom or boiler room,
must be avoided.
When the air comes from an external source, there must be always used the
appropriate clamps and collar Φ100mm.

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5.8. Hot air abduction
The space extending around and over the device up to the deflector must be
ventilated continuously. For this reason you must allow cool air from a lower
spot, for example, the bottom and the outlet of the hot air from above (Pic.
5.8.1).
With that way, it can be achieved:
Higher safety
Increase of the temperature inside the heating room, because of the air flow
around the device (heat conduction).
The hot air extract grille must be placed on top of the trunk approximately
20cm from the ceiling. The grille must always be installed, as its purpose is to
allow, the heat that builds up inside the trunk to be released in the room and
also to relieve the pressure created.
Finally, at the paneling of the fireplace, a visiting slot should be constructed in
order for the installer or the user to have access to the internal parts of the
door and be able to perform maintenance. For the determination of the L
and H dimensions, you should consult the drawing at Chapter 11. Dimensions
& technical specifications.
5.9. Fireplace with galvanized covers and hot air system ( Optional )
-Hot air outlet
At the top of the device, there are four closed and pre- shaped openings as exits of the hot air to the Φ150mm tubes
(Pic. 5.9.1). At least two of them must open. The outlets (1 & 2) are the most efficient for heating.
For the outlets (1 to 4): Open the pre-shaped openings with a hummer and connect the exit nozzles (like Pic. 5.9.2),
connect the hot air tubes and tighten them with clamps. Also, they must be insulated with stone wool. Finally, cover all
the exits at the paneling with adjustable grilles.
Pic. 5.9.1
Pic. 5.9.2
Pic. 5.8.1

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-Connection of motor and thermostat
There are 2 pre-shaped air intakes for the motor, at
the bottom left and right of the fireplace.
Open the pre-shaped openings with a hummer,
place the Ø150mm tubes at the edges of the motor
(right, left) and tighten them with clamps (Pic. 5.9.3).
Connect the other edge of each tube with openings
at the areas from which you want to pump air for the
motor (Pic. 5.9.4). If the intake for the combustion air
is close to the air inlet of the motor, then there must
be a minimum distance of 50cm between them.
Use adjustable grilles in order to close the tubes’
openings and be sure that they must be installed at
places where they will not be covered. Additionally,
if they are located at an outer area, wire net must
be used, in order insects not to enter.
For the placement of the sensor and the control panel, follow the following instructions:
Pic. 5.9.3
Pic. 5.9.4
Pic. 5.9.5: The sensor of the thermostat must be
placed at the air duct, approximately 15cm above
of the cover of the fireplace.
Pic. 5.9.6: Depending on the side from which the motor is
supplied with external air, the thermostat must be installed at
the antidiametric air duct.
For the motors’ intake, you can use either external or internal air.
For installations at places smaller than 70m2, it is recommended one tube to pump
external and one internal air.
For installations at places bigger than 70m2, it is recommended both tubes to pump
internal air.
Do not let the motor without the
tubes, because there is danger that
the smoke from the combustion
chamber will enter into the heating
air.

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Pic. 5.9.7: Connect and install the electronic control panel with the motor, according to the graph.
The electric installation must be done EXCLUSIVELY only by
specialized staff.
Place the panel of the thermostat at a cold place in order overheating of electric parts
to be avoided.

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5.10. Installation examples with hot air supply to more than one room
Α) The following graph (Pic. 5.10.1)
describes the main tube (distributor) of
hot air which heats up more than one
room. The max length of the distributor is
12m when the two front tubes of the
fireplace are connected with a
mixer/junction (made of galvanized and
smooth sheet). Also, use smooth metallic
tube for the 12m of the main tube (Pic.
5.10.1). The tube from the fireplace to
the mixer/junction can be made by
flexible aluminum tube (max 3m per
tube).
Β) Otherwise, 6+6m in a configuration of 2 tubes (Pic. 5.10.2) for
different paths.
C) When the galvanized cover and the hot air system
(motor) do not exist, then another way to distribute air in
more rooms, can be seen in (Pic. 5.10.3). From the point
1, the hot air is sucked by the linear ventilator (point 2).
Through an air vent system, the hot air finally ends up at
the rooms that we want to heat up (points 3).
In that case, it is necessary to open holes (at least one)
(point 4) at the gladding of the fireplace that you will
construct, in order decompression to be avoided. These
openings must be free and not able to be covered. Also
their minimum surface must be 300cm2, for example a
grille which size is 30x10cm.
In general, all the tubes and the mixers/junctions must be covered with glass wool (at least 3cm). Also, for the proper
circulation of the air, there must be free flow of the air through these rooms, in order all the rooms to have the same
temperature.
Pic. 5.10.1
Pic. 5.10.2
Pic. 5.10.3

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6. USAGE INSTRUCTIONS
6.1. Before the first use of the ARTE® MENTOR fireplace
One of our specialized representatives has already given you instructions about how to start the ARTE® MENTOR
fireplace that you just bought.
At the following usage instructions, all the necessary steps that you must follow are analyzed in detail, in order not to
face any problem during the function of your fireplace.
The specialized representative of your area is always available to answer any of your questions. The MENTOR fireplace
is equipped with the following control systems:
6.2. About the ARTE® MENTOR fireplace
1
Check-maintenance port
13
Intake of combustion air
2
Main door with ceramic crystal
14
Intake for hot air ventilator (optional)
3
Attach point for cold handle (left & right)
15
Ventilator box for hot air (optional)
4
Log rolling guard
15
Bottom vermiculite, 1200kg/m3(or cast iron)
5
Combustion air adjustment regulator
17
Vermiculite panels, 750kg/m3(or cast iron)
6
Positioning wheels (during installation)
18
Secondary combustion air holes
7
Leveling and height adjustment feet
19
1st baffle (vermiculite 750kg/m3)
8
Galvanized cover (optional)
20
2nd baffle (vermiculite 750kg/m3)
9
4 air outtakes for adjacent rooms (optional)
21
3rd baffle (metallic)
10
Adjustment regulator of automatic fume damper
(ADF)
22
Flue
11
Upper air curtain
23
Automatic fume damper (ADF)
12
Primary air outlet
Table 6.2.1

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6.3. General information
-When the fireplace paint dries
ARTE ® products are painted in spray booth with as more environmentally friendly and ecological colors as possible.
There is although a possibility that the first few times the fireplace is lighted, the paint emits an odor. Let the fire burn
with intense convection until all traces of gas disappear and there is no longer a smell. The gas is not toxic, but the
room should be well ventilated.
-Incineration preparation
Prepare sufficient amount of chopped firewood, kindling and torches or branches. Before using the wood, it is
recommended to store them in a warm place for a few days.
-Combustion air intake
Although the fireplace uses external air for combustion, make sure that the room is ventilated adequately when the
fireplace operates with fresh air. When you open the door of the combustion chamber for adding firewood there
should be no pressure difference between outdoor and indoor air in the room, so it is good to keep the door open for
about 1.5cm for 5-6 seconds and then fully open it.
-Power failure (when there is a motor)
In case of power failure, you can still start or operate you ARTE® MENTOR fireplace normally. The only difference is
that because the motor will not function, it will not give directly the heat inside the room but with heat convention.
That is why we suggest you to use an UPS device with minimum power 1000VA (pure sine wave UPS), which will
ensure you, nonstop function of your fireplace for approximately an hour.
-Heating during seasonal change or in adverse weather conditions
When there is high humidity or fog, with temperatures ≥15 °C, but also during the transitional period between
seasons, it is recommended to light a test fire before normally lighting the fireplace. This will displace the cold, heavy
air that is inside the flue and create the right conditions for optimum smoke dissipation.
-ADF function
The automatic (and adjustable) fume damper [ADF] (Table 6.2.1, Line 10) enables you to adjust the damper to
remain open in any position desired, even with the main door closed, in order to ensure adequate convection,
depending on the height of the flue and the season.
e.g. Winter → Towards closed
Spring –Autumn → Towards open
To adjust the damper, turn the regulator right to close the damper and left to open it, checking the indicator in order to
calculate its inclination (Pic. 6.3.1).
Position 1
Position 2-3
Position 4-6
CLOSED DAMPER
INTERMEDIATE
POSITION
OPEN DAMPER
Pic. 6.3.1
The air intake must be positioned so as not to allow being covered.
During a power failure, the hot air distribution motor stops .
But the ARTE ® MENTOR fireplace is safe.

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6.4. Usage of the detachable handle (“Cold handle”)
The cold handle is a tool that you can use in order to open the door, even if the surfaces of the fireplace are extremely
hot (Pic. 6.4.1).
The cold handle is provided in the standard edition combined with a magnetic base in order to place it on the wall
(Pic. 6.4.2).
Pic. 6.4.1
Pic. 6.4.2
If you prefer the usage of a handle of your own
choice or the ARTE’s one, you can order special tools
from ARTE in order to adjust them. The handle that
you will choose from the market must be able to
withstand high temperatures and agrees with the
dimensions of Pic. 6.4.3.
Pic. 6.4.3
Pic. 6.4.4: In order to install the handle of your own
choice, unscrew the 4 screws at the bottom and
remove the A & B parts.
Pic. 6.4.5: Screw the handle with the C brackets with 2 flat
head screws and screw everything at the bottom of the
door, by screwing the screws that were removed before.
Additionally place the parts A and B at the collateral
positions (for the usage of the cold handle).

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6.5. Adjustment of combustion air
Pic. 6.5.1
The regulator adjusts the outer air that comes into the combustion chamber as follows: (Pic. 6.5.1).
At the position 0, the primary and the secondary air are closed.
At the position 1, the primary air is closed and the secondary is at 50%.
At the position 2, the primary and the secondary air are 100% open.
Move the regulator in any intermediate position, between closed and open. In that way, you can control the
combustion rate, either like you want or in relation to the wood quantity or the atmospheric conditions.
6.6. Setting and function of the thermostat (Optional)
Turn on the function ON/OFF of the control device by
pressing the button A. The state ON/OFF is indicated
by the L1 lightbubl.
How to OPERATE the control device
1. MANUAL (indication MAN –lightbulb L2)
The fan operates in the selected speed,
independently of the temperature of the sensor.
2. AUTOMATIC (indication AUTO –lightbulb L3)
The fan operates In the selected speed when the
temperature of the sensor is higher than the one
that is setted on the thermostat (45oC).
3. PROPORTIONAL (indication PROP –lightbulb L4)
The fan increases its speed automatically, depending on the temperature of the sensor (from 45oC and above). If
you forget to turn on the thermostat (it remains at the OFF position) before you light the fireplace and the
temperature of the sensor reaches 100oC, then the device turns on (ON) automatically and starts to operate in
MANUAL function, but after 10 seconds it passes to the PROPORTIONAL function, till the temperature drops to 90oC,
so it goes back to the MANUAL function. This procedure will keep going till you select another function.
4. ALARM function
If the temperature of the sensor rises above 130oC, an alarm is activated. By pushing any button, you can
deactivate this alarm for 5 minutes. If after 5 minutes, and if the problem is not solved, the alarm is activated again.
Pic. 6.6.1

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Main MENU
1. Selection of the function
Push the D button in order to see the selected function, which is written on the screen and the corresponding
lightbulb lights up. By pressing again the D button, you can select one of the three function that are shown on the
screen and mentioned by the corresponding lightbulb. The setting is saved automatically after 4 seconds. The
lightbulb L5 shows the state of the fan.
2. Selection of the function’s speed
By pushing the B and c buttons, you can see or change the current speed of the fan.
P0 = OFF (only for MANUAL function)
P1 = Minimum speed
P10 = Maximum speed
This function is not available when the PROPORTIONAL function is selected.
For the AUTOMATIC function, you can select the speeds P1 ~ P10.
ALARM OR MALFUNCTION SIGNALS
The control panel can indivate any malfunction of the sensor. Under these circumstances, the following lightsource
indications may appear:
LO: indicates low temperature (temperature lower than 0°C) |Open or not connected sensor
HI: indicates high temperature (temperature above 180°C) | Shortcircuit of the sensor
7. LIGHTING THE FIREPLACE
Every time you light the fireplace, it initially requires large volumes of air. When the fireplace is cold, turn the regulator
(Fig 6.5.1) at the maximum open setting (position 2).
To form an adequate layer of ash at the base of the fireplace, use 1-2 kg of dry kindling the first time you light it. If it is
possible, constantly maintain a layer of ash with thickness of 2-3 cm at the base of the combustion chamber for added
insulation.
7.1. Traditional method of lighting
1. Place 2-4 kindling tablets or 7-10 wrapped newspaper sheets beneath
1-2 kg dry kindling.
2. Turn the regulator (Pic. 6.5.1) at the maximum open setting (position 2).
3. After 15-20 minutes a thick layer of cinder will be formed in the
combustion chamber and the temperature will rise, which is essential
for the continuation of combustion.
4. Once the requirement described in point 3is met, place more logs on
the cinder, with a distance of about 1cm from one another.
5. Turn the regulator (Fig 6.5.1) at the desired setting and close the door.
The wood will begin to burn within 2-3 minutes. If not, turn the regulator
at the previous maximum open setting.
6. Ensure there is adequate air supply (oxygen) to maintain the flame clear and powerful when you adjust the
regulator.
7. As soon as the fire leaves a thick layer of cinder, you can add more firewood by repeating steps 4-6.
Pic.7.1.1: Traditional method of lighting
To avoid covering the glass with soot, it is important not to let logs lean against it.

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7.2. Lighting without CO emissions (FROM TOP TO BOTTOM)
1. Turn the regulator (Fig 6.5.1) at the maximum open setting (position 2).
2. Place logs, whose weight depends on the size of the fireplace, alternately
(once lengthwise –once widthwise).
3. Add some torch (1-2 kg) in a length/widthwixe together with 2-3 kindling
tablets or 3-4 wrapped newspaper sheets and light them.
4. Once you ensure that the flue is warm enough (after 5-10 minutes) turn the
regulator (Fig 6.5.1) at the desired setting, so that the combustion keeps going
seamlessly and ensure there is adequate air supply (oxygen) to maintain the
flame clear and powerful.
5. As soon as the fire leaves a thick layer of cinder, you can add more firewood.
Feed the fireplace often but with small amounts of firewood, always depending
on the size of the fireplace. If the fireplace is overly full, the generated heat may
cause excessive strain on the flue. The supply of firewood should be done in
moderation.
Wood combustion rules
If you want less heat, put a smaller quantity of wood in the fireplace and reduce the amount of air. It is however
important to maintain an adequate layer of cinder.
Less heat = Less wood = Less air.
More heat = More wood = More air.
When the fireplace operates at excessively low power or if the wood is not sufficiently dry, soot might deposit on
the glass.
7.3. Safe handlings in case of wrong functioning
In rare cases, even a test fire can cause not effective draft in the flue. In this case, call your chimney sweep.
In no case, you must not try to light a bigger fire. If smoke escapes from the fireplace, ventilate the room immediately
and call your chimney sweep. DON’T LIGHT THE FIREPLACE!
7.4. Smoke escape in the room
Check the following:
If for any reason you have left the door open during operation.
If the flue is absolutely airtight.
If the internal of the chimney is absolutely airtight from the top to the bottom –(Even a small crack or gap can
spoil the insulation)
If the throttle of the A.D.F. system is blocked or if cinders have stuck inside the pipe on the throttle.
If the chimney is suitable and clean –(In each case, they must be fixed or cleaned by a chimney sweep)
That there is nothing flammable that is in touch with or close to the flue or the device.
Pic. 7.2.1: Lighting without CO
emissions
Smoke contains CO (carbon monoxide), so any smoke escape must not be tolerated.
The openings of the air supply should not be covered by firewood.
The fire should be vigorous and the smoke exiting from the flue must be almost
unnoticeable. The fire should not be smoldering because it is causing more pollution.
It is recommended installing a smoke detector in the room where the fireplace is
located.
DO NOT OVERHEAT THE FIREPLACE AND DO NOT LEAVE THE DOOR OPEN! There is risk of
fire or permanent damage. If any part of the fireplace starts glowing, then the device is
overheating.