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USER MANUAL ASTRO 3MFWB DOVRE

Installiecondities 4

Algemeen 4

Schoorsteen 4

Bruinkool as 13
stoken 13

Bruinkoolbriketten 11

Declaration of conformity 3

Safety 4

Installation requirements 4

General 4
Chimney (flue). 4
Ventilation of the area 5
Floors and walls. 6
Product description .6

Installation 6.

General preparation 6
Preparing the connection to the flue 8
Preparing the outside air connection 9
Installing and connecting 11

Use 11

First use 11
Fuel 11
Lighting 12
Burning wood 12
Burning brown coal briquettes 13
Burning anthracite coal 13
Controlling combustion air 14
Extinguishing the fire 15
Removing ashes 15
Fog and mist 15
problems 16

Maintenance 16

Chimney 16
Cleaning and other regular maintenance activities 16

Appendix 1: Technical Data 18
Appendix 2:Measurements. 20
Appendix 3: Distance from combustible
material 24
Appendix 4: Diagnostic diagram 28
Index 29

Introduction

Dear user,

In buying this DOVRE heating appliance, you have chosen a high quality product. This product is part of a new generation of energy-efficient and environmentally-friendly heating appliances. These appliances make optimum use of convection heat as well as thermal radiation (radiant heat).

  • Your DOVRE appliance has been manufactured with state-of-the-art production equipment. In the unlikely event of a malfunction, you can always rely on DOVRE for support and service.
    The appliance should not be modified; please always use original parts.
    The appliance is intended for use in a living room should be connected hermetically to a well-functioning chimney. Dovre nv, Nijverheidsstraat 18 B-2381 Weelde hereby declares
    We advise you have the appliance installed by athat houtkachel Astro 3MFP, Astro 3MFWB, Astro authorized and competent installer. 4MFP en Astro 4MFWB have been produced in
    DOVRE cannot be held liable for any problems damage resulting from incorrect installation.
    Observe the following safety regulations when Weelde 01-03-2013 installing and using the appliance.

In this manual, you can read how the DOVRE heating appliance can be installed, used and maintained safely. Should you require additional information or technical data, or should you experience an installation problem, please first contact your supplier.

DOVRE ASTRO 3MFWB - Introduction - 1

© 2013 DOVRE NV

Due to continuous product improvement, the supplied appliance specifications may vary from the description in this brochure without prior notice.

Please note: All safety regulations must be complied with strictly.
Please read carefully the instructions supplied with the appliance for installation, use and maintenance, before using the appliance.
The appliance must be installed in accordance with the laws and requirements of your country. Installation requirements
All local regulations and the regulations relating to national and European standards must be General observed when installing the appliance. The applic
The appliance should preferably be installed by functioning chimney. an authorized installer. Installers will be aware of the applicable regulations and requirements. For the connection measurements: see the appendix "Technical data".
The appliance is designed for heating purposes. All surfaces, including the glass and connecting tube, can get very hot (over 100^ ! For operation, use a so-called "cold hand" or an oven glove. Make sure there is sufficient protection if young children, disabled persons Chimney (flue) or old people are in the vicinity of the appliance. The flue or chimney is needed for:
Safety distances from flammable materials must be adhered to strictly.
Don't place any curtains, clothes, laundry or other combustible materials on or near the appliance. As the warm air in the flue or chimney is lighter than the outside air, it rises. Air intake, needed for the combustion of fuel in the
Don't use flammable or explosive substances near the appliance when it is in use. A poorly-functioning flue or chimney can cause smoke to escape into the room when the door is opened. Avoid a chimney fire by having the chimney swept regularly. Never burn wood with the door open. Damage caused by smoke emissions into the room is not covered by the warranty.
In the case of a chimney fire: close all air inlets Do not connect multiple appliances (such as a boiler for central heating) to the same flue, of the appliance and alert the fire brigade. 1 If the glass in the appliance is broken or cracked, it must be replaced before you can use the appliance again. In the event of two connections ensure that the difference in height between the connections is no less than 200~mm

Ask your installer for advice regarding the flue. Refer to the European norm EN13384 for a correct calculations for the flue.

The flue must satisfy the following requirements:

The flue or chimney must be made of fire-resistant material, preferably ceramics or stainless steel.
The flue or chimney must be airtight and well-cleaned and guarantee sufficient draught.

A draught/vacuum of 15 - 20 Pa during normal operation is ideal.

Starting from the flue spigot, the flue must run a vertically as possible. Changes in direction and horizontal pieces disrupt the outward flow of combustion gases and may cause soot deposits.
To prevent combustion gases from cooling down For good combustion, the stove needs air (oxygen). too much, which reduces the draught, ensure thatThis air is supplied via adjustable air inlets from the the interior diameter is not too big. area in which the stove is installed.
The flue or chimney should ideally have the same The combustion will be incomplete in case of diameter as the connection collar. insufficient ventilation, which results in toxic
For good combustion, the stove needs air (oxygen). This air is supplied via adjustable air inlets from the area in which the stove is installed.

i For the nominal diameter: see the appendix "Technical data". If the smoke channel is well

insulated, the diameter may be slightly bigger As a rule of thumb, the air supply should be 5, (up to 2x the section of the connection collar p^cm^2 / kW Extra ventilation is needed when:

When using a cover plate or exhaust hood : make sure that the cover does not restrict the flue out ofpu can provide extra ventilation by having a and that the cap does not impede the outward ventilation louvre fitted on the outside wall. of combustion gases.

The section (area) of the smoke channel must constant. Wider segments and (in particular) narrower segments disrupt the outward flow of combustion gases.
The flue must end in a zone that is not affected surrounding buildings, trees or other obstacles.
The flue outside the house must be insulated.
The chimney must be at least 4 metres high.
As a rule of thumb: 60cm above the ridge of the roof.
If the ridge of the roof is more than 3 metres away from the flue: stick to the measurements in the following figure. A = the highest point of the roof within a distance of 3 metres.

DOVRE ASTRO 3MFWB - Introduction - 2

Ventilation of the area

The combustion will be incomplete in case of insufficient ventilation, which results in toxic gases being produced and spread through the area.

The stove is in an area that is well-insulated.
There is mechanical ventilation, for example a central extraction system or an extraction hood in an open kitchen.

Make sure that other air consuming appliances (such as tumble-driers, other heating appliances or a bathroom fan) have their own supply of outside air, or are switched off when you use the appliance.

i You can also connect the appliance to an outside air supply. This makes additional ventilation unnecessary.

DOVRE ASTRO 3MFWB - Ventilation of the area - 1

Floors and walls

The floor on which the appliance is placed must have sufficient bearing capacity. For the weight of the appliance, see the appendix "Technical data".

DOVRE ASTRO 3MFWB - Floors and walls - 1

Protect flammable flooring from heat radiation by means of a fireproof protective plate. See the appendix "Distance from combustible material".

DOVRE ASTRO 3MFWB - Floors and walls - 2

Remove combustible material such as linoleum, carpets/rugs and similar materials below the fireproof protective plate.

DOVRE ASTRO 3MFWB - Floors and walls - 3

Keep sufficient distance between the appliance and combustible materials such as wooden walls and furniture.

DOVRE ASTRO 3MFWB - Floors and walls - 4

The connecting tube also radiates heat. Ensure that there is sufficient distance or a shield between the connecting tube and combustible material. 1

The rule of thumb for a single-walled tube is a distance of 3x the diameter. If a lining shell is fitted around the tube, a distance of 1x the diameter is permissible.

DOVRE ASTRO 3MFWB - Floors and walls - 5

Carpets and rugs must be at least 80~cm away from the fire.

DOVRE ASTRO 3MFWB - Floors and walls - 6

Use a fireproof floor plate to protect a flammable floor from any ash which may fall front of the stove. The protective plate must comply with national standards.

DOVRE ASTRO 3MFWB - Floors and walls - 7

For the dimensions of the fireproof protective plate: see the appendix "Distance from combustible material".

DOVRE ASTRO 3MFWB - Floors and walls - 8

For further requirements in connection with fire safety: see the appendix "Distance from combustible material".

Product description

DOVRE ASTRO 3MFWB - Product description - 1
09.20019.030

  1. Fire grate
    Door
  2. Primary air slide
  3. Door latch
  4. Secondary air slide
  5. Riddling rod

Installation

General preparation

  • Please check the appliance immediately after delivery for damage caused during transport or any other damage or defects. The appliance is attached to the pallet with screws at the bottom.

DOVRE ASTRO 3MFWB - General preparation - 1

DOVRE ASTRO 3MFWB - General preparation - 2

If you detect damage caused during transport or any other damage or defects, do not use appliance and notify the supplier.

  • Remove the removable parts (fire-resistant inner plates, fire grate, top plate, ash pan) from the appliance before you start installing the appliance.

DOVRE ASTRO 3MFWB - General preparation - 3

It is easier to move the appliance and to avoid damage if the removable parts have been removed.

DOVRE ASTRO 3MFWB - General preparation - 4

Note the location of the removable parts, so that you can re-position the parts in the correct place later on.

DOVRE ASTRO 3MFWB - General preparation - 5

  1. Open the door; see the following figure.

DOVRE ASTRO 3MFWB - General preparation - 6

  1. Remove the fire-resistant inner plates; see the following figure.

DOVRE ASTRO 3MFWB - General preparation - 7

Vermiculite inner plates are light and tend to be

ochrous in colour on delivery. They insulate to combustion chamber to boost combustion. Cast iron inner plates protect the combustion chamber and dissipate heat to the surroundings.

Removable internal sections

astro3 series

1 03.77099.002 Fire basket front
2 03.77400.002 Fire basket left
3 03.77401.002 Fire basket right
4 03.08365.002 Inner plate
5 03.61115.100 Grade
6 03.66532.100 Fire grate

astro4 series

1 03.77099.002 Fire basket front
2 03.77402.002 Fire basket left
3 03.77403.002 Fire basket right
4 03.08365.002 Inner plate
5 03.61115.100 Grade
6 03.66532.100 Fire grate
7 03.35210.000 Corner piece

  1. Remove the ash pan; see the following figure.

DOVRE ASTRO 3MFWB - astro4 series - 1

DOVRE ASTRO 3MFWB - astro4 series - 2

Preparing the connection to Connect to top the flue

When connecting the stove to the flue, you can choose to connect to the top or rear of the stove.

DOVRE ASTRO 3MFWB - Preparing the connection to Connect to top the flue - 1

When the appliance is delivered, the connection on the rear is left open.

Plug the outlet you don't wish to use with the corresponding supplied cover.
Install the supplied corresponding connection collar to the outlet you wish to use.
Sealant and materials are supplied.

DOVRE ASTRO 3MFWB - Preparing the connection to Connect to top the flue - 2

1 Connection - top
2 Connection - rear

DOVRE ASTRO 3MFWB - Preparing the connection to Connect to top the flue - 3

  1. Remove the top plate.

The top plate can be taken off the appliance just like that.

  1. At the outlet at the top, apply sealant to the contact surface where the connection collar will be positioned.
  2. Install the connection collar with the materials.
  3. At the outlet at the rear, apply sealant to the contact surface where the cover will be positioned.
  4. Install the cover using the materials.

Connecting to the rear

DOVRE ASTRO 3MFWB - Connecting to the rear - 1

  1. Remove the top plate.
    The top plate can be taken off the appliance just like that.
  2. At the outlet at the top, apply sealant to the contact surface where the cover will be positioned.
  3. Install the cover using the materials.
  4. At the rear, apply sealant to the contact surface where the connection collar will be positioned.
  5. Install the connection collar with the materials.

Preparing the outside air connection

If the appliance is installed in a room without sufficient ventilation, you can install a connecting kit on the appliance for the outside air supply. Some of the air inlets on the appliance must then be plugged with the blanking material provided. We recommend applying a connection set that has a valve you can close when the stove is not in use.

The air supply tube is 100mm in diameter. If the tube is smooth, it may be no longer than 12 metres. If accessories such as bends are used, the maximum

length (12 m) must be reduced by 1 m for each accessory used.

  1. Close the air inlet in the bottom plate with the small cast-iron cover plates (1) and screws (2); see following figure.

i By closing the air inlet in the bottom plate you prevent air being used for combustion from an insufficiently ventilated space.

DOVRE ASTRO 3MFWB - Preparing the outside air connection - 1

  1. For connection to outside air via the floor:

a. Make an opening in the floor; see 'Appendix 2, Measurements' for the correct position of the opening.
b. Slide a straight air supply tube onto the connection collar of the stove, so that it cannot move; see following figure.

DOVRE ASTRO 3MFWB - Preparing the outside air connection - 2

DOVRE ASTRO 3MFWB - Preparing the outside air connection - 3

  1. For connection to outside air via the rear of the appliance:

a. Create an opening in the base or the log compartment by removing the panel at the back of the base or the log compartment; see following figures.

DOVRE ASTRO 3MFWB - Preparing the outside air connection - 4

Depending on the version of the stove the cover plate is affixed either with springy clips or with a washer plate. In case of a spring fixing use a screwdriver to lift the cover plate out of its groove.

DOVRE ASTRO 3MFWB - Preparing the outside air connection - 5

DOVRE ASTRO 3MFWB - Preparing the outside air connection - 6

DOVRE ASTRO 3MFWB - Preparing the outside air connection - 7

DOVRE ASTRO 3MFWB - Preparing the outside air connection - 8

b. Connect a so-called 'elbow' hermetically to the opening in the base or the log compartment so that it cannot move; see following figure.

DOVRE ASTRO 3MFWB - Preparing the outside air connection - 9

The height for the connection through the wall may vary depending on the elbow type.

DOVRE ASTRO 3MFWB - Preparing the outside air connection - 10

Installing and connecting

  1. Position the stove in the correct place, and make sure it is level.
  2. Connect the appliance airtight to the flue (chimney).
  3. In the case of connection to outside air: connect the outside air supply to the connection collar within the base or log compartment of the stove to the fitted elbow.
  4. Re-position all removed parts in the correct places in the stove.

Never light a fire in the appliance without the fireproof inner plates.

The appliance is now ready for use.

Use

First use

When you use the stove for the first time, make an intense fire and keep it going for a good few hours.

This will cure the heat-resistant paint finish. This may result in some smoke and odours. You could open windows and doors for a while in the area in which stove is located.

Fuel

The appliance is suitable for the burning of natural wood; sawn and chopped wood that is sufficiently dry. The appliance is also suitable for the burning of brown coal briquettes and anthracite coal.

Do not use other fuels, as they can cause serious damage to the stove.

You are not allowed to use the following fuels, as they pollute the environment and because they heavily soil the appliance and flue, which may lead to a chimney fire:

Treated wood, such as scrap wood, painted wood, impregnated wood, preserved wood, plywood and chipboard.
Plastics, scrap paper and domestic waste.

Wood

Hardwood, such as oak, beech, birch and fruit trees wood is the ideal fuel for your stove. This type of wood burns slowly with calm flames. Softwood contains more resins, burns faster and sparks more.
Use seasoned wood that contains no more than 20% moisture. The wood should have been seasoned for at least 2 years.

Saw the wood to size and split it while it is still fresh. Fresh wood is easier to split, and split wood dries more easily. Store the wood under a roof where the wind has free access.

Do not use damp wood. Damp logs do not produce heat as all the energy is used in the evaporation of moisture. This will result in a lot of smoke and soot deposits on the stove door and in the chimney. The water vapour will condense in the stove and can leak away through chinks in the stove, causing black stains on the floor. It may also condense in the chimney and form creosote. Creosote is a highly flammable compound and may cause a chimney fire.

Brown coal briquettes

Brown coal briquettes have approximately the same burning characteristics as wood.

  • Ensure there is a good charcoal bed before you start burning brown coal briquettes.
    For lighting the fireplace, follow the instructions in the "Lighting" paragraph.

DOVRE ASTRO 3MFWB - Brown coal briquettes - 1

Anthracite coal

Anthracite coal is categorised on the basis of properties, sometimes prescribed by law, such as the percentage of volatile substances. The ash content of anthracite coal is between 3% and 13% . The lower the ash content, the higher the net heating value and the less often you have to remove ash.

the appliance; see 'Controlling air combustion'.

  1. Allow the fire develop into a good blaze until there is glowing bed of charcoal. You can then add fuel and adjust the appliance, see the chapter "Stoking with wood".

Burning wood

Preferably use category A anthracite coal with a After you have followed the instructions for lighting : low ash content.

Use the recommended size 12/22 or 20/30.

For lighting the fireplace, follow the instructions in the "Lighting" paragraph.

  1. Slowly open the stove door.

  2. Spread the charcoal evenly across the bottom of the stove base.

  3. Stack a few logs on the charcoal.

Lighting

You can check whether the flue has sufficient draught by lighting a ball of paper above the baffle plate. A flue often has insufficient draught and consequently, some smoke may escape into the room instead of up the chimney. You can avoid this problem by lighting the fire as described below.

  1. Stack two layers of medium sized logs crosswise.
  2. Stack two layers of kindling crosswise on top of the logs.
  3. Place a firelighter cube in the lower layer of kindling and light the cube according to the instructions on the packaging.

DOVRE ASTRO 3MFWB - Lighting - 1
Open stacking

DOVRE ASTRO 3MFWB - Lighting - 2

If the logs are stacked openly, the wood will burn quickly as the oxygen can reach each log easily. If you want to use the stove for a short while, make an open stack.

  1. Close the door of the appliance and open the primary air inlet and open the secondary air inlet of

Compact stacking

DOVRE ASTRO 3MFWB - Compact stacking - 1

  1. Slowly open the stove door.
  2. Spread the charcoal evenly across the bottom of the stove base.
  3. Place the brown coal briquettes on the charcoal bed.
  4. Close the door.
  5. Regularly remove ashes from the stove base riddling the grate. Use the cold handle to operate the riddling rod.

Burning anthracite coal

DOVRE ASTRO 3MFWB - Burning anthracite coal - 1

Always close the secondary air slide when burning anthracite coal.

DOVRE ASTRO 3MFWB - Burning anthracite coal - 2

Set the fuel choice air valve to the closed position.

If the logs are stacked tightly, the wood will burn more quickly. After you have followed the instructions for lighting, slowly as the oxygen can only reach some logs easily. If you want to burn wood for a longer period, Open the primary air slide completely.

make a compact stack.

  1. Close the door of the appliance.
  2. Close the primary air inlet and leave the second air inlet open.

DOVRE ASTRO 3MFWB - Burning anthracite coal - 3

Fill the appliance up to one third capacity.

Burning brown coal briquettes

Brown coal briquettes burn in almost the same way wood. Using the primary air inlet, ensure sufficient supply of air under the fire. For further information the paragraph "Burning wood".

Burning brown coal briquettes creates a lot of ash. Regularly remove excess ash. See the paragraph "Removing ashes" for instructions.

DOVRE ASTRO 3MFWB - Burning brown coal briquettes - 1

For the properties and use of brown coal briquettes: consult your brown coal briquettes supplier or see the brown coal briquettes' packaging.

After you have followed the instructions for lighting:

  1. Slowly open the stove door.
  2. Spread the charcoal evenly across the bottom of the harry the stove base.
  3. Spread a shovelful of coal on the charcoal bed and wait with the next shovelful until the coals start to glow.

  4. Now add more coal.

DOVRE ASTRO 3MFWB - Burning brown coal briquettes - 2

Be careful not to smother the fire by adding too much coal at once.

DOVRE ASTRO 3MFWB - Burning brown coal briquettes - 3

You have added as much as you can once the glow of the previous load is only just visible.

DOVRE ASTRO 3MFWB - Burning brown coal briquettes - 4

  1. Close the door.
  2. Allow the coals to burn well for a few minutes and control the air supply using the primary air slider.
    If the fire basket or the cast-iron plates start to glow red you have overfed the fire.
  3. Regularly remove ashes from the stove base riddling the grate. Use the cold handle to operate the riddling rod.

DOVRE ASTRO 3MFWB - Burning brown coal briquettes - 5

Controlling combustion air

The appliance has various features for air control; see following figure.

DOVRE ASTRO 3MFWB - Controlling combustion air - 1

  1. The primary air slide is open in pulled out position and closed in pushed back position.
  2. The secondary air slide is open in pulled out position and closed in pushed back position.

The primary air slide controls the air flow under the grille (1); see following figure.

The secondary air slide controls the air flow for the glass and the vents in the back wall (2).

DOVRE ASTRO 3MFWB - Controlling combustion air - 2

Advice

Never burn wood with an open door.
Regularly burn wood with intense roaring fires.

If you frequently have low intensity fires, tar and creosote may be deposited in the chimney. Tar and creosote are highly combustible substances. Thicker layers of these

substances may catch fire if the temperature in Use the riddling rod to free the grate of excess the chimney increases suddenly. By allowing ashes.

the fire to burn very intensely regularly, layers of tar and creosote will disappear.

Low intensity fires also cause tar deposits on the stove window and door.

When the outside temperature is not very low, it is better to burn wood intensely for a few hours instead of having a low intensity fire for long period of time.

If the appliance is still warm, use the "cold hand" to operate the riddling rod.

DOVRE ASTRO 3MFWB - Advice - 1

Control the air supply with the secondary air inlet

The secondary air inlet not only supplies air to the fire but to the glass as well, so that it does not quickly become dirty.

  • Open the primary air inlet for the time being if the air supply by the secondary air inlet is inadequate or if you want to fan the fire. 2. Op

  • Open the stove door.

It is better to add a small amount of logs regularly Using the scraper, sweep the remaining ashes than to add many logs at the same time. through the grid.

Extinguishing the fire

  1. Remove the ashtray (see next figure) using the glove provided and empty the ashtray.

Do not add fuel and just let the fire go out. If a fire is damped down by reducing the air supply, harmful substances will be released. For this reason, the fire should be allowed to go out naturally. Keep an eye on the fire until it has gone out. All air inlets can be closed once the fire has died completely.

Removing ashes

After the wood has been burnt, a relatively small amount of ashes is left over. This bed of ashes is a good insulating layer for the stove base plate and improves combustion. It is good to leave a thin layer of ashes on the stove base plate.

The flow of air through the fire plate must not be obstructed, however, and no ash may be allowed to accumulate behind a cast-iron inner plate. Remove the excess ash regularly.

DOVRE ASTRO 3MFWB - Removing ashes - 1

After the brown coal briquettes and anthracite coal has been burnt, a relatively large amount of ash is over. No ash may be allowed to accumulate

underneath the fire grate and the ash should never reach the bottom of the grate. This will cause the to overheat and be damaged.

  1. Replace the ash pan and close the stove door.

Fog and mist

Fog and mist hinder the flow of flue gases through the flue. Smoke can blow back and cause a stench. If it is not strictly necessary, it is better not to use the stove

in foggy and misty weather.

problems

Refer to the appendix "Diagnostic diagram" to resol any problems in using the stove.

DOVRE ASTRO 3MFWB - problems - 1

To reach the nominal output, approximately kg of fuel needs to be burnt every 45 min

Remove and install baffle plate

  • Unscrew the clamping plate on the front of the baffle plate. Lift the baffle plate from the support and tilt the baffle plate out of the appliance. Please ensure that the rear of the baffle plate properly connects to the air funnel at the back of the appliance when reinstalling.

Maintenance

Follow the maintenance instructions in this chapter to keep the stove in good condition.

Chimney

In many countries, you are required by law to have your chimney checked and maintained.

At the beginning of the heating season: have the chimney swept by an expert.
During the heating season and after the chimney has not been used for a long time: have the chimney checked for soot deposits.
After the heating season: seal off the chimney with a ball of paper.

Cleaning and other regular maintenance activities

DOVRE ASTRO 3MFWB - Cleaning and other regular maintenance activities - 1
09.20019.034

Checking fire-resistant inner plates

The fire-resistant inner plates are consumables and subject to wear. Vermiculite inner plates are fragile. Do not knock the inner plates with logs. Check the fire-resistant inner plates frequently and replace them when necessary.

DOVRE ASTRO 3MFWB - Checking fire-resistant inner plates - 1

Do not clean the stove when it is still warm.

See the chapter "Installation" for instructions on removing and installing the inner plates.

Clean the exterior of the stove with a dry lint-free cloth.

DOVRE ASTRO 3MFWB - Checking fire-resistant inner plates - 2

The insulating vermiculite or chamotte inner plates may develop hairline cracks, but this does not affect their performance adversely.

You can clean the stove interior thoroughly at the end of the heating season:

DOVRE ASTRO 3MFWB - Checking fire-resistant inner plates - 3

Cast-iron inner plates last a long time if you remove frequently the ash that can accumulate behind them. If accumulated ash behind the cast-iron plate is not removed, the plate will no longer be able to dissipate the heat to the surroundings and this may cause the plate to warp or crack.

If necessary, first remove the fire-resistant inner plates. See the chapter "Installation" for instructions on removing and installing the inner plates.

DOVRE ASTRO 3MFWB - Checking fire-resistant inner plates - 4

Never use the stove without the fire-resistant inner plates.

If necessary, clean the air supply ducts. Remove the top plate to this end. The top plate lies loose on the appliance.

Cleaning glass

If required, remove the baffle plate at the top of the appliance and clean it.

Dirt clings less easily to well-cleaned glass. Proceed as follows:

  1. Remove dust and loose soot with a dry cloth.

Check the appliance for air leaks. Close any chinks with stove sealant.

  1. Clean the glass with stove glass cleaner:

a. Apply stove glass cleaner to a kitchen sponge. rub down the entire glass surface and give the cleaning agent time to react.
b. Remove the dirt with a moist cloth or kitchen tissue.

Allow the sealant to harden fully before lighting the stove, as any moisture in the sealant will form bubbles, resulting in a new air leak.

  1. Clean the glass again with a normal glass cleaning product.
  2. Rub the glass clean with a dry cloth or kitchen tissue.
    Do not use abrasive or aggressive products to clean the glass.
    Wear household gloves to protect your hands.

If the glass in the appliance is broken or cracked, it must be replaced before you can use the appliance again.

Make sure that no stove window cleaner runs between the glass and the cast-iron door.

Lubrication

Although cast-iron is slightly self-lubricating, you will still need to lubricate moving parts frequently.

Lubricate the moving parts (such as guide systems, hinge pins, latches and air slides) with heat resistant grease that is available in the specialist trade.

Touching-up the paint finish

Small areas of damaged paint finish can be touched-up with a spray can of special heat-resistant paint, available from your supplier.

Areas of damaged enamel can be touched up with a special heat-resistant paint finish that is available from your supplier.

Checking the seal

Check whether the door sealing rope is still in good condition and works well. The sealing rope is subject to wear and will need to be replaced over time.

Appendix 1: Technical Data

ModelAstro 3MF Astro 4MF
Fire regime Non continuous use
Nominal output 8 kW
Chimney connection (diameter) 150 mm
Weight +/- 140 kg
Recommended fuel WoodBrown coal briquettesAnthracite coal
Fuel property max. 33 cm 3" - 6" - 7"12/22 20/30
Mass flow of flue gases 7.4 g/s6.1 g/s7.3 g/s
Flue gas temperature in measurement tionsec- 297 °C252 °C261 °C
Temperature at the appliance outlet351 °C454 °C321 °C
Minimum draught12 Pa12 Pa12 Pa
CO emission (13%Q)0,09 %0,04 %0,10 %
NOx emission (13%Q)123 mg/Nm3151 mg/Nm3123 mg/Nm3
CnHm emission (13%Q)71 mg/Nm328 mg/Nm390 mg/Nm3
Particulate emission18 mg/Nm317 mg/Nm315 mg/Nm3
Efficiency76,7 %82,8 %80,0 %
ModelAstro 3MF Astro 4MF
Fire regime Continuous use
Nominal output 8 kW
Chimney connection (diameter) 150 mm
Weight +/- 140 kg
Recommended fuel Brown coal briquettes Anttracite coal
Fuel property 3" - 6" - 7"12/22 20/30
Mass flow of flue gases 7 g/s8.6 g/s
Flue gas temperature in the measurement section252 °C247 °C
Temperature at the appliance outlet440 °C301 °C
Minimum draught12 Pa12 Pa
CO emission (13%)0,13 %0,16 %
NOx emission (13%)161 mg/Nm³116 mg/Nm³
CnHm emission (13%)45 mg/Nm³85 mg/Nm³
Particulate emission5 mg/Nm³
Efficiency79,8 %79,5 %

Appendix 2:Measurements

ASTRO 3MFP

DOVRE ASTRO 3MFWB - ASTRO 3MFP - 1

ASTRO 3MFWB

DOVRE ASTRO 3MFWB - ASTRO 3MFWB - 1

DOVRE ASTRO 3MFWB - ASTRO 3MFWB - 2

ASTRO 4MFP

DOVRE ASTRO 3MFWB - ASTRO 4MFP - 1

ASTRO 4MFWB

DOVRE ASTRO 3MFWB - ASTRO 4MFWB - 1

DOVRE ASTRO 3MFWB - ASTRO 4MFWB - 2

Appendix 3: Distance from combustible material

ASTRO 3

Minimum distances for versions without heat shield:

DOVRE ASTRO 3MFWB - ASTRO 3 - 1

If the distance between the connecting tube and combustible materials is less than 300mm the connecting tube should be protected.

  1. Combustible material
  2. Incombustible material, thickness 100mm

Minimum distances for versions with heat shield:

DOVRE ASTRO 3MFWB - Minimum distances for versions with heat shield: - 1

  1. Combustible material
  2. Incombustible material, thickness 100mm

ASTRO 4

Minimum distances for versions without heat shield:

DOVRE ASTRO 3MFWB - Minimum distances for versions without heat shield: - 1

DOVRE ASTRO 3MFWB - Minimum distances for versions without heat shield: - 2

If the distance between the connecting tube and combustible materials is less than 300mm the connecting tube should be protected.

DOVRE ASTRO 3MFWB - Minimum distances for versions without heat shield: - 3

  1. Combustible material
  2. Incombustible material, thickness 100mm

Minimum distances for versions with heat shield:

DOVRE ASTRO 3MFWB - Minimum distances for versions without heat shield: - 4

  1. Combustible material
  2. Incombustible material, thickness 100mm

ASTRO 3 and ASTRO 4 - Dimensions of fireproof floor plate

DOVRE ASTRO 3MFWB - Minimum distances for versions without heat shield: - 5

DOVRE ASTRO 3MFWB - Minimum distances for versions without heat shield: - 6

Minimal dimensions of fireproof protective plate

A (mm)B (mm)
Din 18891 500 300
Germany 500 300
Finland 400 100
Norway 300 100

Appendix 4: Diagnostic diagram

Problem
Wood will not stay lit
Gives off insufficient heat
Smoke emissions into the room when adding wood
Fire in stove is too intense, is hard to adjust
Deposit on the glass
Possible cause Possiblesolution
Insufficient draughtA cold flue usually failsto create sufficient draught. Follow the instructions for lighting in the "Use" chapter; open a window.
Wood too damp Use wood with no more than 20% moisture.
Logs too largeUse small piecesof kindling. Use split logs no larger than 30 cm in circumference.
Wood stacked incorrectlyStackthe logs in a way that allows adequate air flow between the logs (open stacking, see "Burning wood")
Chimney does not work properlyCheck whether the chimney meets the requirements: at least 4 metres high, right diameter, well insulated, smooth inside, not too many bends, no obstructions in chimney (bird'snest, too much soot deposit), hermetically tight (no chinks).
Chimney stack incorrect Sufficiently high above the roof, no obstacles in the vicinity
Air inlets set incorrectly Open the airinlets completely.
Stove connected to the chimney incorrectlyConnection should be hermetically tight.
Vacuum in area in which the stove is installedSwitch off extraction systems.
Insufficient supply of fresh airProvide an adequate air supply; if necessary use outside air connection.
Adverse weather conditions? Inversion (reversed air flow in chimney because of a high outside temperature) if required, installan extra hood on the flue to increase the draught.
Draught in the living roomAvoid draught in the living room, do not place the appliance near a door or heating air ducts.
Flames touch the glassMake sure the wood is not positioned too close to the glass. Slide the primary air inlet cover closer to the "Closed" position.
Stove is leaking air Check the door seals and stove joints.

Index

A

Adding fuel.15

Adding wood smoke emissions into the room.28

Air control.14

Air inlets 12

Air leak.17.

Air supply for fire.15

Anthracite coal.12

Ash pan remove .7

Ashes remove .15

Ashtray open 15

B

Bearing capacity of floor

bearing capacity 6

Brown coal ash 13
burning 13

Brown coal briquettes 11

Burning
adding fuel. 13
anthracite coal. 13
brown coal briquettes. 13

  1. Burning wood 12
  2. add fuel.15
  3. adding logs 17
  4. appliance is hard to adjust.
  5. fire is too intense.

insufficient heat. 16, 28

C

Carpet 6

Cast iron fire resistant. 7 inner plates. 7

Cast iron inner plates. 7

Chimney
connection diameter. 18-19
connection to 11

height 5

prepare connection 8

sweep 16

Chinks in appliance 17

Clean glass 16

Cleaning appliance 16

Coal ash content 12

Combustible material distance from 24

Combustion air control. 14

Connection measurements 20

Connection collar for connection to chimney 8

Connection set for outside air supply. 9

Connection to chimney 8
at top. 8
top 8

Connection to outside air supply.. 9

Control air supply. 15

Cover on flue. 5

Creosote 14

D

Damage 7

Damp wood. 11

Door open 7 sealing rope 17

Draught.18-19. Drying wood 11

E

Efficiency 18-19

F

Filling height 13

Fire extinguishing 15 lighting 12

Fire-resistant inner plates maintenance 16 remove .7

Fire going out. 15

Fire regime.18-19

Fire safety

distance from combustible material.24....

floor 6

furniture .6

walls 6.

Fireproof inner plates

warning 11

Floors

fire safety.6

Flue

maintenance 16

requirements.5

Flue gas

mass flow.18-19.

temperature.18-19

Fog, do not burn wood.15.

Foot

cover plate. 10

Fuel

adding 15

adding wood 13

anthracite coal 11-12

brown coal 11

brown coal briquettes 11

necessary amount 16

required amount. 16

suitable.11

unsuitable 11

wood 11

G

Glass

clean 16

deposit 28

H

Heat, insufficient 16

Heat,insufficient 28

Hood on the flue 5

1

Inner plates

cast iron. 7

vermiculite 7

Inner plates, fire-resistant

remove 7

Install

connection set for outside air supply. 9

Installation

measurements 20

K

Kindled fire 12

Kindling 28

L

Lighting 12

Lubricant 17

Lubricate .17

M

Maintenance

chimney 16

clean glass. 16

cleaning the appliance 16

fire-resistant inner plates. 16

lubrication 17

sealing 17

Measurements 20

Mist, do not burn wood 15

N

Nominal output 16, 18-19

0

Open

ashtray 15

door .7.

Outside air

install connection set.9

Outside air intake

connection to. 11

Outside air supply 9

P

Paint finish 11

Particulate emission. 18-19

Parts, removable 7

Prevent a chimney fire. 14

Primary air inlet 12

R

Removable parts 7

Removal of ashes.15

Remove ash pan.7.. fire-resistant inner plates 7

Remove ashes.15

Removing ash brown coal.13

S

Secondary air inlet 12

Smoke on first use. 11

Smoke emissions into the room 4,28

Softwood 11

Solving problems. 16, 28

Stacking logs. 12

Storing wood 11

Stove window cleaner. 16

Suitable fuel. 11

Supply of outside air. 5

Sweep chimney 16

T

Tar 14

Temperature 18-19

U

Unsuitable fuel. 11

V

Ventilation 5. connect outside air supply 9 rule of thumb 5

Ventilation louvre 5

Vermiculite fire-resistant 7

Vermiculite inner plates 7

W

Walls fire safety 6

Warning chimney fire 4,11,14

combustible materials. 4
fireproof inner plates 11

glass broken or cracked 4, 17

hot surface 4
regulations 4

stove window cleaner 17
terms and conditions for insurance 4
ventilation 4-5

Weather conditions, do not burn wood. 15 Weight 18-19

Wood 11
damp 11

does not keep burning 28

drying 11
right sort. 11
storing 11

Table des matieres

Introduction 3

(missing or bad snippet)

Ventilation de la piece

(missing or bad snippet)

Raccordement dimensions

Pose

dimensions 20

Manual assistant
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Product information

Brand : DOVRE

Model : ASTRO 3MFWB

Category : Heating