User guide

Burning wood in stove for the first time

A new stove is capable to serve you for many years, however, you should wait patiently a few days until it is completely dry. Early burning of wood in stove may result in permanent damages in stove structure, which shall be not covered by warranty. Heat-conducting stone had lain in the form of subsoil resources a couple of billion years waiting for a moment when it was taken into use as the stove stone. Over millions of years, having outlasted several ice ages, the stone got different inner stresses that have to be eliminated through cautious first heating. The glazed tiles structures normally contain moisture which should be removed in the prescribed order when stove first shall dry at room temperature and then carefully heated according to the guidance. If the instructions are properly followed during the first period of use, the stove can be normally fired even if it will have stayed without use for a long time. In the beginning draft may be worse than in its normal working condition when all stove structures get dry.

Taking a new stove into use

  1. 1. Allow at least one week to get stove dry – chimney shutters have to be open all the time and the room temperature must reach a minimum of +15 ˚C. If the room temperature is lower than that, drying time has to be extended. Alternatively, you may use a warm air blower or other similar heating device.
  2. 2. Start heating carefully with a small amount of wood (1-2 kg). Keep chimney shutter open over the whole starting period of use. You may use in both hearths of fireplaces with oven the same amount of wood (1-2 kg), heating them in turn. In small stoves wood should be placed in the upright position and in big stoves and ovens wood is placed horizontally.
  3. 3. The amount of burning wood should be increased gradually so that on the fifth day of heating you could burn the full stove of wood which makes ¾ of the stove height.
  4. 4. Beginning from the fifth day of heating you may already heat the stove normally according to the user guide. Maximum permissible wood amount is two stove-full a day. You should only use dry, e.g. firewood which stayed at least one year. Do not burn in stove litter as it can cause resinification of chimney channels and emission of pollutants.

Before making fire

Make sure that ash-pan is not full. Close mechanical ventilation and (stove) air filter. If a ventilation system has a switching device, you should use it. When making fire, open stove air vent if necessary. Open chimney shutter and air vent of the stove access door and make sure that there is enough draft in the chimney. If the stove has a summer panel, open it, too. To check draft, you may light a match in the stove. When the stove has been out of use for a longer time and there is no draft in the chimney, in order to achieve the sufficient draft, you need to take off the chimney access door and burn inside chimney a ball of newspapers firmly pressed together. After that, if draft has been established, you will be able to make fire in the stove.


You should only use dry firewood, e.g. wood that has been drying for at least 1 year. Wood should be split to burn properly. Bring wood into house a day before to allow them to dry.

Making fire

Fill in half of hearth with wood. Firewood in small fireplaces is placed in upright position while in bigger fireplaces, stoves and ovens wood is placed horizontally. Make fire with a help of paper, wood bark or a small piece of wood. Do not use flammable liquid! To reduce air pollution, try to make fire from upper wood logs.

Burning wood

After making fire, close the hearth access door and open the air vent of the ash-pan until the end. If the stove has the summer plate, you should close it after wood have started burning properly. Watch burning and make sure that flames are all right and there is sufficient supply of air. In that way heat accumulating capacity of the fireplace will remain good and burning stay clean. After the first stove-full of wood will have burned until charcoal is black, you may add another stove-full of wood. Before adding wood, close air vent of the fireplace ash door. You may burn in the hearth maximum of two stove-full of wood a day. The air supply can be reduced after charcoaling starts. The best result can be received in case of daily heating of Lappi Uuni stove.


When damp or tarred wood is burned in fireplace and draft in chimneys is bad, the channels will become tarred as well.

Tar collected inside the chimney may start burning, causing burning of carbon deposit. Always call fire-fighting division immediately in case of deposit burning, even when it has stopped burning!

Never leave the stove with burning fire unattended.

Always follow firefighters instructions and official regulations. Contact local firefighting official or Lappi Uuni technical support whenever you have a suspicion in regard to fire safety of the stove. Remember that any fire is dangerous! Chimney channels should be cleaned at least once a year. Cleaning of chimneys is the property owners responsibility. The environment and location of structure at the hill bottom or among big trees may hinder draft in the chimney. Draft in chimneys appears when warm air inside the chimney causes the air movement. Poor draft can be enhanced by weather conditions, for example, wind and rain, or low pressure inside the room. We recommend you to put hood on top of the chimney, it will keep chimney dry, extend chimney life span and improve draft.


Cleaning of stove surface

Polvijärve heat-conducting stone does not collect grime easily. However, grease and grime should be cleaned from the surface as soon as possible. Stove should be always cleaned when it is cold. Stone surface can be cleaned using water solution of dishwashing liquid. Spread washing liquid over the stone surface and leave to act before rinsing it clean. Avoid unnecessary cleaning of joints between tiles. A special detergent should be used for cleaning of glazed tiles.

Cleaning of doors(access doors) glasses

Door glasses should be cleaned regularly in order to avoid accumulation of soot deposit on glass surfaces. The easiest way to clean glass is to take some ash from ashpan with damp utility paper and rub glass with paper. After being carefully cleaned with damp utility paper, glass should be dried.

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