Do I want to heat the room exclusively with a Tonwerk storage heating stove, do I want to augment the installed heating, or do I want to connect my Tonwerk storage heating stove to the central heating system? Your specialised dealer will assist you in all of these questions.
Preparations for firing
Heating in the transition time and in difficult conditions
Vent pipe and ventilating system
Drying paint on the stovepipe
Wood does not ignite when stove is fired | fire just smoulders away | fire extinguishes
- open combustion air slide
- kindling unsuitable
- wood too damp
- firewood too thick
- ash drawer full
Heavy sooting in the firing chamber | heavy sooting on the window
- open combustion air slide
- too little wood
- firewood damp or too thick
Smoke escapes from the stove
- assure adequate extraction in the chimney, light pilot fire
- provide for adequate supply of air
What is wood?
This is 50% carbon, 42% oxygen, 6% hydrogen, and 2% mineral substances, nitrogen, oils, resins, tanning agents, and colorants
… that is wood!
Where can I get my firewood?
Regenerated ready-to-burn firewood can be purchased from dealers:
- stove-ready, stored for at least two years
- predried, stored for one year
- fresh from the forest
TREATING FIREWOOD YOURSELF
Unseasoned wood can be purchased from the forestry office, owners of woodland, or the community:
- trunks lying in the forest
- seasoned trunks by the wayside
the wood should be dried for at least two years before it is burned!
Drying and storing wood
Wood types and calorific values
The various wood types have various calorific values:
|WOOD TYPES||CALORIFIC VALUE|
|beech, oak, locust||2100 kWh/rm|
|Douglas fir, pine||1700 kWh/rm|
|spruce, fir||1500 kWh/rm|
A Tonwerk storage heating stove can be fired with all of the above wood types!
Units of measurement for wood
|Solid cubic metre (scm):
||As its name suggests, the solid cubic meter corresponds to one cubic metre of solid as opposed to stacked wood.|
|Stacked cubic metre (stcm) or stere (st):||A stacked cubic metre or stere corresponds to one cubic metre of stacked wood including the gaps between layers. One stere equals 0.7 solid cubic metres.|
|Loose cubic metre (lcm):||The loose cubic metre is a measure for chopped firewood that is loosely packaged for trade and transport. One loose cubic metre is 0.7 steres or about 0.5 solid cubic metres.|
What happens when wood burns?
The combustion process on firewood can be divided roughly into three phases.
Heating and drying – In this first phase the water and other volatile substances stored in the firewood evaporate.
Pyrolysis – In this second phase the firewood decomposes at temperatures from about 150 °C.
Actual combustion – In this third phase the gases formed in the first two phases react with additional oxygen from the atmosphere to form carbon dioxide and water. Also any remaining charcoal burns completely with time in the combustion zone. Only ashes remain as the single residue of combustion. Each phase of combustion can be observed very easily on an open fire.
When the firewood was collected in the vicinity there are no additional CO2 emissions otherwise caused by the transport. Wood decomposing in the forest generates the same quantity of CO2 as the same wood burning.
General safety instructions
- Never leave children alone or unattended at a burning fireplace.
- Teach your children how to behave properly and operate safely the fireplace.
- Every stove gets hot when fired: risk of burning!
- Avoid touching the outside surfaces when the stove is operating.
- Do not burn refuse or painted wood.
- Dispose of the ashes only after they have cooled completely.
- Inform your specialised dealer without delay of defect gaskets.
- Observe the information in our operating instructions and make a proactive contribution to fire prevention and the protection of our environment.
Ask your local specialised dealer to contact you: he'll be pleased to offer you advice.