How does the hot water production work?

How do the hot gases get into the heating?

Through the combustion hot gases develop with a temperature between 600- 800 °C. From the combustion chamber they stream into water- cooled, metal pipes- so called heat exchangers- and give off heat to the heating water. The hot combustion chamber is also used for heating up water and is built into the water filled boiler- body. The hot stones heat up the walls of the boiler and the heating water. Through both processes of heat transfer the water reaches a temperature of 70- 80°C, will be saved there and can be used for heating up the under floor heating or your normal heating.

How is heating output determined?

Actual load of firewood and stoking intervals determines the heating output of wood stoves: 1 kg of wood equals to 3.5 kWh

For example when 7 kg of wood are burned every 3 hours, the average heating output could be estimated as follows:

7x 3,5 kWh = 24,5 kWh
24,5 kWh : 3h =   8,16 kW

This total output is shared between the tiled walls of the stove (40%) and water jacket / heat exchanger (60%), hence the result is: 3.26 kW provided as radiation/warm air, and 4.9 kW as the actual output of water boiler.