Connecting a water-bearing furnace
A water-bearing stove is suitable to support a heating system or to heat it on its own. But the connection must be made professionally.
What to pay attention to when buying and connecting
The idea of heating a room with the radiant heat of the stove and at the same time heating water that flows into the heating system via a buffer store has something impressive , An existing wood-burning stove can be retrofitted with a water bag, but here it must be remembered that this drains heat from the installation room.
If the stove is not oversized, it makes sense to purchase a new model that provides more energy. The efficiency of a retrofitted stove is already significantly lower than in the case of a water-bearing construction ex works.
If a water-bearing stove is to be installed in the house, two important discussions must first be made. Once with the chimney sweep with regard to the site so that the stove does not pose a fire hazard. He also has the last word in dimensioning, so that there is no lack of oxygen in the room.
The heating engineer explains which buffer tank is needed and how the stove is connected to the heating circuit.
Theoretically, every DIY enthusiast can connect the stove to the heater, but if you do something wrong, the electronics damage the heating system and consume more wood than necessary after the connection. So it means here "hands off" even if the landlord is a very talented handyman.
A water-bearing stove requires a lot of technology
With the stove alone is not enough. In addition, a buffer tank, a return lift, a circulation pump and a control unit are required.
The stove becomes a second heater burner. While the normal burner will always provide heat when the heating system is requesting heat, a water-bearing stove will provide heat when heating in the installation room.
From the point of view of the heating electronics, it will inject heat even though it is not needed. Therefore, a buffer memory is needed to store the initially superfluous heat. The circulation pump ensures a water cycle between the stove and the storage tank. The control electronics, together with the return lift, prevent overheating and too cold water from reaching the storage tank.
The dimensioning of the individual components and the creation of a connection diagram are the responsibility of a qualified installer. A home improvement can make the appropriate wall and ceiling openings and lay the pipes. The actual connection and the first trial operation is again the task of the expert.
Costs of the system
A water-bearing stove for firewood costs about 3,500 euros, a pellet stove is twice as expensive. For the planning, the connection and the accessories is to be counted on approximately 6,000 euro.
Who does not want to make the wall and wall breakthroughs, should count on 500 to 1.000 euro additionally. The laying of the pipes also costs this amount.
Under certain conditions, government subsidies are possible, for example if the stove is connected to solar thermal energy. In most cases, the Schonsteinfeger or the house banks can provide information about this.
In spite of the high costs, the purchase is generally worthwhile, as a wood-burning stove heats up a room directly and provides heat in the rest of the house. If the stove supports oil heating, it may have amortized after four years.