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Wood Pellet Schematics

A wood pellet boiler can be connected to a heating system in a number of different ways. Here are a few examples.

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Wood Pellet Boiler System (Combi DHW)

This system layout is only available on boilers with a heat exchanger to allow the instant production of domestic water. The Star and Apollo models from Varmebaronen can both be used in this configuration. No water heating tank is required in this situation.

Pros:Simplest, cheapest installation. No separate water heating tank required. Cons:Only suitable for smaller houses. Can't cater for larger flowrates.

Wood Pellet Boiler System (No Buffer)

This system layout is most typical configuration for a wood pellet boiler and uses a water heating tank for the Domestic Water. In the layout above a solar system has also been included.

Pros:Can be combined with Solar Cons:Not suitable for homes with a peak heating demand of more than 20kW.

Wood Pellet Boiler System (Buffer)

This system layout allows wood pellet boilers to be used with larger houses with higher heat demands. It contyains a large volume of buffer water (between 500 litres and 2000 litres typically) and uses a water heating tank for the Domestic Water. In the layout above a solar system has also been included.

Pros:Suitable for any house size. Can be combined with solar. Cons:Added cost

Wood pellet boiler with a combination system

OR

Above: A wood pellet boiler can be combined with multiple heat sources (e.g. solar, stoves, ranges etc) into one large central combination tank (Proclean or FS model). This allows multiple heat sources to all contribute to the central heating needs of a house.

Pros: All heat sources can contribute to central heating and domestic water Cons: Adds some complexity to the installation