The Eco Link Domestic Boiler range offers efficient and environmentally friendly technology for heating systems using logs, pellets and wood chips. Clean emissions, minimal energy requirements, reliable operation and simplicity of use are therefore essential elements of our products. This is state-of-the-art technology. Each boiler system comes complete with an outside temperature control as well as a fully automatic ash-disposal function.
The key features of the unit include:
- Wood chip boiler with tilting grate in ceramic-lined retort,
- Speed controlled draught ventilator for operation independent from chimney draught,
- Automatic ignition,
- Automatic ash disposal system,
- Lambda control with automatic fuel recognition,
- Complete control including hot water tank management and outside temperature controlled heating circuit integrated in the boiler,
- Wood chip conveyor system with proven floor agitator up to six meters in diameter,
- Shortest assembly times through modular system, pre-wired and ready to use.
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All regulators and controls are integrated within the upper part of the central heating boiler and are easily accessible. There is no external housing for switches and so the boiler is complete, with all wiring in place, when is leaves the factory. This saves both time and work. All you need to do is plug in the drive motor and safety switches for the feeder and stoker screws, wire the pumps, mixers and temperature sensors of heating circuits, connect the boiler control to the electric power supply, and set the parameters. And then you can already start up your central heating system.
Rough industrial standard wood chips from a saw mill can also be handled without any difficulty. The feeder screw has a diameter which allows for pieces up to 5 cm (G50) to be conveyed smoothly into the boiler – this can also handle individual blocks with a length of up to 12 cm and a cross-section up to 5 cm2
The pitch of the conveyor screw increases progressively along the length of the enclosed feeder canal, loosening and separating the chips as they progress. This ensures that the flow of fuel is both smooth and quiet.
A boiler always works most efficiently when it is clean – and stays clean – throughout the heating season. And so, any automatic wood-burning heating system must provide for automatic ash removal throughout the system: from the grate to the heat- exchanger. Turbulators keep the heat-exchangers tubes clear and the fire grate is regularly tilted. Two conveyor screws, driven by a single motor, carry the ash from the collection bin under the grate and also the fly ash from the heat exchangers, to the main ash bin. This can then simply be removed from the front of the boiler. There are no narrow sections in the ash channels so they cannot be blocked by stones or nails.
Our wood chip heating systems from can be adapted to all types of chimneys. The induced draught fan fits into small diameter chimneys. The speed regulator controlling the draught, and the continuously regulated flaps controlling the input of the combustion air mean that no draught limiters are needed in the chimney. By setting the exhaust temperature, condensation is avoided in the brick-lined chimney and, modern stack design, this exploits the benefits of the low temperature serviceability.
If there is a lack of air, complete combustion cannot take place. Whereas, if there is too much air, the warmth produced by the boiler is not fully utilised, too much of the warmth being produced simply passes up the chimney as wasted exhaust gas and the efficiency is reduced. The lambda control regulates the primary and secondary air depending on the type of fuel.
Active controls ensure reliable operation
The reliability of operation of our range of boiler systems is ensured by comprehensive measurement and feedback of information about the status of all components and functions of the system (speed of induced draft fan, position of air flaps, oxygen level in the chimney flue, flue temperatures and water temperatures). If a large stone or similar object blocks the fuel supply screw, instructions on how to quickly deal with the problem are given on the display panel.
Fuel feed
A floor agitator is the most effective way of moving the fuel from the storage area next to or above the boiler room and into the conveyor screw. A ‘building block’ approach to the installation of your heating system means that various sizes of sprung blade agitators are available – with a span ranging from 1.5 m to 4 m in diameter for standard blades, and from 4.5 m to 6 m for hinged blade arms.
A charge screw conveyor with a diameter of 250 mm and a transport capacity of 30 m3/h, makes it possible to feed fuel into otherwise inaccessible cellar areas. Our range of fuel storage equipment also covers special needs and includes and hydraulic scraper floor for large fuel bunkers, a rotating pivot auger screw for high silos, as well as link and inclined screw conveyors to overcome differences in height.
Click here to see details of our domestic boiler range.
