HDG Wood-fueled boilers
4wood LLP are now supplying and fitting systems from the sophisticated range of ecological, environmental and economic, wood-fueled boilers. Download Brochure (PDF)
With a choice of systems suited to match just about every situation: below is an example of one such model.
Features of the HDG Navora 25kW
Fuel
- Spit log wood up to half-metre lengths (19″)
- Pressed wood briquettes
- Coarse cuttings and lumped wood waste
Area of application
- Private households
- Agriculture and forestry
- Commercial businesses
Properties
- Front-loading,
- 155 litres fuel chamber volume
- HDG Lambda-Control
- Automatic cleaning, integrated ash box
- Down-burning combustion technology
Benefits
- Very user-friendly and convenient
- Very long intervals between refills
- Low emissions
Special features
- 91 % efficiency
- Automatic cleaning of heat exchanger surfaces upon operation of the bypass damper
- Operated entirely from the front
- Meets the missions controls and safety requirements of most European countries
- Awarded the German KWF prize for innovation
Combustion-controlled, bottom-burning wood boiler. Pressure-tested, welded furnace body made of 5-6 mm tested boiler steel, fully lined filling chute (with heat-resistant special steel panels at particularly exposed points), sheet steel furnace lining, pre-assembled, powder-coated in green.
Large fueling chamber (150 liters, 560 mm deep) for logs up to 500mm and coarsely chopped wood for long refill intervals; highly temperature-resistant burn-off nozzle with special downstream combustion chamber for minimum emissions and maximum efficiency; power-controlled suction draught ventilator with servo drive for separate primary and secondary air control; oxygen and flue temperature sensors fitted ready to plug in; ergonomic design for convenient fueling using the large front hatch.
Lambda Control 1 boiler control units. The boiler control units of HDG Lambda Control have ingenious combustion control systems. The combustion values are determined through the oxygen sensor and the flue gas sensor. These values are evaluated and the primary and secondary air flaps then precisely regulated for continuously optimal values even under variable conditions.
