Central Heating Boilers Fuelled by Wood Pellets

Wood pellet boilers are green, easy to live with and convenient. They function just like fossil fuel boilers – but much more cleanly. So you can retro-fit a wood pellet boiler to a fossil fuel system as a stand-alone heat source – or have the two working alongside each other.

Features such as automatic transport of pellets to the combustion chamber, automatic ignition, self activated cleaning and large ash containers are established hallmarks of the modern HDG Pelletronic boiler control.

Pellet boilers are also astonishingly efficient, with advanced combustion technology and thermostatic controls ensuring that none of the energy produced is wasted. HDG Compact boilers have Lambda combustion control technology for constant, precise heat performance..

wood pellets

Wood Pellets

Pellets are made of 100% natural wood. Shavings and sawdust are compressed under high pressure and pressed into small cylindrical rolls and held together by lignin, contained naturally in the wood. This results in a clean, convenient fuel with a high calorific value and very low ash content (0.2%). Every year, more wood is renewed than is consumed. All of these facts are what makes the most convenient of all wood fuels such an interesting alternative in terms of both ecology and economy.

hdg logo
 pellet master boiler
Compact 50 pellet boiler 
 compact 100 pellet boiler

Especially Clean

The advanced combustion technology of HDG pellet boilers are perfectly designed to burn pellets as a fuel, resulting in very low emission values. Extremely high efficiency levels are also achieved through the combustion of this environmentally friendly fuel.

Especially Economical

Optimized combustion technology results in low pellet consumption. An advanced thermostat controls the boiler temperature ensuring that only the required amount of heat is produced.

Absolutely Safe

The HDG Pellet boilers have been subjected to strict in-house and independent safety tests. The cellular wheel sluice reliably prevents back-burn and the escape of low temperature gas. This sluice wheel, combined with an integrated water extinguishing system provides total safety.

Especially Convenient

Pellets are easy to handle. They’re less bulky and cleaner than logs or wood chips, uniform in size and shape and supplied either in recyclable bags on pallets or blown directly in bulk for storage in a silo or bunker. From the store, pellets can be transferred by vacuum or an auger automatically, as they’re needed, to the boiler. The feeding systems are intelligent, only moving just the right volume of pellets to the combustion chamber, so the fuel supply adjusts continuously to changing heating needs.

The Mechanical Integrity of the HDG Pellet Boilers

  • Automatic cleaning of the heat exchanger surfaces.
  • Tried and tested step grate technology prevents the formation of slag; the grate movement provides for automatic ash clearing into a removable container.
  • Automatic ignition via hot air blowers provides for an efficient, short ignition phase and fast heating up to the operating temperature.
  • The pellet management system has been designed to ensure minimum wear and energy expenditure.
  • Unique combustion and performance control due to the combination of combustion chamber temperature. sensor and Lambda sensor, giving a system that is emission and performance co-ordinated
  • The Lambda sensor is mounted in a protected position, for the longest life possible.
  • A precision designed cellular wheel sluice, together with existing pressure compensation reliably prevents back-burn and escape of low-temperature gas.

HDG Wood Pellets Boilers