Biomass Boilers

Biomass fuel is energy that has been created through photosynthesis and stored in organic matter. That fuel often takes the form of wood products, dried vegetation and crop by-products.
The most common form of biomass fuel is wood from trees. This form of fuel has been used for humans for a very long time and this continues to be the case.

Wood Pellets

Wood Pellet Boiler Principals

Wood pellet boilers are a practical and safe way to deliver hot water and heating needs to your home and behaves much the same as a traditional oil or gas boiler.
By using a hopper attached to a pellet store the burner is automatically fed fuel as required by the system. The hopper itself can be attached to various sizes of pellet stores depending on rates of consumption and available space!

Our biomass boilers run on wood pellets which are one of the most efficient forms of off-gas fuels. These can be sourced from suppliers in a “closed carbon cycle” system where the amount of carbon emitted during the burning of the fuel is balanced by the planting of trees. This massively reduces the net carbon being released into the atmosphere as the trees planted remove the carbon dioxide from the atmosphere.

Grant Biomass Boilers

We are pleased to be able to supply the full range of Grant Biomass boilers.
The award-winning patented condensing heat exchanger fitted inside the boilers make them some of the most efficient boilers on the market in the UK.

Spira condensing wood pellet boiler

The Grant Spira boilers are available in outputs of 5-18kW, 6-26kW and 9-36kW and come complete with adjacent pellet hopper and feed auger which supply the boiler with fuel.
There is also the option of increasing the heat output with a secondary boiler within the system to achieve 11-44kW, 12-52kW, 15-62kW and 18-72kW. This ability combined with the high condensing efficiencies achieved in this boiler makes the Spira unique option when considering a biomass boiler.

Features

Grant Spira
  • MCS approved
  • Award winning condensing heat exchanger
  • DEFRA approved under the clean air act
  • Automatic pellet feed and ignition
  • Self cleaning heat exchangers and brazier
  • Integrated pellet store
  • Flue box with integral fan/draught stabiliser
  • Modulating burner

How it works

The boiler are design to be installed in damp free environments such as a garage or outhouse.
Once started the boiler is fed by an auger which feeds pellets into the burner and ignition element. The system automatically modulates the feed of pellets to hit the set temperature and pushes the heat generated into the boiler’s primary heat exchanger. This heat energy is from the exchanger is then transferred to the radiators and other heating elements of the properties heating system.

Up to 20% of the energy produced in modern pellet boilers is lost into the atmosphere through the waste gases produced. In Grant pellet boilers a secondary condensing heat exchanger has been designed to capture this lost energy and return greater efficiencies in fuel consumption.

Maintenance

The Grant range of pellet boilers requires very little maintenance thanks to their automatic self-cleaning system for the burner and heat exchangers. By using a wood pellet with a low ash content the boiler maintenance can be further minimised as larger amounts of pellets can be burned before requiring emptying.

Vecta condensing internal wood pellet boiler

Instead of having to house the pellet boiler in an outhouse the Vecta has been designed as a direct replacement for a floor standing fossil fuelled boiler. With its quiet operation and sleek looks it makes biomass heating a viable proposition for most off-gas homes.

Features

Grant Vecta Internal
  • Modulating output of 4-16kW
  • Award winning condensing heat exchanger
  • Weather compensation
  • Automatic pellet feed and ignition
  • Self cleaning heat exchangers and brazier
  • Lambda sensor
  • Automatic was system for condensing unit
  • Simple to install and maintain
  • Whisper quiet operation
  • Top fill 60kg integrated hopper
  • Nett efficiency of 90.6% (reduced load) up to 94.8% (full load)

Weather compensation

The Vecta generates greater efficiencies by monitoring the outside temperature and adjust the systems water temperature to match a heat output closer to the needs of the home. By actively monitoring and adjusting its output the Vecta uses less fuel and makes the whole heating system more efficient.

Filling the hopper

A 60kg top fill integral pellet hopper feeds the boiler with its fuel. Having no separate hopper means that the system is much more compact and can be bag filled unless a bulk store is required in which case one can be fitted with a vacuum system to automatically fill the integral hopper. Alternatively, an optional bolt-on store can be fitted to the side of the Vecta which increases the capacity of the systems pellet storage from 60kg to 200kg!

Vecta condensing external wood pellet boiler

Where space is limited inside the home and an external boiler is preferred then the external Vecta is the perfect option. The outdoor module is full waterproof and will allow you to take advantage of the financial incentives under the Domestic RHI and reduce heating bills.

Features

Grant Vecta External
  • Modulating output of 4-16kW
  • Award winning condensing heat exchanger
  • Automatic pellet feed and ignition
  • Self cleaning heat exchangers and brazier
  • Lambda sensor
  • Automatic was system for condensing unit
  • Simple to install and maintain
  • Whisper quiet operation
  • Top fill 60kg integrated hopper
  • Nett efficiency of 90.6% (reduced load) up to 94.8% (full load)

Side Pellet Store

The Vecta External is available with an optional additional pellet storage unit which can be bolted onto the side of the boiler. This store increases the capacity of the systems pellet storage from 60kg to 200kg and comes within a feed auger and cable together with a weather proof external flue system inspection pipe.

Domestic Renewalable Heat Incentive

The current tarrifs for the RHI can be found here Ofgem factsheet