Commercial - Freedom Boiler Heating System



Commercial - Freedom Boiler Heating System
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Commercial - Freedom Boiler Heating System View Two Commercial - Freedom Boiler Heating System Enclosure
Freedom - Boiler

The AllGreen Freedom series is a high-efficiency, low emission, biomass boiler capable of burning a wide variety of carbon-neutral pelletized fuels. With output efficiencies exceeding 85%, the Freedom boiler burns wood pellets, agro-pellets, wood chips, grasses, grains, and other fuels. Boilers are available with outputs 600,000 Btu's per hour (175 KW) to nearly 4 million Btu's per hour (1.2 MW), enough to meet the heating needs of most schools, municipalities, hospitals, agricultural operations, manufacturing companies, and commercial buildings.

The Freedom series is based on a proven boiler design from Europe where over 20,000 units are in use. AllGreen has improved on this design by adding a sophisticated control system that constantly adjusts boiler output to match demand while maximizing efficiency and minimizing emissions. The Freedom boiler reduces costs 30-40% when replacing an oil or propane boiler, and up to 60% when replacing electric. But you don't need to replace your existing boiler -- the Freedom installs alongside it so you have a backup if needed.

A Freedom boiler pays for itself in as little as 3-4 years but provides low cost heat for many years beyond that. And since you'll be burning a renewable, carbon-neutral fuel, you'll also be doing your part to fight climate change and support the local green economy.


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Clean burning, high efficiency, pellet boiler that adds-on to an existing central heating system
  • SAVE MONEY - cuts winter bills by 30%-60% depending on current heat source
  • WIDE RANGE OF FUELS: the Freedom burns almost any kind of pelletized fuel including wood pellets, agro-pellets, grains, grasses and more
  • EFFICIENT - delivers more than 85% of the fuel's energy to the central heating system
  • EASY TO INSTALL - adds on to existing central heating system
  • SIMPLE TO USE AND MAINTAIN - electronic controls optimize operation and remove the guesswork
  • AUTOMATED ASH REMOVAL - boiler cleans itself.
  • VARIABLE HEAT OUTPUT - electronic controls vary the heat output based on actual demand for heat. The boiler can operate as low as 20% of rated output on a mild day, and then automatically step up to maximum output when a winter storm blows in.
  • CERTIFIED SAFE - meets European standards of safety for biomass boilers
  • "GREEN" - carbon-neutral, locally-sourced, renewable fuel means you're doing your part to support local jobs, fight climate change, and wean us off of foreign oil.
  • Proven reliability - introduced in 2000 in Europe, this boiler has thousands of satisfied users
  • Compact dimensions and low weight - fits easily in existing building or other weather-protected enclosure. It can also be ordered with self-contained, weatherized housing so the boiler and fuel storage can be located outdoors.
  • Easy operation and cleaning - electronic controls optimize combustion processes and take the guess-work out of operation and maintenance
  • Large fuel storage - the on-board storage bin holds fuel for 2-3 days. An optional bulk storage bin stores enough fuel to operate the boiler for weeks or months without reloading
  • Cast iron fire chamber - ensures long boiler life, even when burning fuel at 2000? F.
  • High efficiency - over 85% output efficiency
  • Safe - meets strict European standards of safety for biomass boilers
  • Low emissions - among the lowest particulate emissions of any biomass boiler.
  • Automatic ash removal - high efficiency combustion means fewer ashes to clean out, but when you must, it's easy and there's little mess!
  • Reliable - 5 year limited parts and labor warranty
Technical Specifications

Technical Dimensions


Product Specification Sheet - [not yet available]

Owner’s Manual - [not yet available]
Is the AllGreen Freedom really a boiler, meaning it boils water and works under pressure?
No. The Freedom is a "hot water" boiler. It heats water to only 180? F., well below the boiling point, so no steam is produced. And depending how the boiler is installed, it works at no pressure (open system) or very low pressure (closed system). As a safety feature, each system has a relief valve that opens if the internal system pressure rises to 30 psi, which it won't do in normal operation. As a further precaution, each boiler is safety tested to an internal pressure 75 psi before it leaves the factory.
Is the Freedom boiler ASME rated?
No. As a "hot water" boiler, the Freedom does not produce steam or operate at high-pressure. Internal pressures stay well below the 30 psi threshold above which boilers become "pressure vessels" and must be certified to ASME standards. That said, the Freedom boiler is designed to ASME standards, assembled by ASME qualified welders, and manufactured in plant certified to ISO 4001-2000. It meets TUV and all other European standards for hot water boilers.
Is the Freedom boiler an indoor or outdoor unit?
Freedom biomass boilers must be installed in a weather-protected location. If your facility does not have room for the boiler and fuel storage, the boiler can be ordered with a weatherized enclosure that can be placed outdoors.
Do Freedom boilers meet U.S. and Canadian safety standards?
Freedom biomass boilers must be installed in a weather-protected location. If your facility does not have room for the boiler and fuel storage, the boiler can be ordered with a weatherized enclosure that can be placed outdoors. Commercial-scale biomass boilers are a new to North America, and so there are no U.S. or Canadian safety standards that apply to this class of product. However, all electrical components used in the Freedom boiler are UL/CSA listed, and the boilers are certified to meet CE and other European standards of safety. AllGreen is currently working with U.S. test laboratories to develop applicable test protocols and safety standards for this new product class.
Does the Freedom boiler meet EPA emission standards?
Freedom biomass boilers must be installed in a weather-protected location. If your facility does not have room for the boiler and fuel storage, the boiler can be ordered with a weatherized enclosure that can be placed outdoors. At the present time, there are no particulate emission standards or test protocols that apply to commercial-scale biomass boilers. However, the Freedom boiler is based on a design platform that is similar to AllGreen's Reclaim boiler which has been tested and certified to meet U.S. Environmental Protection Agency particulate emission guidelines. AllGreen is also working U.S. test laboratories develop appropriate standards and test protocols for the Freedom class of product.
What are some of the ways I can use a Freedom boiler?
Freedom biomass boilers must be installed in a weather-protected location. If your facility does not have room for the boiler and fuel storage, the boiler can be ordered with a weatherized enclosure that can be placed outdoors. The Freedom boiler produces hot water for:
  • hydronic radiant heating
  • forced air heating (using a water-to-air heat exchanger and existing ductwork)
  • domestic and process hot water
  • a swimming pool or greenhouse
  • snow melt systems
What is the combustion efficiency?
Freedom biomass boilers must be installed in a weather-protected location. If your facility does not have room for the boiler and fuel storage, the boiler can be ordered with a weatherized enclosure that can be placed outdoors. While 100% combustion efficiency is impossible to achieve, the Freedom boiler comes very close. Pellets are burned at temperatures approaching 2000º F, assuring maximum gasification of the fuel. There's little particulate matter left to create smoke, creosote or ash.
What is the thermal efficiency?
Freedom biomass boilers must be installed in a weather-protected location. If your facility does not have room for the boiler and fuel storage, the boiler can be ordered with a weatherized enclosure that can be placed outdoors. Freedom is one of the most energy-efficient hydronic boilers on the market. It delivers over 85% of the energy contained in the fuel to the central heating system.
Can I heat more than one building with a single boiler?
Freedom biomass boilers must be installed in a weather-protected location. If your facility does not have room for the boiler and fuel storage, the boiler can be ordered with a weatherized enclosure that can be placed outdoors. Yes. A single Freedom boiler can provide heat and hot water for multiple buildings using insulated pipes or tubing. It can also heat greenhouses, barns, swimming pools, and even provide snow-melt for your walks and driveway. Keep in mind that each application adds to the demand on the furnace, so it is important to plan ahead and install a unit with sufficient capacity to handle the full load.
What size boiler do I need?
Freedom biomass boilers must be installed in a weather-protected location. If your facility does not have room for the boiler and fuel storage, the boiler can be ordered with a weatherized enclosure that can be placed outdoors. While the Freedom boiler will operate efficiently from 20% to 100% of rated output, it's best to size the boiler to meet the total demand for heat on the coldest days. Many factors must be considered in sizing the boiler, including local winter temperatures, size and insulation rating of the building(s) to be heated, efficiency of the heat distribution system, supplemental demands for heat, and so on. A qualified mechanical engineer can conduct an energy study to determine the boiler output required for your heating needs.
Will AllGreen design my hydronic heating system?
Freedom biomass boilers must be installed in a weather-protected location. If your facility does not have room for the boiler and fuel storage, the boiler can be ordered with a weatherized enclosure that can be placed outdoors. Yes. AllGreen works with local engineering firms to design and install our biomass boilers. These firms are familiar with local conditions including local building codes and regulations. If you do not already work with an engineering firm, we will find one for you.
What fuel do you recommend?
Freedom biomass boilers must be installed in a weather-protected location. If your facility does not have room for the boiler and fuel storage, the boiler can be ordered with a weatherized enclosure that can be placed outdoors. All product testing is completed using wood pellets. These are produced in two grades- Premium and Standard. The only different between the two is ash content. Standard grade fuel is usually up to 3 percent ash content, while premium grade is less than 1 percent. This difference is a result of the pellet contents. Standard pellets are derived from materials that produce more residual ash, such as tree bark or agricultural residues. Premium pellets are usually produced from hardwood or softwood sawdust containing no tree bark. Premium pellets make up 95 percent of current pellet product on the market and can be burned in all appliances. Standard pellets should only be burned in appliances designed to burn the higher ash content pellets. Your Freedom boiler can burn either premium or standard grade wood pellets.

The Freedom boiler will also burn agro-pellets, grass-pellets, corn, wheat, and other "formatted" waste products. If you intend to use one of these alternative fuels, please contact AllGreen first. We will help you determine what, if any, adjustments need to be made to the boiler to maintain optimum performance.
How long will a full load of pellets last?
Freedom biomass boilers must be installed in a weather-protected location. If your facility does not have room for the boiler and fuel storage, the boiler can be ordered with a weatherized enclosure that can be placed outdoors. The internal pellet storage bin on the Freedom boiler will store enough pellets to support 2-3 days of operation under normal conditions. Under severe cold conditions though, the bin may require daily reloads. The best solution is an optional external storage bin and augur that automatically refills the internal bin. An external bin can store enough fuel to last for weeks, or even months.
Does the boiler have burn back protection to keep stored pellets from igniting?
Freedom biomass boilers must be installed in a weather-protected location. If your facility does not have room for the boiler and fuel storage, the boiler can be ordered with a weatherized enclosure that can be placed outdoors. Yes. The Freedom boiler has multiple backup systems that maintain a safe separation between the combustion chamber and fuel storage. During idle times the control system periodically activates the augur to push a small amount of fuel out into the burn box - this reduces the risk of a smolder burn back through the augur. Should a smolder burn occur, the control system will detect it and dump water into the augur to extinguish the burn.
What is the combustion chamber made of?
Freedom biomass boilers must be installed in a weather-protected location. If your facility does not have room for the boiler and fuel storage, the boiler can be ordered with a weatherized enclosure that can be placed outdoors. The burn box is made of cast iron which will last for many years.
How hot does the boiler get?
Freedom biomass boilers must be installed in a weather-protected location. If your facility does not have room for the boiler and fuel storage, the boiler can be ordered with a weatherized enclosure that can be placed outdoors. Firebox temperatures reach 2000º F during the combustion process, but thanks to our unique design, most outside surfaces are only warm to the touch. However, some boiler surfaces can get very hot so be sure to observe the warning labels on the boiler to avoid injury. The water temperature is approximately 180º F when it leaves the boiler and 140º F on return. The exhaust temperature is approximately 350º F.
How big a chimney flue is required?
Freedom biomass boilers must be installed in a weather-protected location. If your facility does not have room for the boiler and fuel storage, the boiler can be ordered with a weatherized enclosure that can be placed outdoors. The flue size depends on the size of the boiler. The Freedom 900 requires a 9 inch flue. The Freedom 4000 requires a 20 inch flue.
Do I need a hot water storage tank?
Freedom biomass boilers must be installed in a weather-protected location. If your facility does not have room for the boiler and fuel storage, the boiler can be ordered with a weatherized enclosure that can be placed outdoors. A buffer storage tank is highly recommended because it improves system performance and assures constant availability of hot water. AllGreen can help you determine the optimum buffer tank size for your application.
Do I need a back-up source of heat?
Freedom biomass boilers must be installed in a weather-protected location. If your facility does not have room for the boiler and fuel storage, the boiler can be ordered with a weatherized enclosure that can be placed outdoors. No, but if it is the only source of heat, we high recommend a bulk storage bin for fuel. Most Freedom boilers are installed in locations which already have a central heating system. In these cases, we recommend retaining the old system and maintaining it as a backup source of heat.
If I have a problem, how do I get technical support?
Freedom biomass boilers must be installed in a weather-protected location. If your facility does not have room for the boiler and fuel storage, the boiler can be ordered with a weatherized enclosure that can be placed outdoors. Contact AllGreen Renewables at (866) 602-5329.
Call for information: 866-602-5329