Tarm Biomass Bonus Plus 30, Инструкция по установке и эксплуатации

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Bonus Plus Instructions Tarm Biomass 1-800-782-9927 Version 11/14 Page 12
0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
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100
Moisture %
Btu/Lb
Product Description and Requirements for Safe Operation > Fuels
Fig 2.2
This chart shows how many Btu’s are lost by burning fuel with higher moisture content. We
recommend fuel with a moisture content of 20% or less.
The Bonus Plus is made to burn natural firewood . Both hardwood and softwood are suitable, but oak
should not be burned as the only source of wood for long periods because of its high acid content.
For effective gasification, the wood must be dry, i.e. moisture content
15-25% . In addition to increas-
ing the likelihood of generating creosote in the boiler, burning wet wood uses a substantial amount of
the wood energy to evaporate the water present in the wood, reducing the available energy for heat
(Fig 2.2) .
The wood will dry out most quickly if it is cut into the appropriate length and split into pieces 4”-
6” (100-120mm) thick. The best length is 20” (0.5 m) for the Bonus Plus 30. The wood is best stored
in the open air under cover. Ideally the wood should be stored for at least one and a half years (two
summer seasons). Do not burn small pieces of wood or wood chips in the boiler as they can block the
combustion slot. Also, it can be difficult to control the combustion process effectively with small
wood pieces and chips.
WARNING
If a fan is used in the fuel storage area, it should be installed so as not to create negative
pressures in the room where the solid-fuel burning appliance is located.