Functional Description - eta HACK 200 Installation Manual

Functional description

2 Functional description
Flue gas recirculation
temperature in the boiler's combustion chamber.
Lowering the combustion temperature is necessary for
very dry heating material:
• Pellets
• Wood chips (water content < 15%)
• Carpentry material (water content < 15%)
• Sawdust (water content < 15%)
• Miscanthus
The combustion temperature increases significantly
with these fuels, resulting in an increased risk of slag
formation and wear in the boiler.
Recirculating the flue gas from the boiler outlet back
into the combustion chamber increases the gas flow
through the grate and the fire.
Distributing the heat over a larger gas volume reduces
the combustion temperature. This also provides a
narrower and more stable temperature range. The
result is cleaner and more complete combustion and
prevention of slag build-up in the boiler.
lowers the combustion
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