A compact and highly efficient oil and gas boiler. Optimal for using with modern fuels, such as bio-gas and bio-oil, and can be delivered with burner, safety equipment and a boiler circulation package.

The Osby Parca Trio is a highly efficient, welded 3-pass boiler with low emissions intended for oil, gas, bio-oil, and bio-gas. The boiler is built so that the flame gets more compact and shorter, this reduces the time that the flame stays in the high temperature zone. The construction also allows for better flame cooling by the wet surfaces and a reduction of the NOx emissions.

The flue gas tubes are extended over the plate so that a ”fin-effect” that redirects the heat to the welding seams is created, a feature that stops condensation from appearing, and absorbs the condensation that appears — with less condensation the boiler life span is improved. The convection part of the boiler is equipped with flue gas tubes including turbulators that guarantee optimal heat exchange.



Type of fuel: Oil, gas, bio-oil, and bio-gas
Efficiency: Approximately 91% efficiency rate
Output effect: 65–1900 kW (depending on size and type of fuel)


Can be delivered with burner, safety equipment and circulation package
Low combustion emissions
Insulated flue gas chamber with double wall that reduces thermal losses
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