Oil firing installations
Single conduit system
Oil firing installation in which fuel oil is fed from the tank to the consumer equipment via piping and no fuel oil is returned to the tank.
Double conduit system
Oil firing installation in which fuel oil is fed from the tank via piping - the supply line - to the consumer equipment. Via a second piping - the return line - unused fuel oil is returned from the consumer equipment to the tank in the free outlet.
Industrial systems
These installations are subject to the requirements for an oil firing installation in the commercial business and in the public sector according to Section 62, Paragraph 2 WHG (in Germany). The fuel oil can only be fed to the consumer equipment via pressure lines by means of an oil feed pump.
Central oil supply
A central oil supply installation is required to supply several consumer units from a tank / battery tank system.