The combustion products, released during the combustion process, cools down and condenses on the inside of a chimney. Therefore, stainless steel liners are used to protect a chimney from aggressive condensate.
Fireplaces, stoves and other heating appliances with a closed combustion chamber are used in energy-efficient buildings. For such fireplaces and stoves, air for combustion is taken from the outside and supplied through chimney ducts. It helps to maintain the required building airtightness.
Condensing or gas boilers eliminates combustion products with positive pressure. Special stainless steel chimney system has been developed to withstand the pressure and resist the resulting aggressive condensate in the chimney tract.
Collective buildings, also called multi-apartment buildings, can be heated individually by installing a separate heating appliance for each apartment. Each heating appliance has a separate chimney that connects into one chimney system.