Apartment building Magnusstrasse - Heating / Ventilation

- The heat energy required to heat the building and provide the domestic hot water is now generated by a wood pellet firing system. The combustion gases from the wood pellet boiler are led through a newly created chrome steel chimney over the roof. The fuel storage room is located right next to the heating centre. The heat for the rooms is visibly conducted via new risers and distributed using new radiators. These were placed on the inner walls in the area of the current old oil stoves. Horizontal heating walls were installed in the bathrooms. - A centralized ventilation with heat recovery, typical of the Minergie buildings, was added to the building. A central air treatment unit in the basement serves all apartments. A basic point of the Minergie concept is that mechanical ventilation not only guarantees good air quality, that also saves energy with the heat recovery unit, but without manual ventilation allowing the adjustment device to be easily accessible in the apartment without individual devices. The outside air is drawn in from the passage facade to the courtyard at a height of approx. 2.5 m from the floor.

- The system works because a new central pellet boiler has been installed instead of decentralized oil-fired stoves, improving energy efficiency. The intervention for heating was done entirely internally without repercussions on the façade that is under heritage protection. - The apartments are accessed via two separate climbing zones. The fine distribution takes place in the toilet/bathroom and corridor ceilings. In the new roof section, individual supply and exhaust air pipes with plastic pipes were inserted into the wooden elements. The air enters the room via an outlet grille over the doors. In the wet rooms, it is drawn off again via poppet valves. Inside the apartment, the air circulates through the newly made door slots. The exhaust air is returned to the air treatment unit through insulated pipes and ducts made of galvanized sheet steel and blown out through a light shaft in the courtyard facade.