Hot water central heating system, has lowest points of radiators connected at each end to hot water risers and cold water downcomer

摘要

Hot water from the supply line (3), a riser, is carried by horizontal pipes (10) to radiators (1) where it is introduced at low connections. Water leaves each radiator at the same height, from an opposite connection, entering a pipe (9) connected to the cold water line (4). The riser connects to a water reservoir (2) filled with water to an internal point at the highest level (W) in the system. The cold water line (4) is connected to a upper cold water reservoir (2) with a maximum internal level (K) spaced (h) below W.