| 摘要 |
Primary water enters the circuit from a remote heating system, and is fed to two user water exchangers (20,21) via a conduit (8). The two units are series-coupled and freely located in a common casing (9). The radiator exchange unit (22) is fitted around the casing (9), and is connected to the primary water via a pipe (23). Primary water is fed to one of the user water exchangers (21) via the casing, and then flows through it. To the connecting conduit between the two hot water exchangers is a conduit for heat exchange circulation, and comprising a pipe with small dia. joined to the connecting conduit (25), and a second pipe inserted in the first via an aperture in the casing, and having a dia. permitting the two pipes to be soldered together. Around the second pipe is fitted a cone, directly welded to the casing, and soldered to the second pipe at a point apart from that where the two pipes are soldered together. |
