| 摘要 |
<p>The combination central-heating and hot-water system has a corrosion-resistant vessel heated by gas or oil, in which the heating and tap water is prepared. A pump (3) circulates the water via a ring main of corrosion-resistant pipe through radiators and past the taps and back to the vessel, and the radiators and taps can be mounted in the main in any desired sequence. The radiators (6) are connected in series, without bypass pipes, in the ring main (4), and have heat-insulating cladding. Controls on the cladding allow heat emission from them to be shut off.</p> |
