| 摘要 |
<p>A water delivery system is disclosed, with a boiler (2) which is connected on the outlet side to a circulation pipe (4) which is guided back into the boiler (2), a circulation pump (8) arranged in the circulation pipe, a cold water pipe (6) which is connected to an inlet side of the boiler, and a flow sensor (14) which is arranged in the cold water pipe or circulation pipe and which is coupled to the circulation pump, the flow sensor and the circulation pump (8) being connected by a time switch (12) which switches the circulation pump on depending upon the flow in the cold water pipe (6) or circulation pipe and switches it off after the expiry of an after-running time, a shut-off valve (10), which is coupled to the time switch (12), being arranged in the circulation pipe. <IMAGE></p> |
