| 摘要 |
The water heater has a heat exchanger (1) whose primary circuit is connected with heating water supply pipe (3) and a heating water return pipe (4). A warm water mixer (11) is arranged in a warm water drain pipe (8) whose connection is connected with a source of water. The temperature of water lies below the warm water drain pipe. The secondary circuit is provided with an intermediate connection (10,12), which serves as the source of water whose temperature lies under the warm water drain pipe. |
