| 摘要 |
<p>The heater comprises a double-walled tank, the inner chamber being connected to the washing circuit and the enclosing outer one having a heating water inlet and outlet. The latter (15, 16) are connected to a heat exchanger (11) mounted in the flue of a central-heating boiler (1). The heat exchanger can be mounted at a higher level than the tank (6), a circulating pump (14) being mounted in the piping (10) between it and the outer chamber (8).</p> |
