Is there a gap between Sierra water tank and condenser?

According to my understanding of Cerato water tank and condenser, there is generally no gap between them. The condenser acts as a heat exchanger and has a close structure with the water tank, which can effectively ensure that the water temperature in the water tank gradually rises to the hot water state. If there is a gap between the two, the water temperature will be unstable or there will be no heat. Therefore, once cracks are found, it is necessary to contact professional and technical personnel for maintenance and replacement in time.