In view of the situation that groundwater is directly pumped by water pump, the following pipelines are designed.

First of all, ensure that the cold water tank (water tower) is not lower than the hot water tank (solar water tank). First, replenish the cold water tank. Stop supplying water when the water is full. Open the two-way ball valve to replenish water to the solar water tank. When the water is full, it will flow out of the overflow pipe. Close the bidirectional ball valve.