Water is pumped from a storage tank just behind and below the collectors to the lower manifold on the right most collector. To successfully install a solar return pump, several steps are necessary to ensure optimal performance and efficiency. The essential points to consider include: 1. A poorly adjusted pump can lead to: 1. Understand the wiring requirements and safety precautions, 3. Connect the pump to. From small birdbath fountains to high-power irrigation pumps, these solar water pumps cover every size and need without a utility connection. As an Amazon Associate, we earn from qualifying purchases. However, it is not the same as water heating using photovoltaics, although these two terms are often confused.