Schematic diagram of water pipe connection of solar water heater

1. Schematic diagram of single pipe water supply and drainage installation

The following figure shows the installation method of manual control. If automatic control is adopted, just replace the "water supply valve" with the "solenoid valve", and pay attention to the water inlet and outlet direction of the solenoid valve.

2. Schematic diagram of installation of water supply and drainage double pipes

The following figure shows the installation method of manual control. If automatic control is adopted, just replace the "water supply valve" with the "solenoid valve", and pay attention to the water inlet and outlet direction of the solenoid valve.

Extended data

The solar water heater first sends cold water to the heat storage tank, and then sends heat to the heat preservation tank through the heat collector. The hot water storage tank is connected with indoor cold and hot water pipes, so that the whole system forms a closed loop. The reasonable design and correct connection of solar energy pipes are very important for the solar energy system to achieve the best working condition. The solar energy pipeline must be insulated, and a heat tracing belt needs to be laid on the outer wall of the pipeline in the northern cold area to ensure that users can use solar hot water in cold winter.

Domestic solar water heaters usually work in natural circulation mode and have no external power supply. Vacuum tube solar water heater is in-line structure, and hot water is powered by gravity. Flat solar water heaters are powered by the pressure of tap water (called top water). The solar central heating system adopts pump circulation. Due to the small heat collection area of solar water heaters, considering the heat loss, pipeline circulation is generally not used.

References:

Baidu encyclopedia-solar water heater