1, pay attention to the choice of water supply time.
When using solar water heater in winter, it is necessary to determine the water adding time according to the weather conditions. If the outdoor temperature is above zero, consider adding water at night. If the outdoor temperature is below zero, it is best to add water the next morning to prevent the outlet from freezing.
2, vent antifreeze method
If the temperature is too low in winter or the solar water heater is not used for a long time, it is necessary to close the water inlet valve of the water heater and let off the water in the upper and lower pipes of the water heater, so as to avoid the phenomenon of water pipes freezing and cracking due to low temperature and poor water circulation.
3, dripping antifreeze method
For the solar water heater without anti-freezing tracing belt, the traditional drip anti-freezing method can only be adopted. If the weather is cold, you can turn on the hot water tap or faucet, put a basin under it, loosen the hot water valve a little, screw it to a minimum, and keep dripping drop by drop to prevent the water pipe from freezing and cracking. If it's an electric water heater, it's best to drain the water inside.
Daily maintenance of solar water heater
1. When installing a solar water heater, the water pipes may be contaminated with dust or oil smell. When you use it for the first time, you can turn on the faucet to remove impurities.
2. The stored water in the solar water heater should be discharged regularly according to the local water quality, and the discharge time can be selected when the collector is low in the morning.
3. According to the amount of dust falling in the area, the surface of the solar water heater can be cleaned by itself when it rains. Keeping the surface of the water heater clean can obtain higher heat collection efficiency.
When hot water is not used for many days on sunny days, the temperature of hot water is very high. When using solar water heater, please turn on cold water first, then hot water to avoid scalding.
5. There is generally a filter screen device at the outlet end of the faucet, and the scale debris in the water pipe will gather in this net, which should be cleaned regularly to increase the smooth water flow.