PrecautionsPrecautions1.2. Avoiding irradiation without water after installation, it can't be used immediately, itshould be sheltered.3. When supplying water at the first time, it should be operated in the morning orevening or the condition of short of light; avoid supplying water in strong sunshine,in order to prevent vacuum tubes bombing.4. If the water pressure isn't enough for water supply, please install an pressurizeequipment.5. When the hot water is to be used, don't place the spray head face yourself until thewater temperature is suitable.6. This product can supply the water depend on the fall of the tank and the water exit ,an pressurize equipment is recommended while the water couldn't be suppliednormally due to the low fall.7. Do not supply cold water more than once in a low solar irradiance day.8. The energy is from solar, in the days that lack of solar such as rainy or snowy day,the temperature of the water may can't reach your demand,9. Make sure the evacuated tubes clean, hose off the dust and dirt on the tubes andthe reflector before the winter comes.10. The evacuated tubes resist as low temperature as -70 when tubes is emptied.The tank should remain filled up during continuously cloudy or snowing days in winter,in addition every two days the cold water in the tank should be changed to prevent thewater in the tank from freezing which might damage the tubes.When using the water heater with electric heating, ensure that electric heating andelectric tracing belt are closed.If there isn't electric heating ,it may not be used normally.2