If the building does not have lightning protection installations, it is best not to install and use solar water heaters. If it is to be installed, two lightning rods of the same height with a height of about 2 meters or an independent lightning rod with a height of about 3 meters should be installed about 1 meter horizontally from the solar water heater on the roof , and the lightning rod must be installed. the rod body should be directly connected to the ground. When installing and using solar water heaters in buildings with lightning protection installations, you should also pay attention to lightning protection.
To reduce the risk of lightning, the installation position of the solar water heater should be lowered appropriately or the height of the lightning rod should be increased. Under normal circumstances, the solar water heater should be at least 60cm lower than the paratthunder and a safety distance of approximately 1 meter must be maintained. The metal frame of the water heater must be grounded. If the water heater is already in the protection zone of lightning protection installations, it is not appropriate to connect the metal shell of the water heater to other metal bodies on the roof. Additionally, metal pipes entering the room should be grounded and equipotentially connected to the corresponding parts as required. To ensure safety, in the event of lightning, it is best not to use a solar water heater even if it is equipped with a lightning protection device. The power plug should be unplugged and there should be as little contact as possible with water pipes and taps. case.