Under normal circumstances, when the water heater is frozen, just apply a hot towel to the outside. During the application process, we need to continuously pour hot water on it or directly buy a heating pipe and put the heating tube. your passive pipe, and it will melt in about half an hour.
Generally speaking, since the pipes of solar water heaters are located outside, they risk freezing if the temperature is low in winter. It is important to master anti-freeze and defrost tips.
1. Check before use in winter: For solar water heaters, preventive measures should be taken before winter arrives. The first is to perform a complete inspection of the solar water heater, and the most important thing is to do it. check the screws at the pipe interface for loose pipes, disconnected pipes, leaks or cracks. If yes, repair them in time?
2. Take insulation measures for solar energy: Pay attention to solar hot water pipes exposed to the exterior and take anti-freeze measures. Cotton and linen fabrics, plastic foam, etc. can be used. packaging and insulation must be installed. Use a water drainage device to drain stored water and prevent frozen water pipes from freezing. If it is PP-R and PVC plastic pipes, you can apply them with hot towels and then rinse them. with lukewarm water to defrost them. Do not cook them directly on fire or scald them with boiling water to avoid cracking the pipes. When the temperature is below zero in winter, it is necessary to turn on the antifreeze device of the heating tape for preheating protection. Especially in very cold northern areas, when the temperature drops below zero, the antifreeze and preheating devicefage is on. on. Closed during the day. If the indoor temperature is below 0°C, pipe connections, valves, sprinklers and other interior parts should also be insulated to prevent frost cracking.
3. Pay attention to the selection of water filling time: When using solar water heaters in winter, the water filling time should be determined according to weather conditions. If the outside temperature is above freezing, you can. remember to add water that night. If the outside temperature is below zero, you can consider adding water that night, it is better to add water the next morning to prevent the water outlet from freezing.
4. Ventilation and 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 supply tap inwater from the water heater. and drain the water in the upper and lower pipes of the water heater to prevent the temperature from being too low. Lack of water circulation causes pipes to freeze and crack.
5. Drip Antifreeze Method: For solar water heaters without antifreeze heating tapes, the only option is to use the traditional drip antifreeze method. If the weather is cold, you can turn on the hot water nozzle or the tap. , and open the hot water nozzle or tap below. Place a basin of water, loosen the hot water tap a little, turn it to minimum and let the water flow drop by drop. This can prevent water pipes from freezing and cracking. . If it is an electric water heater, it is best to drain the water inside.
1. Turn off the power to the water heater and close the water inlet valve of the water heater faucet (ball valve or angle valve)
2. the positionor the "full of hot water" state and open;
3. Use a wrench to unscrew the drain port cap at the bottom of the water heater (water heaters without a drain port need to remove the pressure relief valve on the water inlet pipe), and drain the water inside the water heater with all the dirt at the bottom of the tank draining.