Although there are two pipes, the backwater is actually called an overflow pipe and has little to do with its use. Water supply and drainage operations are mainly carried out via the one with a valve. Because it is two-way, it is not advisable to install a check valve. Conforms to the description, the drain function is normal.
However, when using cold water, due to the high pressure of cold water, it will rise to a certain height in the solar pipe through the mixer. In fact, if you are in an area. with heating, the solar pipe comes from the building. If you take it to the ground, you don't have to worry about the pipes freezing. Warm air will prevent the risers from freezing.
If there is no heating or the pipe is outside, this will be inconvenient. You must install a manual faucet (not a check valve) on the hot water channel of the mitiger. After emptying, close. then use cold water. It will not get stuck in the hot water pipe.
Detailed information:
The pipes should be arranged according to the upper and lower pipes . , and the pipes cannot be adjusted horizontally.
Close the water inlet valve, open the water outlet valve, then open the shower faucet, turn it in the direction of hot water and open the water switch water outlet from the safety valve.
But generally, the water level of the shower faucet is lower than the water inlet, and the water cannot be discharged under the action of gravity. Remove the shower head, blow into the hose with your mouth, and. blow the water into the pipe. In the water heater, there is no water in the pipe, only air, so the water is discharged from the water inlet.
It is recommended to remove the safety valve whendraining the water. Drainage relying on the safety valve is too slow. Remember to unplug the power plug at this time.
Baidu Encyclopedia - Solar drain valve