When installing, make sure to turn on the water first, then turn on the electricity Install the product vertically, do not install horizontally or diagonally. It is strictly forbidden to modify the faucet without permission. Install the product vertically; the water inlet and outlet must not be blocked, and the water outlet cannot be installed with water purifiers, washing machines, etc. The water pressure should not be too low - it takes 5 seconds to fill a 500ml mineral water bottle. When the water is below 0, please unplug the power cord. Do not buy if the water pressure is too low Speaking of water pressure Fill a 500ml water bottle in 5 seconds About water temperature 30-60C Shipping after passing the factory water test. About testing After receiving the goods, the machine will have a small amount of water drops. Do not use plugs, adapters, extension cords, Domestic/European regulations/UK regulations and other 220V wiring requirements require 1.5 square metres, When installing, be aware of US standard 2.5 square meter 110V wiring requirements. It is strictly forbidden to install or modify it upside down. Please pass the cold water test first to see if there is water leakage, and then turn on the electric heater after the water is smooth.