2. Before installing the water mixing valve, the hot and cold water inlet and outlet valves of the water heater must be closed.
3. Use a pipe cleaner to clean the residue in the water pipe.
4. Install the water mixing valve between two water pipes above the water outlet of the water heater.
5. Adjust the temperature control knob of the water mixing valve to the required water temperature, and then open the hot and cold water inlet valve.