The three doors of the water heater in the house are exactly the same! How to use solar energy and h

Of these three valves, the two closest to each other on the left and at the same height should be the hot and cold water mixing valves, the one on the far right should be the mixing valve solar water supply (or conversion), and the pipeline valve of the gas water heater should be in the kitchen, if the solar gas water heater is used in combination, there should be valves in other positions. You can only know this by checking it yourself. impossible to determine if others are not present and can only look at the three valves. Look it up yourself, turn off the water tap on the gas water heater, turn on the water mixer and if hot water comes out, it's sunshine. of water. Close the right faucet, turn on the water mixer but no hot water comes out, then open the water inlet valve of the gas water heater and start the water heater. Yes, try.