The conversion can be carried out by connecting the two water heaters to the main hot water pipe via one valve each (valves 2 and 4 in the figure below). The gas water heater uses gas as fuel and transfers the heat to the circulating heat. by combustion heating. Gas appliance which uses cold water in an exchanger to prepare hot water. The two water heaters can each be connected to the main hot water pipe via a valve.
The three valves. in question correspond to those in the figure below 1, 2, 4 valves (valve 3 is not installed, it does not matter).
Among them: valve 4 is the valve under the water heater;
How to identify valve 1 and valve 2: close 1 and 2, open 3 and 4. Then , open one of 1 and 2 respectively. Pay attention to the water heater when it is turned on. When there is a sound of water flowing through the water heater or the water outlet fromcomes hot, the one open in 1 and 2 is valve 2.