The instant water heater has a cold water inlet pipe, which passes through the heating element, heats up, and comes out in the hot water outlet pipe. A necessary condition for the initial operation of the instant water heater is that the pressure of the cold water inlet is not too low.
The temperature of the water is regulated by a thermostat, so as not to exceed a maximum value. The temperatures reached by the hot water are pre-set so that someone can use the hot water directly, without the need to mix it with cold water.
The maximum temperature that can be reached for hot water production is 55 °C, while the maximum flow rate of water reaches up to 8 liters per minute. Indicatively, 38-42 °C degrees are the standard for shower use.