Ariston Gas Water Heater, 10 Liter/Minute, Natural Gas, Flueless, White, SPEED-EVO 10NG

Ignition here is automatic off two D-cell batteries, with no wall socket needed. It runs on natural gas at 20 mbar and gives 10 liters a minute at a 25 °C rise from a 17.4 kW burner. Water and gas knobs set the outlet between 30 °C and 65 °C, and a summer and winter selector changes the gas rate. The burner shuts off after 20 minutes of continuous use, and an oxygen depletion sensor plus overheat and dry-heating protection are fitted.