17-30 kW.

Modern speakers are equipped with a special protection system in case of emergency. They automatically turn off when the flame is extinction, the absence of water in the heat exchanger, with overheating, gas leak, with a weak chimney thrust. Due to their compactness, such columns are widely used by the population. A big plus of these gas stems is their performance. The volume of hot water supply is about 10-17 l/min and this is at water pressure 0.1- 1.0 atm. and capacities 17-30 kW.