... 40KW,digital display 2.Heating/hot water 3.EU technology efficiency 90% 4.Exported to Russia,Ukraine,Armenia,Iran,Italy Energy saving ... Gas Water heater and Gas Boiler:Series:Blue Flame ... rated thermal load91%Efficiency at 30% rated thermal load86%Applicable water pressure (MPa)0.04 to 0.8Power supplyAC220/50HzRated ...