Nominal heat output, kW: 9.0Maximal thermal output, kW: - space heating output 13.0- water heating output Efficiency: 76%Dimensions LxBxH, mm: 474 x 400 x 870Combustion chamber LxBxH, mm: 392 х 277 х 370 Boiler capacity, l: Net weight, kg: 68Color: blackLining: Modifications: BEFORE PURCHASING THIS PRODUCT, PLEAS...