Domestic gas-fired forced convection air heaters for space heating not exceeding a net heat input of 70 kW, without a fan to assist transportation of combustion air and/or combustion products (includes amendment A1:2001); German version EN 778:1998 + A1:2001— 114 стр.
Non-domestic gas-fired forced convection air heaters for space heating not exceeding a net heat input of 300 kW, without a fan to assist transportation of combustion air and/or combustion products (includes Amendment A1:2001); German version EN 621:1998 + A1:2001— 111 стр.