EN 778:1998 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 (Incorporates Amendment A1: 2001)
2009EN 778:2009 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
1998EN 778:1998 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 (Incorporates Amendment A1: 2001)