BS EN 297-1994 燃气集中供暖锅炉.装有标称输入热量不超过70kW的常压燃烧器的B11型和B11BS型锅炉

标准号：BS EN 297-1994
中文标准名称：燃气集中供暖锅炉.装有标称输入热量不超过70kW的常压燃烧器的B11型和B11BS型锅炉
英文标准名称：Gas-fired central heating boilers. Type B11 and B11BS boilers fitted with atmospheric burners of nominal heat input not exceeding 70 kW
标准类型：J98
发布日期：1994/10/15 12:00:00
实施日期：1994/10/15 12:00:00
中国标准分类号：J98
国际标准分类号：27.060.30;91.140.10
引用标准：EN 88;EN 125;EN 126;EN 161;EN 278
适用范围：Gas-fired central heating boilers —Type B11 and B11BS boilers fitted with atmospheric burners of nominal heat input not exceeding 70 kW Foreword 1 General 1.1 Field of application 1.2 Normative references 1.3 Definitions 1.3.1 Reference conditions 1.3.2 Combustible gases 1.3.3 Constituent parts of the boiler 1.3.4 Operation of the boiler 1.4 Classification 1.4.1 Classification of gases 1.4.2 Classification of boilers 2 Constructional requirements 2.1 General 2.1.1 Conversion to different gases 2.1.2 Materials and methods of construction 2.1.3 Design 2.1.4 Use and servicing 2.1.5 Connections to the gas and water pipes 2.1.6 Soundness 2.1.7 Supply of combustion air and evacuation of the combustion products 2.1.8 Checking the state of operation 2.1.9 Drainage 2.1.10 Electrical equipment 2.1.11 Operational safety in the event of failure of the auxiliary energy 2.1.12 Protection against frost for boilers intended to be installed in a partially protected place 2.2 Requirements for adjusting, control and safety devices 2.2.1 General 2.2.2 Adjuster and range-rating device 2.2.3 Gas circuit 2.2.4 Gas governor 2.2.5 Ignition devices 2.2.6 Flame supervision devices 2.2.7 Thermostats and water temperature limiting devices 2.2.8 Remote control 2.2.9 Expansion vessel and pressure gauge 2.2.10 Combustion products discharge safety device 2.2.11 Protection against frost for boilers intended to be installed in a partially protected place 2.3 Burners 2.4 Pressure test points 2.5 Chemical composition of the condensate 3 Operational requirements 3.1 General 3.2 Soundness 3.2.1 Soundness of the gas circuit 3.2.2 Soundness of the combustion circuit 3.2.3 Soundness of the water circuit 3.3 Nominal. maximum and minimum heat inputs and nominal output 3.3.1 General 3.3.2 Nominal heat input 3.3.3 Maximum and minimum heat input 3.3.4 Minimum heat input for ignition 3.3.5 Nominal output 3.4 Safety of operation 3.4.1 Limiting temperatures 3.4.2 Ignition—Cross lighting—Flame stability 3.5 Adjusting, control and safety devices 3.5.1 General 3.5.2 Control devices 3.5.3 Automatic valves 3.5.4 Ignition devices 3.5.5 Flame supervision devices 3.5.6 Gas governor 3.5.7 Thermostats and water temperature limiting devices 3.5.8 Combustion products discharge safety device 3.6 Combustion 3.6.1 Carbon monoxide 3.6.2 Other pollutants 3.7 Useful efficiencies 3.7.1 Useful efficiency at the nominal heat input 3.7.2 Useful efficiency at part load 3.8 Criteria for condensation in the flue 3.9 Resistance of the materials to pressure 3.9.1 General 3.9.2 Boilers of pressure class 1 3.9.3 Boilers of pressure class 2 3.9.4 Boilers of pressure class 3 3.10 Hydraulic resistance 3.11 Condensation in the boiler 3.12 —Spare 3.13 Frost protection system for boilers intended to be installed in a partially protected place 3.14 Protection against the ingress of rain 4 Test methods 4.1 General 4.1.1 Characteristics of the reference and limit gases 4.1.2 Requirements for the preparation of test gases 4.1.3 Carrying out the tests 4.1.4 Test pressures 4.1.5 Conduct of the tests 4.1.6 General test conditions 4.1.7 Summary of the test conditions 4.2 Soundness 4.2.1 Soundness of the gas circuit 4.2.2 Soundness of the combustion circuit 4.2.3 Soundness of the water circuit 4.3 Nominal, maximum and minimum heat inputs and nominal output 4.3.1 General 4.3.2 Nominal heat input 4.3.3 Maximum and minimum heat input 4.3.4 Minimum heat input for ignition 4.3.5 Nominal output 4.4 Safety of operation 4.4.1 Limiting temperatures 4.4.2 Ignition —Cross lighting —Flame stability 4.5 Adjusting, control and safety devices 4.5.1 General 4.5.2 Control devices 4.5.3 Automatic valves 4.5.4 Ignition devices 4.5.5 Flame supervision de