This European Standard specifies the requirements and test methods for the construction, the safety and the rational energy usage of an assembly made up of a boiler body complying with EN 303-11) and a forced draught gas burner complying with EN 676, using combustible gases, hereafter referred to as a \u201cboiler\u201d.<\/p>\n
#This European Standard applies to standard boilers and low-temperature boilers with a nominal heat output not exceeding 1 000 kW and with a water temperature at normal operation not exceeding 105 \u00b0C.$<\/i><\/p>\n
This European Standard does not contain all the necessary requirements for:<\/p>\n
assemblies designed as units;<\/p>\n<\/li>\n
condensing boilers;<\/p>\n<\/li>\n
boilers intended to be installed in the open;<\/p>\n<\/li>\n
boilers permanently fitted with more than one flue outlet;<\/p>\n<\/li>\n
boilers fitted with a draught diverter;<\/p>\n<\/li>\n
boilers intended to be connected to a common flue having mechanical extraction.<\/p>\n<\/li>\n<\/ul>\n
This European Standard does not apply to living-space dedicated boilers (see 3.6).<\/p>\n
If the boiler body has already been tested with a liquid fuel burner, in accordance with EN 303-1, EN 303-2 and EN 304, only the tests described in Annex G need to be performed.<\/p>\n
In the case of a range of boilers, see Annex F.<\/p>\n
Text deleted<\/i><\/p>\n
This European Standard only covers type testing.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 1<\/td>\n | BRITISH STANDARD <\/td>\n<\/tr>\n | ||||||
| 2<\/td>\n | National foreword <\/td>\n<\/tr>\n | ||||||
| 4<\/td>\n | Foreword Foreword to amendment A2 <\/td>\n<\/tr>\n | ||||||
| 5<\/td>\n | Contents <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | 1 Scope 2 Normative references <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | 3 Definitions 3.1 gas rates volumetric rate mass rate heat input nominal heat input 3.3 outputs useful output nominal output useful efficiency nominal voltage <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | boiler to be installed in the living space unit condensate standard boiler low-temperature boiler 4 Assembly requirements 4.1 General principles 4.2 Materials 4.3 Combustion products evacuation ducts <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | 4.4 Condensate discharge for low-temperature boilers 5 Operational requirements 5.1 General 5.2 Heat inputs 5.3 Safety of operation <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 5.4 Useful efficiencies Useful efficiency requirement at maximum nominal heat input Useful efficiency requirement at part load <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 5.5 Required draught and combustion products circuit resistance 5.6 Condensation 5.7 Resistance of the materials to pressure 6 Test methods 6.1 General <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | Adjusting air factor <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 6.2 Heat inputs <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 6.3 Safety of operation <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | (CO2)N 6.4 Useful efficiencies <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | Symbols and quantities needed to calculate the efficiency at part load 6.5 Required draught and combustion products circuit resistance <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | Calculation of the useful part load efficiency <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | 7 Instructions Test rig with direct recirculation (see 6.1.2.3, 6.4.2.2.1, 6.4.2.2.2 and <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | Test rig with heat exchanger <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | Test configuration for determining floor temperature <\/td>\n<\/tr>\n | ||||||
| 26<\/td>\n | Thermocouple configuration for measuring surface temperatures on test floor <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | Sampling probe for flue diameters greater than DN 100 <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | Sampling probe for flue diameters not greater than DN 100 <\/td>\n<\/tr>\n | ||||||
| 29<\/td>\n | Requirements for standard gas boilers <\/td>\n<\/tr>\n | ||||||
| 30<\/td>\n | Requirements for boilers operating with negative pressure Maximum combustion products circuit pressure drop for boilers operating with positive pressure <\/td>\n<\/tr>\n | ||||||
| 31<\/td>\n | Test installation to determine the heat emissions of the boiler when the burner is off <\/td>\n<\/tr>\n | ||||||
| 32<\/td>\n | (informative) Diameters of combustion products evacuation ducts marketed in the various countries (informative) Diameters of combustion products evacuation ducts marketed in the various countries Diameters of combustion products evacuation ducts marketed (informative) Practical method of calibrating the test rig to enable determination of heat loss (informative) Practical method of calibrating the test rig to enable determination of heat loss <\/td>\n<\/tr>\n | ||||||
| 33<\/td>\n | (informative) Determination of the heat losses from the test rig of the indirect method and the contributions of the circulating pump of the test rig (informative) Determination of the heat losses from the test rig of the indirect method and the contributions of the circulating pump of the test rig (informative) Determination of the ignition time at full rate (informative) Determination of the ignition time at full rate <\/td>\n<\/tr>\n | ||||||
| 34<\/td>\n | (normative) Assembly criteria (normative) Assembly criteria <\/td>\n<\/tr>\n | ||||||
| 35<\/td>\n | Minimum dimensions of the combustion chamber (informative) Ranges of boilers (informative) Ranges of boilers <\/td>\n<\/tr>\n | ||||||
| 36<\/td>\n | (normative) Case of a boiler body which has already been tested with a liquid fuel burner in accordance with EN 303-1, EN 303-2 and EN 304 (normative) Case of a boiler body which has already been tested with a liquid fuel burner in accordance with EN 303-1, EN 303-2 and EN 304 <\/td>\n<\/tr>\n | ||||||
| 37<\/td>\n | (informative) Clauses of this European Standard addressing essential requirements or other provisions of EU Directives (informative) Clauses of this European Standard addressing essential requirements or other provisions of EU Directives <\/td>\n<\/tr>\n | ||||||
| 38<\/td>\n | (continued) <\/td>\n<\/tr>\n | ||||||
| 39<\/td>\n | (continued) Table identifying conformity with the relevant clauses of the Efficiency Directive <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Heating boilers – Gas-fired central heating boilers. Assembly comprising a boiler body and a forced draught burner<\/b><\/p>\n |