27.060.20 - Gas fuel burners
ICS 27.060.20 Details
Gas fuel burners
Gasfeuerungen
Bruleurs a gaz
Plinski gorilniki
General Information
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This document specifies the functional requirements relevant for design, materials, construction, testing, operation and maintenance of gas pressure control stations to ensure their reliability in terms of safety of the station itself and the downstream system and continuity of service.
This document is applicable for gas pressure control stations which are part of gas transmission or distribution systems for hydrogen, and hydrogen rich, and methane rich gases. Additional requirements in the case of gases heavier than air and/or toxic or corrosive gases are not covered by this document.
This document does not apply to gas pressure control stations in operation prior to the publication of this document. However, Annex D of this document can be used as guidance for the evaluation of stations in operation prior to the publication of this document, regarding the change of the type of gas, e.g. repurposing for the use with hydrogen.
The stations covered by this document have a maximum upstream operating pressure, which does not exceed 100 bar. For higher maximum upstream operating pressures, this document can be used as a guideline.
If the inlet pipework of the station is a service line and the maximum upstream operating pressure does not exceed 16 bar and the design flow rate is equal to 2000 kW based on the gross calorific value or less, EN 12279 applies.
This document contains the basic system requirements for gas pressure control stations. Requirements for individual components (valves, regulators, safety devices, pipes, etc.) or installation of the components are contained in the appropriate European Standards.
NOTE For combined control and measuring stations, the additional requirements of EN 1776 can apply.
The requirements in this document do not apply to the design and construction of auxiliary facilities such as sampling, calorimetering, odorization systems and density measuring. These facilities are covered by the appropriate European Standards, where existing, or applicable national standards.
The requirements of this document are based on good gas engineering practice under conditions normally encountered in the gas industry. Requirements for unusual conditions cannot be specifically provided for, nor are all engineering and construction details prescribed.
The objective of this document is to ensure the safe operation of such stations. This does not, however, relieve all concerned of the responsibility for taking the necessary care and applying effective quality and safety management during the design, construction, operation and maintenance.
- Draft49 pagesEnglish languagesale 10% offe-Library read for1 day
EN 13611:2019, Clause 1 is applicable with the following modification and addition:
Modification:
The 1st paragraph of EN 13611:2019, Clause 1 is replaced by:
This document specifies the safety, design, construction, and performance requirements and testing for multifunctional controls for burners and appliances burning one or more gaseous fuels, hereafter referred to as ‘MFC’. This document is applicable to MFCs with declared maximum inlet pressures up to and including 50 kPa and nominal connection sizes up to and including DN 150.
Addition:
This document is applicable to MFCs consisting of two or more functions, at least one of which is a mechanical control, as specified in the relevant control standard (see Figure 1).
This document does not apply to MFCs consisting only of electronics (an example is a combination of functions according to EN 298:2022 and EN 1643:2022).
The 4th paragraph of EN 13611:2019, Clause 1 is removed.
- Standard30 pagesEnglish languagesale 10% offe-Library read for1 day
EN 13611:2019, Clause 1 applies with the following modification and addition:
Modification:
The 1st paragraph of EN 13611:2019, Clause 1 is replaced by:
This document specifies the safety, design, construction, and performance requirements and testing for automatic shut-off valves for burners and appliances burning one or more gaseous fuels, hereafter referred to as “valves”.
This document is applicable to valves with declared maximum inlet pressures up to and including 500 kPa and of nominal connection sizes up to and including DN 250.
Addition:
This document is applicable to:
- electrically actuated valves;
- valves actuated by fluids where the control valves for these fluids are actuated electrically, but not to any external electrical devices for switching the control signal or actuating energy;
- valves where the flow rate is controlled by external electrical signals, either in discrete steps or proportional to the applied signal;
- valves fitted with closed position indicator switches.
An assessment method for valve designs is given by this document.
The 4th paragraph of EN 13611:2019, Clause 1 is removed.
- Standard66 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies safety, constructional, performance and testing requirements of normally open automatic vent valves, hereafter referred to as “valves”. This document applies to valves with a declared maximum operating pressure up to and including 500 kPa of nominal connection sizes up to and including DN 100 (4”), for use in gas control train of gas burners or in appliances using gaseous fuels such as natural, manufactured or liquefied petroleum gas (LPG). It is not applicable to corrosive and waste gases. This document applies to: — electrically operated valves and to valves actuated by fluids where the control valves for these fluids are actuated electrically, but not to any external devices for switching the control signal or actuating energy; — valves fitted with open position indicator switches. This document covers type testing only.
- Standard26 pagesEnglish languagesale 15% off
EN 13611:2019, Clause 1 applies with the following modification and addition:
Modification:
The 1st paragraph of EN 13611:2019, Clause 1 is replaced by:
This document specifies the safety, design, construction, and performance requirements and testing for
thermoelectric flame supervision devices, energized by a thermocouple intended for use with burners
and appliances burning one or more gaseous fuels, hereafter referred to as “controls”.
This document is applicable to controls with declared maximum inlet pressures up to and including
500 kPa and of nominal connection sizes up to and including DN 50.
Addition:
This document is not applicable to:
— the thermocouple;
— controls which use auxiliary energy (e.g. electrical energy supplied externally).
The 4th paragraph of EN 13611:2019, Clause 1 is removed.
- Standard40 pagesEnglish languagesale 10% offe-Library read for1 day
EN 13611:2019, Clause 1 applies with the following modification and addition:
Modification:
The 1st paragraph of EN 13611:2019, Clause 1 is replaced by:
This document specifies the safety, design, construction, and performance requirements and testing for
pneumatic pressure regulators and safety devices for burners and appliances burning one or more
gaseous fuels, hereafter referred to as “pressure regulators”.
This document is applicable to pressure regulators with declared maximum inlet pressures above 50 kPa
up to and including 500 kPa and of nominal connection sizes up to and including DN 250.
Addition:
This document is applicable to:
— pressure regulators incorporating safety devices;
— pressure regulators and safety devices which use auxiliary energy;
— stand-alone pressure regulators or pressure regulators equipped with a control device for maximum
or minimum gas pressure.
This document is not applicable to:
— pressure regulators connected directly to a gas distribution network or to a container that maintains
a standard distribution pressure;
— pressure regulators intended for gas appliances to be installed in the open air and exposed to the
environment.
The 4th paragraph of EN 13611:2019, Clause 1 is removed.
- Standard63 pagesEnglish languagesale 10% offe-Library read for1 day
EN 13611:2019, Clause 1 applies with the following modification and addition:
Modification:
The 1st paragraph of EN 13611:2019, Clause 1 is replaced by:
This document specifies the safety, design, construction, and performance requirements and testing for
automatic vent valves for burners and appliances burning one or more gaseous fuels, hereafter referred
to as “valves”.
This document is applicable to valves with declared maximum inlet pressures up to and including
500 kPa and of nominal connection sizes up to and including DN 100.
Addition:
This document is applicable to:
— electrically actuated valves;
— valves actuated by fluids where the control valves for these fluids are actuated electrically, but not to
any external electrical devices for switching the control signal or actuating energy;
— valves fitted with open position indicator switches.
The 4th paragraph of EN 13611:2019, Clause 1 is removed.
- Standard43 pagesEnglish languagesale 10% offe-Library read for1 day
EN 13611:2019, Clause 1 applies with the following modification and addition:
Modification:
The 1st paragraph of EN 13611:2019, Clause 1 is replaced by:
This document specifies the safety, design, construction, and performance requirements and testing for
electronic pressure and/or flow rate regulators for burners and appliances burning one or more gaseous
fuels, hereafter referred to as “regulators”.
This document is applicable to regulators with declared maximum inlet pressures up to and including
500 kPa and of nominal connection sizes up to and including DN 250.
Addition:
This document is applicable to:
— regulators which use auxiliary energy;
— regulators, which function by controlling a gas outlet pressure or a gas flow rate;
— regulators with a modular structure specified as a unit;
— regulators intended for gas appliances to be installed indoor or in the open air and exposed to the
environment.
This document is not applicable to:
— regulators connected directly to a gas distribution network or to a container that maintains a
standard distribution pressure.
The 4th paragraph of EN 13611:2019, Clause 1 is removed.
- Standard50 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies requirements and guidance for manufacturers of ammonia-fired boilers regarding functional tests performed at the time of design and on-site acceptance tests, in order to meet the required environmental performance. This document stipulates the test methods, the measurement items, the evaluation methods and the test reports for each test. This document is applicable to: a) land boilers used for power generation with an electrical output of 100 MWe or more; b) equipment that uses NH3 of any mixing ratio as fuel; c) boilers with burners for combustion of fuel. This document does not apply to heat recovery steam generators for gas turbines, fluidized bed boiler, stokers, black liquor recovery boiler and process heat transfer equipment (used in petroleum refining).
- Technical specification20 pagesEnglish languagesale 15% off
This document specifies safety, constructional and performance requirements and testing of automatic, semi-automatic shut-off valves, and general purpose valves for gas burners, gas appliances and appliances of similar use excluding use in fuel gas infrastructures (transportation and distribution systems). This document applies to controls for use at maximum operating pressures above 500 kPa up to and including 6 300 kPa with sizes up to DN 250 for use on burners or in appliances using fuel gases, such as natural gas, manufactured gas or liquefied petroleum gas (LPG). This document applies to: — valves being mounted in gas installations; — valves directly or indirectly actuated, electrically or by mechanical means; — valves actuated by hydraulic or pneumatic means, including the pilot valves for these fluids if actuated electrically and including release valves, but not to any external electrical devices for switching the actuating energy; — valves where the flow rate is controlled by external electrical signals, either in discrete steps or proportional to the applied signal and valves fitted with closed position indicator switches; — valves to be used in appliances, but not in gas transfer systems outside appliances. This document covers type testing only. This document does not apply to valves covered under the scope of ISO 23551-1 or the ISO 23555 series.
- Standard39 pagesEnglish languagesale 15% off
This document specifies safety, constructional and performance requirements and testing of automatic, semi-automatic shut-off valves and general purpose valves for gas burners, gas appliances and appliances of similar use, hereinafter referred to as valves. This document applies to normally closed valves and general purpose valves mounted upstream to gas burners and gas appliances with declared maximum operating pressures up to and including 500 kPa, for use on burners or in appliances using fuel gases such as natural gas, manufactured gas or liquefied petroleum gas (LPG). It is not applicable to corrosive and waste gases. This document applies to: — valves directly or indirectly actuated, electrically or by mechanical means; — valves actuated by hydraulic or pneumatic means; — valves where the flow rate is controlled by external electrical signals, either in discrete steps or proportional to the applied signal; and — valves fitted with closed position indicator switches. This document covers type testing only.
- Standard35 pagesEnglish languagesale 15% off
EN 13611:2019, Clause 1 applies with the following modification and addition:
Modification:
The 1st paragraph of EN 13611:2019, Clause 1 is replaced by:
This document specifies the safety, design, construction, and performance requirements and testing for
thermoelectric flame supervision devices, energized by a thermocouple intended for use with burners
and appliances burning one or more gaseous fuels, hereafter referred to as “controls”.
This document is applicable to controls with declared maximum inlet pressures up to and including
500 kPa and of nominal connection sizes up to and including DN 50.
Addition:
This document is not applicable to:
— the thermocouple;
— controls which use auxiliary energy (e.g. electrical energy supplied externally).
The 4th paragraph of EN 13611:2019, Clause 1 is removed.
- Standard40 pagesEnglish languagesale 10% offe-Library read for1 day
This document covers the measurements of the emissions of carbon monoxide (CO) and nitrogen oxides (NOX) produced by the combustion of gaseous fuel in domestic appliances. It is also possible to adapt it to liquid fuel appliances.
It explains how to correct the measured values obtained at the testing conditions of temperature, humidity and gas used into the reference conditions, as well as their conversion to different aeration factor expressed as %O2 in the dry products of combustion.
The document also contains information on the types of sampling probes, mainly their form and their dimensions, which depend on the type of flue gas system.
It also gives detailed information on the sampling of the flue gas to be analysed, the transport / transfer lines and their components, and the materials recommended for their construction.
This document contains hints on the calculation of the uncertainties and the parameters to be considered in the whole analysis chain from the sampling probe to the analysers including the calibration gases.
The calculation of the uncertainties of the measurements of NOX and CO is not covered by this document.
- Technical report41 pagesEnglish languagesale 10% offe-Library read for1 day
EN 13611:2019, Clause 1 applies with the following modification and addition:
Modification:
The 1st paragraph of EN 13611:2019, Clause 1 is replaced by:
This document specifies the safety, design, construction, and performance requirements and testing for
mechanical thermostats intended for use with gas appliances and similar use, hereafter referred to as
“thermostats”.
This document is applicable to thermostats with declared maximum inlet pressures up to and including
50 kPa and of nominal connection sizes up to and including DN 50 for use with one or more fuel gases.
Addition:
This document is applicable to thermostats controlling the gas flow directly or indirectly through an
integral gas valve. This document applies to thermostats used with gas appliances which are not installed
in the open air.
Thermostats dealt with in this document are intended for control functions.
This document is not applicable to:
a) controls which use auxiliary energy (e.g. electrical energy supplied externally);
b) an assessment of the control regarding Performance Level (PL) and Safety Integrity Level (SIL).
The 4th paragraph of EN 13611:2019, Clause 1 is removed.
- Standard43 pagesEnglish languagesale 10% offe-Library read for1 day
EN 13611:2019, Clause 1 applies with the following modification and addition:
Modification:
The 1st paragraph of EN 13611:2019, Clause 1 is replaced by:
This document specifies the safety, design, construction, and performance requirements and testing for gas filters for burners and appliances burning one or more gaseous fuels.
This document is applicable to gas filters with declared maximum inlet pressures up to and including 600 kPa and of nominal connection sizes up to and including DN 250.
Addition:
This document is not applicable to:
- gas filters that are connected directly to mains pipe-work or to a container that maintains a standard distribution pressure.
The 4th paragraph of EN 13611:2019, Clause 1 is removed.
- Standard36 pagesEnglish languagesale 10% offe-Library read for1 day
EN 13611:2019, Clause 1 applies with the following modification and addition:
Modification:
The 1st paragraph of EN 13611:2019, Clause 1 is replaced by:
This document specifies the safety, design, construction, and performance requirements and testing for
pressure regulators and pneumatic gas/air ratio pressure regulators (zero pressure regulators are
included as a special type of pneumatic gas/air ratio pressure regulators) for burners and appliances
burning one or more gaseous fuels, hereafter referred to as “pressure regulators”.
This document is applicable to pressure regulators with declared maximum inlet pressures up to and
including 50 kPa and of nominal connection sizes up to and including DN 250.
Addition:
This document is applicable to:
— pressure regulators which use auxiliary energy;
— pneumatic gas/air ratio pressure regulators, which function by controlling a gas outlet pressure in
response to an air signal pressure, air signal differential pressure, and/or to a furnace pressure signal
(zero pressure regulators are included as a special type of pneumatic gas/air ratio pressure
regulators);
— pneumatic gas/air ratio pressure regulators, which change an air outlet pressure in response to a gas
signal pressure or a gas signal differential pressure.
This document is not applicable to:
— pressure regulators connected directly to a gas distribution network or to a container that maintains
a standard distribution pressure;
— pressure regulators intended for gas appliances to be installed in the open air and exposed to the
environment;
— mechanically linked gas/air ratio controls;
— electronic gas/air ratio controls (EN 12067-2:2022).
The 4th paragraph of EN 13611:2019, Clause 1 is removed.
- Standard60 pagesEnglish languagesale 10% offe-Library read for1 day
EN 13611:2019, Clause 1 applies with the following modification:
Modification:
The 1st paragraph of EN 13611:2019, Clause 1 is replaced by:
This document specifies the safety, design, construction, and performance requirements and testing of pressure sensing devices for burners and appliances burning one or more gaseous fuels.
This document is applicable to pressure sensing devices for gaseous fuels, air, or combustion products with declared maximum inlet pressures up to and including 500 kPa.
It applies to all types of pressure sensing devices, including electronic, differential and inferential types.
It also specifies requirements for pressure sensing devices which are intended to be applied to steam boilers and as such need to meet increased reliability requirements.
EN 13611:2019 Clause 1, 4th paragraph is not applicable.
- Standard60 pagesEnglish languagesale 10% offe-Library read for1 day
EN 13611:2019, Clause 1 applies with the following modification and addition:
Modification:
The 1st paragraph of EN 13611:2019, Clause 1 is replaced by:
This document specifies the safety, design, construction, and performance requirements and testing for manually operated taps and presetting taps for burners and appliances burning one or more gaseous fuels, hereafter referred to as "taps".
This document is applicable to taps with declared maximum inlet pressures up to and including 50 kPa and of nominal connection sizes up to and including DN 50 for use with one or more fuel gases.
Addition:
This document is not applicable to:
a) manual operated shut-off valves conforming to EN 331:2015;
b) controls which use auxiliary energy (e.g. electrical energy supplied externally).
The 4th paragraph of EN 13611:2019, Clause 1 is removed.
- Standard42 pagesEnglish languagesale 10% offe-Library read for1 day
EN 13611:2019, Clause 1 applies with the following modification and addition:
Modification:
The 1st paragraph of EN 13611:2019, Clause 1 is replaced by:
This document specifies the safety, design, construction, and performance requirements and testing for gas filters for burners and appliances burning one or more gaseous fuels.
This document is applicable to gas filters with declared maximum inlet pressures up to and including 600 kPa and of nominal connection sizes up to and including DN 250.
Addition:
This document is not applicable to:
- gas filters that are connected directly to mains pipe-work or to a container that maintains a standard distribution pressure.
The 4th paragraph of EN 13611:2019, Clause 1 is removed.
- Standard36 pagesEnglish languagesale 10% offe-Library read for1 day
EN 13611:2019, Clause 1 applies with the following modification and addition:
Modification:
The 1st paragraph of EN 13611:2019, Clause 1 is replaced by:
This document specifies the safety, design, construction, and performance requirements and testing for
mechanical thermostats intended for use with gas appliances and similar use, hereafter referred to as
“thermostats”.
This document is applicable to thermostats with declared maximum inlet pressures up to and including
50 kPa and of nominal connection sizes up to and including DN 50 for use with one or more fuel gases.
Addition:
This document is applicable to thermostats controlling the gas flow directly or indirectly through an
integral gas valve. This document applies to thermostats used with gas appliances which are not installed
in the open air.
Thermostats dealt with in this document are intended for control functions.
This document is not applicable to:
a) controls which use auxiliary energy (e.g. electrical energy supplied externally);
b) an assessment of the control regarding Performance Level (PL) and Safety Integrity Level (SIL).
The 4th paragraph of EN 13611:2019, Clause 1 is removed.
- Standard43 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies safety, constructional and performance requirements for manual gas valves intended for use with gas burners and gas-burning appliances, hereafter referred to as "valves", unless otherwise specified. This document applies to the following types of manual gas valves: — manual gas shut-off valves; — gas burner valves; — appliance connector valves; — delta C valves. This document applies to valves for gas burners and gas-burning appliances of nominal connection size up to and including DN 100 that can be used and tested independently of these appliances using fuel gases, as natural gas, manufactured gas or liquefied petroleum gas (LPG) at inlet pressures up to and including 500 kPa. This document is not applicable to corrosive and waste gases. This document covers type testing only.
- Standard33 pagesEnglish languagesale 15% off
This document specifies safety, construction, performance and testing requirements for multifunctional controls with integral overpressure protection safety function (OPSF) intended for use with portable gas appliances. This document is applicable to: — multifunctional controls which consist of a pressure-limiting device and at least one or more controls, including but not limited to a manual gas valve, a pressure regulator and a thermoelectric flame supervision device; and — multifunctional controls with declared maximum operating pressures in normal use, up to and including 500 kPa for use with a butane gas cartridge specified by ISO/TS 21985. This document does not apply to multifunctional controls with OPSF having thread connections for mounting butane gas cartridges. This document covers type testing only.
- Standard27 pagesEnglish languagesale 15% off
This document specifies safety, construction, performance and testing requirements of multifunctional controls (MFC) intended for use with gas burners, gas appliances and appliances of similar use. This document applies to an MFC with declared maximum inlet pressures up to and including 50 kPa (500 mbar) of nominal connection sizes up to and including DN 150 for use on burners or in appliances using gases such as natural gas, manufactured gas or liquefied petroleum gas (LPG). It is not applicable to corrosive and waste gases. An MFC consists of two or more functions, at least one of which is a mechanical control, as specified in the relevant control standards. This document is also applicable to construction and performance requirements for components of burner ignition systems as specified in Annex K. The requirements and test methods in Annex K include optional type testing and evaluation of these components. This document is applicable to: — water-operated gas valves (see Annex I); — overheating safety devices (OSDs) (see Annex J); and — optional requirements for components of burner control systems (see Annex K).
- Standard31 pagesEnglish languagesale 15% off
This European Standard specifies the terminology, the general requirements for the construction and operation of forced draught gas burners and also the provision of control and safety devices, and the test procedure for these burners.
This European Standard is applicable to:
- automatic gas burners with a combustion air fan (hereinafter called "burners") and gas line components, intended for use in appliances of different types, and that are operated with gaseous fuels;
- pre mixed burners and nozzle mixed burners;
- single burners with a single combustion chamber;
- single fuel and dual fuel burners when operating only on gas;
- the gas function of dual-fuel burners designed to operate simultaneously on gaseous and liquid fuels, which, for the latter, the requirements of EN 267 also apply.
This European Standard deals with all significant machine hazards, hazardous situations and events relevant to burners, when they are used as intended and under conditions of misuse which are reasonably foreseeable, see Annex J.
This European Standard specifies the requirements to ensure the safety during commissioning, start-up, operation, shut-down and maintenance.
This European Standard does not apply to burners specifically designed for use in industrial processes carried out on industrial premises.
This European Standard deals also with the additional requirements for the burners in the scope with pressurised parts and /or firing pressurised bodies, see Annex K.
This European Standard deals also with forced draught burners intended to be used with biogenous gaseous fuels, mixtures with line-conveyed gas and special gaseous fuels.
This European Standard deals also with burners and their equipment to increase the total appliance efficiency, see Annex M.
- Standard147 pagesEnglish languagesale 10% offe-Library read for1 day
EN 13611:2019, Clause 1 is replaced by the following:
This document specifies the safety, design, construction and performance requirements, and testing for automatic burner control systems, programming units, flame detector devices and High Temperature Operation (HTO) detectors, intended for use with gas and oil burners and gas and oil burning appliances, with or without fans and similar use.
This document is applicable to automatic burner control systems that include additional functions.
This document is not applicable to automatic burner control systems utilizing thermo-electric flame supervision devices.
NOTE Standards for burners, appliances or processes which use automatic burner control systems, programming units, flame detectors or HTO detectors can override the requirements of this document.
- Standard69 pagesEnglish languagesale 10% offe-Library read for1 day
EN 13611:2019, Clause 1 is replaced by the following:
This document specifies the safety, design, construction and performance requirements, and testing for electronic fuel/air ratio control systems (ERC), electronic fuel/air ratio supervision systems (ERS) and electronic fuel/air ratio trim systems (ERT) intended for use with burners and appliances burning gaseous or liquid fuels. It also describes the procedures for evaluating these requirements and specifies information necessary for installation and use.
This document is applicable to:
- closed loop fuel/air ratio control systems, see 3.101;
- fuel/air ratio supervision systems, see 3.102;
- closed loop fuel/air ratio trim systems, see 3.103;
and does not differentiate into classification by heat input.
NOTE The documents for burners, appliances or processes which use ERC, ERS or ERT can override the requirements of this document.
- Standard70 pagesEnglish languagesale 10% offe-Library read for1 day
This European Standard specifies the terminology, the general requirements for the construction and operation of forced draught gas burners and also the provision of control and safety devices, and the test procedure for these burners.
This European Standard is applicable to:
- automatic gas burners with a combustion air fan (hereinafter called "burners") and gas line components, intended for use in appliances of different types, and that are operated with gaseous fuels;
- pre mixed burners and nozzle mixed burners;
- single burners with a single combustion chamber;
- single fuel and dual fuel burners when operating only on gas;
- the gas function of dual-fuel burners designed to operate simultaneously on gaseous and liquid fuels, which, for the latter, the requirements of EN 267 also apply.
This European Standard deals with all significant machine hazards, hazardous situations and events relevant to burners, when they are used as intended and under conditions of misuse which are reasonably foreseeable, see Annex J.
This European Standard specifies the requirements to ensure the safety during commissioning, start-up, operation, shut-down and maintenance.
This European Standard does not apply to burners specifically designed for use in industrial processes carried out on industrial premises.
This European Standard deals also with the additional requirements for the burners in the scope with pressurised parts and /or firing pressurised bodies, see Annex K.
This European Standard deals also with forced draught burners intended to be used with biogenous gaseous fuels, mixtures with line-conveyed gas and special gaseous fuels.
This European Standard deals also with burners and their equipment to increase the total appliance efficiency, see Annex M.
- Corrigendum2 pagesEnglish languagesale 10% offe-Library read for1 day
EN 13611:2019, Clause 1 is replaced by the following:
This document specifies the safety, design, construction and performance requirements, and testing for electronic fuel/air ratio control systems (ERC), electronic fuel/air ratio supervision systems (ERS) and electronic fuel/air ratio trim systems (ERT) intended for use with burners and appliances burning gaseous or liquid fuels. It also describes the procedures for evaluating these requirements and specifies information necessary for installation and use.
This document is applicable to:
- closed loop fuel/air ratio control systems, see 3.101;
- fuel/air ratio supervision systems, see 3.102;
- closed loop fuel/air ratio trim systems, see 3.103;
and does not differentiate into classification by heat input.
NOTE The documents for burners, appliances or processes which use ERC, ERS or ERT can override the requirements of this document.
- Standard70 pagesEnglish languagesale 10% offe-Library read for1 day
EN 13611:2019, Clause 1 applies with the following modification and addition:
Modification:
The 1st paragraph of EN 13611:2019, Clause 1 is replaced by:
This document specifies the safety, design, construction, and performance requirements and testing for automatic shut-off valves for burners and appliances burning one or more gaseous fuels, hereafter referred to as “valves”.
This document is applicable to valves with declared maximum inlet pressures of more than 500 kPa and up to and including 6 300 kPa and of nominal connection sizes up to and including DN 250.
Addition:
This document is applicable to:
- electrically actuated valves;
- valves actuated by fluids including the pilot valves for these fluids if actuated electrically and including release valves, but not to any external electrical devices for switching the actuating energy;
- valves where the flow rate is controlled by external electrical signals proportional to the applied signal;
- valves fitted with closed position indicator switches.
This document is not applicable to valves specifically designed for use in transmission and distribution networks.
The 4th paragraph of EN 13611:2019, Clause 1 is removed.
- Standard46 pagesEnglish languagesale 10% offe-Library read for1 day
This European Standard specifies the terminology, the general requirements for the construction and operation of forced draught gas burners and also the provision of control and safety devices, and the test procedure for these burners.
This European Standard is applicable to:
- automatic gas burners with a combustion air fan (hereinafter called "burners") and gas line components, intended for use in appliances of different types, and that are operated with gaseous fuels;
- pre mixed burners and nozzle mixed burners;
- single burners with a single combustion chamber;
- single fuel and dual fuel burners when operating only on gas;
- the gas function of dual-fuel burners designed to operate simultaneously on gaseous and liquid fuels, which, for the latter, the requirements of EN 267 also apply.
This European Standard deals with all significant machine hazards, hazardous situations and events relevant to burners, when they are used as intended and under conditions of misuse which are reasonably foreseeable, see Annex J.
This European Standard specifies the requirements to ensure the safety during commissioning, start-up, operation, shut-down and maintenance.
This European Standard does not apply to burners specifically designed for use in industrial processes carried out on industrial premises.
This European Standard deals also with the additional requirements for the burners in the scope with pressurised parts and /or firing pressurised bodies, see Annex K.
This European Standard deals also with forced draught burners intended to be used with biogenous gaseous fuels, mixtures with line-conveyed gas and special gaseous fuels.
This European Standard deals also with burners and their equipment to increase the total appliance efficiency, see Annex M.
- Corrigendum2 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies the safety, design, construction, performance requirements and testing of Temperature Control Functions (TCF) and Combustion Product Discharge Safety Devices (TTB) for gas and liquid fuel burners and appliances burning one or more gaseous or liquid fuels, hereafter referred to as ‘TCF’ or ‘TTB’.
It also describes the test procedures for checking compliance with these requirements.
This document is applicable to AC and DC supplied TCF and TTB (for TCF and TTB supplied by stand-alone battery system, battery systems for mobile applications or systems which are intended to be connected to DC supply networks, see Annex I).
This document is applicable to electronically based TTB and TCF only.
For both TTB and TCF, the requirements in this document are applicable to the combination of sensing element and control.
- Standard32 pagesEnglish languagesale 10% offe-Library read for1 day
2021-02-23 and 2021-08- TC origine - corrects crosses in Table E.1, 2nd and 3rd columns, row "Transformers:" and Formula (J.9)
- Corrigendum7 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies safety, construction, performance and testing requirements for mechanical gas thermostat intended for use with gas burners and gas burning appliances hereafter referred to as “thermostats”. This document applies to mechanical gas thermostats of nominal connection sizes up to and including DN 50 with declared maximum inlet pressures up to and including 50 kPa, for use with natural gas, manufactured gas or liquefied petroleum gas (LPG). It is not applicable to corrosive and waste gases. This document applies to mechanical thermostats: — controlling the gas flow directly or indirectly through an integral gas valve, and which do not require external electrical energy for their operation; — used on gas appliances where the thermostat is not directly exposed to the outdoor environment; and — which are intended for operating control functions. This document covers type testing only.
- Standard27 pagesEnglish languagesale 15% off
This document specifies safety, constructional, performance, testing and documentation requirements for gas pressure regulators for use in gas transmission and distribution installations (hereafter referred to as regulators). This document is applicable to regulators with operating pressures greater than 500 kPa and up to and including 10 MPa (100 bar) and nominal diameters up to DN 400 for use with fuel gases as natural gas, manufactured gas, biomethane or liquefied petroleum gas (LPG). This document is applicable to: — test methods which are intended for product type test, routine tests and product surveillance tests; — regulators which use the pipeline gas as a source of control energy unassisted by any external power source; — regulators integrating on the same body a second regulator, used as monitor, complying with the requirements in this document; — regulators integrating a safety shut off device (SSD) according to ISO 23555-3; — regulators incorporating a creep (venting) relief device and/or a vent limiter complying with the requirements in this document. This document does not apply to: — regulators upstream from/on/in domestic gas‑consuming appliances which are installed downstream of domestic gas meters; — regulators designed to be incorporated into pressure control systems used in service lines (pipework from the main pipework in a gas infrastructure to the point of delivery of the gas) with declared volumetric flow rate ≤ 200 m3/h at normal conditions and declared inlet pressure ≤ 500 kPa (5 bar); — industrial process control valves, such as IEC 60534 (all parts); — regulators used in aggressive/sour gas environments (gas environments containing water and H2S are considered sour) or severely corrosive conditions; — regulators in service conditions with renewables (e.g. H2NG with hydrogen more than 10 %) and/or waste gases (e.g. biogas etc.), if additional information is not provided (e. g. contaminant, liquid, etc.).
- Standard58 pagesEnglish languagesale 15% off
This document specifies generic safety, constructional, performance, testing and documentation requirements for high pressure controls for use in gas transmission, distribution and installations (hereafter referred to as controls). This document is applicable to controls with operating pressures greater than 500 kPa (5 bar) and up to and including 10 MPa (100 bar) and nominal size up to DN 400 for use with fuel gases as natural gas, manufactured gas, biomethane or liquefied petroleum gas (LPG) in commercial, industrial installations, including fuel gas infrastructures. The test methods given in this document are intended for product type test, routine tests and batch surveillance tests. This document is not applicable to: — controls upstream from/on/in domestic gas-consuming appliances which are installed downstream of domestic gas meters; — controls designed with declared maximum capacity ≤200 m3/h (normal conditions) and declared maximum inlet pressure ≤500 kPa (5 bar), to be incorporated into pressure control systems used in service lines (pipework from the main pipework in a gas infrastructure to the point of delivery of the gas); — industrial process control valves, such as IEC 60534; — controls used in aggressive/sour gas environments (gas environments containing water and H2S are considered sour) or severely corrosive conditions; — controls in service conditions with renewables (e.g. H2NG with hydrogen more than 10 %) and/or waste gases (e.g. biogas, etc.), if additional information is not provided (e.g. contaminant, liquid, etc.).
- Standard70 pagesEnglish languagesale 15% off
This document specifies safety, constructional, and performance and testing requirements for thermoelectric flame supervision controls, energized by a thermocouple, intended for use with gas burners and gas-burning appliances, hereafter referred to as “controls”. This document applies to thermoelectric flame supervision controls for gas burners and gas-burning appliances of nominal connection size up to, and including DN 50, that can be used and tested independently of these appliances. These thermoelectric flame supervision controls are suitable for fuel gases, such as natural gas, manufactured gas or liquefied petroleum gas (LPG) at inlet pressures up to and including 50 kPa. It is not applicable to corrosive and waste gases. This document covers type testing only. This document is not applicable to: a) the thermocouple; and b) controls which use auxiliary energy (e.g. electrical energy supplied externally).
- Standard19 pagesEnglish languagesale 15% off
This document specifies the test gases, test pressures and categories of appliances relative to the use of gaseous fuels of the first, second and third families. It serves as a reference document in the specific standards for appliances.
The document makes recommendations for the use of the gases and pressures to be applied for the tests of appliances burning gaseous fuels.
NOTE Procedures for tests are given in the corresponding appliance standards. The test gases and the test pressures specified in this standard are in principle intended to be used with all types of appliances.
However, the use of some test gases and test pressures may not be appropriate in the following cases:
- appliances with nominal heat input greater than 300 kW;
- appliances constructed on site;
- appliances in which the final design is influenced by the user;
- appliances constructed for use with high supply pressures (notably direct use of the saturated vapour pressure).
In these cases, the specific appliance standards may specify other test conditions in order to establish compliance with their requirements.
- Standard57 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies the test gases, test pressures and categories of appliances relative to the use of gaseous fuels of the first, second and third families. It serves as a reference document in the specific standards for appliances.
The document makes recommendations for the use of the gases and pressures to be applied for the tests of appliances burning gaseous fuels.
NOTE Procedures for tests are given in the corresponding appliance standards. The test gases and the test pressures specified in this standard are in principle intended to be used with all types of appliances.
However, the use of some test gases and test pressures may not be appropriate in the following cases:
- appliances with nominal heat input greater than 300 kW;
- appliances constructed on site;
- appliances in which the final design is influenced by the user;
- appliances constructed for use with high supply pressures (notably direct use of the saturated vapour pressure).
In these cases, the specific appliance standards may specify other test conditions in order to establish compliance with their requirements.
- Standard57 pagesEnglish languagesale 10% offe-Library read for1 day
This European Standard specifies the terminology, the general requirements for the construction and operation of forced draught gas burners and also the provision of control and safety devices, and the test procedure for these burners.
This European Standard is applicable to:
- automatic gas burners with a combustion air fan (hereinafter called "burners") and gas line components, intended for use in appliances of different types, and that are operated with gaseous fuels;
- pre mixed burners and nozzle mixed burners;
- single burners with a single combustion chamber;
- single fuel and dual fuel burners when operating only on gas;
- the gas function of dual-fuel burners designed to operate simultaneously on gaseous and liquid fuels, which, for the latter, the requirements of EN 267 also apply.
This European Standard deals with all significant machine hazards, hazardous situations and events relevant to burners, when they are used as intended and under conditions of misuse which are reasonably foreseeable, see Annex J.
This European Standard specifies the requirements to ensure the safety during commissioning, start-up, operation, shut-down and maintenance.
This European Standard does not apply to burners specifically designed for use in industrial processes carried out on industrial premises.
This European Standard deals also with the additional requirements for the burners in the scope with pressurised parts and /or firing pressurised bodies, see Annex K.
This European Standard deals also with forced draught burners intended to be used with biogenous gaseous fuels, mixtures with line-conveyed gas and special gaseous fuels.
This European Standard deals also with burners and their equipment to increase the total appliance efficiency, see Annex M.
- Standard147 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies the construction and performance characteristics related to safety and the rational use of energy of portable appliances burning liquefied petroleum gases at the vapour pressure within the gas cartridge or gas cylinder, excepting those where the gas cartridge is inserted horizontally in the chassis.
NOTE These appliances are referred to in the body of the text as "appliances".
This document applies to various types of portable appliances burning liquefied petroleum gases at vapour pressure and designed to be used with cartridges as complying with EN 417 or gas cylinders.
This document covers appliances for outdoor or in well ventilated areas uses only.
For example the following types of appliances are covered:
a) cooking appliances (stoves, grills, barbecues...);
This document does not cover barbecues that can be used indoors;
b) lighting appliances;
c) heating appliances;
This document only applies to appliances with a maximum heat input of up to 3 kW (Hs) for outdoor use only;
d) blowtorches;
This document only applies to blowtorches without a flexible hose;
e) laboratory burners.
The requirements apply to these appliances or their functional sections whether or not the latter are independent or incorporated into an assembly.
Appliances covered by this document are not connected to a flue for the discharge of products of combustion and are not connected to the mains electricity supply.
This document covers neither appliances supplied with LPG in the liquid phase nor appliance with fixed integral container which may or may not be refilled by the user
It does not apply to lighters as defined in EN ISO 9994.
It does not apply to gas appliances operating with a valve cartridge which is horizontally integrated into the chassis of the appliance also called "flat portable gas stove".
Requirements for rational use of energy have been included for stove burners.
However, such requirements have not been included for the other types of appliances because:
- for grills and barbecues, this is a type of cooking which is achieved by various means such as radiant elements; in addition this type of cooking varies according to the type of food and region where the appliance is used;
- for lighting appliances, the consumption is insignificant because these appliances have a very low rate and are used only for a few hours in a year;
- for heating appliances, all the heat produced is discharged into the environment;
- for tools such as blowtorches which are not professional tools in regular use, the gas consumption depends very much on the way it is used.
- Standard68 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies the construction and performance characteristics related to safety and the rational use of energy of portable appliances burning liquefied petroleum gases at the vapour pressure within the gas cartridge or gas cylinder, excepting those where the gas cartridge is inserted horizontally in the chassis.
NOTE These appliances are referred to in the body of the text as "appliances".
This document applies to various types of portable appliances burning liquefied petroleum gases at vapour pressure and designed to be used with cartridges as complying with EN 417 or gas cylinders.
This document covers appliances for outdoor or in well ventilated areas uses only.
For example the following types of appliances are covered:
a) cooking appliances (stoves, grills, barbecues...);
This document does not cover barbecues that can be used indoors;
b) lighting appliances;
c) heating appliances;
This document only applies to appliances with a maximum heat input of up to 3 kW (Hs) for outdoor use only;
d) blowtorches;
This document only applies to blowtorches without a flexible hose;
e) laboratory burners.
The requirements apply to these appliances or their functional sections whether or not the latter are independent or incorporated into an assembly.
Appliances covered by this document are not connected to a flue for the discharge of products of combustion and are not connected to the mains electricity supply.
This document covers neither appliances supplied with LPG in the liquid phase nor appliance with fixed integral container which may or may not be refilled by the user
It does not apply to lighters as defined in EN ISO 9994.
It does not apply to gas appliances operating with a valve cartridge which is horizontally integrated into the chassis of the appliance also called "flat portable gas stove".
Requirements for rational use of energy have been included for stove burners.
However, such requirements have not been included for the other types of appliances because:
- for grills and barbecues, this is a type of cooking which is achieved by various means such as radiant elements; in addition this type of cooking varies according to the type of food and region where the appliance is used;
- for lighting appliances, the consumption is insignificant because these appliances have a very low rate and are used only for a few hours in a year;
- for heating appliances, all the heat produced is discharged into the environment;
- for tools such as blowtorches which are not professional tools in regular use, the gas consumption depends very much on the way it is used.
- Standard68 pagesEnglish languagesale 10% offe-Library read for1 day
This European Standard specifies the general safety, design, construction, and performance requirements and testing of safety, control or regulating devices (hereafter referred to as controls) for burners and appliances burning one or more gaseous fuels or liquid fuels. This European Standard is applicable to controls with declared maximum inlet pressure up to and including 500 kPa and of nominal connection sizes up to and including DN 250.
This European standard specifies general product requirements for the following controls:
— automatic shut-off valves;
— automatic burner control systems;
— flame supervision devices;
— gas/air ratio controls;
— pressure regulators;
— manual taps;
— mechanical thermostats;
— multifunctional controls;
— pressure sensing devices;
— valve proving systems;
— automatic vent valves.
This European standard applies for control functions that are not covered by a specific control standard for burners and appliances burning one or more gaseous fuels or liquid fuels.
This European Standard applies also for safety accessories and pressure accessories with a product of the maximum allowable pressure PS and the volume V of less than 600 000 kPa · dm3 (6 000 bar · L) or with a product of PS and DN of less than 300 000 kPa (3 000 bar).
This European Standard applies for AC and DC supplied controls (for controls supplied by stand-alone battery system, battery systems for mobile applications or systems which are intended to be connected to DC supply networks controls see Annex I).
This European Standard is applicable to reset functions used for reset from lockout, e.g. due to ignition failure or temperature cut-out in burners and appliances (see Annex M).
This European Standard establishes methodologies for the determination of a Safety Integrity Level (SIL) and the determination of a Performance Level (PL) (see Annex J, Annex K and Annex L).
This European Standard gives guidelines for environmental aspects (see Annex N).
This European Standard does not apply to mechanical controls for use with liquid fuels.
The protection against environmental impact in open air (i.e. capable of withstanding UV radiation, wind, rain, snow, dirt deposits, condensation, ice and hoar frost (see IEV 441-11-05:2005), earthquake and external fire) is not covered by this standard.
This European Standard should be used in conjunction with the specific control standard (see Bibliography).
- Standard153 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies safety, construction, performance and testing requirements for pressure regulators and pneumatic gas/air ratio pressure regulators intended for use with gas burners and gas-burning appliances. This document applies to pressure regulators and pneumatic gas/air ratio pressure regulators of nominal connection size up to and including DN 250 at inlet pressures up to and including 500 kPa, for use with natural gas, manufactured gas or liquefied petroleum gas (LPG). It is not applicable to corrosive and waste gases. This document is specifically applicable to: — positive, zero and negative pressure regulators which can use auxiliary energy to change the outlet pressure setting; — pneumatic gas/air ratio pressure regulators, which function by controlling a gas outlet pressure in response to an air signal pressure, air signal differential pressure, and/or to a combustion chamber pressure signal; — gas/air ratio pressure regulators, which function by controlling an air outlet pressure in response to a gas signal pressure or a gas signal differential pressure. This document does not cover: — pressure regulators connected directly to gas distribution network or to a container that maintains a standard distribution pressure; — pressure regulators intended to be installed in the open air and exposed to the environment; — mechanically linked gas/air ratio controls; — electronic pressure regulators and gas/air ratio regulators, which are contained in ISO 23552-1. This document covers type testing only. NOTE Annexes A to H reference the relevant annexes of ISO 23550, general requirements and are applicable where required.
- Standard62 pagesEnglish languagesale 15% off
ISO 23551-4:2018 specifies safety, constructional and performance requirements of valve-proving systems (VPS), intended for use with gas burners and gas-burning appliances. It also describes the test procedures for checking compliance with these requirements and provides information necessary for the purchaser and user. ISO 23551-4:2018 is applicable to all types of VPS which are used for the automatic detection of leakage in a gas burner section having at least two valves designed in accordance with ISO 23551‑1 and which give a signal if the leakage of one of the valves exceeds the detection limit. ISO 23551-4:2018 is applicable to VPS with a maximum working pressure up to and including 500 kPa for use in systems using fuel gases. ISO 23551-4:2018 is not applicable to VPSs for use in explosive atmospheres. NOTE Provisions for production control are not part of the ISO 23551 series.
- Standard31 pagesEnglish languagesale 15% off
ISO 23550:2018 specifies safety, construction, performance and testing requirements for controls for gas burners and gas burning appliances for use with natural gas, manufactured gas or liquefied petroleum gas (LPG). ISO 23550:2018 applies to controls for use at maximum operating pressures up to and including 500 kPa. This document provides the general requirements that are intended to be the basis for the specific control standards found in the ISO 23551 and ISO 23552 series. These include the following: - automatic and semi-automatic gas valves; - gas thermoelectric flame supervision controls; - gas and oil /air ratio controls; - gas pressure regulators; - manual gas valves; - mechanical gas thermostats; - multifunctional gas controls; - air and gas pressure-sensing devices; - gas vent valves; - gas valve-proving systems. ISO 23550:2018 covers type testing only. ISO 23550:2018 is also applicable to Gas Quick Connectors (GQC) for use inside appliances with connections up to, and including DN 25, and a maximum operating pressure up to and including 100 kPa. GQCs include: - tube to tube connections; - tube to control connections; and - tube to fitting connections. ISO 23550:2018 does not apply to mechanical controls for use with liquid fuels. It is also not applicable to corrosive and waste gases.
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ISO 23551-10:2016 specifies the safety, design, construction and performance requirements and testing for automatic vent valves (hereafter referred to as "valves") for use with gas burners, gas appliances burning one or more gaseous fuels. It is applicable to valves with declared maximum inlet pressures up to and including 500 kPa (5 bar) of nominal connection sizes up to and including DN 100 (4"). It is applicable to - normally open valves, - electrically operated valves and to valves actuated by fluids where the control valves for these fluids are actuated electrically, but not to any external devices for switching the control signal or actuating energy, and - valves fitted with open position indicator switches. It is not applicable to - valves for burners and appliances using renewables and/or waste gases (i.e. gases having corrosive characteristics), In case valves are in contact with renewables and/or waste gases, it is recommend to use ISO 23551-10:2016 only if explicit information is provided and relevant test methods and requirements are specified. - valves for appliances intended to be installed in the open air and exposed to the outdoor environment, - valves that are connected directly to mains pipe-work or to a container that maintains a standard distribution pressure, and - valves suitable with oil. It is applicable to type testing only.
- Standard18 pagesEnglish languagesale 15% off
- Standard18 pagesEnglish languagesale 15% off
This European Standard specifies the safety, construction and performance requirements for combustion product sensing devices intended to be used in combustion control systems, hereinafter referred to as CPSD.
This European Standard applies to sensing devices for the measurement of combustion products from burners and appliances for domestic, commercial and industrial use burning:
- gaseous fuels according to EN 437; or
- liquid fuels having a viscosity at the burner inlet of 1,6 mm2/s (cSt) up to 6 mm2/s (cSt) at 20 °C, higher boiling petroleum based first raffinates (viscosity greater than 6 mm2/s), that require preheating for proper atomisation.
This European Standard applies to all types of stationary sensing devices measuring flue gas components O2, CO, CO2, H2, CxHy, NOX, SO2 or for a combination of them (multiple gasses).
This European Standard applies also to sensing devices for extractive systems.
This European Standard does not cover sensor requirements for combustible gas, combustible gas mixture and oil quality.
- Standard50 pagesEnglish languagesale 10% offe-Library read for1 day
This European Standard specifies the safety, construction and performance requirements for combustion product sensing devices intended to be used in combustion control systems, hereinafter referred to as CPSD.
This European Standard applies to sensing devices for the measurement of combustion products from burners and appliances for domestic, commercial and industrial use burning:
- gaseous fuels according to EN 437; or
- liquid fuels having a viscosity at the burner inlet of 1,6 mm2/s (cSt) up to 6 mm2/s (cSt) at 20 °C, higher boiling petroleum based first raffinates (viscosity greater than 6 mm2/s), that require preheating for proper atomisation.
This European Standard applies to all types of stationary sensing devices measuring flue gas components O2, CO, CO2, H2, CxHy, NOX, SO2 or for a combination of them (multiple gasses).
This European Standard applies also to sensing devices for extractive systems.
This European Standard does not cover sensor requirements for combustible gas, combustible gas mixture and oil quality.
- Standard50 pagesEnglish languagesale 10% offe-Library read for1 day
ISO 23551-1:2012 specifies safety, constructional and performance requirements and testing of automatic and semi-automatic shut-off valves for gas burners, gas appliances and appliances of similar use. It applies to normally closed valves, valves being mounted upstream to gas burners and gas appliances, valves with declared maximum working pressures up to and including 500 kPa, for use on burners or in appliances using fuel gases as natural gas, manufactured gas or liquefied petroleum gas (LPG), valves directly or indirectly actuated, electrically or by mechanical means, valves actuated by hydraulic or pneumatic means, valves where the flow rate is controlled by external electrical signals, either in discrete steps or proportional to the applied signal, and valves fitted with closed position indicator switches. ISO 23551-1:2012 covers type testing only.
- Standard37 pagesEnglish languagesale 15% off
ISO 22967:2010 specifies the terminology, test procedures and general requirements for the construction and operation of automatic forced draught gas burners, and the provision of related control and safety devices. It is applicable to automatic gas burners fitted with a combustion air fan, equipped as described therein, and intended for use in appliances of different types and operated with fuel gases, total pre‑mixed burners and nozzle mixed burners, single burners with a single combustion chamber, single‑fuel and dual‑fuel burners when operating only on gas, and the gas function of dual-fuel burners designed for simultaneous operation on gaseous and liquid fuels (for the latter operation, see also ISO 22968). It is not applicable to burners used in direct fired processes either with defined combustion chamber applications or where the combustion chamber wall surface temperature is greater than 750 °C or the heat‑transfer medium temperature is greater than 500 °C.
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