2021-02-23 and 2021-08- TC origine - corrects crosses in Table E.1, 2nd and 3rd columns, row "Transformers:" and Formula (J.9)

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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).

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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 that fall within the scope of the Council Directive on the approximation of the laws of Member States concerning gas appliances 2009/142/EC.
The standard makes recommendations for the use of the gases and pressures to be applied for the tests. The full procedure will be given in the corresponding appliance standards.
NOTE   The test gases and the test pressures specified in this standard are in principle intended to be used with all the appliances in order to establish conformity with the corresponding standards.
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.

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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 Europen 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 equipped to increase the total appliance efficiency; see Annex M.

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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.

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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.

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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.

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  • Standard
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This European Standard specifies the general safety, design, construction, and performance requirements and testing for 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 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• litres) 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.
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)), earth quake, external fire are not covered by this standard.
This European Standard should be used in conjunction with the specific control standard (see Bibliography).

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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.

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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.

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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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This European Standard specifies the safety, design, construction and performance requirements for Temperature Control Function (TCF) and Combustion Product Discharge Safety Device (TTB) intended for use with burners and appliances using gaseous or liquid fuels.
It also describes the test procedures for checking compliance with these requirements.
This European Standard 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 European Standard is applicable to electronically based TTB and TCF only.

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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.

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ISO 23551-8:2016 specifies the safety, construction and performance requirements for multifunctional controls intended for use with gas burners, gas appliances and similar use, hereafter referred to as "MFC". ISO 23551-8:2016 is applicable to 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 with one or more fuel gases. MFC consist of two or more functions, at least one of which is a mechanical control, as specified in the relevant control standards.

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  • Standard
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This European Standard specifies the safety, construction and performance requirements for automatic shut-off and control valves for use with gas burners, gas appliances and similar use, hereafter referred to as ‘valves’.
This European Standard is applicable to valves  with declared maximum inlet pressures of more than 500 kPa  (5 bar)  and up to and including 6 300 kPa (63 bar) for use with one or more fuel gases in accordance with EN 437 in vaporous phases.
This European Standard is applicable to
   electrically operated valves and to valves actuated by fluids where the pilot valves for these fluids are actuated electrically, 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.
This European Standard is not applicable to valves specifically designed for use in transmission and distribution networks.
NOTE   Provisions for final product inspection and testing by the manufacturer are not specified.

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This European Standard specifies the safety, construction and performance requirements for thermoelectric flame supervision devices, energized by a thermocouple intended for use with gas burners, gas appliances and similar use, hereafter referred to as "controls".
This European Standard is applicable to controls with declared maximum inlet pressures up to and including 500 kPa (5 bar) of nominal connection sizes up to and including DN 50 for use with one or more fuel gases in accordance with EN 437.
This European Standard is not applicable to:
a)   the thermocouple;
b)   controls which use auxiliary energy (e.g. electrical energy supplied externally).
NOTE   Provisions for final product inspection and testing by the manufacturer are not specified.

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This European Standard specifies the safety, construction and performance requirements for thermoelectric flame supervision devices, energized by a thermocouple intended for use with gas burners, gas appliances and similar use, hereafter referred to as "controls".
This European Standard is applicable to controls with declared maximum inlet pressures up to and including 500 kPa (5 bar) of nominal connection sizes up to and including DN 50 for use with one or more fuel gases in accordance with EN 437.
This European Standard is not applicable to:
a)   the thermocouple;
b)   controls which use auxiliary energy (e.g. electrical energy supplied externally).
NOTE   Provisions for final product inspection and testing by the manufacturer are not specified.

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ISO 23551-9:2015 specifies safety, constructional, and performance requirements and testing of mechanical gas thermostat for gas burners, gas appliances, and similar use hereafter referred to as "thermostats". ISO 23551-9:2015 covers type testing only. ISO 23551-9:2015 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 burners and gas-burning appliances using fuel gases as natural gas, manufactured gas, and liquefied petroleum gas (LPG). ISO 23551-9:2015 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. ISO 23551-9:2015 only applies to mechanical thermostats used on gas appliances where the thermostat is not directly exposed to the outdoor environment. ISO 23551-9:2015 only applies to mechanical thermostats which are intended for operating control functions.

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This European Standard contains the relevant functional requirements for gas pressure regulating stations, which form part of gas transmission or distribution systems. It is applicable to the design, materials, construction, testing, operation and maintenance of gas pressure regulating stations.
This European Standard does not apply to gas pressure regulating stations commissioned prior to the publication of this standard.
The stations covered by this European Standard have a maximum upstream operating pressure which does not exceed 100 bar. For higher maximum upstream operating pressures this standard should 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 or less than 200 m3/h under normal conditions, EN 12279 applies.
Basic system requirements for gas pressure regulating stations are contained in this European Standard. 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 regulating and measuring stations, the additional requirements of EN 1776 can apply.
The requirements in this European Standard 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 other relevant standards.
The requirements of this European Standard 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 requirements in this European Standard are based on the physical and chemical data of gaseous fuels – including non-conventional gases – in accordance with Table 1 of EN 437:2003+A1:2009 for first and second family gases. Additional requirements in the case of gaseous fuels heavier than air and/or sour gases are not covered by this European Standard.
The objective of this European Standard 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 management during the design, construction and operation.

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EN 16340 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.

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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.

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EN 1643 specifies safety, constructional and performance requirements of valve-proving systems, hereafter referred to as 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. This European Standard applies 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 EN 161 and which give a signal if the leakage of one of the valves exceeds the detection limit. This European Standard applies to VPSs with a maximum working pressure up to and including 500 kPa for use in systems using fuel gases of the 1st, 2nd or 3rd families. This European Standard does not apply to VPSs for use in explosive atmospheres. This European Standard is applicable to AC and DC supplied VPS (for VPS supplied by stand-alone battery system, battery systems for mobile applications or systems which are intended to be connected to DC supply networks VPS see Annex I). Provisions for production control are not part of this European Standard.

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ISO 23551-5:2014 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. ISO 23551-5:2014 applies to following types of manual gas valves: manual gas shut-off valve; gas burner valve; appliance connector valve; "delta C" valve. ISO 23551-5:2014 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. It is not applicable to corrosive and waste gases. ISO 23551-5:2014 covers type testing only.

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This European Standard specifies the safety, construction and performance requirements for automatic vent valves for use with gas burners, gas appliances and similar use, hereafter referred to as ‘valves’. This European Standard 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 for use with one or more fuel gases in accordance with EN 437:2003+A1:2009; - electrically operated 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.

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This European Standard specifies the safety, construction and performance requirements for automatic shut-off valves for use with gas burners, gas appliances and similar use, hereafter referred to as 'valves'. This European Standard 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 250 for use with one or more fuel gases in accordance with EN 437. This European Standard is applicable 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 electrical devices for switching the control signal or actuating energy. An assessment method for valve designs is given by this European Standard. This European Standard is also applicable to valves where the flow rate is controlled by external electrical signals, either in discrete steps or proportional to the applied signal. This European Standard is also applicable to valves fitted with closed position indicator switches. This European standard establishes methodologies for the determination of a Performance Level (PL) in accordance with EN 13611:2007+A2:2011, Annexes K and L.

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This European Standard specifies the safety, construction and performance requirements for automatic burner control systems, programming units and flame detector devices, intended for use with gas and oil burners and gas and oil burning appliances, with or without fans and similar use. This European Standard is applicable to automatic burner control systems that include additional functions. This European Standard does not cover automatic burner control systems utilizing thermo-electric flame supervision devices.

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This European Standard specifies the safety, construction and performance requirements for multifunctional controls intended for use with gas burners, gas appliances and similar use, hereafter referred to as ”MFC”. This European Standard is applicable to 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 with one or more fuel gases in accordance with EN 437. MFC consist of two or more functions, at least one of which is a mechanical control, as specified in the relevant control standards. MFC consisting only of electronics are not covered by EN 126 (an example is a combination of functions according to EN 298 and EN 1643).

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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.

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This European Standard specifies the safety, construction and performance requirements for automatic burner control systems, programming units and flame detector devices, intended for for similar usages, with gas and oil burners and gas and oil burning appliances, with or without fans. These devices are hereafter referred to generally as "automatic burner control systems”.
This European Standard is applicable to automatic burner control systems that include additional functions.
This European Standard does not cover automatic burner control systems utilizing thermo-electric flame supervision devices.
NOTE 1   European Standards for burners, appliances or processes which use automatic burner control systems, programming units or flame detectors can override the requirements of this standard.
NOTE 2   Provisions for production control are not part of this European Standard.

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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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This European Standard specifies the safety, construction and performance requirements for mechanical thermostats intended for use with gas appliances and similar use, hereafter referred to as ‘thermostats’. This European Standard applies to thermostats with declared maximum inlet pressures up to and including 50 kPa (500 mbar) of nominal connection sizes up to and including DN 50 for use with one or more fuel gases in accordance with EN 437. This European Standard applies to thermostats controlling the gas flow directly or indirectly through an integral gas valve, and which do not require external electrical energy for their operation. This European Standard only applies to thermostats used with gas appliances which are not installed in the open air. Thermostats dealt with in this European Standard are intended for control functions.

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This European Standard specifies the safety, construction and performance requirements for pressure sensing devices. This European Standard covers type testing only. It applies to pressure sensing devices for the measurement of pressures of combustible gases of the first, second and third families, air, combustion products for maximum inlet pressures up to 500 kPa (5 bar). It applies to all types of pressure sensing devices, including electronic, differential and inferential types. It specifies requirements for pressure sensing devices which are intended to be applied to steam boilers and as such need to meet increased reliability requirements. These devices are classified as PSD-S in this European Standard.

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This European Standard specifies the safety, construction and performance requirements for manually operated taps and pre-setting taps intended for use with gas appliances and similar use, hereafter referred to as "taps". This European Standard is applicable to taps with declared maximum inlet pressures up to and including 50 kPa (500 mbar) of nominal connection sizes up to and including DN 50 for use with one or more fuel gases in accordance with EN 437. This European Standard does not apply to manual operated shut-off valves conforming to EN 331.

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This European Standard specifies the safety, construction and performance requirements for mechanical thermostats intended for use with gas appliances and similar use, hereafter referred to as ‘thermostats’.
This European Standard applies to thermostats with declared maximum inlet pressures up to and including
50 kPa (500 mbar) of nominal connection sizes up to and including DN 50 for use with one or more fuel gases in accordance with EN 437.
This European Standard applies to thermostats controlling the gas flow directly or indirectly through an integral gas valve, and which do not require external electrical energy for their operation.
This European Standard only applies to thermostats used with gas appliances which are not installed in the open air.
Thermostats dealt with in this European Standard are intended for control functions.

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ISO 23552-1:2007 specifies safety, construction and performance requirements for electronic fuel/air ratio control systems intended for use with gas or oil burners and gas or oil burning appliances. ISO 23552-1:2007 also describes the test procedures for evaluating these requirements and specifies information necessary for installation and use. ISO 23552-1:2007 is applicable only to closed-loop fuel/air ratio controls and does not differentiate into classes by heat input. ISO 23552-1:2007 applies to electronic fuel/air ratio control systems that can be tested independently or as part of an appliance or as part of a burner.

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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.

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This document comprises a list of recommendations for Technical Committees, whose responsibility it is to decide which of these they wish to incorporate in Standards.
These recommendations are based on the principles stated hereafter:
1) To supplement the requirements for marking of the appliance and its packaging, given by Essential Requirements 1.2.3 of the EU Directive 90/396/EEC "Gas appliances", with information corresponding to the countries of destination of the appliance.
In view of the differences accross Europe with respect to the distribution of gases and the installation of appliances, the identification of the suitability of an appliance is only explicit if the appliance category is mentioned in combination with the country of destination. This information has therefore been considered as essential for the safe use of gas appliances.
2) To establish a ling between country, category, gas and pressure.
The marking of this information, in effect, constitutes a coherent whole which is intended to give unambiguous information about the use of the appliance concerned.
3) To use symbols in place of texts in the national languages,
while establishing two levels of symbols, obligatory (see6.1) or optional (see 6.2), in order to take into account national practices declared by CEN Members.
The ad hoc Group "Marking of gas appliances" has restricted its recommendations to those which apply to all relevant Technical Committees of PC 3.
Other information can appear on the appliance or on the packaging.
All the following texts are only informative in the context of this CR, but they serve as model texts for appliances standards.

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ISO 23551-3:2005 specifies the safety, construction and performance requirements for gas/air ratio controls, pneumatic type, for inlet pressures up to and including 50 kPa, of a nominal connection size up to and including DN 250, intended for use with gas appliances using fuel gases as natural gas, manufactures gas or liquefied petroleum gas (LPG). It also describes the test procedures for evaluating these requirements and specifies information necessary for installation and use. It is applicable to gas/air ratio controls for gas-burning appliances that can be tested independently of the appliance. It is applicable to gas/air ratio controls which function by controlling a gas pressure (or differential pressure) output in response to an air pressure (or differential pressure) and to a furnace back pressure signal input; but gas/air ratio controls which change the air pressure in response to the gas pressure are not excluded. It is not applicable to mechanically linked valves and electronic systems.

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This European Standard specifies the safety, construction and performance requirements for electronic gas/air ratio control systems (GARCs) intended for use with gas burners and gas burning appliances. It also describes the test procedures for evaluating these requirements and specifies information necessary for installation and use.
This standard is only applicable to closed loop gas/air ratio controls (see 3.1) and does not differentiate into classification by heat input.
This standard applies to electronic GARCs that can be tested independently, as well as part of an appliance or a gas burner.

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This European Standard specifies the safety, construction and performance requirements for electronic gas/air ratio control systems (GARCs) intended for use with gas burners and gas burning appliances. It also describes the test procedures for evaluating these requirements and specifies information necessary for installation and use.
This standard is only applicable to closed loop gas/air ratio controls (see 3.1) and does not differentiate into classification by heat input.
This standard applies to electronic GARCs that can be tested independently, as well as part of an appliance or a gas burner.

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Migrated from Progress Sheet (TC Comment) (2000-07-10): CEN REPORT !!!  (document MARCOGAZ) ++ This CR 1404 will later become an ENV or an EN.

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This part of this European Standard specifies the requirements for internal or external grate firing systems commencing at the fuel bunkers and ending at the ash extraction plant. For combination of various firing systems, the individual requirements of each system also apply.
If several fuels are burnt simultaneously or if a fuel quality varies considerably (e.g. moisture content), additional safety measures can be necessary, especially with respect to limitation of the fuel flow into the firing system and ensuring proper air supply to the individual fuels.

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This document comprises a list of recommendations for Technical Committees, whose responsibility it is to decide which of these they wish to incorporate in Standards.
These recommendations are based on the principles stated hereafter:
1) To supplement the requirements for marking of the appliance and its packaging, given by Essential Requirements 1.2.3 of the EU Directive 90/396/EEC "Gas appliances", with information corresponding to the countries of destination of the appliance.
In view of the differences accross Europe with respect to the distribution of gases and the installation of appliances, the identification of the suitability of an appliance is only explicit if the appliance category is mentioned in combination with the country of destination. This information has therefore been considered as essential for the safe use of gas appliances.
2) To establish a ling between country, category, gas and pressure.
The marking of this information, in effect, constitutes a coherent whole which is intended to give unambiguous information about the use of the appliance concerned.
3) To use symbols in place of texts in the national languages,
while establishing two levels of symbols, obligatory (see6.1) or optional (see 6.2), in order to take into account national practices declared by CEN Members.
The ad hoc Group "Marking of gas appliances" has restricted its recommendations to those which apply to all relevant Technical Committees of PC 3.
Other information can appear on the appliance or on the packaging.
All the following texts are only informative in the context of this CR, but they serve as model texts for appliances standards.

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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.

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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).

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