813/2013 - Commission Regulation (EU) No 813/2013 of 2 August 2013 implementing Directive 2009/125/EC of the European Parliament and of the Council with regard to ecodesign requirements for space heaters and combination heaters

This European Standard specifies the common requirements and test methods, as well as the classification, marking and energy labelling of gas-fired central heating boilers that are fitted with atmospheric burners, fan assisted atmospheric burners or fully premixed burners, and are hereafter referred to as “boilers”.
This European Standard is to be used in conjunction with the specific Parts 2 (Part 2-1 and following ones).
This European Standard applies to boilers of types B and C.
NOTE For further background information on appliance types see CEN/TR 1749:2014 [1].
a) that use one or more combustible gases of the three gas families at the pressures stated in EN 437;
b) where the temperature of the water is below or above 105 °C during normal operation;
c) where the maximum operating pressure in the water circuit does not exceed 6 bar;
d) which can give rise to condensation under certain circumstances;
e) which are declared in the instructions for installation to be either a "condensing" boiler or a "low temperature boiler" or a "standard boiler" or an "other boiler". If no declaration is given the boiler is to be considered both a "standard boiler" and an "other boiler";
NOTE The Ecodesign Directive defines "other boilers", "low temperature boilers" and "condensing boilers". The Boiler Efficiency Directive defines "standard boilers", "low temperature boilers" and "condensing boilers". Depending on the legislation applied, a boiler can be both "a standard boiler" and an "other boiler"."
f) which are intended to be installed inside a building or in a partially protected place;
g) which are intended to produce also hot water either by the instantaneous or storage principle as a single unit.
This European Standard applies to boilers designed for sealed water systems or for open water systems.
NOTE This general standard and the specific standards (see Part 2) provide requirements for boilers with known constructions. For boilers with any alternative constructions, which might not fully be covered by this standard or a specific standard, the risk associated with this alternative construction will need to be assessed.
An example of an assessment methodology, based upon risk assessment, is given in Clause 11.
This European Standard is not intended to cover appliances intended for connection to gas grids where the quality of the distributed gas is likely to vary to a large extent over the lifetime of the appliance (see Annex EE).
This European Standard is not intended to cover appliances designed and constructed to burn gas containing toxic components.

This document specifies the requirements and test methods, as well as the classification and marking of gas-fired central heating boilers that are fitted with atmospheric burners, fan assisted atmospheric burners or fully premixed burners, and are hereafter referred to as "boilers".
This document is intended to be used in conjunction with EN 15502-1:2021.
This document covers gas-fired central heating boilers from the types C1 up to C(11) and the types B2, B3 and B5:
NOTE 1   For further background information on appliance types see EN 1749:2020.
a)   that have a nominal heat input (on the basis of net calorific value) not exceeding 1 000 kW;
b)   that use one or more combustible gases of the three gas families at the pressures stated in EN 437:2021;
c)   where the temperature of the heat transfer fluid does not exceed 105 °C during normal operation;
d)   where the maximum operating pressure in the water circuit does not exceed 6 bar;
e)   which can give rise to condensation under certain circumstances;
f)   which are declared in the instructions for installation to be either a "condensing" boiler or a "low temperature boiler" or a "standard boiler"; if no declaration is given the boiler is to be considered a "standard boiler";
g)   which are intended to be installed inside a building or in a partially protected place;
h)   which are intended to produce also hot water either by the instantaneous or storage principle as a single unit;
i)   which are designed for either sealed water systems or for open water systems;
j)   which are either modular boilers, or non-modular boilers.
k)   which are from the types C(10) that are equipped with a gas-air ratio control and that have a ∆pmax, saf(min) of 25 Pa, and C(11) that have condensing boiler modules that are equipped with a gas-air ratio control and that have a ∆pmax, saf(min) of 25 Pa.
NOTE 2   This document provides requirements for boilers with known constructions. For boilers with any alternative constructions, which might not fully be covered by this standard, the risk associated with this alternative construction needs to be assessed.
An example of an assessment methodology, based upon risk assessment, is given in Clause 11.
This document does not cover all the requirements for:
aa)   appliances above 1 000 kW;
ab)   appliances that are intended to be connected to gas grids where the quality of the distributed gas is likely to vary to a large extent over the lifetime of the appliance (see Annex AB of EN 15502-1:2021);
ac)   appliances using flue dampers;
ad)   appliances of the types B21, B31, B51, C21, C41, C51, C61, C71, C81, C(12) and C(13);
ae)   C7 appliances that have a nominal heat input (on the basis of net calorific value) exceeding 70 kW;
af)   appliances incorporating flexible plastic flue liners;
ag)   C(10) boilers:
1)   without a gas-air ratio control, or
2)   which are non-condensing appliances, or
3)   which have a maximum safety pressure difference at minimum heat input not equal to 25 Pa (∆pmax, saf(min));
ah)   C(11) boilers that have boiler modules:
1)   without a gas-air ratio control, or
2)   which are non-condensing appliances, or
3)   which have a maximum safety pressure difference at minimum heat input not equal to 25 Pa (∆pmax, saf(min));
ai)   appliances intended to be connected to a flue having mechanical extraction;
aj)   surface temperatures of external parts particular to children and elderly people;
ak)   appliances that are intended to burn natural gases of the second family where hydrogen is added to the natural gas;
al)   appliances equipped with an adaptive combustion control function (ACCF);
am)   boilers intended to be installed in areas accessible to elderly people and children.

This document specifies, the requirements and test methods concerning the classification and marking of gas-fired central heating boilers that are fitted with atmospheric burners, fan assisted atmospheric burners and are hereafter referred to as “boilers”.
Where the word boiler is used, this is intended to be read as the boiler including its connecting ducts, ducts and terminals, if any.
This document covers gas-fired central heating boilers type B11, B11BS, B12, B12BS, B13, B13BS:
NOTE 1   For further background information on appliance types see EN 1749:2020.
a)   that have a nominal heat input (on the basis of net calorific value) not exceeding 70 kW;
b)   that use one or more combustible gases of the three gas families at the pressures stated in EN 437:2021;
c)   where the temperature of the heat transfer fluid does not exceed 105 °C during normal operation;
d)   where the maximum operating pressure in the water circuit does not exceed 6 bar;
e)   which are declared in the technical instructions to be either a “low temperature boiler” or a “standard boiler”. If no declaration is given the boiler is to be considered a “standard boiler”;
f)   which are intended to be installed inside a building or in a partially protected place;
g)   which are intended to produce also hot water either by the instantaneous or storage principle, as a single unit;
h)   which are designed for either sealed water systems or for open water systems.
NOTE 2   This document provides requirements for boilers with known constructions. For boilers with any alternative constructions, which might not fully be covered by this document, the risk associated with this alternative construction needs to be assessed.
An example of an assessment methodology, based upon risk assessment, is given in Clause 11.
This document does not cover all the requirements for:
aa)   appliances that are intended to be connected to gas grids where the quality of the distributed gas is likely to vary to a large extent over the lifetime of the appliance (see Annex AB);
ab)   appliances using flue dampers;
ac)   appliances that have a nominal heat input (on the basis of net calorific value) exceeding 70 kW;
ad)   appliances of the types A, B14, B¬2, B3, B4, B5 and C;
ae)   appliances intended to be connected to a (common) flue having mechanical extraction;
af)   appliances with gas/air ratio control;
ag)   modular boilers;
ah)   boilers which can give rise to condensation under certain circumstances;
ai)   boilers intended to be installed in a room with a foreseeable negative pressure relative to the pressure in the flue system;
aj)   surface temperatures of external parts particular to children and elderly people;
ak)   appliances that are intended to burn natural gases of the second family where hydrogen is added to the natural gas;
al)   boilers intended to be installed in areas accessible to elderly people and children;
am)   boilers equipped with an adaptive combustion control function (ACCF).
NOTE   Negative pressure relative to the pressure in the flue system can for example be caused by mechanical or thermal ventilation in airtight buildings.

1.1   Scope of EN 12309 series
Appliances covered by this document include one or a combination of the following:
-   gas-fired sorption chiller;
-   gas-fired sorption chiller/heater;
-   gas-fired sorption heat pump;
-   hybrids based on gas sorption appliances.
This document applies to appliances designed to be used for space heating or cooling or refrigeration with or without heat recovery.
This document applies to appliances having flue gas systems of Type B and Type C (according to EN 1749:2020) and to appliances designed for outdoor installations, including Type A.
EN 12309 does not apply to air conditioners, it only applies to appliances having:
-   integral burners under the control of fully automatic burner control systems;
-   closed system refrigerant circuits in which the refrigerant does not come into direct contact with the water or air to be cooled or heated;
-   mechanical means to assist transportation of the combustion air and/or the flue gas.
The above appliances can have one or more primary or secondary functions (i.e. heat recovery - see definitions in EN 12309-1:2023).
In the case of packaged units (consisting of several parts), this document applies only to those designed and supplied as a complete package.
The appliances having their condenser cooled by air and by the evaporation of external additional water are not covered by EN 12309.
Installations used for heating and/or cooling of industrial processes are not within the scope of EN 12309. All the symbols given in this text are to be used regardless of the language used.
1.2   Scope of this Part 3 of EN 12309
This part of EN 12309 specifies the requirements, test methods and conditions for gas-fired sorption appliances for heating and/or cooling with a net heat input not exceeding 70 kW.
This part of EN 12309 deals particularly with test protocols and tools to calculate the capacity, the gas utilization efficiency and the electrical power input of the appliance. This data can be used in particular to calculate the seasonal efficiency of the appliance.

This document specifies the requirements and test methods, as well as the classification and marking of gas-fired central heating boilers that are fitted with atmospheric burners, fan assisted atmospheric burners or fully premixed burners, and are hereafter referred to as "boilers".
This document is intended to be used in conjunction with EN 15502-1:2021.
This document covers gas-fired central heating boilers from the types C1 up to C(11) and the types B2, B3 and B5:
NOTE 1   For further background information on appliance types see EN 1749:2020.
a)   that have a nominal heat input (on the basis of net calorific value) not exceeding 1 000 kW;
b)   that use one or more combustible gases of the three gas families at the pressures stated in EN 437:2021;
c)   where the temperature of the heat transfer fluid does not exceed 105 °C during normal operation;
d)   where the maximum operating pressure in the water circuit does not exceed 6 bar;
e)   which can give rise to condensation under certain circumstances;
f)   which are declared in the instructions for installation to be either a "condensing" boiler or a "low temperature boiler" or a "standard boiler"; if no declaration is given the boiler is to be considered a "standard boiler";
g)   which are intended to be installed inside a building or in a partially protected place;
h)   which are intended to produce also hot water either by the instantaneous or storage principle as a single unit;
i)   which are designed for either sealed water systems or for open water systems;
j)   which are either modular boilers, or non-modular boilers.
k)   which are from the types C(10) that are equipped with a gas-air ratio control and that have a ∆pmax, saf(min) of 25 Pa, and C(11) that have condensing boiler modules that are equipped with a gas-air ratio control and that have a ∆pmax, saf(min) of 25 Pa.
NOTE 2   This document provides requirements for boilers with known constructions. For boilers with any alternative constructions, which might not fully be covered by this standard, the risk associated with this alternative construction needs to be assessed.
An example of an assessment methodology, based upon risk assessment, is given in Clause 11.
This document does not cover all the requirements for:
aa)   appliances above 1 000 kW;
ab)   appliances that are intended to be connected to gas grids where the quality of the distributed gas is likely to vary to a large extent over the lifetime of the appliance (see Annex AB of EN 15502-1:2021);
ac)   appliances using flue dampers;
ad)   appliances of the types B21, B31, B51, C21, C41, C51, C61, C71, C81, C(12) and C(13);
ae)   C7 appliances that have a nominal heat input (on the basis of net calorific value) exceeding 70 kW;
af)   appliances incorporating flexible plastic flue liners;
ag)   C(10) boilers:
1)   without a gas-air ratio control, or
2)   which are non-condensing appliances, or
3)   which have a maximum safety pressure difference at minimum heat input not equal to 25 Pa (∆pmax, saf(min));
ah)   C(11) boilers that have boiler modules:
1)   without a gas-air ratio control, or
2)   which are non-condensing appliances, or
3)   which have a maximum safety pressure difference at minimum heat input not equal to 25 Pa (∆pmax, saf(min));
ai)   appliances intended to be connected to a flue having mechanical extraction;
aj)   surface temperatures of external parts particular to children and elderly people;
ak)   appliances that are intended to burn natural gases of the second family where hydrogen is added to the natural gas;
al)   appliances equipped with an adaptive combustion control function (ACCF);
am)   boilers intended to be installed in areas accessible to elderly people and children.

This document specifies, the requirements and tests methods concerning, in particular, the construction, safety, fitness for purpose, and rational use of energy, as well as the classification and marking of hybrid products.
The hybrid product is composed by:
-   a gas boiler as heat generator which could supply the heat demand in all operating conditions;
-   an electrical heat pump, as heat generator, which has not to fulfil the heat demand in all operating conditions;
-   a control unit (see definition 3.10).
The gas boiler as part of the hybrid product covered by this document is a gas-fired central heating boilers from the types C1 up to C9 and the types B2, B3 and B5, according to the classification in EN 1749:2020:
a)   that have a nominal heat input (on the basis of gross calorific value) not exceeding 400 kW;
b)   that use one or more combustible gases of the three gas families at the pressures stated in EN 437;
c)   where the temperature of the heat transfer fluid does not exceed 105 °C during normal operation;
d)   where the maximum operating pressure in the water circuit does not exceed 6 bar;
e)   which shall be classified as gas boiler;
f)   which are intended to be installed either indoors or outdoors in a partially protected place;
g)   which may include the facility to produce hot water, either by the instantaneous or storage principle, the whole being marketed as a single unit;
h)   which are designed for either sealed water systems or for open water systems.
This document provides requirements for boilers with known constructions. For boilers with any alternative constructions, which might not fully be covered by this document, the risk associated with this alternative construction needs to be assessed.
An example of an assessment methodology, based upon risk assessment and which covers the essential requirements of the Gas Appliance Regulation UE/426/2016, is given in Clause 11.
This document does not cover all the requirements for:
Appliances that are intended to be connected to gas grids where the quality of the distributed gas is likely to vary to a large extent over the lifetime of the appliance (see Annex DD);
a)   appliances using flue dampers;
b)   appliances of the types B21, B31, B51, C21, C41, C51, C61, C71 and C81;
c)   appliances incorporating flexible plastic flue liners;
d)   appliances designed to become connected to a combined flue duct system that is designed to operate under overpressure (for example Ca)).
This document specifies minimum operating requirements which ensure that the products are fit for the use designated by the manufacturer when used for space heating and/or DHW production.
This part specifies the common requirements and test methods concerning, in particular the construction, safety, fitness for purpose, and rational use of energy.
This document is to be used in conjunction with:
a)   the gas fired boiler, the generic part EN 15502-1 and specific Part 2-1 and Part 2-2.
b)   the electrical heat pump, EN 14511-4:2018, EN 378-1:2016 to EN 378-4:2016+A1:2019 and FprEN 14825:2020.
c)   electrical safety, EN 60335-1:2019, EN 60335-2-102:2016, EN 60335-2-40:2012, EN 60335-2-40/A2:2009 and EN 60204-1.
d)   for domestic hot water production, EN 13203-5.

This European Standard specifies the common requirements and test methods, as well as the classification, marking and energy labelling of gas-fired central heating boilers that are fitted with atmospheric burners, fan assisted atmospheric burners or fully premixed burners, and are hereafter referred to as “boilers”.
This European Standard is to be used in conjunction with the specific Parts 2 (Part 2-1 and following ones).
This European Standard applies to boilers of types B and C.
NOTE For further background information on appliance types see CEN/TR 1749:2014 [1].
a) that use one or more combustible gases of the three gas families at the pressures stated in EN 437;
b) where the temperature of the water is below or above 105 °C during normal operation;
c) where the maximum operating pressure in the water circuit does not exceed 6 bar;
d) which can give rise to condensation under certain circumstances;
e) which are declared in the instructions for installation to be either a "condensing" boiler or a "low temperature boiler" or a "standard boiler" or an "other boiler". If no declaration is given the boiler is to be considered both a "standard boiler" and an "other boiler";
NOTE The Ecodesign Directive defines "other boilers", "low temperature boilers" and "condensing boilers". The Boiler Efficiency Directive defines "standard boilers", "low temperature boilers" and "condensing boilers". Depending on the legislation applied, a boiler can be both "a standard boiler" and an "other boiler"."
f) which are intended to be installed inside a building or in a partially protected place;
g) which are intended to produce also hot water either by the instantaneous or storage principle as a single unit.
This European Standard applies to boilers designed for sealed water systems or for open water systems.
NOTE This general standard and the specific standards (see Part 2) provide requirements for boilers with known constructions. For boilers with any alternative constructions, which might not fully be covered by this standard or a specific standard, the risk associated with this alternative construction will need to be assessed.
An example of an assessment methodology, based upon risk assessment, is given in Clause 11.
This European Standard is not intended to cover appliances intended for connection to gas grids where the quality of the distributed gas is likely to vary to a large extent over the lifetime of the appliance (see Annex EE).
This European Standard is not intended to cover appliances designed and constructed to burn gas containing toxic components.

This document specifies the requirements and tests methods concerning the construction, safety, fitness for purpose, and rational use of energy, as well as the classification and marking of hybrid units.
A hybrid unit is composed of:
-   a gas boiler as a heat generator which is able to supply the heat demand in all operating conditions;
-   an electrical air-to-water heat pump, as a heat generator, which does not have to meet the heat demand in all operating conditions;
-   a control unit (see definition 3.1.10).
A hybrid unit can include the facility to produce hot water, either by the instantaneous or storage principle, the whole being marketed as a single unit.
A gas boiler as part of a hybrid unit covered by this document is a gas-fired central heating boiler from the types C1 up to C9 and the types B2, B3 and B5, according to the classification in EN 1749:2020:
a)   that have a nominal heat input (on the basis of gross calorific value) not exceeding 400 kW;
b)   that use one or more combustible gases of the three gas families at the pressures stated in EN 437:2021;
c)   where the temperature of the heat transfer fluid does not exceed 105 °C during normal operation;
d)   where the maximum operating pressure in the water circuit does not exceed 6 bar;
e)   which are classified as a gas-fired central heating boiler;
f)   which are intended to be installed either indoors or outdoors in a partially protected place;
g)   which are designed for either sealed water systems or for open water systems.
This document provides requirements for boilers with known constructions.
NOTE 1   For boilers with any alternative constructions, which might not fully be covered by this document, the risk associated with this alternative construction needs to be assessed.
NOTE 2   An example of an assessment methodology, based upon risk assessment and which covers the essential requirements of the Gas Appliance Regulation UE/426/2016, is given in Clause 11.
This document does not cover all the requirements for:
aa)   appliances that are intended to be connected to gas grids where the quality of the distributed gas is likely to vary to a large extent over the lifetime of the appliance (see EN 15502-1:2021, Annex AB);
ab)   appliances using flue dampers;
ac)   appliances of the types B21, B31, B51, C21, C41, C51, C61, C71 and C81;
ad)   appliances incorporating flexible plastic flue liners;
ae)   appliances designed to become connected to a combined flue duct system.
af)   appliances of the types C(10),C(11), C(12) and C(13);
ag)   C7 appliances that have a nominal heat input (on the basis of net calorific value) exceeding 70 kW;
ah)   appliances intended to be connected to a flue having mechanical extraction;
ai)   surface temperatures of external parts particular to children and elderly people;
aj)   appliances that are intended to burn natural gases of the second family where hydrogen is added to the natural gas;
ak)   appliances equipped with an adaptive combustion control function (ACCF);
al)   boilers intended to be installed in areas accessible to elderly people and children.
This document specifies minimum operating requirements which ensure that the products are fit for the use designated by the technical instructions when used for space heating and/or DHW production.
This document is intended to be used in conjunction with:
ba)   the gas-fired boiler, the generic part EN 15502-1:2021 and specific parts FprEN 15502-2-1:2022 and FprEN 15502-2-2:2022;
bb)   the electrical heat pump, EN 14511-4:2018, EN 378-1:2016+A1:2020, EN 378-2:2016 and EN 14825:2022;
bc)   electrical safety, EN 60335-1:2012 , EN 60335-2-102:2016 and IEC 60335-2-40:2018;
bd)   for domestic hot water production, EN 13203-5:2022.

This part of the FprEN 16905 series specifies the calculation of seasonal performance factor for gas-fired endothermic engine driven heat pumps for heating and/or cooling mode including the engine heat recovery.

This document establishes requirements for determining, in accordance with a standardized procedure, the sound power level emitted into the surrounding air by air conditioners, heat pumps, liquid chilling packages with electrically driven compressors when used for space heating and/or cooling, and/or for process, as described in the prEN 14511 series, and dehumidifiers, as described in EN 810.
This document also covers the measurement of the sound power level of evaporatively cooled condenser air conditioners, as defined in EN 15218. However, the measurement will be done without external water feeding and these units will thus be considered as the other air conditioners covered by the prEN 14511 series.
It is emphasized that this measurement standard only refers to airborne noise.

This document is applicable to air conditioners, heat pumps and liquid chilling packages, including comfort and process chillers. It applies to factory made units defined in EN 14511-1, except single duct, double duct, control cabinet and close control units. It also covers direct exchange-to-water(brine) heat pumps (DX-to-water(brine)) as defined in EN 15879-1.
This document also applies to hybrid units as defined in this standard.
This document specifies the temperatures, part load conditions and the calculation methods for the determination of seasonal energy efficiency SEER and SEERon, seasonal space cooling energy efficiency ηs,c, seasonal coefficient of performance SCOP, SCOPon and SCOPnet, seasonal space heating energy efficiency ηs,h and seasonal energy performance ratio SEPR.
Such calculation methods can be based on calculated or measured values.
In case of measured values, this document specifies the test methods for determination of capacities, EER and COP values during active mode at part load conditions. It also establishes test methods for power input during thermostat-off mode, standby mode, off mode and crankcase heater mode.
NOTE 1   The word "unit" is used instead of the full terms of the products.
NOTE 2   The word "heating" is used to refer to space heating.

This European Standard specifies the terminology, the general requirements for the construction and operation of forced draught oil burners and also the provision of control and safety devices, and the test procedure for these burners.
This European Standard applies to forced draught oil burners supplied with:
-   fuel based on first raffinates and their mixtures with biogenous liquid fuels having a viscosity at the burner inlet of 1,6 mm2/s (cSt) up to 6 mm2/s (cSt) at 20 °C, and
-   higher boiling petroleum based first raffinates (viscosity greater than 6 mm2/s), that require preheating for proper atomization.
This European Standard is applicable to:
-   single burners fitted to a single combustion chamber;
-   single burners fitted to an appliance with additional requirements;
NOTE   When additional requirements apply which are not identified or specified in this standard, the specification of the required safety measures and/or protective devices and compliance with them is outside the scope of this standard.
-   single-fuel and dual-fuel burners when operating on oil only;
-   the oil function of dual-fuel burners designed to operate simultaneously on gaseous and liquid fuels.
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 also deals with the additional requirements for the burners in the scope with pressurized parts and/or firing pressurized bodies, see Annex K.
This European Standard specifies the requirements to ensure the safety during commissioning, start-up, operation, shut-down and maintenance.
This European Standard deals also with forced draught burners intended to be used with biogenous liquid fuels, mixtures.
This European Standard deals also with burners and their equipment to increase the total appliance efficiency, see Annex M.

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.

This European Standard specifies methods for testing, rating of performance and calculation of water heating energy efficiency of air/water, brine/water, water/water and direct exchange/water heat pump water heaters and heat pump combination heaters with electrically driven compressors and connected to or including a domestic hot water storage tank for domestic hot water production.
This European Standard comprises only the testing procedure for the domestic hot water production of the heat pump system.
NOTE 1   Testing procedures for simultaneous operation for domestic hot water production and space heating are not treated in this standard. Simultaneous means that domestic hot water production and space heating generation occur at the same time and may interact.
NOTE 2   For heat pump combination heaters the seasonal efficiency of space heating is determined according to EN 14825.
This European Standard only applies to water heaters which are supplied in a package of heat pump and storage tank. In the case of water heaters consisting of several parts with refrigerant connections, this European Standard applies only to those designed and supplied as a complete package.
This European Standard does not specify requirements of the quality of the used water.

This part of EN 16905 specifies the calculation of the seasonal performance factor for gas-fired endothermic engine driven heat pumps for heating and/or cooling mode including the engine heat recovery, to be used outdoors.
This document only applies to appliances with a maximum heat input (based on net calorific value) not exceeding 70 kW at standard rating conditions.
This document only applies to appliances under categories I2H, I2E, I2Er, I2R, I2E(S)B, I2L, I2LL, I2ELL, I2E(R)B, I2ESi, I2E(R), I3P, I3B, I3B/P, II2H3+, II2Er3+, II2H3B/P, II2L3B/P, II2E3B/P, II2ELL3B/P, II2L3P, II2H3P, II2E3P and II2Er3P according to EN 437:2021.
This document only applies to appliances having:
a)   gas fired endothermic engines under the control of fully automatic control systems;
b)   closed system refrigerant circuits in which the refrigerant does not come into direct contact with the fluid to be cooled or heated;
c)   where the temperature of the heat transfer fluid of the heating system (heating water circuit) does not exceed 105 °C during normal operation;
d)   where the maximum operating pressure in the:
1)   heating water circuit (if installed) does not exceed 6 bar,
2)   domestic hot water circuit (if installed) does not exceed 10 bar.
This document applies to GEHP appliances only when used for space heating or space cooling or for refrigeration, with or without heat recovery.
This document is applicable to GEHP appliances that are intended to be type tested. Requirements for GEHP appliances that are not type tested would need to be subject to further consideration.

This European Standard specifies methods for testing, rating of performance and calculation of water heating energy efficiency of air/water, brine/water, water/water and direct exchange/water heat pump water heaters and heat pump combination heaters with electrically driven compressors and connected to or including a domestic hot water storage tank for domestic hot water production.
This European Standard comprises only the testing procedure for the domestic hot water production of the heat pump system.
NOTE 1   Testing procedures for simultaneous operation for domestic hot water production and space heating are not treated in this standard. Simultaneous means that domestic hot water production and space heating generation occur at the same time and may interact.
NOTE 2   For heat pump combination heaters the seasonal efficiency of space heating is determined according to EN 14825.
This European Standard only applies to water heaters which are supplied in a package of heat pump and storage tank. In the case of water heaters consisting of several parts with refrigerant connections, this European Standard applies only to those designed and supplied as a complete package.
This European Standard does not specify requirements of the quality of the used water.

2019-01-10 AJC: Document uploaded to HAS platform for FV stage following failed original upload. New HAS deadline: 2019-02-14. Following reception of results, document will progress.
2017-07-17 CP: negative assessment recived - UAP cancelled
2021: CLC legacy converted by DCLab NISOSTS

Sorption heat pumps connected to or including a domestic hot water storage tank. It applies to a package marketed as single unit or fully specified that have:
— a heat input not exceeding 400 kW; and
— a hot water storage tank capacity (if any) not exceeding 2000 l.
In the case of combination boilers, with or without storage tank, domestic hot water production is integrated or coupled, the whole being marketed as a single unit.
EN 13203-1 sets out in qualitative and quantitative terms the performance in delivery of domestic hot water for a selected variety of uses. It also gives a system for presenting the information to the user. The present document sets out a method for assessing the energy performance of the appliances. It defines a number of daily load profiles for each domestic hot water use, kitchen, shower, bath and a combination of these, together with corresponding test procedures, enabling the energy performances of different gas-fired appliances to be compared and matched to the needs of the user. Where other technologies are combined with a gas-fired boiler or a water heater to produce domestic hot water, specific parts of EN 13203 apply.
Horizontal ground heat sources are not covered by the scope of the present European Standard.

This document is applicable to gas-fired appliances producing domestic hot water.
It applies to both instantaneous and storage tank appliances; waters-heaters and combination boilers that have:
— a heat input not exceeding 400 kW; and
— a hot water storage tank capacity (if any) not exceeding 2000 l.
In the case of combination boilers, with or without storage tank, domestic hot water production is integrated or coupled, the whole being marketed as a single unit.
The water heaters covered by the present standard are considered "conventional water heaters" as defined by the Transitional Methods (Commission Communication 2014/C 207/03) then in the calculation formula for the Annual Electricity Consumption (AEC), Qcor is equal to zero.
EN 13203-1 sets out in qualitative and quantitative terms the performance in delivery of domestic hot water for a selected variety of uses. It also gives a system for presenting the information to the user. The present document sets out a method for assessing the energy performance of the appliances. It defines a number of daily load profiles for each domestic hot water use, kitchen, shower, bath and a combination of these, together with corresponding test procedures, enabling the energy performances of different gas-fired appliances to be compared and matched to the needs of the user. Where other technologies are combined with a gas-fired boiler or a water heater to produce domestic hot water, specific parts of EN 13203 apply.

This document is applicable to solar supported gas-fired appliances producing domestic hot water.
It applies to a system marketed as single unit or a fully specified system that:
- has a gas heat input not exceeding 70 kW; and
- has a hot water storage tank capacity not exceeding 500 l; and
- is equipped with at least one solar collector; and
- is, with regard to the solar hydraulic circuit, considered as a forced circulation system (definition according to EN ISO 9488:1999).
The appliances covered by this European Standard are described in Annex E (normative).
This document does not apply to thermo-siphon or integral collector storage tank systems according to definitions given by EN ISO 9488:1999.
NOTE In principle, the energy consumption of thermo-siphon solar preheat systems and integral collector storage tank preheat systems can also be assessed on the basis of this standard. One appropriate procedure for that purpose is to calculate the temperature level of the domestic hot water withdrawn from the thermal solar system for the reference conditions defined in this standard by using the numerical system model and the thermal solar system performance parameters according to ISO 9459-5. Based on the temperature level of the hot water withdrawn from the store the energy consumption of the gas appliance should be determined. This determination can either be done by means of calculations or by performing a test according to FprEN 13203-2:2020 and using instead of the cold water inlet temperature the hot water temperature withdrawn from the store.
This document is not intended to assess the performance:
- of the solar collector(s), which should comply with EN 12975-1:+A1:2010 and EN 12975-2:2006; and - thermal solar systems and components, which should comply with EN 12976-1:2017 and EN 12976- 2:2019.
Standard EN 13203-1:2015 sets out in qualitative and quantitative terms the performance in delivery of domestic hot water for a selected variety of uses. It also gives a presenting the information to the user. The present document sets out a method for assessing the energy performance of a solar supported appliance. It defines a number of daily tapping cycles for each domestic hot water use, kitchen, shower, bath and a combination of these, together with corresponding test procedures including information about the available solar radiation. It enables the energy performances of different gas-fired appliances to be compared and matched to the needs of the user.

This European Standard is applicable to gas-fired mCHP appliances producing domestic hot water and electricity. The electricity is generated in a process linked to the production of useful heat. It applies to a mCHP appliances marketed as single unit or as a package fully specified by a manufacturer that have:
— a gas heat input not exceeding 400 kW;
— an electrical output not exceeding 50 kW and
— a hot water storage capacity (if any) not exceeding 2000 l.
prEN 13203-1:20xx sets out in qualitative and quantitative terms the performance in delivery of domestic hot water for a variety of uses. It also gives a system for presenting the information to the user.
The present document sets out a method for assessing the energy performance of gas fired mCHP appliances. It defines a number of daily tapping cycles for each domestic hot water use, kitchen, shower, bath and a combination of these, together with corresponding test procedures, enabling the energy performances of different gas-fired appliances to be compared and matched to the needs of the user.
When the mCHP generator does not supply domestic hot water in the summer period, the present standard is not applicable. PrEN 13203-2:2020 is used for performance assessment of these generators.

This European Standard is applicable to gas-fired appliances producing domestic hot water. It applies to
condensing combination boilers with passive flue heat recovery device (PFHRD) that have:
— a heat input not exceeding 400 kW,
— a hot water storage tank capacity (if any) not exceeding 2000 l,
— a declared load profile between M to 4XL.
In the case of combination boilers, with or without storage tank, domestic hot water production is integrated
or coupled, the whole being marketed as a single unit.
For this standard, some tests and calculation results of FprEN 13203-2:2018 are used to calculate the energy consumptions.

This document is applicable to gas-fired mCHP appliances producing domestic hot water and electricity. The electricity is generated in a process linked to the production of useful heat.
It applies to a mCHP appliances marketed as single unit or as a package fully specified by a manufacturer that have:
-   a gas heat input not exceeding 400 kW,
-   an electrical output not exceeding 50 kW, and
-   a hot water storage capacity (if any) not exceeding 2 000 l.
EN 13203 1:2015 sets out in qualitative and quantitative terms the performance in delivery of domestic hot water for a variety of uses. It also gives a system for presenting the information to the user.
The present document sets out a method for assessing the energy performance of gas fired mCHP appliances. It defines a number of daily tapping cycles for each domestic hot water use, kitchen, shower, bath and a combination of these, together with corresponding test procedures, enabling the energy performances of different gas-fired appliances to be compared and matched to the needs of the user.
When the mCHP generator does not supply domestic hot water in the summer period, the present standard is not applicable. FprEN 13203 2:2018 is used for performance assessment of these generators.

This European Standard establishes requirements for determining, in accordance with a standardized procedure, the sound power level emitted into the surrounding air by air conditioners, heat pumps, liquid chilling packages with electrically driven compressors when used for space heating and/or cooling, and/or for process, as described in the EN 14511 series and dehumidifiers as described in EN 810.
This European Standard also covers the measurement of the sound power level of evaporatively cooled condenser air conditioners, as defined in EN 15218. However, the measurement will be done without external water feeding and these units will thus be considered as the other air conditioners covered by the EN 14511 series.
It is emphasized that this measurement standard only refers to airborne noise.

This European Standard covers air conditioners, heat pumps and liquid chilling packages, including comfort and process chillers. It applies to factory made units defined in EN 14511-1, except single duct, double duct, control cabinet and close control units. It also covers direct expansion-to-water(brine) heat pumps (DX-to-water) as defined in EN 15879-1.
This European Standard also covers hybrid heat pumps as defined in this standard.
This European Standard gives the temperatures and part load conditions and the calculation methods for the determination of seasonal energy efficiency SEER and SEERon, seasonal space cooling energy efficiency ηs,c seasonal coefficient of performance SCOP, SCOPon and SCOPnet, and seasonal space heating energy efficiency ηs,h and seasonal energy performance ratio SEPR.
Such calculation methods may be based on calculated or measured values.
In case of measured values, this European Standard covers the test methods for determination of capacities, EER and COP values during active mode at part load conditions. It also covers test methods for electric power consumption during thermostat-off mode, standby mode, off-mode and crankcase heater mode.
NOTE 1 The word "unit" is used instead of the full terms of the products.
NOTE 2 The word "cooling" is used to refer to both space cooling and process cooling.
NOTE 3 The word "heating" is used to refer to space heating.

This document is applicable to gas-fired appliances producing domestic hot water. It applies to sorption heat pumps connected to or including a domestic hot water storage tank. It applies to a package marketed as single unit or fully specified that have:
-   a heat input not exceeding 400 kW;
-   a hot water storage tank capacity (if any) not exceeding 2 000 l.
In the case of gas-fired sorption heat pumps, with or without storage tank, domestic hot water production is integrated or coupled, the whole being marketed as a single unit.
EN 13203-1:2015 sets out in qualitative and quantitative terms the performance in delivery of domestic hot water for a selected variety of uses. It also gives a system for presenting the information to the user. The present document sets out a method for assessing the energy performance of the appliances. It specifies a number of daily load profiles for each domestic hot water use, kitchen, shower, bath and a combination of these, together with corresponding test procedures, enabling the energy performances of different gas-fired appliances to be compared and matched to the needs of the user. Where other technologies are combined with a gas-fired sorption heat to produce domestic hot water, specific parts of EN 13203 apply.
Horizontal ground heat sources are not covered by the scope of the present document.

This document is applicable to gas-fired appliances producing domestic hot water. It applies to condensing combination boilers with passive flue heat recovery device (PFHRD) that have:
-   a heat input not exceeding 400 kW;
-   a hot water storage tank capacity (if any) not exceeding 2 000 l;
-   a declared load profile between M to 4XL.
In the case of combination boilers, with or without storage tank, domestic hot water production is integrated or coupled, the whole being marketed as a single unit.
For this document, some tests and calculation results of EN 13203-2:2022 are used to calculate the energy consumptions.

This document is applicable to gas-fired appliances producing domestic hot water. It applies to both instantaneous and storage tank appliances; waters-heaters and combination boilers that have:
-   a heat input not exceeding 400 kW;
-   a hot water storage tank capacity (if any) not exceeding 2 000 l.
In the case of combination boilers, with or without storage tank, domestic hot water production is integrated or coupled, the whole being marketed as a single unit.
The water heaters covered by the present standard are considered "conventional water heaters" as defined by the Transitional Methods (Commission Communication 2014/C 207/03) then in the calculation formula for the Annual Electricity Consumption (AEC), Qcor is equal to zero.
In case of the boiler is equipped with an internal or external Passive Flue Heat Recovery Device (PFHRD), the boiler efficiency can be assessed by applying EN 13203-2:2022 in combination with EN 13203-7:2022. In case of a PFHRD, where the technology has the ability to recover energy out of flue gasses during central heating production to be able to preheat the domestic hot water (indirect contribution), to assess this indirect contribution EN 13203-7:2022 applies. EN 13203-2:2022 is applicable for measuring and calculating the direct efficiency (direct contribution) while combining the measuring results of EN 13203-7:2022 the overall efficiency (direct and indirect) can be calculated. EN 13203-1:2015 sets out in qualitative and quantitative terms the performance in delivery of domestic hot water for a selected variety of uses. It also gives a system for presenting the information to the user. The present document sets out a method for assessing the energy performance of the appliances. It specifies a few daily load profiles for each domestic hot water use, kitchen, shower, bath and a combination of these, together with corresponding test procedures, enabling the energy performances of different gas-fired appliances to be compared and matched to the needs of the user. Where other technologies are combined with a gas-fired boiler or a water heater to produce domestic hot water, specific parts of EN 13203 apply.

This document is applicable to solar supported gas-fired appliances producing domestic hot water. It applies to a system marketed as single unit or a fully specified system that:
-   has a gas heat input not exceeding 70 kW;
-   has a hot water storage tank capacity not exceeding 500 l;
-   is equipped with at least one solar collector;
-   is, with regard to the solar hydraulic circuit, considered as a forced circulation system (definition according to EN ISO 9488:1999).
The appliances covered by this document are described in Annex E (normative).
This document does not apply to thermo-siphon or integral collector storage tank systems according to definitions given by EN ISO 9488:1999.
NOTE   In principle, the energy consumption of thermo-siphon solar preheat systems and integral collector storage tank preheat systems can also be assessed based on this document. One appropriate procedure for that purpose is to calculate the temperature level of the domestic hot water withdrawn from the thermal solar system for the reference conditions specified in this standard by using the numerical system model and the thermal solar system performance parameters according to ISO 9459-5. Based on the temperature level of the hot water withdrawn from the store the energy consumption of the gas appliance is determined. This determination can either be done by means of calculations or by performing a test according to EN 13203 2:2022 and using instead of the cold water inlet temperature the hot water temperature withdrawn from the store.
This document is not intended to assess the performance:
-   of the solar collector(s), which should comply with EN 12975-1:2006+A1:2010 and EN 12975-2:2006;
-   of thermal solar systems and components, which should comply with EN 12976-1:2021 and EN 12976-2:2019.
EN 13203-1:2015 sets out in qualitative and quantitative terms the performance in delivery of domestic hot water for a selected variety of uses. It also gives a presenting the information to the user.
The present document sets out a method for assessing the energy performance of a solar supported appliance. It specifies a few daily tapping cycles for each domestic hot water use, kitchen, shower, bath and a combination of these, together with corresponding test procedures including information about the available solar radiation. It enables the energy performances of different gas-fired appliances to be compared and matched to the needs of the user.

This document is applicable to gas-fired appliances producing domestic hot water. It applies to both instantaneous and storage gas-fired combined with electric heat pump.
It applies to a package marketed as single unit or fully specified by the manufacturer that have:
-   a heat input not exceeding 400 kW;
-   a hot water storage tank capacity (if any) not exceeding 2 000 l.
EN 13203-1:2015 sets out in qualitative and quantitative terms the performance in delivery of domestic hot water for a selected variety of uses. It also gives a system for presenting the information to the user. The present document sets out a method for assessing the energy performance of gas fired appliances combined with heat pump with electrically driven compressor according to EN 16147. It specifies a number of daily load profiles for each domestic hot water use, kitchen, shower, bath and a combination of these, together with corresponding test procedures, enabling the energy performances of different gas-fired appliances to be compared and matched to the needs of the user. Where other technologies are combined with a gas-fired boiler or a water heater to produce domestic hot water, specific parts of EN 13203 apply.
The present document does not apply for gas boilers with recovery systems using combustion products as heat source for the electrical heat pump.
When the electrical heat pump does not work for domestic hot water production in the summer period, the present standard is not applicable for energy performances assessing, instead EN 13203-2:2022 is applicable.

This document is applicable to gas-fired mCHP appliances producing domestic hot water and electricity. The electricity is generated in a process linked to the production of useful heat.
It applies to a mCHP appliances marketed as single unit or as a package fully specified by a manufacturer that have:
-   a gas heat input not exceeding 400 kW;
-   an electrical output not exceeding 50 kW;
-   a hot water storage capacity (if any) not exceeding 2 000 l.
EN 13203-1:2015 sets out in qualitative and quantitative terms the performance in delivery of domestic hot water for a variety of uses. It also gives a system for presenting the information to the user.
The present document sets out a method for assessing the energy performance of gas fired mCHP appliances. It defines several daily tapping cycles for each domestic hot water use, kitchen, shower, bath and a combination of these, together with corresponding test procedures, enabling the energy performances of different gas-fired appliances to be compared and matched to the needs of the user.
When the mCHP generator does not supply domestic hot water in the summer period, the present standard is not applicable. EN 13203-2:2022 is used for performance assessment of these generators.

This document is applicable to all types of fluid heating solar collectors. This European Standard specifies performance requirements for fluid heating solar collectors with respect to durability, reliability, safety and thermal performance. This European Standard includes provisions for the assessment and verification of constancy of performance to these requirements.
This document deals with the collector module and not with assemblies. This document is not applicable to those devices in which a thermal storage unit is an integral part to such an extent that the collection process cannot be separated from the storage process for making the collector thermal performance measurements.

This document is applicable to all types of fluid heating solar collectors. This document specifies performance requirements for fluid heating solar collectors with respect to durability, reliability, safety and thermal performance.
This document deals with the solar collector and not with assemblies. This document is not applicable to those devices in which a thermal storage unit is an integral part to such an extent that the collection process cannot be separated from the storage process for making the collector thermal performance measurements.

This part of prEN 16905 specifies the safety requirements, the safety test conditions and the safety test methods of gas-fired endothermic engine driven heat pumps for heating and/or cooling mode including the engine heat recovery, to be used outdoors.
This document specifies minimum operating requirements which ensure that the products are fit for the use designated by the manufacturer when used for space heating and/or cooling.
This document is to be used in conjunction with:
a)   the terms and conditions, EN 16905-1:2017;
b)   the test conditions, EN 16905-3:2017;
c)   the test methods, prEN 16905-4:2022;
d)   the calculation of seasonal performances in heating and cooling mode, FprEN 16905-5:2022;
e)   the heat pump, EN 14511-4:2022, EN 378-1:2016+A1:2020, EN 378-2:2016, EN 378 3:2016+A1:2020, EN 378-4:2016+A1:2019 and EN 14825:2018;
f)   electrical safety, EN 60335-1:2012, EN 60335-2-102:2016, EN 60335-2-40:2003 and EN 60204-1:2018.
This document only applies to GEHP appliances with a maximum heat input (based on net calorific value) not exceeding 70 kW at standard rating conditions.
This document only applies to GEHP appliances under categories I2H, I2E, I2Er, I2R, I2E(S)B, I2L, I2LL, I2ELL, I2E(R)B, I2ESi, I2E(R), I3P, I3B, I3B/P, II2H3+, II2Er3+, II2H3B/P, II2L3B/P, II2E3B/P, II2ELL3B/P, II2L3P, II2H3P, II2E3P and II2Er3P according to EN 437:2021.
This document only applies to GEHP appliances:
g)   that have gas fired endothermic engines under the control of fully automatic control systems;
h)   that have closed system refrigerant circuits in which the refrigerant does not come into direct contact with the fluid to be cooled or heated;
i)   where the temperature of the heat transfer fluid of the heating system (heating water circuit) does not exceed 105 °C during normal operation;
j)   where the maximum operating pressure in the:
1)   heating water circuit (if installed) does not exceed 6 bar;
2)   domestic hot water circuit (if installed) does not exceed 10 bar.
This document is applicable to GEHP appliances only when used for space heating or space cooling or for refrigeration, with or without heat recovery.
This document is applicable to GEHP appliances that are intended to be type tested. Requirements for GEHP appliances that are not type tested would need to be subject to further consideration.

This document specifies a method for the energy assessment of domestic/sanitary hot water storage tanks of up to 2 000 l.
Whilst this document does not cover water heaters intended primarily for direct heating, it does allow the provision of electric heating elements for auxiliary use.
Primary heating buffer tanks are not covered by this document. Heat losses of domestic hot water storage tanks integrated into combi boilers marketed as a single unit are not covered by this document.

This European Standard specifies the terminology, the general requirements for the construction and operation of forced draught oil burners and also the provision of control and safety devices, and the test procedure for these burners.
This European Standard applies to forced draught oil burners supplied with:
― fuel based on first raffinates and their mixtures with biogenous liquid fuels having a viscosity at the burner inlet of 1,6 mm2/s (cSt) up to 6 mm2/s (cSt) at 20 °C; and
― higher boiling petroleum based first raffinates (viscosity greater than 6 mm2/s), that require preheating for proper atomization.
This European Standard is applicable to:
― single burners fitted to a single combustion chamber;
― single burners fitted to an appliance with additional requirements;
NOTE When additional requirements apply which are not identified or specified in this standard, the specification of the required safety measures and/or protective devices and compliance with them is outside the scope of this standard.
― single-fuel and dual-fuel burners when operating on oil only;
― the oil function of dual-fuel burners designed to operate simultaneously on gaseous and liquid fuels.
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 also deals with the additional requirements for the burners in the scope with pressurized parts and/or firing pressurized bodies, see Annex K.
This European Standard specifies the requirements to ensure the safety during commissioning, start-up, operation, shut-down and maintenance.
This European Standard deals also with forced draught burners intended to be used with biogenous liquid fuels, mixtures.
This European Standard deals also with burners equipment to increase the total appliance efficiency; see Annex M.

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.

1.1   Scope of prEN 16905
This European Standard specifies the requirements, test methods and test conditions for the rating and performance calculation of air conditioners and heat pumps using either air, water or brine as heat transfer media, with gas-fired endothermic engine driven compressors when used for space heating, cooling and refrigeration, hereafter referred to as "GEHP appliance".
This European Standard only applies to GEHP appliances with a maximum heat input (based on net calorific value) not exceeding 70 kW at standard rating conditions.
This standard only applies to GEHP appliances under categories I2H, I2E, I2Er, I2R, I2E(S)B, I2L, I2LL, I2ELL, I2E(R)B, I2ESi, I2E(R), I3P, I3B, I3B/P, II2H3+, II2Er3+, II2H3B/P, II2L3B/P, II2E3B/P, II2ELL3B/P, II2L3P, II2H3P, II2E3P and II2Er3P according to EN 437:2003+A1:2009.
This standard only applies to GEHP appliances having:
a)   gas fired endothermic engines under the control of fully automatic control systems;
b)   closed system refrigerant circuits in which the refrigerant does not come into direct contact with the fluid to be cooled or heated;
c)   where the temperature of the heat transfer fluid of the heating system (heating water circuit) does not exceed 105 ºC during normal operation;
d)   where the maximum operating pressure in the
1)   heating water circuit (if installed) does not exceed 6 bar
2)   domestic hot water circuit (if installed) does not exceed 10 bar.
This European Standard applies to GEHP appliances only when used for space heating or space cooling or for refrigeration, with or without heat recovery.
The GEHP appliances having their condenser cooled by air and by the evaporation of external additional water are not covered by this European Standard.
Packaged units, single split and multisplit systems are covered by this European Standard. Single duct and double duct units are covered by this European Standard.
The above GEHP appliances can have one or more primary or secondary functions.
This European Standard is applicable to GEHP appliances that are intended to be type tested. Requirements for GEHP appliances that are not type tested would need to be subject to further consideration.
In the case of packaged units (consisting of several parts), the standard applies only to those designed and supplied as a complete package.
NOTE   All the symbols given in this text are used regardless of the language used.
1.2   Scope of prEN 16905-2
This part of prEN 16905 specifies the safety requirements, the safety test conditions and the safety test methods of gas-fired endothermic engine driven heat pumps for heating and/or cooling mode including the engine heat recovery.

This document is composed of two parts.
The first part supplements EN 303-1, EN 303-2, EN 303-4 and EN 304, hereafter called boiler standards. It specifies the supplementary requirements and tests for the construction, safety, rational use of energy, fitness for purpose, classification and marking related to the domestic hot water operation of oil-fired water heaters and combination boilers.
The domestic hot water is produced on either the instantaneous or storage principle. The domestic hot water production is integrated or coupled, the whole being marketed as a single unit.
The second part covers the energy performance of domestic hot water production of the appliances covered by the first part.
This second part sets out a method for assessing the energy performance of the appliances. It defines a number of daily tapping cycles for each domestic hot water use such as kitchen, shower, bath and a combination of these, together with corresponding test procedures, enabling the energy performances of combination boilers and water heaters to be compared and matched to the needs of the user.
The heat output of the appliances covered by this standard does not exceed 400 kW.
In the case of combination boilers, with or without storage tank, domestic hot water production is integrated or coupled, the whole being marketed as a single unit.
This standard only covers type testing.

This European Standard specifies a method for energy assessment of un-vented (closed) hot water storage tanks with a capacity up to 1 500 l, intended to be equipped with an external heat source and used for domestic hot water production. Whilst storage water heaters intended primarily for direct heating are not covered by this European Standard, it does allow the provision of electric heating elements for auxiliary use.

This European Standard specifies the requirements and test methods for the construction, safety, fitness
for purpose, rational use of energy and the marking of a micro combined heat and power appliance;
(hereafter referred to as “mCHP appliance”).
This European Standard applies to mCHP appliances of types B22, B23, B32, B33, B52, B53, C1, C3, C42, C43
C52, C53, C62, C63, C82, C83 and C9 based on the classifications of CEN/TR 1749:
– that use one or more supplied gases of the three gas families at the pressures stated in EN 437,
– where the temperature of the heat transfer fluid of the heating system (heating water circuit) does
not exceed 105 ºC during normal operation,
– where the maximum operating pressure in the
- heating water circuit does not exceed 6 bar,
- domestic hot water circuit (if installed) does not exceed 10 bar,
– which are either intended to be installed indoors or outdoors in a partially protected place,
– which are intended to produce hot water either by the instantaneous or storage principle,
– which have a maximum heat input (based on net calorific value) not exceeding 70 kW,
– which are designed for sealed or open water systems.
NOTE 1 For applications where the maximum allowable water temperature exceeds 110 ºC or where volume multiplied by
maximum allowable pressure exceeds 50 bar litres, further requirements may be necessary to comply with the essential
requirements of Directive 97/23/EC (Pressure Equipment Directive (PED)).
NOTE 2 For mCHP appliances with constructions that might not be fully covered by this European Standard or by another specific
standard, the risk associated with the alternative construction will be assessed.
NOTE 3 prEN 13203-4 will specify the assessment of energy consumption for domestic hot water production of gas combined
heat and power appliances (mCHP).
This European Standard does not contain the requirements necessary for appliance capable of producing
electrical energy without using the thermal energy.
This European Standard does not cover all the requirements for mCHP appliances that are intended to be
connected to gas grids where the quality of the distributed gas is likely to vary to a large extent over the
lifetime of the appliance (see Annex DD).

This European Standard is composed of two parts.
The first part supplements EN 303 1, EN 303 2, EN 303 4 and EN 304 hereafter called boiler standards. It specifies the supplementary requirements and tests for the construction, safety, rational use of energy, fitness for purpose, classification and marking related to the domestic hot water operation of oil fired water heaters and combination boilers.
The domestic hot water is produced on either the instantaneous or storage principle. The domestic hot water production is integrated or coupled, the whole being marketed as a single unit.
The second part covers the energy performance of domestic hot water production of the appliances covered by the first part.
This second part sets out a method for assessing the energy performance of the appliances. It defines a number of daily tapping cycles for each domestic hot water use such as kitchen, shower, bath and a combination of these, together with corresponding test procedures, enabling the energy performances of combination boilers and water heaters to be compared and matched to the needs of the user.
The heat output of the appliances covered by this standard does not exceed 400 kW.
In the case of combination boilers, with or without storage tank, domestic hot water production is integrated or coupled, the whole being marketed as a single unit.
This standard only covers type testing.

This European Standard specifies test methods for the performance characterization of stores which are intended for use in small custom built systems as specified in EN 12977-1.
Stores tested according to this document are commonly used in solar combisystems. However, the thermal performance of all other thermal stores with water as a storage medium (e.g. for heat pump systems) can be also assessed according to the test methods specified in this document.
This document applies to combistores with a nominal volume up to 3 000 l and without integrated burner.
NOTE   This document is extensively based on references to EN 12977-3:2012.

This European Standard specifies test methods for the performance characterization of stores which are intended for use in small custom built systems as specified in EN 12977-1.
Stores tested according to this document are commonly used in solar combisystems. However, the thermal performance of all other thermal stores with water as a storage medium (e.g. for heat pump systems) can be also assessed according to the test methods specified in this document.
This document applies to combistores with a nominal volume up to 3 000 l and without integrated burner.
NOTE   This document is extensively based on references to EN 12977-3:2012.

This European Standard applies to the determination of the performances of heating boilers and combi boilers fired by liquid fuels. The requirements for the heating performances are laid down in EN 303 1:2016 and EN 303 2:2016.
This test code includes the requirements and recommendations for carrying out and evaluating the procedure for testing boilers and also the details of the technical conditions under which the tests will be carried out.
The requirements and the performance of testing for the sanitary hot water production of combi boilers are laid down in EN 303 6.

This European Standard applies to boilers used for central heating (heating boilers) with forced draught burners with a nominal heat output not exceeding 1 000 kW, which are operated either with negative pressure (natural draught boilers) or with positive pressure (pressurized boiler) in the combustion chamber, in accordance with the boiler instructions.
This European Standard specifies the necessary terminology, the requirements on the materials and testing of them, and marking requirements for heating boilers.
Particular requirements for boilers that can be used with open vented systems are contained in EN 303 4.
The requirements of this standard apply to heating boilers that are tested on an authorized test rig.
Boilers in accordance with this standard are designed for the heating of central heating installations in which the heat carrier is water, and the maximum allowable operating temperature of which is restricted to 100 °C. The maximum allowable operating pressure is 8 bar.
For boilers and water heaters (storage or continuous flow heater) this standard only applies to the parts which are necessarily subject to the operating conditions of the heating boiler (heating part).
This standard does not apply to gas boilers with atmospheric burners, boilers for solid fuels, boilers with oil vaporization burners. For these boilers there are further requirements.

This European Standard is applicable to boilers used for central heating in accordance with prEN 303 1:2016 up to a nominal heat output of 1 000 kW and EN 303 4 up to a nominal heat output of 70 kW with forced draught burners in accordance with EN 267 that are designed for operating with liquid fuels.
The performance requirements of this standard apply to type testing to heating boilers (standard, low temperature and condensing boilers) which are tested on a test rig in accordance with the test code given in EN 304.
This standard applies also to room sealed boilers as defined in EN 15035 regarding efficiency and emissions.
This standard can also be used as the basis for evaluation of boiler-/burner units.

The test code applies to the determination of the perfomances of  heating boilers combi boilers and water heaters fired by liquid fuels. The requirements are laid down in EN 303-1 and EN 303-2.
This code includesthe requirements and recommendations for carrying out and evaluating the procedure for testing boilers and also the details of the technical conditions under which the tests shall be carried out.

This European Standard applies to standard boilers and low temperature boilers with forced draught burners with a nominal heat output not exceeding 1 000 kW, which are operated either with negative pressure (natural draught boilers) or with positive pressure (pressurised boiler) in the combustion chamber, in accordance with the boiler manufacturer’s instruction.
This standard specifies the necessary terminology, the requirements on the materials and testing of them, and marking requirements for heating boilers.
Particular requirements for boilers which can be used with open vented systems are contained in EN 303 4.
The requirements of this standard apply to heating boilers which are tested on an authorised test rig.
Boilers in accordance with this standard are designed for the heating of central heating installations in which the heat carrier is water, and the maximum allowable operating temperature of which is restricted to 100 °C. The maximum allowable operating pressure is 8 bar.
For boilers with a built in or attached water heater (storage or continuous flow heater) this standard only applies to the parts of the water heater which are necessarily subject to the operating conditions of the heating boiler (heating part).
This standard does not apply to gas boilers with atmospheric burners, boilers for solid fuels, oil or gas fired condensing boilers and boilers with oil vaporisation burners. For these boilers there are further requirements.

This standard is applicable to heating boilers in accordance with EN 303-1 up to a nominal heat output of 1 000 kW and EN 303-4 up to a nominal heat output of 70 kW with atomizing oil burners  in accordance with EN 267 which are designed for operating with liquid fuels.
This European Standard applies to low temperature boilers in accordance with EN 303 1/A1 and specifies the heating related requirements necessary for liquid fuels for low temperature boilers and the required additional duration test for oil fired low temperature boilers.
The performance requirements of this standard apply to type testing to heating boilers (standard, low temperature and condensing boilers) which are tested on a test rig in accordance with the test code given in EN 304.
This standard applies also to room sealed boilers as defined in EN 15035 regarding efficiency and emissions.
This standard specifies the necessary heating technical requirements for heating boilers with liquid fuels.
NOTE   This Standard can also be used as the basis for evaluation of package boiler /burner units.