SIST EN 778:1999/A1:2002
(Amendment)Domestic gas-fired forced convection air heaters for space heating not exceeding a net heat input of 70 kW, without a fan to assist transportation of combustion air and/or combustion products
- BACK
- 31-Mar-2002
- 19-Jan-2010
- 97.100.20
- 90/396/EEC
- M/BC/CEN/89/6
- PLN
Domestic gas-fired forced convection air heaters for space heating not exceeding a net heat input of 70 kW, without a fan to assist transportation of combustion air and/or combustion products
Migrated from Progress Sheet (TC Comment) (2000-07-10): A-deviation asked to CEN/TC 179. TC must confirmed.
Gasbefeuerte Warmlufterzeuger mit erzwungener Konvektion zum Beheizen von Räumen für den häuslichen Gebrauch mit einer Nennwärmebelastung nicht über 70 kW, ohne Gebläse zur Beförderung der Verbrennungsluft und/oder der Abgase
Générateurs d'air chaud a convection forcée utilisant les combustibles gazeux pour le chauffage de locaux a usage d'habitation de débit calorifique sur Hi, inférieur ou égal a 70 kW, sans ventilateur pour aider l'alimentation en air comburant et/ou l'évacuation des produits de combustion
Gospodinjski plinski grelniki zraka s prisilno konvekcijo za ogrevanje prostorov, z imensko močjo do vključno 70 kW, brez ventilatorja za zgorevalni zrak in/ali produkte zgorevanja - Dopolnilo A1
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Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 778:1999/A1:2002
01-april-2002
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Domestic gas-fired forced convection air heaters for space heating not exceeding a net
heat input of 70 kW, without a fan to assist transportation of combustion air and/or
combustion products
Gasbefeuerte Warmlufterzeuger mit erzwungener Konvektion zum Beheizen von
Räumen für den häuslichen Gebrauch mit einer Nennwärmebelastung nicht über 70 kW,
ohne Geblä
...
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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.
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a) that use one or more combustible gases of the three gas families at the pressures stated in EN 437;
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This document is to be used in conjunction with FprEN15502-1:2020
This European Standard covers gas-fired central heating boilers from the types C1 up to C9 and the types B2, B3 and B5:
NOTE 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 437:2018;
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."
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An example of an assessment methodology, based upon risk assessment, is given in Clause 11.
This European Standard does not cover all the requirements for:
aa) Appliances above 1000 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 XC);"
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 (common) 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
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- are wall mounted, free-standing or built-in;
- have a nominal heat input not exceeding 20 kW (based on the net calorific value).
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- decorative fuel effect appliances as specified in EN 509;
- catalytic combustion appliances;
- appliances in which the supply of combustion air and/or evacuation of products of combustion is achieved by mechanical means as specified in EN 1266;
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b) appliances where the air is heated by an intermediate fluid;
c) portable or transportable forced convection appliances;
d) domestic appliances for outdoor installation;
e) appliances fitted with manual or automatic means of adjusting the combustion products evacuation by means of flue dampers;
f) appliances having multiple heating units with a single draught diverter;
g) appliances fitted with more than one flue outlet;
h) appliances fitted with gas boosters;
i) domestic appliances of type C22, C23, C42, C43, C52 and C53;
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