About CEN
The European Committee for Standardization is one of three European Standardization Organizations (together with CENELEC and ETSI) that have been officially recognized by the European Union and by the European Free Trade Association (EFTA) as being responsible for developing and defining voluntary standards at European level.
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Project
| Reference | EN 15502-2-3:2023 |
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| Title | Gas-fired central heating boilers - Part 2-3: Specific standard for hybrid units combining a gas-fired boiler and an electrical heat pump in a product |
| Work Item Number | 00109056 |
| Abstract/Scope | 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. |
| Status |
Published
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| Reference Document | |
| date of Availability (DAV) | 2023-09-14 |
| ICS | 27.060.30 - Boilers and heat exchangers 91.140.10 - Central heating systems |
| A-Deviation(s) | |
| Special National Condition(s) |
Legal
| Directive(s) | 2016/426, 811/2013, 813/2013, 92/42/EEC |
|---|---|
| Mandate(s) | M/066, M/535, M/BC/CEN/89/6 |
| Citation in OJEU | No citation expected for Directive 2016/426, No citation expected for Directive 811/2013, No citation expected for Directive 813/2013, No citation expected for Directive 92/42/EEC |
Implementation Dates
| date of Ratification (DOR) (1) | 2023-06-26 |
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| date of Availability (DAV) (2) | 2023-09-14 |
| date of Announcement (DOA) (3) | 2023-12-31 |
| date of Publication (DOP) (4) | 2024-03-31 |
| date of Withdrawal (DOW) (5) | 2024-03-31 |
Relations
| Supersedes | |
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| Superseded by | |
| Normative reference (6) |
EN 14511-1:2018
EN 14511-3:2018
EN 14511-4:2018
EN 14825:2022
EN 15502-1:2021
EN 15502-2-1:2022
EN 15502-2-2:2024
EN 378-1:2016+A1:2020 EN 378-2:2016 EN IEC 60335-2-40:2023 EN IEC 60335-2-40:2023/A11:2023 ISO 817 AMD 1:2017
ISO 817 AMD 2:2021
ISO 817:2014
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| Sales Points |
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(1) Date of ratification (dor) date when the Technical Board notes the approval of an EN (and HD for CENELEC), from which time the standard may be said to be approved
(2) Date of availability (dav) date when the definitive text in the official language versions of an approved CEN/CENELEC publication is distributed by the Central Secretariat
(3) Date of announcement (doa) latest date by which the existence of an EN (and HD for CENELEC), a TS or a CWA has to be announced at national level
(4) Date of publication (dop) latest date by which an EN has to be implemented at national level by publication of an identical national standard or by endorsement
(5) Date of withdrawal (dow) latest date by which national standards conflicting with an EN (and HD for CENELEC) have to be withdrawn
(6) This list of normative references is purely indicative. The only official list of normative reference is the list of the published standard.
In the case of undated standard, a link to the last dated version is provided.
In the case of series, a link to each standard identified in the series is provided.
We also invite you to check (via the website) whether corrigenda and/or amendments shall be read in conjunction with the main standard.