Changes in EN 12976-1.

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Presentation transcript:

Changes in EN 12976-1

Most important modifications. DIN EN 12976-1:2017-04 Safety valves Reference to EN 1489 Resistance to external influences Impact on the performance and durability of essential building elements Labelling Harmonisation with ErP New Annex C Definition of system families; possible range of variations within one system type

Most important modifications – I. Safety valves: new requirement that safety valves shall conform with EN 1489 Section 4.1.8 former section 4.1.6: Wording changed from “shall comply with” to “shall conform to” Section 4.4.1. Addition of: “The safety valves shall conform to EN 1489.

Most important modifications – II. Resistance to external influences Consideration that the solar components can impact on the performance and durability of essential building elements, e.g. roofs and facades Section 4.1.4 manufacturer shall define maximum load testing of resistance of not-separable solar thermal systems -> EN 12976-2:2017, 5.5 country specific maximum load required for test values for cover collector box fixings between collector box and mounting system

Most important modifications – III. Resistance to external influences Section 4.5 Components that are mounted /integrated with essential building elements -> Performance and durability testing according to CEN/TR 15601 If performance and durability is effected -> life of external collector/components of system components shall not reduce or degrade the performance/durability On-roof collector installations: (penetrating) mounting elements and fixings -> weather tightness test If bracket, hanger or similar fixings for on-roof mounting do not create greater gapping than that of the roof covering -> no testing required Solar pipe penetrations should not reduce/degrade the performance/durability of an essential building element

Most important modifications – IV. Energy Labelling Section 4.7 For harmonisation with ErP the reference to CEN Mandate M/324 concerning Energy labelling was added Original content of section 4.7 Labelling remains, but Addition of clarification on wording “durably marked on a plate or label” the label is included in the documentation supplied with the system and in the documentation it is stated that the label (or corresponding page of the documentation with the label) shall be placed at the systems or the site where the system is installed and an appropriate way for providing a durable fixing and display of the label is provided. Specifications on wording

Most important modifications – V. Annex C New normative Annex: definition of system families; possible range of variations within one system type Requirements for systems as being of the same subtype: C.2. Same hydraulic principle, heat exchanger, heat storage tank, collector, collector loop piping, controllers and pumps Definition of “same” under a) – h) Requirements for testing: C.3, The “medium system configuration” shall be tested according to all requirements in the EN 12976 series Testing the over temperature protection and safety (EN 12976-2:2017, 5.2) -> “configuration: highest ratio of collector reference area to total storage volume” Procedure: C.4.