Heat generators using solid biomass fuels subject to environmental certification and complying with the UNI EN standards associated with each category and subsequent amendments to those standards:

a) closed chimneys,
b) open fireplaces;
c) stoves..

Draft Regulation updating Decree No 186 of the Minister for the Environment and the Protection of Land and Sea of 7 November 2017, adopted pursuant to Article 290 (4) of Legislative Decree No 152 of 3 April 2006 – Regulation....

The proposed update of Decree 186/2017 – Regulation governing the requirements, procedures and competences for the issue of certification of heat generators powered by solid biomass fuels aims to adapt the regulatory framework to the technological evolution of the sector, introducing new certification cases and updating the emission and energy performance classes applicable to boilers and stoves, without altering the substantive provisions of the existing regulation.

This regulation, comprising four articles and two annexes, is amended as set out below.
In Article 1, paragraph 3 is replaced in order to update the technical reference legislation also in relation to hybrid appliances.
In Article 3, paragraph 1 is expanded to provide for the revocation of the certification obtained in the event of failure to meet the requirements or any alteration to the generators compared with the characteristics they possessed during the test configuration. A new article is inserted (Article 3a – Equivalence of on-site manufactured products) to classify on-site manufactured storage stoves within the 5-star class, in accordance with standard UNI EN 15544, as they do not currently fall within the scope of Ministeria Decree No 186 of 7 November 2017.
Article 4(1) is extended by adding subparagraph (c), which provides for the reference to the ‘quick start guide’ for manual generators, a proven tool for training the user in how to use the generator.
In Annex 1, ‘Quality classes for the certification of heat generators’, the 5-star class has been revised by adjusting the CO (mg/Nm³) and ŋ (%) values, and a 6-star class has been introduced for both boilers and stoves – with the exception of open fireplaces – whilst a 7-star class has been introduced for boilers only.
In Annex 2, ‘Test Methods’, references shall be included to the new technical standards defining the methods for sampling, analysis and assessment of the emissions set out in Annex 1.