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EP 4 798 912 A1

(12)

(43) Date of publication: 02.09.2026 Bulletin 2026/36 (21) Application number: 24794792.2 (22) Date of filing: 24.10.2024

(51) International Patent Classification (IPC):  F24D 12/02(2006.01) F24D 3/18(2006.01) F24H 15/443(2022.01) F24D 3/08(2006.01) F24D 19/10(2006.01) (52) Cooperative Patent Classification (CPC): F24D 2200/04; F24D 12/02; F24D 3/18; F24D 3/08; F24D 19/1039; F24H 15/443; F24D 2200/12 (86) International application number: PCT/EP2024/080083 (87) International publication number: WO 2025/088041 (01.05.2025 Gazette 2025/18)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: GE KH MA MD TN (30) Priority: 27.10.2023 LU 505389 (71) Applicant: BDR Thermea Group B.V. 7332 BD Apeldoorn (NL)	(72) Inventors: GESSLER, Roman 7332 BD Apeldoorn (NL) BÖRGER, Saskia 7332 BD Apeldoorn (NL) (74) Representative: Grabovac, Dalibor  AAP Patentanwaltskanzlei Grabovac Pfeivestlstr. 12 81243 München 81243 München (DE)