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(11)

EP 4 500 083 A1

(12)

(43) Date of publication: 05.02.2025 Bulletin 2025/06 (21) Application number: 23713388.9 (22) Date of filing: 24.03.2023

(51) International Patent Classification (IPC):  F23N 5/24(2006.01) (52) Cooperative Patent Classification (CPC): F23N 5/242; F23N 2231/18 (86) International application number: PCT/EP2023/057668 (87) International publication number: WO 2023/180540 (28.09.2023 Gazette 2023/39)

(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: KH MA MD TN (30) Priority: 24.03.2022 EP 22163961 (71) Applicant: BDR Thermea Group B.V. 7332 BD Apeldoorn (NL)	(72) Inventors: WOUDSTRA, Jelmer 7332 BD Apeldoorn (NL) RUTGERS, Job 7332 BD Apeldoorn (NL) (74) Representative: Dennemeyer & Associates S.A.  Postfach 70 04 25 81304 München 81304 München (DE)