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(11)

EP 4 352 420 A1

(12)

(43) Date of publication: 17.04.2024 Bulletin 2024/16 (21) Application number: 22730539.8 (22) Date of filing: 30.05.2022

(51) International Patent Classification (IPC):  F24D 19/10(2006.01) F24H 9/20(2022.01) (52) Cooperative Patent Classification (CPC): F24H 9/2035; F24D 2200/12; F24D 2200/19; F24D 19/1009; F24H 9/2042; F24H 15/12; F24H 15/429 (86) International application number: PCT/EP2022/064515 (87) International publication number: WO 2022/258406 (15.12.2022 Gazette 2022/50)

(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 MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 11.06.2021 EP 21179109 (71) Applicant: BDR Thermea Group B.V. 7332 BD Apeldoorn (NL)	(72) Inventors: RUTGERS, Job 7332 BD Apeldorn (NL) PISONI, Andrea 7332 BD Apeldorn (NL) WOUDSTRA, Jelmer 7332 BD Apeldorn (NL) (74) Representative: Dennemeyer & Associates S.A.  Postfach 70 04 25 81304 München 81304 München (DE)