{"id":1164,"date":"2021-12-13T14:45:57","date_gmt":"2021-12-13T13:45:57","guid":{"rendered":"https:\/\/install-bois.pro\/?p=1164"},"modified":"2025-04-14T16:28:02","modified_gmt":"2025-04-14T14:28:02","slug":"les-principaux-changements-du-dtu-24-1","status":"publish","type":"post","link":"https:\/\/install-bois.pro\/index.php\/2021\/12\/13\/les-principaux-changements-du-dtu-24-1\/","title":{"rendered":"Les principaux changements du DTU 24.1"},"content":{"rendered":"\n[et_pb_section fb_built=\u00a0\u00bb1″ _builder_version=\u00a0\u00bb4.24.3″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_row _builder_version=\u00a0\u00bb4.24.3″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4″ _builder_version=\u00a0\u00bb4.24.3″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_text _builder_version=\u00a0\u00bb4.24.3″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb header_font=\u00a0\u00bb|700|||||||\u00a0\u00bb header_text_color=\u00a0\u00bb#FF9933″ header_font_size=\u00a0\u00bb43px\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]

Les principaux changements du DTU 24.1<\/span><\/span><\/h1>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=\u00a0\u00bb2_5,3_5″ _builder_version=\u00a0\u00bb4.24.3″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb2_5″ _builder_version=\u00a0\u00bb4.24.3″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_image src=\u00a0\u00bbhttps:\/\/install-bois.pro\/wp-content\/uploads\/2024\/05\/Image-Install-Bois-zones.png\u00a0\u00bb title_text=\u00a0\u00bbImage Install Bois -zones\u00a0\u00bb _builder_version=\u00a0\u00bb4.24.3″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][\/et_pb_image][et_pb_image src=\u00a0\u00bbhttps:\/\/install-bois.pro\/wp-content\/uploads\/2024\/05\/Image-install-.png\u00a0\u00bb title_text=\u00a0\u00bbImage install\u00a0\u00bb _builder_version=\u00a0\u00bb4.24.3″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb hover_enabled=\u00a0\u00bb0″ global_colors_info=\u00a0\u00bb{}\u00a0\u00bb sticky_enabled=\u00a0\u00bb0″][\/et_pb_image][\/et_pb_column][et_pb_column type=\u00a0\u00bb3_5″ _builder_version=\u00a0\u00bb4.24.3″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_text _builder_version=\u00a0\u00bb4.24.3″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]

Le DTU 24.1 qui constitue LA norme de r\u00e9f\u00e9rence des r\u00e8gles d\u2019installation de syst\u00e8mes d\u2019\u00e9vacuation des produits de combustion a \u00e9t\u00e9 mis \u00e0 jour en Septembre 2020 et son application est devenue obligatoire dans la foul\u00e9e en Octobre. C\u2019est une mise \u00e0 jour importante, il n\u2019y en avait pas eu depuis 2011 !<\/b><\/p>\n

Philippe BOURGOIN, le cr\u00e9ateur d’INSTALL BOIS, est membre de la commisssion du DTU 24-1. D\u00e9couvrez son analyse.\u00a0<\/b><\/p>[\/et_pb_text][et_pb_text _builder_version=\u00a0\u00bb4.24.3″ _module_preset=\u00a0\u00bbdefault\u00a0\u00bb text_font_size=\u00a0\u00bb16px\u00a0\u00bb text_line_height=\u00a0\u00bb1.5em\u00a0\u00bb header_3_font_size=\u00a0\u00bb17px\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]

Exigences g\u00e9n\u00e9rales\u00a0pour l\u2019installation de syst\u00e8mes d\u2019\u00e9vacuation des produits de combustion
<\/span>Outre le gaz et fioul, ce nouveau DTU 24.1 vise tous les combustibles bois et les appareils ayant une temp\u00e9rature nominale des fum\u00e9es jusqu\u2019\u00e0 450\u00b0C<\/span>\u00a0<\/span><\/p>\n

Conduit ramonables\u00a0<\/span>
<\/span>Le conduit de fum\u00e9e et le conduit de raccordement doivent \u00eatre con\u00e7us pour \u00eatre ramonables.\u00a0<\/span>\u00a0<\/span><\/p>\n

Coudes sur le conduit de raccordement
<\/span>La version de 2006 du DTU 24.1 indiquait : \u00ab\u00a0Le conduit de raccordement ne doit pas comporter plus de 2 coudes \u00e0 90\u00b0 sur son parcours<\/em>.\u00a0\u00bb\u00a0<\/span>
<\/span>La nouvelle version de 2020 prescrit :<\/span>\u00a0\u00ab\u00a0La somme des changements de direction du conduit de raccordement ne doit pas d\u00e9passer 180\u00b0<\/em>.\u00a0\u00bb<\/span>
<\/span>Install Bois pr\u00e9cise :<\/span><\/i> <\/span>\u00a0\u00ab pour les inserts, la limite d\u2019angle des coudes est toujours \u00e0 45\u00b0, avec un nombre maxi de 2 coudes. \u00bb<\/span><\/i>\u00a0<\/span><\/p>\n

D\u00e9montabilit\u00e9 du conduit de raccordement
<\/span>Les conduits de raccordement n\u2019ont plus l\u2019obligation d\u2019\u00eatre d\u00e9montables sur toute leur longueur mais sur une partie seulement, \u00e0 condition de permettre la r\u00e9cup\u00e9ration des suies lors du ramonage.<\/span>\u00a0<\/span><\/p>\n

Dimensionnement du conduit de fum\u00e9e
<\/span>Le calcul de dimensionnement des conduits est \u00e9videmment toujours obligatoire sur chaque installation (depuis 2006 !).\u00a0<\/span>
<\/span>Il est m\u00eame dor\u00e9navant pr\u00e9cis\u00e9 qu\u2019il faut faire ces calculs : <\/span>
<\/span>– \u00e0 puissance nominale<\/span>
<\/span>– \u00e0 puissance r\u00e9duite si une puissance r\u00e9duite est d\u00e9clar\u00e9e par le fabricant (en 2006, c\u2019\u00e9tait demand\u00e9 \u00ab le cas \u00e9ch\u00e9ant \u00bb), <\/span>
<\/span>– en mode feu ouvert, si l\u2019appareil peut fonctionner porte ouverte.<\/span>\u00a0<\/span><\/p>\n

Rappel sur les abaques : ils ont \u00e9t\u00e9 \u00e9tablis avec des hypoth\u00e8ses tr\u00e8s nombreuses qui ne sont que tr\u00e8s rarement toutes conformes aux r\u00e9alit\u00e9s du terrain. Comme le pr\u00e9cise la formation Qualibois : \u00ab\u00a0Un abaque ne sera pas reconnu valable, mais donne une tendance. \u00bb\u00a0<\/em><\/span>\u00a0<\/em><\/p>\n

Dimensionnement particulier pour les appareils \u00e0 b\u00fbches
<\/span>Pour les po\u00eales, inserts et cuisini\u00e8res \u00e0 bois b\u00fbche, un calcul dans les conditions s\u00e8ches doit \u00eatre effectu\u00e9 \u00e0 puissance nominale ; ceci signifie qu\u2019il faut dimensionner un conduit comme s\u2019il \u00e9tait class\u00e9 D m\u00eame s\u2019il est r\u00e9ellement class\u00e9 \u00ab\u00a0W\u00a0\u00bb.\u00a0<\/span>
<\/span>Et si l\u2019appareil \u00e0 b\u00fbche a des performances annonc\u00e9es \u00e0 puissance r\u00e9duite, alors on doit faire un autre calcul \u00e0 cette puissance avec un conduit W ou D suivant sa classe r\u00e9elle.<\/span>\u00a0<\/span><\/p>\n

Coffrage obligatoire
<\/span>Dans la version de 2006 du DTU 24.1, un coffrage ou une gaine \u00e9tait n\u00e9cessaire autour d\u2019un conduit m\u00e9tallique DPI (double paroi isol\u00e9) s\u2019il y avait risque de chocs. On consid\u00e8re dor\u00e9navant que le risque de choc est toujours pr\u00e9sent.\u00a0<\/span>
<\/span>Le nouveau DTU est donc plus pr\u00e9cis et exigeant : le conduit m\u00e9tallique DPI doit \u00eatre prot\u00e9g\u00e9 par un coffrage dans toutes les pi\u00e8ces, y compris une mezzanine, sauf dans la pi\u00e8ce o\u00f9 se trouve l\u2019appareil.<\/span>\u00a0<\/span><\/p>\n

Travers\u00e9e de faux-plafond
<\/span>Ajout d\u2019une exigence sp\u00e9cifique aux conduits m\u00e9talliques isol\u00e9s DPI (double paroi isol\u00e9) : le conduit de raccordement (simple paroi) ne doit pas p\u00e9n\u00e9trer dans le faux-plafond., m\u00eame s\u2019il y a un d\u00e9croch\u00e9 dans ce faux-plafond au niveau du passage du conduit.<\/span>\u00a0<\/span><\/p>\n

Position du d\u00e9bouch\u00e9
<\/span>Ce nouveau DTU 24.1 ne recopie plus l\u2019article 18 de l\u2019arr\u00eat\u00e9 du 22\/10\/1969 (d\u00e9passement du faitage de 40 cm sauf si absence de surpression sur le d\u00e9bouch\u00e9), mais il faut bien \u00e9videmment toujours respecter cet arr\u00eat\u00e9 !<\/span>
<\/span>(Les normes europ\u00e9ennes EN 13384-1 et EN 15287-1 ouvrent la possibilit\u00e9 que la sortie de toit en zone 1 ne soit pas \u00e0 40 cm au-dessus du faitage dans certains cas)<\/span>\u00a0<\/span><\/span><\/p>\n

Tubages flexibles autoris\u00e9s en deux parties
<\/span>Les tubages flexibles doivent \u00eatre r\u00e9alis\u00e9s avec un ou deux tenants.\u00a0<\/span>
<\/span>Dans le cas d\u2019un tubage en 2 parties (2 parties max autoris\u00e9es donc 1 seul raccord max, ndlr), le raccord flexible\/flexible doit \u00eatre fourni par le fabricant du tubage.<\/span>\u00a0<\/span><\/p>\n

Embout de finition en haut des tubages flexibles\u202f<\/span>
<\/span>Un tube flexible m\u00e9tallique doit comporter un embout de finition au niveau du d\u00e9bouch\u00e9 sup\u00e9rieur (afin d\u2019\u00e9viter les blessures notamment lors du ramonage, et\/ou d\u2019\u00e9viter qu\u2019un d\u00e9but de d\u00e9grafage du tube flexible ne se propage).<\/span>\u00a0<\/span><\/p>\n

Ramonage\u202f : signalement des non-conformit\u00e9s
<\/span>En plus des anomalies, \u00ab\u00a0les non-conformit\u00e9s constat\u00e9es lors du ramonage doivent \u00eatre signal\u00e9es sur ce certificat\u00a0\u00bb\u202fde ramonage.<\/span>
<\/span>Install Bois en conclut qu\u2019un ramoneur doit v\u00e9rifier les non conformit\u00e9s, mais uniquement celles qu\u2019il est en capacit\u00e9 d\u2019observer lors de ses op\u00e9rations de ramonage (par exemple, il n\u2019a pas \u00e0 contr\u00f4ler la conformit\u00e9 d\u2019un coffrage \u00e0 l\u2019\u00e9tage puisque le ramonage ne n\u00e9cessite pas de se rendre \u00e0 l\u2019\u00e9tage).\u00a0<\/em>
Mais en cons\u00e9quence, les ramoneurs doivent faire attention que leur responsabilit\u00e9 ne soit pas en partie engag\u00e9e pour non signalement d\u2019une non-conformit\u00e9 visible ou constatable lors de leurs op\u00e9rations (en facturant si besoin cette prestation suppl\u00e9mentaire de constats).<\/em><\/p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section]\n","protected":false},"excerpt":{"rendered":"

D\u00e9couvrez de mani\u00e8re synth\u00e9tique les principaux updates du DTU 24.1<\/p>\n","protected":false},"author":1,"featured_media":2060,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"1080","footnotes":""},"categories":[1],"tags":[],"class_list":["post-1164","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-non-classe"],"yoast_head":"\nLes principaux changements du DTU 24.1 - INSTALL BOIS<\/title>\n<meta name=\"description\" content=\"Le DTU 24.1 qui constitue LA norme de r\u00e9f\u00e9rence des r\u00e8gles d\u2019installation de syst\u00e8mes d\u2019\u00e9vacuation des produits de combustion a \u00e9t\u00e9 mis \u00e0 jour en Septembre 2020 et son application est devenue obligatoire dans la foul\u00e9e en Octobre.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/install-bois.pro\/index.php\/2021\/12\/13\/les-principaux-changements-du-dtu-24-1\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Les principaux changements du DTU 24.1 - 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