{"id":61,"date":"2023-03-14T16:57:15","date_gmt":"2023-03-14T15:57:15","guid":{"rendered":"https:\/\/www.thermiedoc.fr\/WP\/?p=61"},"modified":"2023-03-15T23:33:27","modified_gmt":"2023-03-15T22:33:27","slug":"quest-ce-quun-vase-dexpansion","status":"publish","type":"post","link":"https:\/\/www.thermiedoc.fr\/articles\/quest-ce-quun-vase-dexpansion\/","title":{"rendered":"Qu&rsquo;est-ce qu&rsquo;un vase d&rsquo;expansion?"},"content":{"rendered":"\n<p>Le vase d&rsquo;expansion est un \u00e9l\u00e9ment essentiel de tout syst\u00e8me de chauffage central, quelque soit le r\u00e9seau hydraulique (que vous ayez une chaudi\u00e8re gaz, fioul, pompe \u00e0 chaleur, chauffe eau solaire). Il a pour r\u00f4le principal de compenser les variations de volume d&rsquo;eau dans le circuit de chauffage, en absorbant les surpressions, les surchauffes et les dilatations de l&rsquo;eau, c&rsquo;est \u00e9galement la r\u00e9serve d&rsquo;eau du circuit (une partie air pour absorber la dilatation du volume d&rsquo;eau, une partie eau).<\/p>\n\n\n\n<p>Il est interne ou externe \u00e0 votre pompe \u00e0 chaleur ou chaudi\u00e8re, il doit \u00eatre dimensionn\u00e9 en fonction du volume d&rsquo;eau de votre r\u00e9seau de chauffage et du r\u00e9gime de temp\u00e9rature de votre circuit de chauffage, hors calcul complexe il doit faire 6% du volume d&rsquo;eau de votre r\u00e9seau pour un r\u00e9seau radiateur fonctionnant \u00e0 80\u00b0C. Un vase d&rsquo;expansion n&rsquo;est jamais trop gros, a contrario s&rsquo;il est sous dimensionn\u00e9, c&rsquo;est le d\u00e9but des ennuis.<\/p>\n\n\n\n<p>Le fonctionnement du vase d&rsquo;expansion repose sur une membrane \u00e9lastique, qui s\u00e9pare une partie contenant l&rsquo;eau du circuit de chauffage, et une partie contenant de l&rsquo;air comprim\u00e9, qui doit \u00eatre r\u00e9guli\u00e8rement v\u00e9rifi\u00e9e et regonfl\u00e9e lors des entretiens annuels. Lorsque la pression de l&rsquo;eau augmente, l&rsquo;air est comprim\u00e9 et quand la pression baisse c&rsquo;est l&rsquo;inversement.<\/p>\n\n\n\n<p>Si le vase d&rsquo;expansion venait \u00e0 se vider ou \u00e0 se perforer, cela pourrait avoir des cons\u00e9quences sur l&rsquo;ensemble du r\u00e9seau de chauffage, tels que des variations de pression qui peuvent engendrer des fuites et des dysfonctionnements. Il est donc important de le v\u00e9rifier \u00e0 chaque <a href=\"https:\/\/www.thermiedoc.fr\/visite-annuelle-entretien-appareil-climatisation-chauffage.html\">entretien<\/a>, surtout s&rsquo;il est ancien, et de ne pas remettre de l&rsquo;eau trop souvent. En cas remplissage trop fr\u00e9quent il se peut qu&rsquo;il en soit la cause, <a data-type=\"URL\" data-id=\"https:\/\/www.thermiedoc.fr\/contact-thermiedoc.php\" href=\"https:\/\/www.thermiedoc.fr\/contact-thermiedoc.php\">signalez-le nous.<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Le vase d&rsquo;expansion est un \u00e9l\u00e9ment essentiel de tout syst\u00e8me de chauffage central, quelque soit le r\u00e9seau hydraulique (que vous ayez une chaudi\u00e8re gaz, fioul, pompe \u00e0 chaleur, chauffe eau solaire). Il a pour r\u00f4le principal de compenser les variations de volume d&rsquo;eau dans le circuit de chauffage, en absorbant les surpressions, les surchauffes et&hellip;&nbsp;<a href=\"https:\/\/www.thermiedoc.fr\/articles\/quest-ce-quun-vase-dexpansion\/\" class=\"\" rel=\"bookmark\">Lire la suite &raquo;<span class=\"screen-reader-text\">Qu&rsquo;est-ce qu&rsquo;un vase d&rsquo;expansion?<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","_ti_tpc_template_sync":false,"_ti_tpc_template_id":"","footnotes":""},"categories":[10,9,11,6],"tags":[],"class_list":["post-61","post","type-post","status-publish","format-standard","hentry","category-chaudiere","category-chauffage","category-maintenance","category-pompe-a-chaleur"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Qu&#039;est-ce qu&#039;un vase d&#039;expansion? 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