{"id":161539,"date":"2026-10-29T19:26:52","date_gmt":"2026-10-29T16:26:52","guid":{"rendered":"https:\/\/onlinestandart.com\/standard\/ts-en-303-1-3\/"},"modified":"2026-10-30T01:28:38","modified_gmt":"2026-10-29T22:28:38","slug":"ts-en-303-1-3","status":"publish","type":"product","link":"https:\/\/onlinestandart.com\/en\/standard\/ts-en-303-1-3\/","title":{"rendered":"TS EN 303-1"},"content":{"rendered":"<p>Heating boilers &#8211; Part 1: Heating boilers with forced draught burners &#8211; Terminology, general requirements, testing and marking<\/p>\n","protected":false},"excerpt":{"rendered":"<p>This European Standard applies to boilers used for central heating (heating boilers) with forced<br \/>\ndraught burners with a nominal heat output not exceeding 1 000 kW, which are operated either with<br \/>\nnegative pressure (natural draught boilers) or with positive pressure (pressurized boiler) in the<br \/>\ncombustion chamber, in accordance with the boiler instructions.<br \/>\nThis European Standard specifies the necessary terminology, the requirements on the materials and<br \/>\ntesting of them, and marking requirements for heating boilers.<br \/>\nParticular requirements for boilers that can be used with open vented systems are contained in<br \/>\nEN 303-4.<br \/>\nThe requirements of this standard apply to heating boilers that are tested on an authorized test rig.<br \/>\nBoilers in accordance with this standard are designed for the heating of central heating installations in<br \/>\nwhich the heat carrier is water, and the maximum allowable operating temperature of which is<br \/>\nrestricted to 100 \u00b0C. The maximum allowable operating pressure is 8 bar.<br \/>\nFor boilers and water heaters (storage or continuous flow heater) this standard only applies to the<br \/>\nparts which are necessarily subject to the operating conditions of the heating boiler (heating part).<br \/>\nThis standard does not apply to gas boilers with atmospheric burners, boilers for solid fuels, boilers<br \/>\nwith oil vaporization burners. For these boilers there are further requirements.<\/p>\n","protected":false},"featured_media":0,"template":"","meta":{"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":""},"product_brand":[],"product_cat":[175],"product_tag":[],"class_list":["post-161539","product","type-product","status-publish","product_cat-tse","first","instock","purchasable","product-type-simple","entry","content-bg","loop-entry"],"taxonomy_info":{"product_cat":[{"value":175,"label":"TSE"}]},"featured_image_src_large":false,"author_info":[],"comment_info":"","_links":{"self":[{"href":"https:\/\/onlinestandart.com\/en\/wp-json\/wp\/v2\/product\/161539","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/onlinestandart.com\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/onlinestandart.com\/en\/wp-json\/wp\/v2\/types\/product"}],"wp:attachment":[{"href":"https:\/\/onlinestandart.com\/en\/wp-json\/wp\/v2\/media?parent=161539"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/onlinestandart.com\/en\/wp-json\/wp\/v2\/product_brand?post=161539"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/onlinestandart.com\/en\/wp-json\/wp\/v2\/product_cat?post=161539"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/onlinestandart.com\/en\/wp-json\/wp\/v2\/product_tag?post=161539"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}