{"id":3491,"date":"2023-10-11T22:58:59","date_gmt":"2023-10-11T20:58:59","guid":{"rendered":"https:\/\/www.zilmet.it\/?post_type=domande-frequenti&#038;p=3491"},"modified":"2023-10-11T22:58:59","modified_gmt":"2023-10-11T20:58:59","slug":"what-is-the-recommended-pre-charge-value-of-an-expansion-vessel","status":"publish","type":"domande-frequenti","link":"https:\/\/zilmet.it\/en\/frequent-questions\/what-is-the-recommended-pre-charge-value-of-an-expansion-vessel\/","title":{"rendered":"What is the recommended pre-charge value of an expansion tank?"},"content":{"rendered":"<p>All Zilmet expansion vessels are tested and pre-filled at the factory. The precharge value can be optimized according to need. Normally it is advisable to set the following precharge values, depending on the type of application:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Heating circuit:<\/strong> it is advisable to set the precharge value at the same pressure value as the system. The measurement must be carried out with the system stopped and unloaded.<\/li>\n\n\n\n<li><strong>Sanitary circuit:<\/strong> it is advisable to set the precharge value to the value of the average inlet pressure of the circuit (aqueduct pressure) or to the calibration pressure of the pressure reducer, if present.<\/li>\n\n\n\n<li><strong>Pressurization systems:<\/strong> the precharge value must be approximately 0.2 bar lower than the pump start pressure.<\/li>\n<\/ul>\n\n\n\n<p>In any case, the pre-charge value must never exceed the 50% of the maximum operating pressure of the vessel and any adjustment must be carried out by qualified and authorized personnel.<\/p>","protected":false},"menu_order":0,"template":"","class_list":["post-3491","domande-frequenti","type-domande-frequenti","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/zilmet.it\/en\/wp-json\/wp\/v2\/domande-frequenti\/3491","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/zilmet.it\/en\/wp-json\/wp\/v2\/domande-frequenti"}],"about":[{"href":"https:\/\/zilmet.it\/en\/wp-json\/wp\/v2\/types\/domande-frequenti"}],"wp:attachment":[{"href":"https:\/\/zilmet.it\/en\/wp-json\/wp\/v2\/media?parent=3491"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}