{"id":5524,"date":"2024-09-26T08:53:00","date_gmt":"2024-09-26T06:53:00","guid":{"rendered":"https:\/\/www.idro-elettrica.it\/esperto-risponde\/compact-and-uni-11292-pressure-booster-groups\/"},"modified":"2026-07-01T09:46:57","modified_gmt":"2026-07-01T07:46:57","slug":"compact-and-uni-11292-pressure-booster-groups","status":"publish","type":"esperto-risponde","link":"https:\/\/www.idro-elettrica.it\/en\/esperto-risponde\/compact-and-uni-11292-pressure-booster-groups\/","title":{"rendered":"Compact Pressurization Units: UNI 11292 Guide"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><em>Compact pressurization units: If you\u2019ve been told that \u201cthey can no longer be used,\u201d the reason has to do with the requirements for a fire protection water supply system that complies with UNI 11292:2019. In this response, we\u2019ll clarify the definitions and practical constraints. <\/em><\/p>\n\n<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><h2>Table of Contents<\/h2><nav><ul><li class=\"\"><a href=\"#il-contesto-centrale-idrica-antincendio-e-uni-11292\">Background: Fire Protection Water Supply Station and UNI 11292<\/a><\/li><li class=\"\"><a href=\"#che-cosa-si-intende-per-gruppi-di-pressurizzazione-compatti\">What are compact pressurization units?<\/a><\/li><li class=\"\"><a href=\"#il-concetto-di-pump-set-gruppo-di-pressurizzazione\">The Concept of a Pump Set (Pressurization System)<\/a><\/li><li class=\"\"><a href=\"#gruppi-di-pressurizzazione-compatti-e-uni-11292-i-requisiti-richiamati\">Compact Pressurization Units and UNI 11292: The Requirements Referenced<\/a><ul><li class=\"\"><a href=\"#sistemi-di-fissaggio-6-6\">Fastening Systems (6.6)<\/a><\/li><li class=\"\"><a href=\"#dimensioni-dei-locali-5-2-2-altezza\">Room Dimensions (5.2.2): Height<\/a><\/li><li class=\"\"><a href=\"#dimensioni-dei-locali-5-2-2-spazio-di-lavoro-in-pianta\">Room Dimensions (5.2.2): Floor Plan of the Workspace<\/a><\/li><li class=\"\"><a href=\"#serbatoi-gasolio-6-10-1\">Diesel Fuel Tanks (6.10.1)<\/a><\/li><\/ul><\/li><li class=\"\"><a href=\"#riassunto-operativo-i-4-requisiti-bloccanti-per-un-gruppo-compatto\">Executive Summary: The 4 \u201cDealing-Breakers\u201d for a Cohesive Team<\/a><\/li><li class=\"\"><a href=\"#perche-un-gruppo-di-pressurizzazione-compatto-non-soddisfa-i-requisiti\">Why a compact pressurization unit does not meet the requirements<\/a><\/li><li class=\"\"><a href=\"#conclusione-cosa-significa-non-piu-utilizzabili-in-pratica\">Conclusion: What Does \u201cNo Longer Usable\u201d Mean in Practice?<\/a><\/li><\/ul><\/nav><\/div>\n\n<h2 id=\"il-contesto-centrale-idrica-antincendio-e-uni-11292\" class=\"wp-block-heading\">Background: Fire Protection Water Supply Station and UNI 11292<\/h2>\n\n<p class=\"wp-block-paragraph\">The question stems from a common concern among those who work on fire suppression systems: Can \u201ccompact\u201d pressurization units still be used?<\/p>\n\n<p class=\"wp-block-paragraph\">The answer, within the scope under consideration, is that <strong>they can no longer be used within a fire protection water supply station that complies with the requirements of UNI 11292:2019<\/strong>, a standard dedicated to \u201cRooms intended to house pump-sets for fire protection systems\u2014Construction and functional characteristics\u201d.<\/p>\n\n<p class=\"wp-block-paragraph\">The reason is not \u201cgeneric\u201d: it becomes clear once the reference unit cited in UNI 11292\u2014namely, the <strong>Pump-Set<\/strong>\u2014is properly introduced.<\/p>\n\n<h2 id=\"che-cosa-si-intende-per-gruppi-di-pressurizzazione-compatti\" class=\"wp-block-heading\">What are compact pressurization units?<\/h2>\n\n<p class=\"wp-block-paragraph\">The term \u201ccompact pressurization units\u201d refers to a configuration in which multiple components (and multiple units) are <strong>integrated onto a common frame<\/strong>.<\/p>\n\n<p class=\"wp-block-paragraph\">The critical issue, however, is not the compactness itself: it is compatibility with certain explicit requirements (and certain practical consequences) which, in the case described, are linked to UNI 11292 when discussing installation in a central facility.<\/p>\n\n<h2 id=\"il-concetto-di-pump-set-gruppo-di-pressurizzazione\" class=\"wp-block-heading\">The Concept of a Pump Set (Pressurization System)<\/h2>\n\n<p class=\"wp-block-paragraph\">To understand these constraints, we need to introduce the concept of <strong>a PUMP-SET (or pressurization group)<\/strong>.<\/p>\n\n<p class=\"wp-block-paragraph\">The definition of \u201cPump Set\u201d is provided in section 3.15 of UNI 11292, and in the case at hand, the Pump Set consists of:<\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>Pump<\/strong><\/li>\n\n\n\n<li><strong>Joint<\/strong><\/li>\n\n\n\n<li><strong>Engine<\/strong><\/li>\n\n\n\n<li><strong>Base<\/strong><\/li>\n\n\n\n<li><strong>Painting<\/strong><\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">This breakdown is important because it shifts the focus from the \u201coverall machine\u201d to <strong>the individual pump unit<\/strong> and how it should be installed and maintained over time (stability, alignment, vibrations, working space).<\/p>\n\n<h2 id=\"gruppi-di-pressurizzazione-compatti-e-uni-11292-i-requisiti-richiamati\" class=\"wp-block-heading\">Compact Pressurization Units and UNI 11292: The Requirements Referenced<\/h2>\n\n<p class=\"wp-block-paragraph\">In the case at hand, reference is made to certain explicit requirements of UNI 11292 concerning the Pump-Set.<\/p>\n\n<h3 id=\"sistemi-di-fissaggio-6-6\" class=\"wp-block-heading\">Fastening Systems (6.6)<\/h3>\n\n<p class=\"wp-block-paragraph\">To prevent vibrations from being transmitted to the building\u2019s structure, <strong>appropriate systems<\/strong> must be provided <strong>to anchor or cement<\/strong> the pump unit <strong>to the floor<\/strong>.<\/p>\n\n<p class=\"wp-block-paragraph\">In addition, the fastening system must:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>ensure <strong>the stability and alignment<\/strong> of the pump unit <strong>over time<\/strong>;<\/li>\n\n\n\n<li>have mechanical characteristics that allow it to <strong>withstand the<\/strong> unit&#8217;s <strong>vibration<\/strong> during operation.<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">Attention is also drawn to installations in areas prone to earthquakes and to the need to prevent loads from being placed on the pump flanges by using appropriate supports.<\/p>\n\n<h3 id=\"dimensioni-dei-locali-5-2-2-altezza\" class=\"wp-block-heading\">Room Dimensions (5.2.2): Height<\/h3>\n\n<p class=\"wp-block-paragraph\">A clearance <strong>of at least 2.40 m<\/strong> must be maintained in the workspace and along the route leading to it.<\/p>\n\n<p class=\"wp-block-paragraph\">Structures that locally reduce the height to a minimum of <strong>2.00 m<\/strong> are permitted.<\/p>\n\n<h3 id=\"dimensioni-dei-locali-5-2-2-spazio-di-lavoro-in-pianta\" class=\"wp-block-heading\">Room Dimensions (5.2.2): Floor Plan of the Workspace<\/h3>\n\n<p class=\"wp-block-paragraph\">The minimum floor area of the workspace must be <strong>equal to or greater than 0.80 m on at least three sides<\/strong> of each pumping unit.<\/p>\n\n<p class=\"wp-block-paragraph\">The same minimum distance must also be maintained <strong>between the installed pump units<\/strong>.<\/p>\n\n<h3 id=\"serbatoi-gasolio-6-10-1\" class=\"wp-block-heading\">Diesel Fuel Tanks (6.10.1)<\/h3>\n\n<p class=\"wp-block-paragraph\">Diesel fuel tanks must be:<\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>firmly anchored<\/strong>;<\/li>\n\n\n\n<li>installed in such a way that they cannot be accidentally damaged;<\/li>\n\n\n\n<li>with sturdy support structures <strong>designed exclusively for the tank<\/strong>;<\/li>\n\n\n\n<li>capable of withstanding static loads and <strong>the effects of vibrations<\/strong>.<\/li>\n<\/ul>\n\n<h2 id=\"riassunto-operativo-i-4-requisiti-bloccanti-per-un-gruppo-compatto\" class=\"wp-block-heading\">Executive Summary: The 4 \u201cDealing-Breakers\u201d for a Cohesive Team<\/h2>\n\n<p class=\"wp-block-paragraph\">In the text, these points are summarized as follows (from a practical installation perspective):<\/p>\n\n<p class=\"wp-block-paragraph\">A) <strong>Each Pump-Set must be secured independently<\/strong> to the base slab and\/or foundation.<br\/>B) The <strong>Outlet manifold<\/strong> connecting two Pump-Sets must be located at least <strong>2 m<\/strong> from the base slab.<br\/>C) Each Pump-Set must be at least <strong>0.8 m<\/strong> away from the adjacent one.<br\/>D) Each <strong>diesel fuel tank<\/strong> must be secured independently either to the foundation slab or to the walls.<\/p>\n\n<p class=\"wp-block-paragraph\">These four points make it easy to compare \u201cindependent units\u201d and \u201csystems on a common frame.\u201d<\/p>\n\n<h2 id=\"perche-un-gruppo-di-pressurizzazione-compatto-non-soddisfa-i-requisiti\" class=\"wp-block-heading\">Why a compact pressurization unit does not meet the requirements<\/h2>\n\n<p class=\"wp-block-paragraph\">As described, <strong>none of the four requirements<\/strong> listed above can be met by a compact unit, due to design limitations typical of the \u201ccompact\u201d configuration.<\/p>\n\n<p class=\"wp-block-paragraph\">Specifically:<\/p>\n\n<ol class=\"wp-block-list\">\n<li><strong>Non-independent mounting of the bases<\/strong><br\/>The individual bases are not mounted independently to the base slab: the frames of the individual pump units are mounted to an additional frame, which in turn is secured to the slab.<\/li>\n\n\n\n<li><strong>Insufficient collector height<\/strong><br\/> The collector is placed at a height lower than the minimum <strong>2 m<\/strong> mentioned in the summary.<\/li>\n\n\n\n<li><strong>Distances between Pump-Sets less than 0.8 m<\/strong><br\/>The Pump-Sets are located less than the required <strong>0.8 m<\/strong> apart.<\/li>\n\n\n\n<li><strong>Tanks Mounted on a Common Frame<\/strong><br\/>The tanks are mounted on the frame shared with the pumps, rather than being mounted independently on the base slab or walls.<\/li>\n<\/ol>\n\n<p class=\"wp-block-paragraph\">In short, the issue is not \u201ca minor detail\u201d: it concerns <strong>fasteners, dimensions, and distances<\/strong> that, in the compact configuration, are structurally difficult (or impossible) to meet in the specified context.<\/p>\n\n<h2 id=\"conclusione-cosa-significa-non-piu-utilizzabili-in-pratica\" class=\"wp-block-heading\">Conclusion: What Does \u201cNo Longer Usable\u201d Mean in Practice?<\/h2>\n\n<p class=\"wp-block-paragraph\">The foregoing makes it impossible to use a compact pressurization unit <strong>within a fire control center that<\/strong> complies with the requirements referred to.<\/p>\n\n<p class=\"wp-block-paragraph\">If you are considering an installation or retrofit, the right approach is to plan by <strong>pump set<\/strong> and carefully verify the mounting requirements, working spaces, distances, and constraints on the tanks.<\/p>\n\n<p class=\"wp-block-paragraph\">For operational support, request a site visit or a technical consultation: this will allow us to verify that the planned configuration meets the applicable requirements and the actual conditions of the premises.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Compact pressurization units: UNI 11292:2019 makes it impossible to use them in a compliant fire protection water supply system. The key point is the concept of a \u201cpump set\u201d and the requirements regarding mountings, clearances, and tanks. In this response, we summarize what is required and why a \u201ccompact\u201d unit fails to meet these requirements.  <\/p>\n","protected":false},"featured_media":5525,"parent":0,"template":"","meta":{"_acf_changed":false,"_angie_page":false,"footnotes":"","_members_access_role":[],"_members_access_error":""},"tags":[1109,1112,1113,805,1042,1110,1111,582,581,586],"class_list":["post-5524","esperto-risponde","type-esperto-risponde","status-publish","has-post-thumbnail","hentry","tag-compact-pressurization-units","tag-diesel-fuel-tanks","tag-fire-protection-systems-workspace","tag-fire-protection-water-station","tag-fire-pump-sets","tag-local-pump-stations","tag-pump-mounting","tag-pump-set","tag-uni-11292","tag-vibrations"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.idro-elettrica.it\/en\/wp-json\/wp\/v2\/esperto-risponde\/5524","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.idro-elettrica.it\/en\/wp-json\/wp\/v2\/esperto-risponde"}],"about":[{"href":"https:\/\/www.idro-elettrica.it\/en\/wp-json\/wp\/v2\/types\/esperto-risponde"}],"version-history":[{"count":0,"href":"https:\/\/www.idro-elettrica.it\/en\/wp-json\/wp\/v2\/esperto-risponde\/5524\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.idro-elettrica.it\/en\/wp-json\/wp\/v2\/media\/5525"}],"wp:attachment":[{"href":"https:\/\/www.idro-elettrica.it\/en\/wp-json\/wp\/v2\/media?parent=5524"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.idro-elettrica.it\/en\/wp-json\/wp\/v2\/tags?post=5524"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}