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Includes safety instructions on using only approved spare parts, restrictions on reconditioned or unauthorized components, and references for current specification literature. Provides key installer notes such as the boiler reset procedure and technical data tables covering gas supply, connections, injector sizes, pressures, electrical supply, power, casing dimensions, and performance for central heating and domestic hot water.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":30,"@type":76,"position":81},"https://docshare.wps.com/document/technology/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/independent-installation-and-servicing-c24-c30-c35/640886/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/independent-installation-and-servicing-c24-c30-c35/640886.png","ImageObject",300,407,{"name":92,"@type":93},"Rowan","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-27","2026-10-22",true,{"@type":102,"interactionType":103,"userInteractionCount":81},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What spare parts are allowed when replacing components in these boilers?","Question",{"text":112,"@type":113},"Use only spare parts that are confirmed to meet the required safety and performance specifications. Do not use reconditioned or unauthorized copy parts.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How do you reset the boiler after servicing?",{"text":117,"@type":113},"Turn the mode knob to the reset position, then immediately return it to the required setting. If there is a heat demand, the boiler will repeat the ignition sequence.",{"name":119,"@type":110,"acceptedAnswer":120},"What technical parameters are provided in the general data tables for the C24, C30, and C35 models?",{"text":121,"@type":113},"The document lists gas supply and connection details, injector sizes, inlet and outlet connections, flue terminal diameter, flue temperature/flow rate, maximum pressures, electrical supply, power consumption, fuse rating, water contents, weights, and casing dimensions.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},640886,1793006587,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":29,"category_name":30,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":81,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":144,"read_time":145},1099514067415,"https://ap-avatar.wpscdn.com/avatar/100002539d78ffe74a7?x-image-process=image/resize,m_fixed,w_180,h_180&k=1779092875211072502","INSTALLATION AND SERVICING  \nINDEPENDENT  \nC24 C30 C35  \nFor Users Guide see reverse of book  \nFor details of document amendments, refer to page 3  \nWhen replacing any part on this appliance, use only spare parts that you can be assured conform to the safety and performance specification that we require.  \nDo not use reconditioned or copy parts that have not been clearly authorised by Ideal.  \nFor the very latest copy of literature for specification and maintenance practices visit our  \nwebsite [www.idealboilers.com](www.idealboilers.com) where you can download the relevant information in PDF format.  \nMay 2014  \nUIN 205367 A08  \n2 Independent-Installation and Servicing  \n\n| NOTEs FOR ThE INsTaLLER |\n| --- |\n| FOR aNy TEChNICaL qUERIEs pLEasE RINg ThE IDEaL INsTaLLER hELpLINE : 01482 498704\u003Cbr>NOTE. BOILER REsET pROCEDURE\u003Cbr>To reset boiler, turn mode knob to reset position and immediately turn knob back to required setting. The boiler will repeat the ignition sequence if a heat demand is present. |\n\nDOCUMENT aMENDMENTs  \nRelevant Installation changes implemented in this book from Mod Level ....... a07 (Feb 14) to a08 (May 14)  \nCover pages  \nRe-brand outer covers  \nIdeal Stelrad Group reserve the right to vary specification without notice  \nIndependent-Installation and Servicing 3  \ngeneral  \nTable 1-general Data  \n\n| Independent | C24 | C30 |  | C35 |  |\n| --- | --- | --- | --- | --- | --- |\n| Gas supply | 2H-G20-20mbar |  |  |  |  |\n| Gas Supply Connection | 15mm copper compression |  |  |  |  |\n| Injector Size (mm) | 4.15 | 4.65 |  | 4.9 |  |\n| Inlet Connection Domestic Hot Water | 15mm copper tail |  |  |  |  |\n| Outlet Connection Domestic Hot Water | 15mm copper compression |  |  |  |  |\n| Flow Connection Central Heating | 22mm copper compression |  |  |  |  |\n| Return Connection Central Heating | 22mm copper compression |  |  |  |  |\n| Flue Terminal Diameter mm (in) | 100 (4) |  |  |  |  |\n| Average Flue Temp-Mass Flow Rate (DHW) | 63oC-11g/s | 68oC-13g/s |  | 73oC-15g/s |  |\n| Maximum Working Pressure (Sealed Systems) bar (lb/in2) | 2.5 (36 .3) |  |  |  |  |\n| Maximum Domestic Hot Water Inlet Pressure bar (lb/in2) | 10.0 (145) |  |  |  |  |\n| Minimum Domestic Hot Water Inlet Pressure* bar (lb/in2) | 0.8 (11 .6) | 1.3 (18 .9) |  | 1.3 (18 .9)** |  |\n| Electrical Supply | 230 V ~ 50 Hz. |  |  |  |  |\n| Power Consumption W | 146 | 152 |  | 177 |  |\n| Fuse Rating | External : 3A Internal : T4H HRC L250 V |  |  |  |  |\n| Water content Central Heating litre (gal) | 1.2 (0 .26) |  |  |  |  |\n| Domestic Hot Water litre (gal) | 0.5 (0 . 11) |  |  |  |  |\n| Packaged Weight kg (lb) | 37.2 (82 .0) |  | 37.3 (82 .2) |  | 37.5 (82 .7) |\n| Maximum Installation Weight kg (lb) | 32.7 (72 . 1) |  | 32.8 (72 .3) |  | 33 (72 .8) |\n| Boiler Casing Size Height mm (in) | 700 (27 .5) |  |  |  |  |\n| Width mm (in) | 395 (15 .5) |  |  |  |  |\n| Depth mm (in) | 278 (11) |  |  |  |  |\n\n*Required for maximum flow rate. Boiler operates down to 2 l/min DHW delivery ** In areas of low water pressure the DHW restrictor can be removed  \nTable 2-performance Data-Central heating  \n\n| Boiler Input :\u003Cbr>Boiler Input ‘Q’ Nett CV kW\u003Cbr>(Btu/h)\u003Cbr>Gross CV kW\u003Cbr>(Btu/h)\u003Cbr>Gas Consumption m3/h\u003Cbr>(ft3/h) | Max. | Min.\u003Cbr>C24 C30 C35 |  |  |\n| --- | --- | --- | --- | --- |\n|  | 24.3\u003Cbr>(82,900) | 4.9\u003Cbr>(16,600 | 6.1\u003Cbr>(20,700 | 7.1\u003Cbr>(24,100) |\n|  | 27.0\u003Cbr>(92,000) | 5.4\u003Cbr>(18,400) | 6.7\u003Cbr>(23,000) | 7.9\u003Cbr>(26,900) |\n|  | 2.512\u003Cbr>(89) | 0.500\u003Cbr>(17.8) | 0.627\u003Cbr>(22) | 0.734\u003Cbr>(25.9) |\n| Boiler Output :\u003Cbr>Non Condensing kW\u003Cbr>70oC Mean Water temp. (Btu/h)\u003Cbr>Condensing kW\u003Cbr>40oC Mean Water temp. (Btu/h) | 24.2\u003Cbr>(82,600)\u003Cbr>25.6\u003Cbr>(87,400) | 4.8\u003Cbr>(16,500)\u003Cbr>5.1\u003Cbr>(17,500) | 6.1\u003Cbr>(20,700)\u003Cbr>6.4\u003Cbr>(21,800) | 7.1\u003Cbr>(24,100)\u003Cbr>7.5\u003Cbr>(25,500) |\n| Seasonal efficiency* SEDBUK 2005 |  | 91% | 91.1% | 91% |\n| Seasonal efficiency* SEDBUK 2009 |  | 89% | 89% | 88.9% |\n| NOx Classification | CLASS 5 |  |  |  |\n\nTable 3-performance Data-Domestic ho","cbCaidvUnMHLpAkc","https://ap.wps.com/l/cbCaidvUnMHLpAkc","pdf",14659225,64,"English","# Notes for the installer\n## Boiler reset procedure\n# Document amendments\n## Mod Level changes A07 to A08\n# General data\n## Table 1: General data\n## Table 2: Performance data - Central heating\n## Table 3: Performance data - Domestic hot water\n# Key to symbols\n## Appliance classifications and destination countries","[{\"question\":\"What spare parts are allowed when replacing components in these boilers?\",\"answer\":\"Use only spare parts that are confirmed to meet the required safety and performance specifications. Do not use reconditioned or unauthorized copy parts.\"},{\"question\":\"How do you reset the boiler after servicing?\",\"answer\":\"Turn the mode knob to the reset position, then immediately return it to the required setting. If there is a heat demand, the boiler will repeat the ignition sequence.\"},{\"question\":\"What technical parameters are provided in the general data tables for the C24, C30, and C35 models?\",\"answer\":\"The document lists gas supply and connection details, injector sizes, inlet and outlet connections, flue terminal diameter, flue temperature/flow rate, maximum pressures, electrical supply, power consumption, fuse rating, water contents, weights, and casing dimensions.\"}]","Independent - Installation and Servicing - C24 C30 C35 | PDF",1792712036,161]