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The manual also covers U-Control operation and setup, system startup and verification tests, annual maintenance, troubleshooting, replacement parts, and technical specifications including dimensions and ratings.",{"@graph":14,"@context":73},[15,34,56],{"@type":16,"itemListElement":17},"BreadcrumbList",[18,23,27,31],{"item":19,"name":20,"@type":21,"position":22},"https://docshare.wps.com","Home","ListItem",1,{"item":24,"name":25,"@type":21,"position":26},"https://docshare.wps.com/document/","Document",2,{"item":28,"name":29,"@type":21,"position":30},"https://docshare.wps.com/document/healthcare/","Healthcare",3,{"item":32,"name":10,"@type":21,"position":33},"https://docshare.wps.com/document/series-4-gas-fired-water-boiler-boiler-manual-installation/641014/",4,{"url":32,"name":10,"@type":35,"image":36,"author":41,"headline":10,"publisher":44,"fileFormat":47,"inLanguage":8,"description":12,"dateModified":48,"datePublished":49,"encodingFormat":47,"isAccessibleForFree":50,"interactionStatistic":51},"DigitalDocument",{"url":37,"@type":38,"width":39,"height":40},"https://docshare.wps.com/thumbnails/series-4-gas-fired-water-boiler-boiler-manual-installation/641014.png","ImageObject",300,407,{"name":42,"@type":43},"Malam Tenang","Person",{"url":19,"name":45,"@type":46},"DocShare","Organization","application/pdf","2026-11-13","2026-10-22",true,{"@type":52,"interactionType":53,"userInteractionCount":55},"InteractionCounter",{"@type":54},"ViewAction",11,{"@type":57,"mainEntity":58},"FAQPage",[59,65,69],{"name":60,"@type":61,"acceptedAnswer":62},"Who is this manual intended for, and what should be done before installing the boiler?","Question",{"text":63,"@type":64},"The manual is intended only for a qualified heating installer/service technician. Read all instructions, including this manual and all other information shipped with the boiler, before installing and follow the steps in the given order.","Answer",{"name":66,"@type":61,"acceptedAnswer":67},"What does the basic installation section cover compared with the advanced section?",{"text":68,"@type":64},"The BASIC INSTALLATION section covers basic installation and startup for most applications, limited to conventional systems and sidewall vent/air piping using the Weil-McLain termination cap. The ADVANCED INSTALLATION section is used first-read and then provides additional information for multiple boiler systems, additional system types, and alternative vent/air piping methods and advanced U-Control details.",{"name":70,"@type":61,"acceptedAnswer":71},"What topics are included in the startup and verification portion of the manual?",{"text":72,"@type":64},"Startup steps include cleaning the system, filling and adding inhibitor, verifying water chemistry, purging air from the system, performing final checks, starting and operating the boiler, and completing final verification tests including filling out the Installation and Service Certificate.","https://schema.org",{"og:url":32,"og:type":75,"og:title":10,"og:site_name":45,"og:description":12},"article",{"robots":77,"canonical":32},"index,follow",{"doc_id":79,"site_id":7},641014,1792915241,{"code":4,"msg":82,"data":83},"success",[84,88,92,96,101,106,110,115,120,123,127],{"id":22,"doc_module":4,"doc_module_name":25,"category_name":85,"show_sort_weight":86,"slug":87},"Story & Novel",90,"story-novel",{"id":26,"doc_module":4,"doc_module_name":25,"category_name":89,"show_sort_weight":90,"slug":91},"Literature",80,"literature",{"id":33,"doc_module":4,"doc_module_name":25,"category_name":93,"show_sort_weight":94,"slug":95},"Exam",70,"exam",{"id":97,"doc_module":4,"doc_module_name":25,"category_name":98,"show_sort_weight":99,"slug":100},5,"Comic",60,"comic",{"id":102,"doc_module":4,"doc_module_name":25,"category_name":103,"show_sort_weight":104,"slug":105},6,"Technology",50,"technology",{"id":107,"doc_module":4,"doc_module_name":25,"category_name":29,"show_sort_weight":108,"slug":109},7,40,"healthcare",{"id":111,"doc_module":4,"doc_module_name":25,"category_name":112,"show_sort_weight":113,"slug":114},8,"Research & Report",30,"research-report",{"id":116,"doc_module":4,"doc_module_name":25,"category_name":117,"show_sort_weight":118,"slug":119},9,"Religion & Spirituality",20,"religion-spirituality",{"id":118,"doc_module":4,"doc_module_name":25,"category_name":121,"show_sort_weight":118,"slug":122},"World Cup","world-cup",{"id":124,"doc_module":4,"doc_module_name":25,"category_name":125,"show_sort_weight":124,"slug":126},10,"Lifestyle","lifestyle",{"id":128,"doc_module":4,"doc_module_name":25,"category_name":129,"show_sort_weight":97,"slug":130},19,"General","general",{"code":4,"msg":82,"data":132},{"doc_id":79,"user_id":133,"nickname":42,"user_avatar":134,"doc_module":4,"category_id":107,"category_name":29,"doc_title":10,"doc_description":12,"doc_content":135,"file_id":136,"file_url":137,"file_type":138,"file_size":139,"view_count":55,"is_deleted":4,"is_public":22,"is_downloadable":22,"audit_status":22,"page_count":140,"language":141,"language_code":8,"site_id":7,"html_lang":8,"table_of_contents":142,"faqs":143,"seo_title":144,"seo_description":12,"update_tm":145,"read_time":146,"preview_page_count":4},962093532863,"https://ap-avatar.wpscdn.com/davatar_276721f389ce27ea32af1340a28f341c","Gas-fired water boilers – Series 4  \nFeaturing  \nBoiler Manual  \n• Installation  \n• Startup  \n• Maintenance  \n• Parts  \nThis manual must only be used by a qualified heating installer/service technician. Read all instructions, including this manual and all other information shipped with the boiler, before installing. Perform steps in the order given. Failure to comply could result in severe personal injury, death or substantial property damage.  \nPart number 550-100-440/0723  \nUltra at-a-glance  \n(see page 44 and page 46 for details of all models)  \nPart number 550-100-440/0723  \n series 4 gas-fired water boiler  \nContents  \nHazard definitions & Ultra at-a-glance 2  \nPlease read before proceeding 4  \nPrepare boiler location 5  \nPrepare boiler 7  \nInstall water piping 9  \nUsing with Weil-McLain AQUA PLUS water heaters 14  \nVenting/air piping—general 16  \nSidewall vent/air termination: Separate pipes 20  \nDIRECT VENT Applications 25  \nDIRECT EXHAUST Applications 26  \nInstall condensate line 27  \nGas piping 29  \nField wiring—basic system 30  \nU-Control operation and setup 32  \nStartup—fill the system 35  \nStartup—final checks 37  \nCheck-out/startup verification 42  \nThe Ultra Gas-fired water boiler, Featuring U-Control Flexibility 44  \nPrepare boiler—convert for propane 48  \nPlacing boiler—wall-mounting option 50  \nInstall water piping—advanced 52  \nDirect-connected DHW piping 56  \nMultiple boiler installations 58  \nVenting/air piping—Massachusetts installations 65  \nVent/air piping—options 66  \nSidewall vent/air termination: Weil-McLain cap 67  \nSidewall vent/air termination: 3” or 4” concentric 72  \nVertical vent/air termination: 3” or 4” concentric 75  \nConcentric vent/air termination assembly 78  \nDIRECT VENT: Vertical vent / sidewall air 79  \nInstall vent/air piping—boiler to termination 82  \nDIRECT EXHAUST venting—general 83  \nDIRECT EXHAUST—Boiler room air openings 84  \nDIRECT EXHAUST—Sidewall 86  \nDIRECT EXHAUST—Vertical 89  \nInstall vent/air piping—boiler to terminations 91  \nGas piping—sizing gas lines 93  \nField wiring—advanced 94  \nU-Control operation and setup—advanced 99  \nAnnual startup and general maintenance 108  \nAnnual startup 109  \nTroubleshooting 115  \nMaintenance 125  \nReplacement parts 128  \nDimensions 136  \nRatings—Ultra Series 4 boilers 137  \nInstallation and Service Certificate 140  \nHazard definitions  \n2  \nThe following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels or to important information concerning the life of the product.  \nIndicates presence of hazards that will cause severe personal injury, death or substantial property damage.  \nIndicates presence of hazards that can cause severe personal injury, death or substantial property damage.  \nIndicates presence of hazards that will or can cause minor personal injury or property damage.  \nIndicates special instructions on installation, operation or maintenance that are important but not related to personal injury or property damage.  \nBASIC INSTALLATION Quick view . . .  \n\n| Pages | Procedure |\n| --- | --- |\n| 4 | Please read before proceeding\u003Cbr>y Read safety information before proceeding |\n| 5–6 | Prepare boiler location\u003Cbr>y Clearances, floor and foundation\u003Cbr>y Air openings to room for ventilation |\n| 7–8 | Prepare boiler\u003Cbr>y Make sure vent/air piping can be connected\u003Cbr>y Remove from crate\u003Cbr>y Convert for propane, if required\u003Cbr>y Hydrostatic test\u003Cbr>y Place boiler in position |\n| 9–15 | Install water piping\u003Cbr>y Install boiler trim and near boiler piping\u003Cbr>y Complete system piping and connections |\n| 16 | Appliances left on an existing vent system\u003Cbr>y For appliances remaining on a vent system after old boiler is disconnected—verify that the vent system works for remaining appliances |\n| 16-26 | Vent/air piping\u003Cbr>y Locate air intake piping to prevent contaminants from entering boiler\u003Cbr>y Install vent/air termination\u003Cbr>y Install vent and air piping using acceptable material","cbCaij6yIKkMcKcU","https://ap.wps.com/l/cbCaij6yIKkMcKcU","pdf",22047029,140,"English","# Hazards definitions & Ultra at-a-glance\n# Please read before proceeding\n# Prepare boiler location\n# Prepare boiler\n# Install water piping\n# Venting/air piping—general\n# Sidewall vent/air termination\n# DIRECT VENT applications\n# DIRECT EXHAUST applications\n# Install condensate line\n# Gas piping\n# Field wiring—basic system\n# U-Control operation and setup\n# Startup—fill the system\n# Startup—final checks\n# Check-out/startup verification\n# Prepare boiler—convert for propane\n# Placing boiler—wall-mounting option\n# Install water piping—advanced\n# Vent/air piping—Massachusetts installations\n# Vent/air piping—options\n# Maintenance & Specifications\n# Troubleshooting\n# Replacement parts\n# Dimensions and ratings","[{\"question\":\"Who is this manual intended for, and what should be done before installing the boiler?\",\"answer\":\"The manual is intended only for a qualified heating installer/service technician. Read all instructions, including this manual and all other information shipped with the boiler, before installing and follow the steps in the given order.\"},{\"question\":\"What does the basic installation section cover compared with the advanced section?\",\"answer\":\"The BASIC INSTALLATION section covers basic installation and startup for most applications, limited to conventional systems and sidewall vent/air piping using the Weil-McLain termination cap. The ADVANCED INSTALLATION section is used first-read and then provides additional information for multiple boiler systems, additional system types, and alternative vent/air piping methods and advanced U-Control details.\"},{\"question\":\"What topics are included in the startup and verification portion of the manual?\",\"answer\":\"Startup steps include cleaning the system, filling and adding inhibitor, verifying water chemistry, purging air from the system, performing final checks, starting and operating the boiler, and completing final verification tests including filling out the Installation and Service Certificate.\"}]","series 4 gas-fired water boiler - boiler manual - Installation | PDF",1792712465,353]