[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-657915-105":59,"doc-detail-657915-en":130},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":123,"head_meta":125,"extra_data":127,"updated_unix":129},105,"en","efficiency-boilers-water-heaters-wiring-diagrams-ladder-diagram-water-heater-models-150000-300000-btu-hr","EFFICIENCY BOILERS - WATER HEATERS WIRING DIAGRAMS - LADDER DIAGRAM – WATER HEATER MODELS 150,000-300,000 BTU / HR","","Ladder wiring diagrams for efficiency boiler and water heater systems covering water heater models rated 150,000–300,000 BTU/hr. Content specifies connections to 120 VAC power supply, power switch, transformer outputs, thermostat and limit switches, gas valve, blower, pump, LWCO and flow/low-air proving switches, ignition module and igniter transformer. Includes wiring notes such as removing jumpers between W1/R1 and X/B, terminal board labeling, relay/alarm contact wiring, and optional equipment such as pump delay and freeze protection.",{"@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/efficiency-boilers-water-heaters-wiring-diagrams-ladder-diagram-water-heater-models-150000-300000-btu-hr/657915/",{"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/efficiency-boilers-water-heaters-wiring-diagrams-ladder-diagram-water-heater-models-150000-300000-btu-hr/657915.png","ImageObject",300,407,{"name":92,"@type":93},"Mary Man","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-30","2026-10-26",true,{"@type":102,"interactionType":103,"userInteractionCount":19},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What power supply voltage is used in these wiring diagrams?","Question",{"text":112,"@type":113},"The diagrams show connection to a 120 VAC power supply, feeding a transformer that provides 24 VAC and 24 VDC-related signals for control components.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"Which jumper connections are referenced in the wiring notes?",{"text":117,"@type":113},"The notes specify removing the jumper between W1 and R1 to connect a remote operator or MOD-U-PAK, and removing the jumper between X and B for proper series wiring.",{"name":119,"@type":110,"acceptedAnswer":120},"What components are shown as part of the ignition and safety control system?",{"text":121,"@type":113},"The diagrams include an ignition module and igniter/ignition transformer, a gas valve, LWCO-related wiring, flow/low air proving switch contacts, and alarm bell/relay contacts tied to control signaling.","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},657915,1792994196,{"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":19,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":19,"language":139,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":67,"update_tm":129,"read_time":52},7421720224475,"https://ap-avatar.wpscdn.com/davatar_276721f389ce27ea32af1340a28f341c","EB-EW-WRG-01  \nEFFICIENCY BOILERS / WATER HEATERS WIRING DIAGRAMS  \nLADDER DIAGRAM – WATER HEATER MODELS 150,000-300,000 BTU / HR  \nTO 120 VAC POWER SUPPLY  \nOPTIONAL EQU IPMENT W IRING  \n| \u003Cbr>|\n| --- |\n| \u003Cbr>\u003Cbr>COMBUSTION\u003Cbr>IGN MOD P5 AIR BLOWER |\n| \u003Cbr>IGNITER |\n| 120 VAC |\n\nPOWER SWITCH  \nOFF ON  \nTRANSFORMER  \n24 VAC  \nTHERMOSTAT CN 7  \nCN 8  \n24VDC PUMP DELAY  \nLIMIT  \n* LWCO MRHL  \nSWITCH  \nR1 W1 CN 1-4 CN 1-3  \nR2 W2  \n* HFGV  \nC  \nNO  \nNC  \nC  \nNO  \nNC  \nGAS VALVE  \n* RELAY (ALARM)  \n* ALARM CONTACTS  \nTDR  \n* LOUVER CONTACTS  \n| P 3-2\u003Cbr>P 3-3\u003Cbr>P 3-6 | IGNITION MODULE | P 3-8\u003Cbr>P 3-5 |\n| --- | --- | --- |\n\n* FLOWSWITCH  \nX B  \nP 3-7  \n| LOW AIR |  |  |\n| --- | --- | --- |\n| P 3-1 |  |  |\n\nL1 (HOT)  \nL2  \n*  \nLWCO  \n6 2  \nCN 2-1  \nCN 2-2  \nALARM BELL  \nWIRING DIAGRAM – WATER HEATER MODELS 150,000-300,000 BTU / HR  \n*  \n*  \nPROBE  \n2 1 C  \n|  |  |\n| --- | --- |\n\nDISCONNECT POWER BEFORE SERVICING UNIT  \nBL  \nBL  \nINLET TANK IF NOT EQUIPPED  \nSENSOR SENSOR WITH LWCO CONNECT  \nTO \"R1\" . ELSE OR  \nCONNECT TO * WIRING NOTES:  \nLWCO \"COM\" . 1. REMOVE JUMPER BETWEEN “W1” AND “R1” TO CONNECT  \nC NO REMOTE OPERATOR OR MOD-U-PAK .  \nP  \nFLOW 2. WIRE ALL PROVING SWITCHES, FLOW SWITCHES, AND CONTROLS TO  \nBK SWITCH “X” & “B” IN SERIES TO SCREW TERM INALS .  \nBK NOTE: REMOVE JUMPER BETWEEN \"X\" & \"B\" .  \nT  \nBL  \nOR TERMINAL  \nBL STRIP *ALARM  \nR1 W1 R2 W2 A X B C  \n* OPT. AMRHL  \nOPT IONAL AMRHL REQUIRES MAX STOP SET @ 240°F  \n2  \n2  \n1  \n(+)  \nOPT. FMRHL 1 BL/W  \n* LOUVER 24V RELAY  \nCONTACTS  \n1 3  \n2  \n24V RELAY 4 5 6  \nR  \nR  \nY  \nTERMINAL BOARD  \nOR  \nR/BK  \nT  \nTHERMOSTAT  \nY  \nLIMIT  \nBL Y  \nR/ORR/W  \nIF NO H IGH FIRE GAS VALVE  \nR/W Y  \nBL/W R/W  \nOR R/BK R/BK  \nOR OR  \nWIRES TIED OFF & CAPPED 8 1  \n7-C 2-C  \n6-NO 3-NO  \n5-NC 4-NC  \nT IME DELAY RELAY  \n* ALARM  \nBR BR CONTACTS  \nBL Y  \nIGN IT ION TRANSFORMER  \nMODULE  \nBK W  \nGY  \nIGNITERGY  \nBURNER GROUND  \nWATER HEATER LBL200 17 REV A  \nR/BK  \nBL  \nY  \nGY  \nGY  \nBR  \nW  \nGR  \nBK  \nW  \nH IGH FIRE GAS VALVE  \nR/BK  \nC  \nNC  \nNO  \nLOW AIR SWITCH  \nY  \nOR/RY  \nWIRES TIED OFF & CAPPED  \nBL  \nT  \nR  \nY  \nY  \nIF NOT EQUIPPED  \nY  \nWITH LWCO  \nGAS VALVE  \nBR  \nW  \nGR  \nBLOWER  \nBK/W  \nW  \nPUMP  \nW  \nSPLICE 5  \nBL  \nBL  \nY  \nBK/W  \nBL  \nALARM BELL  \n*  \nBR  \nJ3 OR  \nT  \n6 3 5 2  \n4 1 PR  \nBL/BK  \nOR  \nOR  \nPUMP DELAY/ FREEZE PROTECTION  \nC NO 24 VDC  \nTEST BUTTON  \nT  \nO . C .  \n24 V  \nBL  \nY  \nLWCORESET  \nJ2  \n24 VAC  \nT  \nON-OFF SWITCH  \n1 2 3  \nBL  \nBL  \nJ4  \nOR  \nGR  \n1 2 3  \nGNDP  \nG  \nPR PR  \nRESET  \nRESET  \nWBK  \nW  \nGR  \n* IF EQUIPPED  \nOPTIONAL EQU IPMENT WIRING  \nUSE ELECTR ICAL CONNECTION 1& 2  \n(+)  \nJ1  \n2 of 4  \nLADDER DIAGRAM – BOILER MODELS 150,000-300,000 BTU / HR  \nOPTIONAL EQU IPMENT W IRING  \n*  \nIF EQUIPPED BOILER LBL200 18 REV A  \nTO 120 VAC POWER SUPPLY  \nPOWER SWITCH OFF ON  \nA  \nIGN MOD P5  \nIGN MOD P6  \n* PUMP DELAY  \n24V  \nPUMP RELAY  \nCOMBUSTION AIR BLOWER  \nIGNITER  \n* PUMP  \n120 VAC  \n24 VAC  \nTRANSFORMER  \n* LWCO A  \nR1 W1  \nMRHL  \nTHERMOSTAT CN 7  \nCN 8  \n24VDC PUMP DELAY  \n24VAC PUMP RELAY  \nCN 1-1  \nCN 1-4  \nCN 1-2  \nCN 1-3  \nLIMIT SWITCH  \nR2 W2  \n* FLOWSWITCH  \nLOW  \nAIR  \nX B  \nP 3-7 P 3-1  \nP 3-2 P 3-8  \n* HFGV  \nP 3-3  \nP 3-6  \nIGNITION MODULE  \nP 3-5  \nC  \nNO  \nNC  \nC  \nNO  \nNC  \nGAS VALVE  \n* RELAY (ALARM)  \n* ALARM CONTACTS  \nTDR  \n* LOUVER CONTACTS  \n*  \nLWCO  \n6 2  \nCN 2-1  \nCN 2-2  \n ALARM BELL      \n3 of 4  \nWIRING DIAGRAM – BOILER MODELS 150,000-300,000 BTU / HR  \nREV A  \nDISCONNECT POWER BEFORE SERVICING UNIT  \n*  \nPROBE  \n| |  |\n| --- | --- |\n\nOR  \nWIRING NOTES:  \n1. REMOVE JUMPER BETWEEN “W1” AND “R1” TO CONNECT REMOTE OPERATOR OR MOD-U-PAK .  \n2. WIRE ALL PROV ING SWITCHES, FLOW SWITCHES, AND CONTROLS TO“X” & “B” IN SERIES TO SCREW TERM INALS .  \n3. PUMP DELAY OPERATION IS OPTIONAL WITH KIT3058.  \nBL  \nBL  \n*  \nNO  \nCP  \nFLOWSWITCH  \nNOTE: REMOVE JUMPER BETWEEN \"X\" & \"B\" .  \nIF NOT EQUIPPED WITH LWCO CONNECT TO \"R 1\" . ELSE CONNECT TO  \nLWCO \"COM\" .  \n*  \nINLET SYSTEM  \nSENSOR SENSOR  \nBK  \nBK  \n* OPT. AMRHL  \nBL/W  \n2  \n2  \n","cbCaihIjuHYCkq31","https://ap.wps.com/l/cbCaihIjuHYCkq31","pdf",254695,"English","# Wiring Diagram Overview\n## Water Heater Ladder Diagram (150,000–300,000 BTU/hr)\n## Boiler Ladder Diagram (150,000–300,000 BTU/hr)\n## Wiring Notes and Optional Equipment","[{\"question\":\"What power supply voltage is used in these wiring diagrams?\",\"answer\":\"The diagrams show connection to a 120 VAC power supply, feeding a transformer that provides 24 VAC and 24 VDC-related signals for control components.\"},{\"question\":\"Which jumper connections are referenced in the wiring notes?\",\"answer\":\"The notes specify removing the jumper between W1 and R1 to connect a remote operator or MOD-U-PAK, and removing the jumper between X and B for proper series wiring.\"},{\"question\":\"What components are shown as part of the ignition and safety control system?\",\"answer\":\"The diagrams include an ignition module and igniter/ignition transformer, a gas valve, LWCO-related wiring, flow/low air proving switch contacts, and alarm bell/relay contacts tied to control signaling.\"}]","EFFICIENCY BOILERS - WATER HEATERS WIRING DIAGRAMS - LADDER DIAGRAM – WATER HEATER MODELS 150,000-300,000 BTU / HR | PDF"]