[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-663897-105":59,"doc-detail-663897-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","propane-heating-schematic-pressurisation-unit-with-expansion-vessel-preliminary-issue-for-comment","PROPANE - Heating Schematic - Pressurisation Unit with Expansion Vessel - Preliminary Issue for Comment","","Heating schematic for a propane heating system featuring pressurisation and an expansion vessel. The diagram outlines multiple low-temperature hot water (LTHW) circuits with flow and return arrangements, including UFH/UFH-to constant temperature variable volume considerations and AHU coil/HIU circuit integration. Notes cover pressure-independent TRVs for improved partial-load pump control, constant temperature variable volume operation, and HIU keep-warm function for a 60/50 circuit maintained via a keep-warm PICV on the return leg.",{"@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/propane-heating-schematic-pressurisation-unit-with-expansion-vessel-preliminary-issue-for-comment/663897/",{"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/propane-heating-schematic-pressurisation-unit-with-expansion-vessel-preliminary-issue-for-comment/663897.png","ImageObject",300,407,{"name":92,"@type":93},"Chumphorn","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-30","2026-10-29",true,{"@type":102,"interactionType":103,"userInteractionCount":14},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What is the purpose of the propane heating schematic?","Question",{"text":112,"@type":113},"It provides a schematic layout for a propane heating system including pressurisation and an expansion vessel, describing the main circuit structure and control approach.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How does the document guide pump control at partial load?",{"text":117,"@type":113},"It suggests using pressure-independent TRVs to achieve better partial load pump control.",{"name":119,"@type":110,"acceptedAnswer":120},"What does the HIU keep warm function cover?",{"text":121,"@type":113},"It specifies a HIU keep-warm function for a 60/50 circuit and notes it can be maintained using a keep-warm PICV on the return leg.","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},663897,1793233725,{"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":14,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":8,"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":81},2336475401981,"https://ap-avatar.wpscdn.com/avatar/22000c94efd8d5204d?x-image-process=image/resize,m_fixed,w_180,h_180&k=1786935347598174694","| \u003Cbr>CS PICVNRV\u003Cbr>CS\u003Cbr>T\u003Cbr>IV IV | LTHW CIRCUIT A F+R;\u003Cbr>EXAMPE RADIATOR CIRCUIT\u003Cbr>WE SUGGEST PRESSURE INDEPENDENT TRVS FOR BETTER PARTIAL LOAD PUMP CONTROL;\u003Cbr>CONSTANT TEMPERATURE VARIABLE VOLUME SYSTEM\u003Cbr>LTHW CIRCUIT B FLOW;\u003Cbr>UFH-UFHTO BE CONSTANT TEMPERATURE VARIABLE VOLUME\u003Cbr>LTHW CIRCUIT B RETURN;\u003Cbr>UFH-UFHTO BE CONSTANT TEMPERATURE VARIABLE VOLUME\u003Cbr>LTHW CIRCUIT C FLOW;\u003Cbr>AHU COILS AND HIU CIRCUIT\u003Cbr>CONSTANT TEMPERATURE VARIABLE VOLUME SYSTEM HIU KEEP WARM FUNCTION TO BE A 60/50 CIRCUIT\u003Cbr>LTHW CIRCUIT C RETURN; AHU COILS AND HIU CIRCUIT\u003Cbr>CONSTANT TEMPERATURE VARIABLE VOLUME SYSTEM\u003Cbr>HIU KEEP WARM FUNCTION TO BE A 60/50 CIRCUIT; THIS CAN BE MAINTAINED BY A KEEP WARM PICV ON RETURN LEG | SYSTEM\u003Cbr>SYSTEM | NOTES\u003Cbr>1. THIS DRAWING IS COPYRIGHT AND SHALL NOT BE REPRODUCED WITHOUT PERMISSION\u003Cbr>2. THIS DRAWING IS TO BE READ IN CONJUNCTION WITH ALL OTHER DISCIPLINES, DRAWINGS, SCHEDULES AND SPECIFICATIONS, LEGENDS AND STANDARD DETAILS\u003Cbr>3. DIMENSIONS GOVERN ON ALL DRAWINGS AND DETAILS.\u003Cbr>SHOULD ANY DISCREPANCIES BE FOUND ON THIS\u003Cbr>DRAWING AND ANY ASSOCIATED DRAWINGS OR SPECIFICATIONS, THIS SHOULD BE BROUGHT TO THE ATTENTION OF CLADE IMMEDIATELY\u003Cbr>4. CONTRACTORS MUST CHECK AND VERIFY ALL INFORMATION / DIMENSIONS / LEVELS IN CONJUNCTION WITH ALL RELEVANT DRAWINGS AND ACTUAL SITE CONDITIONS BEFORE COMPLETING ANY MANUFACTURING / INSTALLATION DRAWINGS OR COMMENCING SITE INSTALLATION WORK\u003Cbr>5. DO NOT SCALE FROM THIS DRAWING |  |  |  |  |\n| --- | --- | --- | --- | --- | --- | --- | --- |\n|  |  |  | P1 | **/**/** | PRELIMINARY ISSUE FOR COMMENT |  |  |\n|  |  |  | Rev Date Details |  |  |  |  |\n|  |  |  | Drawing Title: |  | PROPANE\u003Cbr>HEATING SCHEMATIC |  |  |\n| PRESSURISATION UNIT WITH EXPANSION VESSEL |  |  |  |  |  |  |  |\n|  |  |  | Drawing No.\u003Cbr>- |  |  |  |  |\n|  |  |  | Site Address:\u003Cbr>- |  |  |  |  |\n|  |  |  | Status:\u003Cbr>EXAMPLE |  |  |  |  |\n|  |  |  | Project\u003Cbr>Manager: - |  |  | Designed\u003Cbr>By: - | Date:\u003Cbr>- |\n|  |  |  | Scale\u003Cbr>@ A1: - |  |  | Drawn\u003Cbr>By: - | Revision:\u003Cbr>- |\n|  |  |  | \u003Cbr>Head Office & Registered Office\u003Cbr>Bristol & Bath Science Park, Dirac Crescent, Emersons Green, BRISTOL BS16 7FR\u003Cbr>The Technology Centre\u003Cbr>Unit R3 Gildersome Spur Industrial Estate, Stone Pits Lane, Morley, LEEDS LS27 7JZ Formerly known as A1 Engineering Solutions Ltd |  |  |  |  |","cbCaihLQmXgOeJgJ","https://ap.wps.com/l/cbCaihLQmXgOeJgJ","pdf",151796,"English","# System Notes\n## Drawing control and coordination notes\n## Circuit notes: TRVs, variable volume, HIU keep warm\n## Copyright, verification, and scaling instructions","[{\"question\":\"What is the purpose of the propane heating schematic?\",\"answer\":\"It provides a schematic layout for a propane heating system including pressurisation and an expansion vessel, describing the main circuit structure and control approach.\"},{\"question\":\"How does the document guide pump control at partial load?\",\"answer\":\"It suggests using pressure-independent TRVs to achieve better partial load pump control.\"},{\"question\":\"What does the HIU keep warm function cover?\",\"answer\":\"It specifies a HIU keep-warm function for a 60/50 circuit and notes it can be maintained using a keep-warm PICV on the return leg.\"}]","PROPANE - Heating Schematic - Pressurisation Unit with Expansion Vessel - Preliminary Issue for Comment | PDF"]