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The manual describes how Simplicity® controls operate as a digital system, consolidating monitoring and control functions previously handled by discrete relays and interlocking hardware. It covers recommended installation and technical aids, a structured table of contents, digital communications, programming options, operating modes and parameters (including metric operation), sequence of operation for heating and cooling, sensor and VAV operation, scheduling, and troubleshooting with status and failure-mode guidance.",{"@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/millennium-25-40-ton-single-package-commercial-rooftop-unit-equipped-with-simplicity-controls-technical-application-and-programming-guide/640434/",{"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/millennium-25-40-ton-single-package-commercial-rooftop-unit-equipped-with-simplicity-controls-technical-application-and-programming-guide/640434.png","ImageObject",300,407,{"name":92,"@type":93},"RuangKosong","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 does the Simplicity® control system do on the Millennium® 25-40 ton rooftop unit?","Question",{"text":112,"@type":113},"It performs control and monitoring functions that were previously handled by separate discrete relays, controls, and interlocking hardware, reducing manufacturing, service, and maintenance costs.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"Which topics are covered by the manual besides the control overview?",{"text":117,"@type":113},"The manual covers programming options, startup and settable parameters, sequences of operation for different operating modes, and device/sensor and VAV operation, plus troubleshooting and failure modes.",{"name":119,"@type":110,"acceptedAnswer":120},"How does the manual approach troubleshooting of a Simplicity® control system?",{"text":121,"@type":113},"It provides troubleshooting guidance including a status LED chart, failure modes and default operation, sensor failure handling, system errors, and related reference tables.","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},640434,1793051747,{"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},962090883219,"https://ap-avatar.wpscdn.com/davatar_276721f389ce27ea32af1340a28f341c","351579-YTS-C-0111  \nTECHNICAL APPLICATION  \nAND  \nPROGRAMMING GUIDE  \nMILLENNIUM® SINGLE PACKAGE ROOFTOP UNITS  \n25, 30 & 40 TON EQUIPPED WITH SIMPLICITY® ELITE CONTROLS  \nMILLENNIUM® 25-40 TON SINGLE PACKAGE COMMERCIAL ROOFTOP UNIT EQUIPPED WITH SIMPLICITY® CONTROLS  \nThis manual includes application, programming and service procedures for the Millennium® 25-40 Ton Single Package Commercial Rooftop Unit equipped with Simplicity® Controls. These procedures are the same for all 25-40 Ton Millennium® Rooftop units in this series except as noted.  \nThis manual covers Simplicity® controls only, for unit installation information please refer to the following.  \nRECOMMENDED TECHNICAL AND INSTALLATION AIDS  \nMillennium® 25-40 Ton Single Package Installation and Operation Manual-524158  \nMillennium® 25-40 Ton Technical Guide-246837  \nISO 9001  \nCertified Quality  \nManagement System  \nTABLE OF CONTENTS  \nMILLENNIUM® 25-40 TON SINGLE PACKAGE COMMERCIAL ROOFTOP UNIT EQUIPPED WITH SIMPLICITY® CONTROLS .................... 1  \nRECOMMENDED TECHNICAL AND INSTALLATION AIDS ........................ 1  \nTHE MILLENNIUM® SIMPLICITY® CONTROL .... 3  \nINTRODUCTION AND OVERVIEW ................. 3  \nDIGITAL LINGO ................................ 4  \nANALOG TO DIGITAL CONVERTER ............... 4  \nCOMMUNICATIONS BUS ........................ 5  \nOPTIONAL Simplicity® LINC TRANSLATOR.......... 5  \nCOMPONENT DESCRIPTION..................... 5  \nSIMPLICITY® PROGRAMMING OPTIONS ....... 11  \nINTERACTING THROUGH THE MILLENNIUM® SIMPLICITY® ................................ 11  \nINITIAL STARTUP OPTIONS .................... 11  \nMETRIC OPERATION (ENGLISH) ................ 11  \nSETTABLE SYSTEM PARAMETERS ........... 11  \nMILLENNIUM® SEQUENCE OF OPERATION .... 18  \nOVERVIEW .................................. 18  \nRUN SEQUENCE.............................. 18  \nUNIT CONTROLS SEQUENCE ................... 18  \nVARIABLE AIR VOLUME UNIT (VFD & IGV) ........ 20  \nOCCUPIED / UNOCCUPIED / MORNING WARM-UP . 21  \nUNIT CONTROLS ............................. 21  \nHEAD PRESSURE CONTROL ................... 26  \nSEQUENCE OF OPERATION-FOR HEAD PRESSURE CONTROL................................... 26  \nINTELLI-START ............................... 27  \nDEVICES AND RULES ......................... 27  \nCOMFORT VENTILATION MODE ................. 28  \nHYDRONIC HEAT ............................. 29  \nCOOLING LOCKOUT ON OAT ................... 29  \nWATER COIL FREEZE STAT (FSI) ................ 29  \nCV OPERATION .............................. 29  \nTHERMOSTAT OPERATION FOR COOLING WITH Y1, Y2, Y3 AND Y4 INPUTS ........................ 30  \nOPERATION FOR HEATING WITH W1, W2, AND W3  \nINPUTS ..................................... 30  \nSENSOR OPERATION ......................... 30  \nTYPES OF SPACE SENSORS ................... 31  \nVAV OPERATION ............................. 32  \nSUPPLY DUCT PRESSURE CONTROL ALGORITHM. 34  \nMORNING WARM UP / VAV OCCUPIED HEATING CONTROL ALGORITHM ....................... 34  \nCONTROLLING EXCESSIVE SAT (SUPPLY AIR TEMPERATURE) .............................. 35  \nSAT SETPOINTS USED DURING COOLING WITH ECONOMIZER OPERATION .....................36  \nDEMAND VENTILATION .........................39  \nEXHAUST OPERATION .........................40  \nSCHEDULING OPERATION ......................41  \nCOMPRESSOR STATUS MONITORING ............41  \nTROUBLESHOOTING A MILLENNIUM® SIMPLICITY® CONTROL .................... 43  \nSTATUS LED CHART ...........................43  \nFAILURE MODES AND DEFAULT OPERATION ......43  \nSENSOR FAILURES AND DEFAULT OPERATION ....43  \nSYSTEM ERRORS .............................44  \nLIST OF FIGURES  \nFig. \\#  Pg. \\#  \n1 SIMPLICITY® CONTROLLER ................... 3  \n2 SIMPLICITY® CONTROLS PUSH BUTTONS ...... 3  \n3 ANALOG TO DIGITAL CONVERTER ............. 4  \n4 VFD CONTROL WIRING ....................... 8  \n5 SEQUENCE OF SETTING THE SET POINTS ..... 14  \n6 COMFORT VENTILATION ECONOMIZER CONTROL .................................. 28  \n7 SAT CONTROL BAN","cbCaiqOJrVpCdkOq","https://ap.wps.com/l/cbCaiqOJrVpCdkOq","pdf",1438799,44,"English","# THE MILLENNIUM® SIMPLICITY® CONTROL\n## INTRODUCTION AND OVERVIEW\n## DIGITAL LINGO\n## ANALOG TO DIGITAL CONVERTER\n## COMMUNICATIONS BUS\n## OPTIONAL Simplicity® LINC TRANSLATOR\n## COMPONENT DESCRIPTION\n## SIMPLICITY® PROGRAMMING OPTIONS\n## INITIAL STARTUP OPTIONS\n## METRIC OPERATION (ENGLISH)\n## SETTABLE SYSTEM PARAMETERS\n## MILLENNIUM® SEQUENCE OF OPERATION\n## TROUBLESHOOTING A MILLENNIUM® SIMPLICITY® CONTROL","[{\"question\":\"What does the Simplicity® control system do on the Millennium® 25-40 ton rooftop unit?\",\"answer\":\"It performs control and monitoring functions that were previously handled by separate discrete relays, controls, and interlocking hardware, reducing manufacturing, service, and maintenance costs.\"},{\"question\":\"Which topics are covered by the manual besides the control overview?\",\"answer\":\"The manual covers programming options, startup and settable parameters, sequences of operation for different operating modes, and device/sensor and VAV operation, plus troubleshooting and failure modes.\"},{\"question\":\"How does the manual approach troubleshooting of a Simplicity® control system?\",\"answer\":\"It provides troubleshooting guidance including a status LED chart, failure modes and default operation, sensor failure handling, system errors, and related reference tables.\"}]","MILLENNIUM® 25-40 TON SINGLE PACKAGE COMMERCIAL ROOFTOP UNIT EQUIPPED WITH SIMPLICITY® CONTROLS - Technical Application and Programming Guide | PDF",1792709139,111]