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Provides instructions for programming and reviewing control settings, operating mode display, temperature control configuration, leak testing, refrigerant charging, start-up procedures, defrost and alarms, diagnostics, sensor checks, default settings, wiring diagrams, preventive maintenance, and service record tracking.",{"@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/beacon-ii-refrigeration-systems-installation-and-operation-manual/652744/",{"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/beacon-ii-refrigeration-systems-installation-and-operation-manual/652744.png","ImageObject",300,407,{"name":92,"@type":93},"Aldword","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-27","2026-10-24",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 wire gauge and power supply requirements apply to low-voltage connections?","Question",{"text":112,"@type":113},"Use a minimum 18 gauge wire for all low-voltage connections. The Beacon II board receives 24 VAC power from a transformer mounted in the electrical end of each evaporator.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How should slave evaporators be programmed?",{"text":117,"@type":113},"Program ALL slave evaporators as SLAVES.",{"name":119,"@type":110,"acceptedAnswer":120},"What precautions are required for brazing and leak testing around sensors and pressure limits?",{"text":121,"@type":113},"Remove the suction line temperature sensor before brazing, then reinstall it after brazing and cooling and insulate when finished. Do not leak test above 150 PSI; if testing must exceed 150 psig, disconnect the transducer from the suction header and reconnect after testing.","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},652744,1793007004,{"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":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},2336478940917,"https://ap-avatar.wpscdn.com/davatar_6f874abed73319feea01a86fa6f0fab8","|  | | Beacon II™ Refrigeration Systems |  |\n| --- | --- | --- | --- |\n|  | H-IM-79E September 2007 Part No. 25001401 |  |  |\n|  | Replaces H-IM-79D (2/04)\u003Cbr>Installation and Operation Manual\u003Cbr>\u003Cbr>| Table of Contents\u003Cbr>Beacon II™ Board Layout ........................................................ 3\u003Cbr>Installation Tips ........................................................................ 4\u003Cbr>Refrigerant Line Brazing ........................................................... 5\u003Cbr>Power Supply ........................................................................... 5\u003Cbr>Wiring ....................................................................................... 5\u003Cbr>Multiple Evaporator Configuration ........................................... 6\u003Cbr>Box Temperature Control Settings ........................................... 7\u003Cbr>Leak Testing ............................................................................. 7\u003Cbr>Refrigerant Charging ............................................................... 7\u003Cbr>Start-Up Operation   8-11\u003Cbr>Operating Mode Display......................................................... 11\u003Cbr>Programming and Reviewing Settings and Changes ....... 12-13\u003Cbr>Program Review Button\u003Cbr>Select Button\u003Cbr>Enter Button\u003Cbr>Monitoring Items .................................................................... 14\u003Cbr>Monitor Button\u003Cbr>Force Defrost Button\u003Cbr>Force Service Button\u003Cbr>Reset Time Button\u003Cbr>Clear/Test Button\u003Cbr>Locking The Beacon II Board ................................................. 15\u003Cbr>Status Indicator LED   15-16\u003Cbr>Low Ambient Operation   16\u003Cbr>Pumpdown ........................................................................ 16-17\u003Cbr>Defrost   17-18\u003Cbr>Alarms   18\u003Cbr>Error Indicator   19\u003Cbr>Checking Operation of Expansion Valve ........................... 20-21\u003Cbr>Power Failures   21\u003Cbr>Spare Sensor Terminals   21\u003Cbr>Checking Sensors .................................................................. 21\u003Cbr>Sensor Resistance/Temperature Table   22\u003Cbr>System Defaults ..................................................................... 22\u003Cbr>InterLink Replacement Parts List ........................................... 23\u003Cbr>Operational Limits   23\u003Cbr>Expansion Valve Capacity ...................................................... 24\u003Cbr>Diagnostics........................................................................ 24-27\u003Cbr>Wiring Diagrams ................................................................ 28-33\u003Cbr>Preventive Maintenance   34 |  |\n|  | | Service Record   35-36 |  |\n|  |  |  |  |\n\n2 © 2007, Heatcraft Refrigeration Products LLC  \nBeacon II™ Board Layout  \nBEACON II™ BOARD  \nHeater Relay  \nLED Display  \nRoom Sensor  \nSelection Buttons  \nSuction Pressure  \n􀀳  \nInstallation  \nInstallation Tips  \n• Use a minimum 18 gauge wire for all low voltage connections  \n• The Beacon II board gets its 24 VAC power supply from a transformer mounted in the electrical end of each evaporator. On 208-240 volt systems the multi-tap transformer is shipped from our factory wired for 240 volts. If your supply voltage is 208 volt you must change to the 208 volt tap on the transformer.  \nNOTE: On multiple evaporators, since a transformer is in each evaporator, the voltage tap must be set on each evaporator.  \n• Refer to wiring schematic shipped on units for unit wiring. Schematics in this Installation & Operation Manual are typical wiring schematics only.  \n• Program ALL slave evaporators as SLAVES.  \n• Evaporators are shipped from our factory with a preset box setpoint temperature of 35°F for air defrost and-10°F for electric defrost. If your box setpoint temperature requirements are different this must be set using directions outlined under “Room Temperature Control”.  \n• The suction line temperature sensor MUST be removed from the suction line before brazing the suction tubing. The sensor MUST then be reinstalled on the suction  \nline after brazing is completed and the tubing has cooled. I","cbCaiaPFncOgiyVd","https://ap.wps.com/l/cbCaiaPFncOgiyVd","pdf",1190800,36,"English","# Beacon II™ Board Layout\n# Installation Tips\n# Refrigerant Line Brazing\n# Power Supply\n# Wiring\n# Multiple Evaporator Configuration\n# Box Temperature Control Settings\n# Leak Testing\n# Refrigerant Charging\n# Start-Up Operation\n# Operating Mode Display\n# Programming and Reviewing Settings and Changes\n# Monitoring Items\n# Locking The Beacon II Board\n# Status Indicator LED\n# Low Ambient Operation\n# Pumpdown\n# Defrost\n# Alarms\n# Error Indicator\n# Checking Operation of Expansion Valve\n# Power Failures\n# Spare Sensor Terminals\n# Checking Sensors\n# Sensor Resistance/Temperature Table\n# System Defaults\n# InterLink Replacement Parts List\n# Operational Limits\n# Expansion Valve Capacity\n# Diagnostics\n# Wiring Diagrams\n# Preventive Maintenance\n# Service Record","[{\"question\":\"What wire gauge and power supply requirements apply to low-voltage connections?\",\"answer\":\"Use a minimum 18 gauge wire for all low-voltage connections. The Beacon II board receives 24 VAC power from a transformer mounted in the electrical end of each evaporator.\"},{\"question\":\"How should slave evaporators be programmed?\",\"answer\":\"Program ALL slave evaporators as SLAVES.\"},{\"question\":\"What precautions are required for brazing and leak testing around sensors and pressure limits?\",\"answer\":\"Remove the suction line temperature sensor before brazing, then reinstall it after brazing and cooling and insulate when finished. Do not leak test above 150 PSI; if testing must exceed 150 psig, disconnect the transducer from the suction header and reconnect after testing.\"}]","Beacon II™ Refrigeration Systems - Installation and Operation Manual | PDF",1792882327,91]