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Sheet","","T6861系列大型LCD数字温控器用于风机盘管系统的三速风机与阀门应用控制。支持两管或四管，并可选择仅制冷/仅制热手动切换以及四管手动或自动切换，具备通风模式、手动/自动三速风机控制与水阀控制。提供LCD显示与图标界面、定时开/关、能耗节能模式、冻结保护、按键锁定及CPH（每小时循环）等功能，可通过安装设置保留断电设置，并支持远端温度传感器与°C/°F单位切换。",{"@graph":69,"@context":126},[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/t6861-series-large-lcd-digital-thermostat-data-sheet/640909/",{"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/t6861-series-large-lcd-digital-thermostat-data-sheet/640909.png","ImageObject",300,407,{"name":92,"@type":93},"WPS_1786070896","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-27","2026-10-22",true,{"@type":102,"interactionType":103,"userInteractionCount":14},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118,122],{"name":109,"@type":110,"acceptedAnswer":111},"T6861数字温控器主要用于哪类系统？","Question",{"text":112,"@type":113},"T6861为风机盘管（fan coil）系统设计，用于三速风机与阀门的应用控制。它可配置2-pipe或4-pipe，并支持对应的切换模式。","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"风机的手动与自动三速控制如何选择？",{"text":117,"@type":113},"可在风机按钮选择低/中/高或自动（AUTO）。风机既可在手动模式下按选定速度运行，也可在自动模式下根据房间温度与设定值的差值调整速度。",{"name":119,"@type":110,"acceptedAnswer":120},"CPH（Cycle per Hour）功能的作用是什么？",{"text":121,"@type":113},"CPH用于更精确的温度控制，即便温度接近设定值（小于½ P-band差值），也可在每小时内让阀门多次开闭。默认供暖为4、制冷为3，可在安装设置中更改。",{"name":123,"@type":110,"acceptedAnswer":124},"遥控温度传感器与温度显示设置有哪些要求？",{"text":125,"@type":113},"T6861可通过远端温度传感器（NTC20K）进行控制，并可选择显示房间温度或设定值；还可在安装设置过程中同时显示房间温度与相关信息。","https://schema.org",{"og:url":83,"og:type":128,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":130,"canonical":83},"index,follow",{"doc_id":132,"site_id":62},640909,1793099717,{"code":4,"msg":5,"data":135},{"doc_id":132,"user_id":136,"nickname":92,"user_avatar":137,"doc_module":4,"category_id":29,"category_name":30,"doc_title":65,"doc_description":67,"doc_content":138,"file_id":139,"file_url":140,"file_type":141,"file_size":142,"view_count":14,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":34,"language":143,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":144,"faqs":145,"seo_title":146,"seo_description":67,"update_tm":147,"read_time":148},549768072016,"https://ap-avatar.wpscdn.com/davatar_155a257f0dc6eb9ab79c44ca47cae57d","T6861 Series Large LCD Digital Thermostat 110/220 VAC  \n2-pipe/4-pipe fan coil control  \nData sheet  \nApplication  \nT6861 digital thermostats a re designed for application of 3-speed fan and valves in fan coil system.  \nIncluding:  \n2-pipe cool only/heat only/manual changeover and 4-pipe manual or automatic changeover  \nVentilation mode  \nManual or automatic 3-speed fan control Water valve control  \nFan speed can be selected to automatic or manual 3-speed control mode.  \nIn ventilation mode, fan only support manual speed control.  \nFeatures  \n• Super modern appearance design, suitable for office, hotel and residential building  \n• Horizontal and vertical model available for variant application  \n• Slim design, direct installation on 86 size box  \n• Stylish and elegant blue/green backlight with blue/ green colour ring  \n• 2-pipe/4-pipe integrated into one unit with easy configuration  \n• Big LCD display with English and icons  \n• Easy to install and set-up  \n• Time on/off function  \n• Selectable room temperature or setpoint display  \n• Manual or automatic fan speed selection  \n• Remote temperature sensor  \n• Energy saving mode activation by button press or dry contact (key card)  \n• Cycle per Hour (CPH) function  \n• Adjustment of display room temperature  \n• Temperature unit either oC or oF  \n• User setting can be kept when power off  \n• Freezing protection function available  \n• Lock or unlock keys or part of keys in Installer Setup  \n• Heat and cool setpoint limitation for energy saving  \nModel summary  \n\n| Model | Horizontal/\u003Cbr>Vertical | Backlight | Color Ring | Time\u003Cbr>on/off | 2-pipe/\u003Cbr>4-pipe | Power supply\u003Cbr>（V） | Energy\u003Cbr>Saving | Ventilation | Manual/\u003Cbr>Automatic Fan | Remote\u003Cbr>Sensor |\n| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |\n| T6861H2BB\u003Cbr>T6861H2WB | Horizontal | Blue | Blue\u003Cbr>White | Y | 2/4 | 220 | Y | Y | Y | Y |\n| T6861V2BB\u003Cbr>T6861V2WB | Vertical | Blue | Blue\u003Cbr>White | Y | 2/4 | 220 | Y | Y | Y | Y |\n| T6861H2GG\u003Cbr>T6861H2WG | Horizontal | Green | Green\u003Cbr>White | Y | 2/4 | 220 | Y | Y | Y | Y |\n| T6861V2GG\u003Cbr>T6861V2WG | Vertical | Green | Green\u003Cbr>White | Y | 2/4 | 220 | Y | Y | Y | Y |\n| T6861H1BB\u003Cbr>T6861H1WB | Horizontal | Blue | Blue\u003Cbr>White | Y | 2/4 | 110 | Y | Y | Y | Y |\n| T6861V1BB\u003Cbr>T6861V1WB | Vertical | Blue | Blue\u003Cbr>White | Y | 2/4 | 110 | Y | Y | Y | Y |\n| T6861H1GG\u003Cbr>T6861H1WG | Horizontal | Green | Green\u003Cbr>White | Y | 2/4 | 110 | Y | Y | Y | Y |\n| T6861V1GG\u003Cbr>T6861V1WG | Vertical | Green | Green\u003Cbr>White | Y | 2/4 | 110 | Y | Y | Y | Y |\n\nNote: Horizontal models are taken as samples for display, operation and installation pictures shown in below parts.  \nAPH07CH04-R2001EN  \n􀀒  \nMechanical design Thermostat appearnce  \nLCD display  \nFunction  \nValve control  \nThermostat acquires the room temperature via its integrated sensor or external temperature sensor and maintains the setpoint by delivering on/off valve control commands output.  \nFan Operation  \nPRESS THE FAN BUTTON TO SELECT LOW, MED, HIGH OR AUTO  \nFan can be selected as manual or automatic 3-speed operation . In Manual mode, the fan is switched to the selected speed via control output Gh, Gm, Gl. While in automatic mode, fan speed depends on the difference between room temperature and setpoint. When room temperature reaches set point, valve will be closed and meanwhile, fan will be closed either.  \nDifference between RT and SP  \nFan speed ramping control algorithm  \nFour-pipe application  \nSystem will have a fixed deadband set in ISU between heating and cooling setpoints for Automatic Change Over (ACO) configured thermostats.While the heating and cooling set points determine the dead band.  \nIf the difference between heating and cooling set points is less than the dead band set in ISU, then the dead band set in ISU is enforced. When adjusting the cooling set point, conflicts will be resolved by moving the heating set point out of the way of the cooling set point (heating set point=cooling set p","cbCaic8EdQ5a2wOf","https://ap.wps.com/l/cbCaic8EdQ5a2wOf","pdf",651202,"English","# Application\n## Key control modes\n# Features\n## Display, energy saving, safety\n# Model summary\n# Function details\n## Valve and fan operation\n## Four-pipe auto changeover\n## CPH and time on/off\n## Backlight and remote sensor\n## Keypad lock","[{\"question\":\"T6861数字温控器主要用于哪类系统？\",\"answer\":\"T6861为风机盘管（fan coil）系统设计，用于三速风机与阀门的应用控制。它可配置2-pipe或4-pipe，并支持对应的切换模式。\"},{\"question\":\"风机的手动与自动三速控制如何选择？\",\"answer\":\"可在风机按钮选择低/中/高或自动（AUTO）。风机既可在手动模式下按选定速度运行，也可在自动模式下根据房间温度与设定值的差值调整速度。\"},{\"question\":\"CPH（Cycle per Hour）功能的作用是什么？\",\"answer\":\"CPH用于更精确的温度控制，即便温度接近设定值（小于½ P-band差值），也可在每小时内让阀门多次开闭。默认供暖为4、制冷为3，可在安装设置中更改。\"},{\"question\":\"遥控温度传感器与温度显示设置有哪些要求？\",\"answer\":\"T6861可通过远端温度传感器（NTC20K）进行控制，并可选择显示房间温度或设定值；还可在安装设置过程中同时显示房间温度与相关信息。\"}]","T6861 Series Large LCD Digital Thermostat - Data Sheet | PDF",1792712111,18]