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The document emphasizes careful pre-installation reading and preservation of the manual, highlights key steps for indoor and outdoor unit setup, and includes detailed refrigerant piping and electrical checks. Safety precautions distinguish WARNING and CAUTION risks, covering proper wiring, correct parts, secure mounting, refrigerant handling considerations (R32/R290), evacuation, leak checks, and final test run 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/split-type-air-conditioner-installation-manual-model-42qhb070n8-1-installation-guide/662325/",{"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/split-type-air-conditioner-installation-manual-model-42qhb070n8-1-installation-guide/662325.png","ImageObject",300,407,{"name":92,"@type":93},"Nguyễn Văn Học","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-29","2026-10-28",true,{"@type":102,"interactionType":103,"userInteractionCount":29},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What is emphasized before installing or operating the air conditioner?","Question",{"text":112,"@type":113},"Read the manual carefully before installation or operation, and save it for future reference. Correct installation is required to prevent serious damage or injury.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"Who should perform the installation and repairs?",{"text":117,"@type":113},"Installation must be performed by an authorized dealer or specialist. For repair or maintenance, contact an authorized service technician.",{"name":119,"@type":110,"acceptedAnswer":120},"What key safety requirements apply to electrical work and wiring?",{"text":121,"@type":113},"Follow all local and national wiring standards, use an independent circuit and single outlet, and use specified cables connected tightly and securely. Proper arrangement is needed so the control board cover can close correctly.","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},662325,1793211788,{"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":29,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":36,"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":143},1374402739827,"https://ap-avatar.wpscdn.com/avatar/14000c97e7351f1a627?x-image-process=image/resize,m_fixed,w_180,h_180&k=1787885694763230660","SPLIT-TYPE AIR CONDITIONER INSTALLATION MANUAL  \nMODEL  \n42QHB020N8-1/38QHB020N8-1  \n42QHB026N8-1/38QHB026N8-1  \n42QHB035N8-1/38QHB035N8-1  \n42QHB050N8-1/38QHB050N8-1  \n42QHB070N8-1/38QHB070N8-1  \n42QHB080N8-1/38QHB080N8-1  \n42QHB090N8-1/38QHB090N8-1  \nIMPORTANT NOTE:  \nRead this manual carefully before installing or operating your new air conditioning unit. Make sure to save this manual for future reference.  \nTable of Contents  \nInstallation Manual  \n 0   \n 1   \n 2   \n 3   \nSafety Precautions........................... 4  \nAccessories........................................6  \nInstallation Summary-Indoor Unit........8  \nUnit Parts..........................................10  \nIndoor Unit Installation........ 11  \n1. Select installation location.......................... 11  \n4  \n5  \n2. Attach mounting plate to wall....................12  \n3. Drill wall hole for connective piping............12  \n4. Prepare refrigerant piping...........................14  \n5. Connect drain hose....................................15  \n6. Connect signal cable.................................. 17  \n7. Wrap piping and cables..............................18  \n8. Mount indoor unit..................................... 18  \nOutdoor Unit Installation...20  \n1. Select installation location..................20  \n2. Install drain joint................................ 21  \n3. Anchor outdoor unit..........................22  \n4. Connect signal and power cables.......23  \n6 Refrigerant Piping Connection........ 25  \nA. Note on Pipe Length................................................ 25  \nB. Connection Instructions –Refrigerant Piping............. 25  \n1. Cut pipe.............................................................. 25  \n2. Remove burrs...................................................... 26  \n3. Flare pipe ends.................................................... 26  \n4. Connect pipes..................................................... 27  \nCaution: Risk of fire  \n(for R32/R290 refrigerant ony )  \nAir Evacuation................... 29  \n1. Evacuation Instructions...................... 29  \n2. Note on Adding Refrigerant...............30  \n7  \nMC  \n8 Electrical and Gas Leak Checks........ 31  \n 9 Test Run............................................ 32  \n10 European Disposal Guidelines........34  \n11 Information servicing .................... 35  \nSafety Precautions  \nRead Safety Precautions Before Installation  \nIncorrect installation due to ignoring instructions can cause serious damage or injury.  \nThe seriousness of potential damage or injuries is classified as either a WARNING or CAUTION.  \n| |  WARNING |\n| --- | --- |\n|  Do not modify the length of the power supply cord or use an extension cord to power the unit. |  |\n| Do not  share the electrical outlet with other appliances. Improper or insufficient power supply can cause fire or electrical shock.\u003Cbr> When connecting refrigerant piping, do not let substances or gases other than the specified refrigerant enter the unit. The presence of other gases or substances will lower the unit’s capacity, and can cause abnormally high pressure in the refrigeration cycle. This can cause explosion and injury.\u003Cbr> Do not allow children to play with the air conditioner. Children must be supervised around the unit at all times.\u003Cbr>1. Installation must be performed by an authorized dealer or specialist. Defective installation can cause water leakage, electrical shock, or fire.\u003Cbr>2. Installation must be performed according to the installation instructions. Improper installation can cause water leakage, electrical shock, or fire. (In North America,installation must be performed in accordance with the requirement of NEC and CEC by authorized personnel only.)\u003Cbr>3. Contact an authorized service technician for repair or maintenance of this unit.\u003Cbr>4. Only use the included accessories, parts, and specified parts for installation. Using non-standard parts can cause water leakage, electrical shock, fire, and can caus","cbCailAqCpbGfVJA","https://ap.wps.com/l/cbCailAqCpbGfVJA","pdf",12950556,"English","# Safety Precautions\n# Accessories\n# Installation Summary - Indoor Unit\n## Unit Parts\n## Indoor Unit Installation\n## Outdoor Unit Installation\n# Refrigerant Piping Connection\n# Air Evacuation\n# Electrical and Gas Leak Checks\n# Test Run\n# European Disposal Guidelines\n# Information servicing","[{\"question\":\"What is emphasized before installing or operating the air conditioner?\",\"answer\":\"Read the manual carefully before installation or operation, and save it for future reference. Correct installation is required to prevent serious damage or injury.\"},{\"question\":\"Who should perform the installation and repairs?\",\"answer\":\"Installation must be performed by an authorized dealer or specialist. For repair or maintenance, contact an authorized service technician.\"},{\"question\":\"What key safety requirements apply to electrical work and wiring?\",\"answer\":\"Follow all local and national wiring standards, use an independent circuit and single outlet, and use specified cables connected tightly and securely. Proper arrangement is needed so the control board cover can close correctly.\"}]","SPLIT-TYPE AIR CONDITIONER INSTALLATION MANUAL - Model 42QHB070N8-1 - Installation guide | PDF",101]