Carrier 40QNB Installation, Start-up And Service Instructions Manual
Also see for 40QNB018: Owner's manualInstallation, Start-Up and Service Instructions
                            |
Installation, Start-Upand Service InstructionsCONTENTSPageSAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . 1GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1,2INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14Step 1 − Complete Pre-Installation Checks . . . . . . . 2• UNPACK UNIT• INSPECT SHIPMENTStep 2 − Select Location . . . . . . . . . . . . . . . . . . . . . . . 2Step 3 − Mount Mounting Bracket on Wall . . . . . . . . 5Step 4 − Connect Refrigerant Piping . . . . . . . . . . . . . 5Step 5 − Connect Condensate Drain Line . . . . . . . . 11Step 6 − Make Electrical Connections . . . . . . . . . . . 12Step 7 − Make Connections to Outdoor Unit . . . . . 13• COOLING-ONLY SYSTEMS• HEAT PUMP SYSTEMSStep 8 − Install Fan Coil Unit Onto MountingBracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-1740QN Control System . . . . . . . . . . . . . . . . . . . . . . . . . 14After Extended Shutdowns . . . . . . . . . . . . . . . . . . . . . 15Seasonal Changeovers . . . . . . . . . . . . . . . . . . . . . . . . 15To Turn The Unit On and Off . . . . . . . . . . . . . . . . . . . 15Adjusting Airflow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Operating Mode Memory . . . . . . . . . . . . . . . . . . . . . . . 15Automatic Operation (Auto) Mode . . . . . . . . . . . . . . . 15Operating Fault Diagnosis . . . . . . . . . . . . . . . . . . . . . 15Microprocessor Control Operation . . . . . . . . . . . . . . 15CLEANING AND MAINTENANCE . . . . . . . . . . . . . . . 18,19Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18To Install or Replace Remote ControllerBatteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18To Set the Current Time . . . . . . . . . . . . . . . . . . . . . . . 19To Remove and Clean or Replace Air Filters . . . . . . 19• TO REMOVE AIR FILTERS• TO CLEAN OR REPLACE FILTERSTo Clean Indoor Unit Front Panel . . . . . . . . . . . . . . . 19To Clean Indoor Coil . . . . . . . . . . . . . . . . . . . . . . . . . . 19To Clean Outdoor Coil (Outdoor Unit) . . . . . . . . . . . 19Cleaning Condensate Drains . . . . . . . . . . . . . . . . . . . 19SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Diagnostic Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20System Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20• THERMISTOR TESTS• THERMISTORS• COMPRESSOR FAILURE• REVERSING VALVE FAILURE (38BK Only)System Safeties and Interlocks . . . . . . . . . . . . . . . . . 20• INDOOR FAN FAILURE• COMPRESSOR SHORT-CYCLING PROTECTION• INDOOR COIL FREEZE PROTECTION(Cooling or Dehumidification Mode Only)• INDOOR COIL HIGH-TEMPERATUREPROTECTION (Heat Pump Systems Only)TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . 20-26START-UP CHECKLIST . . . . . . . . . . . . . . . . . . CL-1,CL-2SAFETY CONSIDERATIONSInstalling and servicing air-conditioning equipment can behazardous due to system pressure and electrical compo-nents. Only trained and qualified service personnel shouldinstall or service air-conditioning equipment.Untrained personnel can perform basic maintenance, suchas cleaning and replacing filters. All other operations shouldbe performed by trained service personnel. When workingon air conditioning equipment, observe precautions in lit-erature and on tags and labels attached to unit.Follow all safety codes. Wear safety glasses and work gloves.Use quenching cloth for brazing operations. Have fire ex-tinguisher available. Read these instructions thoroughly. Con-sult local building codes and National Electrical Code (NEC)for special installation requirements.Before installing or servicing system, always turn offmain power to system. There may be more than one dis-connect switch. Turn off indoor fan coil power if ap-plicable. Electrical shock can cause personal injury.GENERALThe Carrier 40QNH heat pump high wall fan coil units(Fig. 1) come with supplemental electric heat. If your ap-plication requires heating, heat pump units must be used, bothoutdoors and indoors. See Table 1 for recommended systemcombinations.Fig. 1 — Typical 40QNH High Wall Fan Coil Unit40QNB,QNH018,024High Wall Fan Coil UnitsManufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.Book 1 4Tab 3e 2fPC 111 Catalog No. 534-003 Printed in U.S.A. Form 40QN-4SI Pg 1 5-99 Replaces: 40QN-1SI |
Related manuals for Carrier 40QNB018
manualsdatabase
Your AI-powered manual search engine