Carrier 40QA024-060 Installation, Start-up And Service Instructions Manual

Contents

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.Catalog No. 02-40QA0007-SI Printed in U.S.A. Form 40QA-7SI Pg 1 706 3-06 Replaces: 40QA-5SIBook 1 4Tab 3d 2cInstallation, Start-Up and Service InstructionsCONTENTSPageSAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . .1INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17Step 1 — Complete Pre-InstallationChecks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3• UNPACK UNIT• INSPECT SHIPMENT• BEFORE INSTALLATIONStep 2 — Select Location . . . . . . . . . . . . . . . . . . . . . . . . . . . .4Step 3 — Mount Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6• WOODEN STRUCTURE• NEWLY BUILT CONCRETE SLAB• METAL STRUCTURE• PREVIOUSLY BUILT CONCRETE SLAB• TO MOUNT UNIT• TO INSTALL THERMOSTATStep 4 — Connect Refrigerant Piping. . . . . . . . . . . . . . . .7Step 5 — Connect Condensate Drain Line . . . . . . . . . . .8Step 6 — Make Electrical Connections . . . . . . . . . . . . .10Step 7 — Install Thermostat . . . . . . . . . . . . . . . . . . . . . . . .12Step 8 — Make Connections BetweenIndoor and Outdoor Units . . . . . . . . . . . . . . . . . . . . . . . .15• CHECK ACCURATOR METERING DEVICE• COOLING ONLY SYSTEMS• HEAT PUMP SYSTEMSSTART-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18,19After Extended Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . .18Seasonal Changeovers . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18Adjusting Airflow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18Operating Mode Memory . . . . . . . . . . . . . . . . . . . . . . . . . . .18Automatic Operation (Auto.) Mode. . . . . . . . . . . . . . . . . .18Operating Sequence. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18• FAN OPERATION• COOLING MODE OPERATION• HEAT PUMP OPERATION• DEFROST (Heat Pump Only)• SYSTEM SAFETIES• SPECIAL OPERATION, HEATINGCLEANING AND MAINTENANCE . . . . . . . . . . . . . . . . 19,20Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19Air Filters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19• REMOVE AIR FILTERS• CLEAN OR REPLACE FILTERSClean Indoor Unit Bottom Panel . . . . . . . . . . . . . . . . . . . .20Clean Indoor Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20Clean Outdoor Coil (Outdoor Unit). . . . . . . . . . . . . . . . . .20Clean Condensate Drains . . . . . . . . . . . . . . . . . . . . . . . . . .20• CLEAN OR REPLACE DRAIN PANSERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20Before Calling for Service . . . . . . . . . . . . . . . . . . . . . . . . . .20• IF SYSTEM FAILS TO OPERATEFRESH AIR INSTALLATION OPTION . . . . . . . . . . . . . . . .20Ventilation-Air Accessory . . . . . . . . . . . . . . . . . . . . . . . . . .20TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . .CL1, CL-2SAFETY CONSIDERATIONSInstalling and servicing air-conditioning equipment can behazardous due to system pressure and electrical components.Only trained and qualified service personnel should install orservice air-conditioning equipment.Untrained personnel can perform basic maintenance, suchas cleaning and replacing filters. All other operations should beperformed by trained service personnel. When working on air-conditioning equipment, observe precautions in literature andon tags and labels attached to unit.Follow all safety codes. Wear safety glasses and workgloves. Use quenching cloth for brazing operations. Have fireextinguisher available. Read these instructions thoroughly.Consult local building codes and National Electrical Code(NEC) for special installation requirements.INSTALLATIONInstallation instructions for fan coil units (Fig. 1) are con-tained in this manual. Refer to this manual for proper installa-tion of the complete system. Note that the outdoor units areshipped with installation and service instructions for basic in-stallation of the outdoor section. Be sure to make the connec-tions in Cooling Only Systems and Heat Pump Systems sec-tions on page 15 of this literature so that the unit will operateproperly.Refer to Table 1 for proper system matches.Before installing or servicing system, always turn offmain power to system. There may be more than one dis-connect switch. Turn off accessory heater power if appli-cable. Electrical shock can cause personal injury.40QA024-060Ceiling-Suspended Fan Coil UnitsFig. 1 — Ceiling-Suspended Fan Coil Unit