Carrier 48GP Series Installation, Start-up, And Operating Instructions Manual

Also see for 48GP Series: Operating and maintaining guide

Carrier 48GP Series Installation, Start-up, And Operating Instructions Manual Manual pdf 1 page image

48GP, 48GPNSingle Package Gas Heating/Electric Cooling UnitsWith Puron® (R-410A) RefrigerantInstallation, Start-Up, and Operating Instructions48GP, 48GPN Sizes 024-060NOTE: Read the entire instruction manual before starting theinstallation.Index PageSAFETY CONSIDERATIONS .....................................................1RULES FOR SAFE INSTALLATION AND OPERATION....1-2RECEIVING AND INSTALLATION ..........................................2CHECK EQUIPMENT ..................................................................2PROVIDE UNIT SUPPORT .........................................................2Roof Curb ............................................................................2Slab Mount ..........................................................................2Ground Mount .....................................................................2FIELD FABRICATE DUCTWORK.............................................2PROVIDE CLEARANCES ........................................................2-3RIG AND PLACE UNIT.......................................................3, 6-7CONNECT CONDENSATE DRAIN ...........................................7INSTALL FLUE HOOD ...............................................................7INSTALL GAS PIPING.............................................................7-8INSTALL DUCT CONNECTIONS .......................................8, 10INSTALL ELECTRICAL CONNECTIONS.........................11-13High-Voltage Connections ................................................11Special Procedures for 208-V Operation..........................11Control Voltage Connections ............................................12Standard Connection..........................................................12Heat Anticpator Setting.....................................................13Transformer Protection......................................................13PRE-START-UP ..........................................................................13START-UP..............................................................................13-22MAINTENANCE....................................................................22-26REFRIGERANT SYSTEM..........................................................26QUICK REFERENCE GUIDE....................................................27TROUBLESHOOTING ..........................................................28-30START-UP CHECKLIST............................................................31NOTE TO INSTALLER — Before the installation, READTHESE INSTRUCTIONS CAREFULLY AND COMPLETELY.Also, make sure the User’s Manual and Replacement Guide areleft with the unit after installation. the furnace is NOT to be usedfor temporary heating of buildings or structures under construc-tion.SAFETY CONSIDERATIONSInstallation and servicing of air-conditioning equipment can behazardous due to system pressure and electrical components. Onlytrained and qualified personnel should install, repair, or serviceair-conditioning equipment.Untrained personnel can perform basic maintenance functions ofcleaning coils and filters. All other operations should be performedby trained service personnel. When working on air-conditioningequipment, observe precautions in the literature, tags and labelsattached to the unit, and other safety precautions that may apply.Follow all safety codes. Wear safety glasses and work gloves. Usequenching cloth for unbrazing operations. Have fire extinguisheravailable for all brazing operations.RULES FOR SAFE INSTALLATION AND OPERATIONImproper installation, adjustment, alteration, service, mainte-nance, or use can cause carbon monoxide poisoning, fire, oran explosion which can result in serious injury or unitdamage. Consult a qualified installer, service agency, or gassupplier for information or assistance. The qualified installeror agency must use only factory-authorized kits or accessorieswhen modifying this product.Understand the signal words —DANGER, WARNING, andCAUTION. DANGER identifies the most serious hazards whichwill result in severe serious injury or death. WARNING indicatesa condition that could result in serious injury or death. CAUTIONis used to identify unsafe practices which would result in minor ormoderate injury or product and property damage.The power supply (volts, phase, and hertz) must correspond to thatspecified on unit rating plate.The electrical supply provided by the utility must be sufficient tohandle load imposed by this unit.This installation must conform with local building codes and withNEC (National Electrical Code) and NFPA 70, NFPA 54/ANSIZ223.1 latest revision, and NFGC (National Fuel Gas Code). Referto provincial and local plumbing or waste water codes and otherapplicable local codes.Approved for outdoor installation on wood flooring or on class A,B or C roof covering materials.Fig. 1—Unit 48GP C99088Visit www.carrier.comManufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.Book 1 4Tab 6a 8a PC 101 Catalog No. 534-755 Printed in U.S.A. Form 48GP-1SI Pg 1 3-00 Replaces: New