Carrier NP034-074 specifications

Contents

Main Installation, Start-Up and Service Instructions CONTENTS 48DJ,DK,NP034-074 50DJ,DK,DW,DY,NB,NP034-074 Single Package Heating and Cooling Units CONTENTS (cont) GENERAL SAFETY CONSIDERATIONS INSTALLATION Rigging and Unit Placement Roof Curb Positioning Table 1A Physical Data; 034, 044 Units Table 1B Physical Data; 054-074 Units Field-Fabricated Ductwork Fig. 3A Roof Curb; 034, 044 Units Fig. 3B Roof Curb; 054-074 Units Fig. 3C Condenser Section Roof Curb (054-074 Units Only) Condensate Drains Install Outdoor Hoods Outdoor-Air Inlet Adjustments Fig. 4A Base Unit Dimensional Drawing; 48DJ,DK,NP/50DW,DY,NB034,044 Units Fig. 4B Base Unit Dimensional Drawing; 50DJ,DK,NP034,044 Units Fig. 4C Base Unit Dimensional Drawing; 48DJ,DK,NP/50DW,DY,NB054-074 Units Fig. 4D Base Unit Dimensional Drawing; 50DJ,DK,NP054-074 Units Page Page Field Wire Routing Field Electrical Connections Page Table 3 Electrical Data, 034 Units Page Table 3 Electrical Data, 034 Units (cont) Table 4 Electrical Data, 044 Units Page Table 4 Electrical Data, 044 Units (cont) Table 5 Electrical Data, 054 Units Page Table 5 Electrical Data, 054 Units (cont) Table 6 Electrical Data, 064 Units Page Table 6 Electrical Data, 064 Units (cont) Table 7 Electrical Data, 074 Units Page Table 7 Electrical Data, 074 Units (cont) NOTES AND LEGEND FOR FIG. 20 Page Gas Piping (48 Series Units Only) Installing Flue/Inlet Hoods (48 Series Units Only) Fig. 24 Flue Hood Fig. 25 Flue Deector Baffles, 034,044 Units Fig. 26 Flue Deector Hood, 034,044 Units (Assembled) Fig. 27 Flue/Inlet Hood, 054-074 Units Fig. 28 Flue/Inlet Hood Close-Up PRE-START-UP Unit Preparation Compressor Mounting Evaporator-Fan Shipping Brackets Internal Wiring Refrigerant Service V alves Gas Manifold Pressure (48 Series Units Only) Unit V oltage Leak T est and Dehydration Evaporator-Fan Belts, Pulleys, and Sheaves Condenser Fans and Motors Return-Air Filters Economizer Inlet Screens Economizer Dampers 25% Outdoor-Air Damper Initial Check START-UP General Operating Sequences Head Pressure Control SERVICE Service Access Page Page Cleaning Lubrication Adjustments Page Page Page Main Burner Removal (48 Series Units Only) Switch Adjustment Refrigerant Feed Components Thermostatic Expansion V alve (TXV) Moisture/Liquid Indicator Filter Drier Liquid Line Service V alve Compressor Discharge Service V alve Compressor Suction Service V alve Control Circuit, 1 15 V Control Circuit, 24 V Electric Heat (50 Series Units Only) Gas Heat (48 Series Units Only) TROUBLESHOOTING Economizer Unit Control Board Checkout Page Page Page LEGEND FOR FIG. 66-73 Page Page Page Page Page Page Page Page Page Page Page Page PACKAGED SERVICE TRAINING Page START-UP CHECKLIST PRE-START-UP: START-UP