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Carrier NP034-074 specifications Ð Gas Heat Section; 48DK034,044 Units

Models: NP034-074

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Fig. 68 Ð Gas Heat Section; 48DK034,044 Units

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Fig. 68 Ð Gas Heat Section; 48DK034,044 Units

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Carrier NP034-074 specifications Ð Gas Heat Section; 48DK034,044 Units

Contents

CONTENTS Installing Flue/Inlet Hoods 48 Series UnitsGas Manifold Pressure 48 Series Evaporator-FanBelts, Pulleys, and Sheaves . .CONTENTS cont SAFETY CONSIDERATIONSINSTALLATION GENERALFig. 1 Ð Rigging Label Table 1A Ð Physical Data; 034, 044 Units Table 1B Ð Physical Data; 054-074Units To attach ductwork to roof curb, insert duct approxi- mately 10 to 11 in. up into roof curb. Connect ductwork to 14-gageroof curb material with sheet metal screws driven from inside of the duct Fig. 3A Ð Roof Curb; 034, 044 Units Fig. 3B Ð Roof Curb; 054-074Units UNIT Install Outdoor Hoods Outdoor-AirInlet AdjustmentsUNIT 5400 8700 UNIT Fig. 5 Ð Drain Location Selection Fig. 8 Ð Condensate Drain Piping DetailsFig. 6 Ð Condensate Drain Location Fig. 9 Ð Outdoor-AirHoodFig. 10 Ð Outdoor-AirDamper Adjustments Fig. 13 Ð Psychrometric Chart forFig. 12 Ð Enthalpy Sensor Location Inside of Hood ShownField Wire Routing Fig. 14 Ð Wiring Connections for Solid-StatePosition Setting Adjustments Field Electrical ConnectionsFig. 18 Ð Field Power Wiring Connections Fig. 17 Ð Disconnect Location, 054-074Units50 Series Horizontal Discharge Shown Table 3 Ð Electrical Data, 034 Units 208/230-3-60 V-Ph-HzTable 3 Ð Electrical Data, 034 Units cont 460-3-60 V-Ph-HzTable 3 Ð Electrical Data, 034 Units cont 575-3-60 V-Ph-HzTable 4 Ð Electrical Data, 044 Units Table 4 Ð Electrical Data, 044 Units cont Table 4 Ð Electrical Data, 044 Units cont BASE UNIT WITHTable 5 Ð Electrical Data, 054 Units Table 5 Ð Electrical Data, 054 Units cont Table 5 Ð Electrical Data, 054 Units cont BASE UNIT WITHTable 6 Ð Electrical Data, 064 Units Table 6 Ð Electrical Data, 064 Units cont Table 6 Ð Electrical Data, 064 Units cont BASE UNIT WITHTable 7 Ð Electrical Data, 074 Units Table 7 Ð Electrical Data, 074 Units cont Table 7 Ð Electrical Data, 074 Units cont BASE UNIT WITHFig. 19 Ð Field Control Thermostat Wiring NOTES AND LEGEND FOR FIG.OPTIONAL MODULATING POWER EXHAUST OPTIONAL MODULATING POWER EXHAUST034 AND 044 UNITS BASE UNIT BASE UNIT BASE UNITInstalling Flue/Inlet Hoods 48 Series Units Only Fig. 21 Ð Gas Piping DetailsFig. 22 Ð Flue/Inlet Hood, 034,044 Units Fig. 23 Ð Inlet HoodFig. 24 Ð Flue Hood Fig. 25 Ð Flue De¯ector Baffles, 034,044 UnitsFig. 27 Ð Flue/Inlet Hood, 054-074Units Fig. 28 Ð Flue/Inlet Hood Close-UpPRE-START-UP Fig. 30 Ð Shipping Brackets; 034,044 Units and50 Series Vertical Discharge 054-074Units Table 8 Ð Oil ChargeGas Manifold Pressure 48 Series Units Only Evaporator-FanBelts, Pulleys, and Sheaves ÐTable 10 Ð Air Quantity Limits cfm Fig. 32 Ð Condenser-FanAdjustment Initial CheckSTART-UP General SERVICE Fig. 34 Ð Typical Filter Drier and Liquid Service Valve AccessFig. 35 Ð Modulating Power Exhaust Damper Motor Access, 034 and 044 UnitsFig. 40 Ð Flue Box Assembly, 48 Series Units Only Shown with Burner AssemblyFig. 37 Ð Gas Section Detail, 48 Series 034 and 044 UnitsLubrication Fig. 42 Ð Typical Electric Heat Control BoxFig. 43 Ð Inlet Guide Vane Motor Adjustments Fig. 44 Ð Motor Plate AdjustmentFig. 46 Ð Charging Chart, 034 Units; System Fig. 47 Ð Charging Chart, 034 Units; SystemFig. 48 Ð Charging Chart, 034 Units; System Fig. 45 Ð Pulley AlignmentFig. 49 Ð Charging Chart, 034 Units; System Fig. 50 Ð Charging Chart, 044 Units; SystemFig. 51 Ð Charging Chart, 044 Units; System Fig. 52 Ð Charging Chart, 044 Units; SystemFig. 55 Ð Charging Chart, 054 Units; System Fig. 56 Ð Charging Chart, 064 Units; SystemFig. 57 Ð Charging Chart, 064 Units; System Fig. 58 Ð Charging Chart, 074 Units; SystemFig. 60 Ð Auxiliary Switch Stroke Adjustment Main Burner Removal 48 Series Units OnlyProtective Devices TROUBLESHOOTING Fig. 62 Ð Typical Compressor OvertemperatureHigh- and Low-PressureSwitch Locations Table 11 Ð Pressure Switch Settings psigTable 14 Ð Economizer Control Board Checkout Test Table 15 Ð Economizer Control Board Checkout TestTable 16 Ð Economizer Control Board Checkout Test Fig. 64 Ð Control Board Component Arrangement Symptom: Compressor no. 2 will not operate 3.Reconnect the wires removed in Step1.Turn unit power off. Disconnect plugs P1 and P3 6.Turn unit power off. Reconnect plugs P1 and P4Fig. 65 Ð Compressor Lockout Connections SC Ð Safety CircuitLEGEND CLO Ð Compressor Lockout PÐ Plug LEGEND FOR FIG. Fig. 66 Ð Gas Heat Sections; 48DJ,NP034,044 Units Fig. 67 Ð Gas Heat Sections; 48DJ,NP054-074Units Fig. 68 Ð Gas Heat Section; 48DK034,044 Units Fig. 69 Ð Gas Heat Section; 48DK054-074Units Page Page Page Page Page Page Page Page PACKAGED SERVICE TRAINING Page START-UP START-UPCHECKLISTTEMPERATURES PRE-START-UP