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Carrier NP034-074 Start-Upchecklist, Pre-Start-Up, Electrical, Temperatures, Pressures

Models: NP034-074

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		START-UP CHECKLIST
MODEL NO.:			SERIAL NO.:
DATE:			TECHNICIAN:

PRE-START-UP:

VERIFY THAT ALL PACKING MATERIALS HAVE BEEN REMOVED FROM UNIT

LOOSEN ALL SHIPPING HOLDDOWN BOLTS AND REMOVE SHIPPING BRACKETS PER INSTRUCTIONS VERIFY INSTALLATION OF ECONOMIZER HOOD

VERIFY INSTALLATION OF EXHAUST HOOD

VERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTRUCTIONS

VERIFY THAT ALL ELECTRICAL CONNECTIONS AND TERMINALS ARE TIGHT

CHECK GAS PIPING FOR LEAKS (48 SERIES UNITS ONLY)

CHECK THAT INDOOR-AIR FILTER IS CLEAN AND IN PLACE

VERIFY THAT UNIT IS LEVEL

CHECK FAN WHEEL AND PROPELLER FOR LOCATION IN HOUSING/ORIFICE, AND VERIFY SET SCREW IS TIGHT

VERIFY THAT FAN SHEAVES ARE ALIGNED AND BELTS ARE PROPERLY TENSIONED

START-UP

ELECTRICAL

SUPPLY VOLTAGE L1-L2

L2-L3

L3-L1

COMPRESSOR AMPS Ð COMPRESSOR NO. 1

L1

L2

L3

Ð COMPRESSOR NO. 2

L1

L2

L3

SUPPLY FAN AMPS

EXHAUST FAN AMPS

ELECTRIC HEAT AMPS L1

L2

L3

TEMPERATURES

OUTDOOR-AIR TEMPERATURE

F

DB (Dry-Bulb)

RETURN-AIR TEMPERATURE

F

DB

F WB (Wet-Bulb)

COOLING SUPPLY AIR

F

GAS HEAT SUPPLY AIR

(48 SERIES UNITS ONLY)

F

ELECTRIC HEAT SUPPLY AIR

(IF UNIT IS SO EQUIPPED)

F

PRESSURES

GAS INLET PRESSURE (48 SERIES UNITS ONLY)

IN. WG

GAS MANIFOLD PRESSURE

(48 SERIES UNIT ONLY)

VALVE NO. 1

IN. WG

VALVE NO. 2

IN. WG

REFRIGERANT SUCTION

CIRCUIT NO. 1

PSIG

CIRCUIT NO. 2

PSIG

REFRIGERANT DISCHARGE

CIRCUIT NO. 1

PSIG

CIRCUIT NO. 2

PSIG

VERIFY REFRIGERANT CHARGE USING CHARGING CHARTS ON PAGES 47-49

GENERAL

ECONOMIZER MINIMUM VENT AND CHANGEOVER SETTINGS TO JOB REQUIREMENTS

Copyright 1996 Carrier Corporation

Manufacturer reserves the right to discontinue, or change at any time, speci®cations or designs without notice and without incurring obligations.

Book	1	1		PC 111	Catalog No. 564-818	Printed in U.S.A.	Form 48/50D,N-9SI	CL-1	3-96	Replaces: 48DJ,DK-3SI;
Tab	1a	1b								48/50NB,NP-1SI; 50DJ,DK-9SI

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Image 72

Carrier NP034-074 specifications Start-Upchecklist, Pre-Start-Up, Electrical, Temperatures, Pressures, General

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