Manuals / Carrier / Household Appliance / Air Conditioner

Carrier NP034-074 specifications Ð Pulley Alignment, Ð Charging Chart, 034 Units; System

Models: NP034-074

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Fig. 45 Ð Pulley Alignment

Fig. 45 Ð Pulley Alignment

25% OUTDOOR-AIR DAMPER Ð See Manual Outdoor- Air Damper section on page 10 for adjustment details.

REFRIGERANT CHARGE Ð All units are shipped with a complete operating charge of R-22. See unit nameplate and Tables 1A and 1B for amount of charge. When adding a com- plete charge, evacuate system using standard evacuating pro- cedures and weigh in the speci®ed amount of charge. All units have charging charts for each refrigerant circuit. See Fig. 46-59.

PILOT LIGHT OFF (48NP Units Only) Ð If pilots do not light as described in Heating section on page 41, be sure that pilot ori®ce is unobstructed, then check for spark ignitor mal- functions as follows:

1.Turn off the control circuit breaker (CCB) to shut off con- trol supply power to ignitor control pack (ICP).

2.Check that spark gap is 3¤8 in. 6 1¤32 inch.

3.Check that ICP is securely grounded.

4.Check that the high-voltage lead is securely connected between the ICP and the electrode body.

5.Turn on CCB to restore power to ICP. Check that 24 v is supplied to terminal TH of the ICP.

6.Check unit label diagram for correct terminal usage if any wires are removed.

Fig. 46 Ð Charging Chart, 034 Units; System 1,

One Condenser Fan Running

Fig. 47 Ð Charging Chart, 034 Units; System 1,

All Condenser Fans Running

Fig. 48 Ð Charging Chart, 034 Units; System 2,

One Condenser Fan Running

47

Image 47

Carrier NP034-074 specifications Ð Pulley Alignment, Ð Charging Chart, 034 Units; System, One Condenser Fan Running

Contents

Evaporator-FanBelts, Pulleys, and Sheaves . . CONTENTSInstalling Flue/Inlet Hoods 48 Series Units Gas Manifold Pressure 48 SeriesGENERAL CONTENTS contSAFETY CONSIDERATIONS INSTALLATIONFig. 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 Outdoor-AirInlet Adjustments Install Outdoor HoodsUNIT 5400 8700 UNIT Fig. 9 Ð Outdoor-AirHood Fig. 5 Ð Drain Location SelectionFig. 8 Ð Condensate Drain Piping Details Fig. 6 Ð Condensate Drain LocationInside of Hood Shown Fig. 10 Ð Outdoor-AirDamper AdjustmentsFig. 13 Ð Psychrometric Chart for Fig. 12 Ð Enthalpy Sensor LocationField Electrical Connections Field Wire RoutingFig. 14 Ð Wiring Connections for Solid-State Position Setting Adjustments50 Series Horizontal Discharge Shown Fig. 18 Ð Field Power Wiring ConnectionsFig. 17 Ð Disconnect Location, 054-074Units 208/230-3-60 V-Ph-Hz Table 3 Ð Electrical Data, 034 Units460-3-60 V-Ph-Hz Table 3 Ð Electrical Data, 034 Units cont575-3-60 V-Ph-Hz Table 3 Ð Electrical Data, 034 Units contTable 4 Ð Electrical Data, 044 Units Table 4 Ð Electrical Data, 044 Units cont BASE UNIT WITH Table 4 Ð Electrical Data, 044 Units contTable 5 Ð Electrical Data, 054 Units Table 5 Ð Electrical Data, 054 Units cont BASE UNIT WITH Table 5 Ð Electrical Data, 054 Units contTable 6 Ð Electrical Data, 064 Units Table 6 Ð Electrical Data, 064 Units cont BASE UNIT WITH Table 6 Ð Electrical Data, 064 Units contTable 7 Ð Electrical Data, 074 Units Table 7 Ð Electrical Data, 074 Units cont BASE UNIT WITH Table 7 Ð Electrical Data, 074 Units contNOTES AND LEGEND FOR FIG. Fig. 19 Ð Field Control Thermostat WiringBASE UNIT BASE UNIT BASE UNIT OPTIONAL MODULATING POWER EXHAUSTOPTIONAL MODULATING POWER EXHAUST 034 AND 044 UNITSFig. 23 Ð Inlet Hood Installing Flue/Inlet Hoods 48 Series Units OnlyFig. 21 Ð Gas Piping Details Fig. 22 Ð Flue/Inlet Hood, 034,044 UnitsFig. 28 Ð Flue/Inlet Hood Close-Up Fig. 24 Ð Flue HoodFig. 25 Ð Flue De¯ector Baffles, 034,044 Units Fig. 27 Ð Flue/Inlet Hood, 054-074UnitsTable 8 Ð Oil Charge PRE-START-UPFig. 30 Ð Shipping Brackets; 034,044 Units and 50 Series Vertical Discharge 054-074UnitsEvaporator-FanBelts, Pulleys, and Sheaves Ð Gas Manifold Pressure 48 Series Units OnlyTable 10 Ð Air Quantity Limits cfm START-UP General Fig. 32 Ð Condenser-FanAdjustmentInitial Check SERVICE Motor Access, 034 and 044 Units Fig. 34 Ð Typical Filter Drier and Liquid ServiceValve Access Fig. 35 Ð Modulating Power Exhaust Damper044 Units Fig. 40 Ð Flue Box Assembly, 48 Series Units OnlyShown with Burner Assembly Fig. 37 Ð Gas Section Detail, 48 Series 034 andFig. 43 Ð Inlet Guide Vane Motor LubricationFig. 42 Ð Typical Electric Heat Control Box Fig. 44 Ð Motor Plate Adjustment AdjustmentsFig. 45 Ð Pulley Alignment Fig. 46 Ð Charging Chart, 034 Units; SystemFig. 47 Ð Charging Chart, 034 Units; System Fig. 48 Ð Charging Chart, 034 Units; SystemFig. 52 Ð Charging Chart, 044 Units; System Fig. 49 Ð Charging Chart, 034 Units; SystemFig. 50 Ð Charging Chart, 044 Units; System Fig. 51 Ð Charging Chart, 044 Units; SystemFig. 58 Ð Charging Chart, 074 Units; System Fig. 55 Ð Charging Chart, 054 Units; SystemFig. 56 Ð Charging Chart, 064 Units; System Fig. 57 Ð Charging Chart, 064 Units; SystemMain Burner Removal 48 Series Units Only Fig. 60 Ð Auxiliary Switch Stroke AdjustmentProtective Devices Table 11 Ð Pressure Switch Settings psig TROUBLESHOOTINGFig. 62 Ð Typical Compressor Overtemperature High- and Low-PressureSwitch LocationsTable 16 Ð Economizer Control Board Checkout Test Table 14 Ð Economizer Control Board Checkout TestTable 15 Ð Economizer Control Board Checkout Test Fig. 64 Ð Control Board Component Arrangement 6.Turn unit power off. Reconnect plugs P1 and P4 Symptom: Compressor no. 2 will not operate3.Reconnect the wires removed in Step 1.Turn unit power off. Disconnect plugs P1 and P3LEGEND CLO Ð Compressor Lockout PÐ Plug Fig. 65 Ð Compressor Lockout ConnectionsSC Ð Safety Circuit 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 PRE-START-UP START-UPSTART-UPCHECKLIST TEMPERATURES