Manuals / Carrier / Household Appliance / Air Conditioner

Carrier NP034-074 specifications A Ð Roof Curb; 034, 044 Units

Models: NP034-074

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Fig. 3A Ð Roof Curb; 034, 044 Units

	UNIT				UNIT			X			Y
	MODEL				SIZE		mm		ft-in.	mm	ft-in.
	48DJ,DK,NP			034		6606		21-81¤16		4056	13- 311¤16
	50DW,DY,NB			034		6606		21-81¤16		4056	13- 311¤16
	50DW,DY,NB			034
	50DJ,DK,NP			034		6131		20-13¤8		3311	10-103¤8
	48DJ,DK,NP			044		7825		25-81¤16		4893	16- 05¤8
	50DW,DY,NB			044		7825		25-81¤16		4893	16- 05¤8
	50DW,DY,NB			044
	50DJ,DK,NP			044		7344		24-11¤8		4141	13- 71¤16
	UNIT LEVELING TOLERANCES
			DIMENSIONS*
			(degrees and inches)

	A					B
	Deg		in.		Deg		in.
	1.0		2.0		.50		.75

*From edge of unit to horizontal.

NOTES:

1.Roof curb is shipped unassembled.

2.Roof curb: 14 gage (VA03-56) steel.

3.Dimensions in [ ] are millimeters.

NOTE: To prevent the hazard of stagnant water build-up in the drain pan of the indoor-air section, unit can only be pitched as shown.

Fig. 3A Ð Roof Curb; 034, 044 Units

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Carrier NP034-074 specifications A Ð Roof Curb; 034, 044 Units

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 AdjustmentsFig. 17 Ð Disconnect Location, 054-074Units Fig. 18 Ð Field Power Wiring Connections50 Series Horizontal Discharge Shown 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 Initial Check Fig. 32 Ð Condenser-FanAdjustmentSTART-UP General 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. 42 Ð Typical Electric Heat Control Box LubricationFig. 43 Ð Inlet Guide Vane Motor 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 15 Ð Economizer Control Board Checkout Test Table 14 Ð Economizer Control Board Checkout TestTable 16 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 P3SC Ð Safety Circuit Fig. 65 Ð Compressor Lockout ConnectionsLEGEND 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 PRE-START-UP START-UPSTART-UPCHECKLIST TEMPERATURES