Carrier NP034-074 specifications Ð Physical Data 054-074 Units

Table 1B Ð Physical Data; 054-074 Units

BASE UNIT*	054					064				074
NOMINAL CAPACITY (tons)		50					60				75
OPERATING WEIGHT (lb)
Base Unit
48 Series, Low Heat	8700					9000				9420
48 Series, High Heat	8820					9120				9550
50 Series, Horizontal Discharge	8250					8550				8970
50 Series, Vertical Discharge	7700					8000				8430
With Economizer
48 Series, Low Heat	9230					9530				9950
48 Series, High Heat	9350					9650				10,080
50 Series, Horizontal Discharge	8780					9080				9500
50 Series, Vertical Discharge	8230					8530				8960
COMPRESSORS						Semi-Hermetic
Quantity...Type	2...06E					2...06E				2...06E
Capacity Steps (%)	20, 40, 60, 80, 100					17, 33, 50, 66, 83, 100			14, 28, 43, 71, 85, 100
Number of Refrigerant Circuits		2					2				2
REFRIGERANT
Operating Charge (lb), Sys 1/Sys 2
Without Hot Gas Bypass	59.0/44.5					61.0/61.0				70.5/64.5
With Hot Gas Bypass	62.0/44.5					64.0/61.0				73.5/64.5
CONDENSER COILS						3¤8-in. Tube Diameter
Quantity		4					4				4
Rows...Fins/in.
Aluminum	2...17.0, 3...17.0					3...17.0				3...17.0
Copper (Optional)	2...15.7, 3...15.7					3...15.7				3...15.7
Total Face Area (sq ft)	72.4					72.4				108.4
EVAPORATOR COILS						1¤2-in. Tube Diameter
Quantity		2					2				2
Rows...Fins/in.	3...17.0					4...17.0				4...17.0
Total Face Area (sq ft)	61.5					61.5				61.5
Refrigerant Feed Device...	TXV...2					TXV...2				TXV..2
No. per Circuit
HEATING SECTION (48 Series Units Only)	Low Heat		High Heat			Low Heat		High Heat	Low Heat			High Heat
Number of Heat Exchangers	12		18			12		18		12		18
Input (MBtuh)	540		810			540		810		540		810
Output (MBtuh)	432		648			432		648		432		648
Temperature Rise Range (F)	5-35		15-45			5-35		15-45		5-35		15-45
Efficiency (%)	80		80			80		80		80		80
Burner Ori®ce Diameter
Quantity (in. ...drill no.)	12 (.1285...30)		18 (.1285...30)			12 (.1285...30)		18 (.1285...30)	12 (.1285...30)			18 (.1285...30)
Pilot Ori®ce Diameter
Quantity (in. ...drill no.)	2 (.076...48)		3 (.076...48)			2 (.076...48)		3 (.076...48)	2 (.076...48)			3 (.076...48)
Firing Stages	2		2			2		2		2		2
Number of Gas Valves	2		3			2		3		2		3
CONDENSER FANS						Propeller Type
Quantity...Diameter (in.)		4...30				4...30				5...30
Nominal Cfm		40,000				40,000				50,000
Motor Hp...Rpm	1.0...1140					1.0...1140				1.0...1140
EVAPORATOR FAN						Centrifugal 30 x 27 in.
Nominal Cfm		17,500				21,000				24,500
Maximum Allowable Cfm		25,000				30,000				30,000
Maximum Allowable Rpm		750				750				750
Shaft Diameter at Pulley (in.)		111¤16				111¤16				111¤16
EVAPORATOR-FAN MOTOR AND DRIVE						(Any motor available on any unit)
Motor Hp	15.0			20.0				25.0				30.0
Motor Frame Size	254T			256T				284T				286T
Efficiency at Full Load (%)
Standard Efficiency	84.5			87.5				87.1				88.3
High Efficiency²	90.0			91.0				91.7				92.4
Fan Pulley Pitch Diameter (in.)	13.7			13.7				13.7				15.5
Motor Pulley Pitch Diameter (in.)	4.5				5.1			5.5				5.9
Resulting Fan Rpm	555			625				660				700
Belts Quantity...Model No.
48 Series and 50 Series, Horizontal Discharge	2...5VX1120			2...5VX1150				2...5VX1150				2...5VX1180
50 Series, Vertical Discharge	2...5VX1230			2...5VX1230				2...5VX1230				2...5VX1230
Center Distance Range (in.)
48 Series and 50 Series, Horizontal Discharge	48.25...44.00			48.25...44.00				48.50...44.25				48.50...44.25
50 Series, Vertical Discharge	44.25...39.75			44.25...39.75				44.00...40.00				44.00...40.00
OPTIONAL POWER EXHAUST			Centrifugal, 18 x 15 in. (Any motor available on any unit)
Quantity...Motor Hp	2...5.0					2...7.5				2...10.0
Motor Frame Size	184T					213T				215T
Efficiency at Full Load (%)	84.0					82.9				85.6
Fan Pulley Pitch Diameter (in.)	10.6					10.6				10.6
Motor Pulley Pitch Diameter (in.)		4.5					5.0				5.6
Shaft Diameter at Pulley (in.)	17¤16					17¤16				17¤16
Resulting Fan Rpm	740					820				920
Maximum Allowable Rpm	925					925				925
FILTERS
Standard Efficiency
Throwaway (Standard)	15...20 x 25 x 2					15...20 x 25 x 2				15...20 x 25 x 2
Quantity...Size (in.)	5...16 x 20 x 2					5...16 x 20 x 2				5...16 x 20 x 2
Medium Ef®ciency (30%) Pleated (Optional)	15...20 x 25 x 2					15...20 x 25 x 2				15...20 x 25 x 2
Quantity...Size (in.)	5...16 x 20 x 2					5...16 x 20 x 2				5...16 x 20 x 2
High Efficiency (90%) Bag Filters
with Pre®lters (Optional)	6...20 x 24 x 22					6...20 x 24 x 22				6...20 x 24 x 22
Quantity...Size (in.)	6...24 x 24 x 22					6...24 x 24 x 22				6...24 x 24 x 22

TXV Ð Thermostatic Expansion Valve

*Data is for all 48 and 50 Series units of the size listed unless otherwise speci®ed. ²Not available on 575-v units.

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